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How do I solve the whitelabel error page while using vaadin, spring boot, java

This is the error
I am using vaadin, spring boot. I have tried everything. I have made the project with spring initiazr, the vaadin start but nothing works. It always show this error.
package me.Sadness7311.IBegYou;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class IBegYouApplication {
public static void main(String[] args) {
SpringApplication.run(IBegYouApplication.class, args);
}
}
This is the main class.
The pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.8</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>me.Sadness7311</groupId>
<artifactId>IBegYou</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>IBegYou</name>
<description>Pleaseeeeeeeeeeeeeeeee</description>
<properties>
<java.version>17</java.version>
<vaadin.version>23.3.4</vaadin.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>${vaadin.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>production</id>
<build>
<plugins>
<plugin>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-maven-plugin</artifactId>
<version>${vaadin.version}</version>
<executions>
<execution>
<id>frontend</id>
<phase>compile</phase>
<goals>
<goal>prepare-frontend</goal>
<goal>build-frontend</goal>
</goals>
<configuration>
<productionMode>true</productionMode>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>
I have been trying for a long time. please solve it
I tried everything, nothing happened except the whitelabel page error.
This is the error in console
#Chaosfire
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1784) ~[tomcat-embed-core-9.0.71.jar:9.0.71]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.71.jar:9.0.71]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.71.jar:9.0.71]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.71.jar:9.0.71]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.71.jar:9.0.71]
at java.base/java.lang.Thread.run(Thread.java:1589) ~[na:na]
Caused by: com.vaadin.flow.server.ExecutionFailedException: Npm install has exited with non zero status. Some dependencies are not installed. Check npm command output
at com.vaadin.flow.server.frontend.TaskRunNpmInstall.runNpmInstall(TaskRunNpmInstall.java:407) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.flow.server.frontend.TaskRunNpmInstall.execute(TaskRunNpmInstall.java:183) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.flow.server.frontend.NodeTasks.execute(NodeTasks.java:342) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.base.devserver.startup.DevModeInitializer.runNodeTasks(DevModeInitializer.java:435) ~[vaadin-dev-server-23.3.2.jar:na]
at com.vaadin.base.devserver.startup.DevModeInitializer.lambda$initDevModeHandler$0(DevModeInitializer.java:348) ~[vaadin-dev-server-23.3.2.jar:na]
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[na:na]
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1311) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1840) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1806) ~[na:na]
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177) ~[na:na]
2023-01-25 14:59:28.455 ERROR 15404 --- [io-4545-exec-10] o.a.c.c.C.[.[.[/].[springServlet] : Servlet.service() for servlet [springServlet] threw exception
com.vaadin.flow.server.ExecutionFailedException: Npm install has exited with non zero status. Some dependencies are not installed. Check npm command output
at com.vaadin.flow.server.frontend.TaskRunNpmInstall.runNpmInstall(TaskRunNpmInstall.java:407) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.flow.server.frontend.TaskRunNpmInstall.execute(TaskRunNpmInstall.java:183) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.flow.server.frontend.NodeTasks.execute(NodeTasks.java:342) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.base.devserver.startup.DevModeInitializer.runNodeTasks(DevModeInitializer.java:435) ~[vaadin-dev-server-23.3.2.jar:na]
at com.vaadin.base.devserver.startup.DevModeInitializer.lambda$initDevModeHandler$0(DevModeInitializer.java:348) ~[vaadin-dev-server-23.3.2.jar:na]
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[na:na]
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1311) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1840) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1806) ~[na:na]
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177) ~[na:na]
2023-01-25 14:59:28.456 ERROR 15404 --- [io-4545-exec-10] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [com.vaadin.flow.server.ServiceException: java.lang.IllegalStateException: com.vaadin.flow.server.ExecutionFailedException: Npm install has exited with non zero status. Some dependencies are not installed. Check npm command output] with root cause
com.vaadin.flow.server.ExecutionFailedException: Npm install has exited with non zero status. Some dependencies are not installed. Check npm command output
at com.vaadin.flow.server.frontend.TaskRunNpmInstall.runNpmInstall(TaskRunNpmInstall.java:407) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.flow.server.frontend.TaskRunNpmInstall.execute(TaskRunNpmInstall.java:183) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.flow.server.frontend.NodeTasks.execute(NodeTasks.java:342) ~[flow-server-23.3.2.jar:23.3.2]
at com.vaadin.base.devserver.startup.DevModeInitializer.runNodeTasks(DevModeInitializer.java:435) ~[vaadin-dev-server-23.3.2.jar:na]
at com.vaadin.base.devserver.startup.DevModeInitializer.lambda$initDevModeHandler$0(DevModeInitializer.java:348) ~[vaadin-dev-server-23.3.2.jar:na]
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[na:na]
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1311) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1840) ~[na:na]
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1806) ~[na:na]
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177) ~[na:na]
2023-01-25 16:19:48.827 WARN 15404 --- [l-1 housekeeper] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Thread starvation or clock leap detected (housekeeper delta=1h11m40s411ms857µs200ns).`
This is my other class
package me.Sadness7311.IBegYou;
import com.vaadin.flow.component.html.H1;
import com.vaadin.flow.component.orderedlayout.VerticalLayout;
import com.vaadin.flow.router.Route;
import org.springframework.web.bind.annotation.RestController;
#Route("")
public class MainView extends VerticalLayout {
public void View() {
add(new H1("Hello World!"));
}
}
This is the thing I found

Could not find class [org.springframework.boot.autoconfigure.condition.OnBeanCondition]

Im using feign client to make rest calls between microservices, When i execute it using IntelliJ IDEA its working fine. But if i execute it with jar it gives me following error.
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [org.springframework.cloud.netflix.eureka.loadbalancer.EurekaLoadBalancerClientConfiguration]; nested exception is java.lang.IllegalArgumentException: Could not find class [org.springframework.boot.autoconfigure.condition.OnBeanCondition]
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:189)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:247)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:112)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564)
at org.springframework.cloud.context.named.NamedContextFactory.createContext(NamedContextFactory.java:155)
at org.springframework.cloud.context.named.NamedContextFactory.getContext(NamedContextFactory.java:108)
at org.springframework.cloud.context.named.NamedContextFactory.getInstances(NamedContextFactory.java:203)
at org.springframework.cloud.openfeign.loadbalancer.RetryableFeignBlockingLoadBalancerClient.lambda$execute$2(RetryableFeignBlockingLoadBalancerClient.java:118)
at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:329)
at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:225)
at org.springframework.cloud.openfeign.loadbalancer.RetryableFeignBlockingLoadBalancerClient.execute(RetryableFeignBlockingLoadBalancerClient.java:113)
at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:119)
at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:89)
at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100)
at com.sun.proxy.$Proxy76.fundTransfer(Unknown Source)
at com.core.banking.user.service.internetbanking.acl.service.FundTransferService.fundTransfer(FundTransferService.java:19)
at com.core.banking.user.service.internetbanking.acl.event.EventHandler.lambda$onEvent$0(EventHandler.java:38)
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1736)
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1728)
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)
Caused by: java.lang.IllegalArgumentException: Could not find class [org.springframework.boot.autoconfigure.condition.OnBeanCondition]
at org.springframework.util.ClassUtils.resolveClassName(ClassUtils.java:334)
at org.springframework.context.annotation.ConditionEvaluator.getCondition(ConditionEvaluator.java:124)
at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:96)
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:226)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:207)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:175)
... 26 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.autoconfigure.condition.OnBeanCondition
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:398)
at org.springframework.util.ClassUtils.forName(ClassUtils.java:284)
at org.springframework.util.ClassUtils.resolveClassName(ClassUtils.java:324)
... 31 common frames omitted
POM File
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.core.banking.user.service</groupId>
<artifactId>internet-banking-acl-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>internet-banking-acl-service</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>2021.0.2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.24</version>
</dependency>
<dependency>
<groupId>org.springframework.kafka</groupId>
<artifactId>spring-kafka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

We had the same issue. After a research we found out that the issue is similar to described in the feign client bug.
The temporary fix provided by DenisKorolev resolves the issue by setting correct ClassLoader during context initialisation.
#Bean
#ConditionalOnMissingBean
public LoadBalancerClientFactory loadBalancerClientFactory(LoadBalancerClientsProperties properties) {
return new LoadBalancerClientFactory(properties) {
#Override
protected AnnotationConfigApplicationContext createContext(String name) {
// FIXME: temporary switch classloader to use the correct one when creating the context
ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
AnnotationConfigApplicationContext context = super.createContext(name);
Thread.currentThread().setContextClassLoader(originalClassLoader);
return context;
}
};
}

ClassNotFoundException while running jar on Amazon Kinesis Streaming Analytics app

I have created a Kinesis Analytics Streaming Application in SpringBoot which will consume messages from the AmazonKinesis input stream and will do some operations on top of it using the Apache Flink DataStream library.
When, I am uploading the application jar to S3 and trying to run this application on Streaming App it is throwing ClassNotFoundException for one of the files which is the ApplicationConfiguration file. Also, when I am running this application locally, it is running fine without any errors and I am able to consume the messages.
Below are some of the code files.
ApplicationConfiguration.java
import java.util.Properties;
import org.apache.flink.api.common.serialization.SimpleStringSchema;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer;
import org.apache.flink.streaming.connectors.kinesis.FlinkKinesisProducer;
import org.apache.flink.streaming.connectors.kinesis.config.ConsumerConfigConstants;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
#Configuration
public class ApplicationConfiguration {
#Value("${oe.metric.input.stream}")
private String inputStreamName;
#Value("${oe.metric.output.stream}")
private String outputStreamName;
#Value("${aws.region}")
private String region;
#Value("${stream.initial.position}")
private String position;
#Bean
public FlinkKinesisProducer<String> createSinkFromStaticConfig() {
Properties outputProperties = new Properties();
outputProperties.setProperty(ConsumerConfigConstants.AWS_REGION, region);
outputProperties.setProperty("AggregationEnabled", "false");
FlinkKinesisProducer<String> sink = new FlinkKinesisProducer<>(new SimpleStringSchema(),
outputProperties);
sink.setDefaultStream(outputStreamName);
sink.setDefaultPartition("0");
return sink;
}
#Bean
public DataStream<String> createSourceFromConfig() {
Properties inputProperties = new Properties();
inputProperties.setProperty(ConsumerConfigConstants.AWS_REGION, region);
inputProperties.setProperty(ConsumerConfigConstants.STREAM_INITIAL_POSITION, position);
return ApplicationConstants.streamExecutionEnvironment.addSource(
new FlinkKinesisConsumer<>(inputStreamName, new SimpleStringSchema(), inputProperties));
}
Error:
Caused by: java.lang.IllegalStateException: Cannot load configuration class: com.pkg.config.ApplicationConfiguration
at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:415)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:268)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:325)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:147)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
at com.pkg.KinesisConsumerApplication.main(KinesisConsumerApplication.java:18)
... 25 more
Caused by: java.lang.ClassNotFoundException: com.pkg.config.ApplicationConfiguration
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:476)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:151)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:398)
KinesisConsumerApplication.java
#SpringBootApplication
#EnableAutoConfiguration
#ComponentScan(basePackages = "com.pkg")
public class KinesisConsumerApplication implements CommandLineRunner {
#Autowired
ApplicationContext ctx;
public static void main(String[] args) {
SpringApplication.run(KinesisConsumerApplication.class, args);
}
#Override
public void run(String... args) throws Exception {
GetKinesisRecords getKinesisRecords = ctx.getBean(GetKinesisRecords.class);
getKinesisRecords.getDataFromStream();
}
}
Maven pom.xml file
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<artifactId>kinesis-consumer</artifactId>
<build>
<plugins>
<plugin>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<artifactId>lombok</artifactId>
<groupId>org.projectlombok</groupId>
</exclude>
</excludes>
</configuration>
<groupId>org.springframework.boot</groupId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<artifactId>spring-boot-starter</artifactId>
<groupId>org.springframework.boot</groupId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<artifactId>flink-connector-kinesis_${scala.binary.version}</artifactId>
<groupId>org.apache.flink</groupId>
<version>1.13.2</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-streaming-java_${scala.binary.version}</artifactId>
<version>1.13.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<artifactId>flink-core</artifactId>
<groupId>org.apache.flink</groupId>
<version>1.13.2</version>
</dependency>
<dependency>
<artifactId>jackson-datatype-jsr310</artifactId>
<groupId>com.fasterxml.jackson.datatype</groupId>
</dependency>
<dependency>
<artifactId>spring-boot-starter-test</artifactId>
<groupId>org.springframework.boot</groupId>
<scope>test</scope>
</dependency>
<dependency>
<artifactId>junit</artifactId>
<groupId>junit</groupId>
<scope>test</scope>
</dependency>
<dependency>
<artifactId>ssai-common</artifactId>
<groupId>com.adsparx.phoenix</groupId>
<version>1.2.0</version>
</dependency>
<dependency>
<artifactId>flink-clients</artifactId>
<groupId>org.apache.flink</groupId>
<version>1.15.0</version>
</dependency>
<dependency>
<artifactId>jakarta.xml.bind-api</artifactId>
<groupId>jakarta.xml.bind</groupId>
</dependency>
<!-- Logging -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
</dependency>
</dependencies>
<description>Apache Kinesis Consumer</description>
<groupId>com.pkg</groupId>
<modelVersion>4.0.0</modelVersion>
<name>kinesis-consumer</name>
<parent>
<artifactId>spring-boot-starter-parent</artifactId>
<groupId>org.springframework.boot</groupId>
<relativePath/>
<version>2.4.0</version>
</parent>
<properties>
<java.version>11</java.version>
<scala.binary.version>2.12</scala.binary.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
<version>0.0.1-SNAPSHOT</version>
</project>
Things that I have tried on my end:
Clean build the project a couple of times.
Checked Java and Spring version in pom, as suggested in one of the
StackOverflow post.
Downgraded SpringBoot version from "2.7.0" to "2.4.0".
Added ComponentScan annotation in main class.
Tried changing the annotation from #Configuration to #Component.
Last but not least, tried google and stackoverflow.
Can someone please help me identify the error?

Is this because you're attempting to use dependencies for flink 1.15? AFAIK, 1.13 is the latest version supported. You need to choose which flink version you intend to use when creating the streaming application.

why a project that contain spring data dependency doesn't work on tomcat9?

I am trying to deploy a small springboot app on tomcat9 , the tomcat9 is on ubuntu 20 on my account in digital ocean .
the problem when i am adding the spring data dependency in the pom file :spring-boot-starter-data-jpa and then convert the jar file to war file by using mvn clean package or install command to be able to deploy it on tomcat9 its display an error:
FAIL - Application at context path [/heloworld-0.0.1-SNAPSHOT] could not be started
FAIL - Encountered exception [org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/heloworld-0.0.1-SNAPSHOT]]]
in another side the app work perfectly by running it on intellij and work also on my localhost tomcat9 ,
by the way I am using same java version on machine and tomcat9 (1.8)
<?xml version="1.0" encoding="UTF-8"?>
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.6</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>heloworld</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>heloworld</name>
<description>heloworld</description>
<packaging>war</packaging>
<properties>
<java.version>8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>2.3.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<version>2.5.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.25</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
16-May-2022 10:42:43.516 INFO [http-nio-8080-exec-395] org.apache.catalina.startup.HostConfig.undeploy Undeploying context [/heloworld-0.0.1-SNAPSHOT]
16-May-2022 10:42:45.516 INFO [mysql-cj-abandoned-connection-cleanup] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load []. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load []. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1385)
at org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClassLoaderBase.java:1038)
at com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.checkThreadContextClassLoader(AbandonedConnectionCleanupThread.java:123)
at com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:90)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
16-May-2022 10:42:53.336 INFO [http-nio-8080-exec-399] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [/var/lib/tomcat9/webapps/heloworld-0.0.1-SNAPSHOT.war]
16-May-2022 10:42:55.479 INFO [http-nio-8080-exec-399] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
16-May-2022 10:44:01.210 SEVERE [http-nio-8080-exec-399] org.apache.catalina.startup.HostConfig.deployWAR Error deploying web application archive [/var/lib/tomcat9/webapps/heloworld-0.0.1-SNAPSHOT.war]
java.lang.IllegalStateException: Error starting child
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:720)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:977)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:493)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1641)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:289)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1590)
at org.apache.catalina.manager.HTMLManagerServlet.upload(HTMLManagerServlet.java:294)
at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:212)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:211)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
1407,42-56 91%
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:666)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:375)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/heloworld-0.0.1-SNAPSHOT]]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717)
... 42 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:175)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:155)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:97)
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:174)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5135)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
... 43 more
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800)
... 62 more
Caused by: org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:112)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:37)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:71)
at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcConnection(ImprovedExtractionContextImpl.java:63)
at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcDatabaseMetaData(ImprovedExtractionContextImpl.java:70)
at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.processTableResultSet(InformationExtractorJdbcDatabaseMetaDataImpl.java:64)
at org.hibernate.tool.schema.extract.internal.AbstractInformationExtractorImpl.getTables(AbstractInformationExtractorImpl.java:559)
at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.getTablesInformation(DatabaseInformationImpl.java:122)
at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:68)
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:220)
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:123)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:196)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:85)
at org.hibernate.internal.SessionFactoryImpl.(SessionFactoryImpl.java:335)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:471)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1498)
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409)
... 66 more
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:829)
at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:449)
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:242)
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364)
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206)
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561)
at com.zaxxer.hikari.pool.HikariPool.(HikariPool.java:115)
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:181)
at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:44)
... 82 more
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:949)
1559,88-102 99%
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:819)
... 95 more
Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
... 98 more

You have defined to use the parent with version 2.6.6. Then you add dependencies for other components
which you like to use for example spring-boot-starter-security. In Spring boot the basic
idea is to use the components which are offered by the spring team. This means you should simply
define a component like the following:
<dependencies>
...
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
..
</dependencies>
Pay attention to the point that here no version is given. This means based on the parent,
the version is used which is given through the parent. This means you are using the following
artifact org.springframework.boot:spring-boot-dependencies:2.6.6 which contains all
components (usually defined by starters). For example spring-boot-starter-thymeleaf
which should be used like this:
<dependencies>
...
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
..
</dependencies>
But in contradiction to the idea you have used the starters, but unfortunately you have
defined also a versions like this:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>2.3.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<version>2.5.2</version>
</dependency>
..
</dependencies>
The given versions are different from the version of your used parent which should in sync.
Technically you can do that manually like this:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>2.6.6</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<version>2.6.6</version>
</dependency>
..
</dependencies>
But the easiest way (makes maintenance easier) is to omit the version. That in consequence
means the version is defined by the parent. This also makes an upgrade of a Spring Boot version
very easy because the only thing you need to change is version of your parent for example
like this:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
You have also defined a component in your pom.xml file with a particular version:
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.25</version>
</dependency>
So in the end your pom.xml file should look like this:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.6</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>heloworld</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>heloworld</name>
<description>heloworld</description>
<packaging>war</packaging>
<properties>
<java.version>8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

How to use embedded MongoDB with SpringBoot v2.6.2?

I'm using Spring Boot v2.6.2 and Java v17 and trying to test my MongoConnection without having a MongoDBService running because it should be tested with embedded in-memory MongoDB on the build machine, no need to set up an extra MongoDB service there.
For sure on the productive system, it should use a full MongoDB.
I try to get this easy example running:
#DataMongoTest
public class MongoTest
{
#Autowired
private UserRepository userRepository;
#AfterEach
void cleanUpDatabase()
{
this.userRepository.deleteAll();
}
#Test
void bootstrapTestDataWithMongoTemplate() {
final var restaurant = new User( "123", "ABC", "DEF" );
this.userRepository.insert( restaurant );
final var found = this.userRepository.findByFirstName( "ABC" );
System.out.println( found );
}
}
UserRepository is an interface that extends MongoRepository. User itself is just a DBEntity with #Document annotation. If I let the SpringBoot application run, not in test mode, everything works fine, because MongoDB is running at the specified location. But for the test, I want to let it run as an in-memory DB.
But Springboot wants to connect for the test.
2022-01-20 08:31:57.489 INFO 3976 --- [ main] org.mongodb.driver.cluster : Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms'}
2022-01-20 08:31:57.521 INFO 3976 --- [localhost:27017] org.mongodb.driver.cluster : Exception in monitor thread while connecting to server localhost:27017
com.mongodb.MongoSocketOpenException: Exception opening socket
at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:70) ~[mongodb-driver-core-4.4.0.jar:na]
at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:180) ~[mongodb-driver-core-4.4.0.jar:na]
at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.lookupServerDescription(DefaultServerMonitor.java:188) ~[mongodb-driver-core-4.4.0.jar:na]
at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:152) ~[mongodb-driver-core-4.4.0.jar:na]
at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
Caused by: java.net.ConnectException: Connection refused: no further information
at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]
at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:672) ~[na:na]
at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:542) ~[na:na]
at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597) ~[na:na]
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327) ~[na:na]
at java.base/java.net.Socket.connect(Socket.java:633) ~[na:na]
at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:107) ~[mongodb-driver-core-4.4.0.jar:na]
at com.mongodb.internal.connection.SocketStream.initializeSocket(SocketStream.java:79) ~[mongodb-driver-core-4.4.0.jar:na]
at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:65) ~[mongodb-driver-core-4.4.0.jar:na]
... 4 common frames omitted
Any suggestions on how to do this? Is #DataMongoTest testing in the wrong way? I thought the integrated flapdoodle dependency would inject it automatically in the test case.
The pom itself is also not that complex:
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.github.openjson</groupId>
<artifactId>openjson</artifactId>
<version>1.0.11</version>
</dependency>
<dependency>
<groupId>com.github.erosb</groupId>
<artifactId>everit-json-schema</artifactId>
<version>1.14.0</version>
</dependency>
</dependencies>

The documentation states:
2.2.4. Embedded Mongo
Spring Boot offers auto-configuration for Embedded Mongo. To use it in
your Spring Boot application, add a dependency on
de.flapdoodle.embed:de.flapdoodle.embed.mongo and set the
spring.mongodb.embedded.version property to match the version of
MongoDB that your application will use in production. The default
download configuration allows access to most of the versions listed in
Embedded Mongo’s Version class as well as some others. Configuring an
inaccessible version will result in an error when attempting to
download the server. Such an error can be corrected by defining an
appropriately configured DownloadConfigBuilderCustomizer bean.
The port that Mongo listens on can be configured by setting the
spring.data.mongodb.port property. To use a randomly allocated free
port, use a value of 0. The MongoClient created by
MongoAutoConfiguration is automatically configured to use the randomly
allocated port. If you do not configure a custom port, the embedded
support uses a random port (rather than 27017) by default.
If you have SLF4J on the classpath, the output produced by Mongo is
automatically routed to a logger named
org.springframework.boot.autoconfigure.mongo.embedded.EmbeddedMongo.
You can declare your own IMongodConfig and IRuntimeConfig beans to
take control of the Mongo instance’s configuration and logging
routing. The download configuration can be customized by declaring a
DownloadConfigBuilderCustomizer bean.
Therefore add the below dependency in scope:test if you want it to only be applied for Tests.
<dependency>
<groupId>de.flapdoodle.embed</groupId>
<artifactId>de.flapdoodle.embed.mongo</artifactId>
<scope>test</scope>
</dependency>
As well you need to set the version in your application.properties file:
spring.mongodb.embedded.version=4.0.21
https://docs.spring.io/spring-boot/docs/current/reference/html/data.html#data.nosql.mongodb.embedded
Working Example:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.mongodb.embedded</groupId>
<artifactId>mongodb-app</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>mongodb-app</name>
<description>Demo project for usage of embedded mongodb</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.16</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>de.flapdoodle.embed</groupId>
<artifactId>de.flapdoodle.embed.mongo</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<executions>
<execution>
<id>integration-test</id>
<goals>
<goal>test</goal>
</goals>
<phase>integration-test</phase>
<configuration>
<excludes>
<exclude>none</exclude>
</excludes>
<includes>
<include>**/*IT.java</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
UserRepository:
public interface UserRepository extends MongoRepository<User, Long> {
//Spring converts this to Regex findByFirstnameRegex(String firstname) {"firstname" : {"$regex" : firstname }}
// automatically
public List<User> findByFirstName(String firstName);
}
User:
#Data
#Builder
public class User {
#Id
private Long id;
private String firstName;
private String lastName;
}
Test:
#DataMongoTest
#TestInstance(TestInstance.Lifecycle.PER_CLASS)
public class UserControllerIT {
#Autowired
private UserRepository userRepository;
#BeforeAll
public void setup(){
userRepository.save(User.builder().id(1L).firstName("James").lastName("Bond").build());
userRepository.save(User.builder().id(2L).firstName("James").lastName("Farley").build());
userRepository.save(User.builder().id(3L).firstName("Marley").lastName("Hemp").build());
userRepository.save(User.builder().id(4L).firstName("James").lastName("Bond").build());
}
#Test
public void test_getById_successfull() throws Exception {
Assertions.assertEquals("James", userRepository.findByFirstName("James").get(0).getFirstName());
}
}
src/test/resources/application.properties
spring.data.mongodb.database=test
spring.data.mongodb.port=27017
spring.mongodb.embedded.version=4.0.2