I have a spring-boot-application standalone application which uses apache camel to consume a single file, convert it and send the contents to a rest endpoint.
The current working setup
The pom.xml looks 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 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>2.3.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.thehandofnod</groupId>
<artifactId>recommenderclient</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>recommenderclient</name>
<description>Client application which communicates with the different Recommender</description>
<properties>
<java.version>1.8</java.version>
<camel-spring-boot-starter-version>2.25.2</camel-spring-boot-starter-version>
<camel-bindy-version>2.25.2</camel-bindy-version>
<camel-jackson-starter-version>2.25.2</camel-jackson-starter-version>
<camel-http-starter-version>2.25.2</camel-http-starter-version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-spring-boot-starter</artifactId>
<version>${camel-spring-boot-starter-version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.camel/camel-bindy-starter -->
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-bindy-starter</artifactId>
<version>${camel-bindy-version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.camel/camel-jackson-starter -->
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-jackson-starter</artifactId>
<version>${camel-jackson-starter-version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.camel/camel-jetty-starter -->
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-http-starter</artifactId>
<version>${camel-http-starter-version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<!-- DB dependencies
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.ibm.db2</groupId>
<artifactId>jcc</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.oracle.database.jdbc</groupId>
<artifactId>ojdbc8</artifactId>
<scope>runtime</scope>
</dependency>
-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.restdocs</groupId>
<artifactId>spring-restdocs-webtestclient</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<executions>
<execution>
<id>enforce</id>
<configuration>
<rules>
<dependencyConvergence/>
</rules>
</configuration>
<goals>
<goal>enforce</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.asciidoctor</groupId>
<artifactId>asciidoctor-maven-plugin</artifactId>
<version>1.5.8</version>
<executions>
<execution>
<id>generate-docs</id>
<phase>prepare-package</phase>
<goals>
<goal>process-asciidoc</goal>
</goals>
<configuration>
<backend>html</backend>
<doctype>book</doctype>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.springframework.restdocs</groupId>
<artifactId>spring-restdocs-asciidoctor</artifactId>
<version>${spring-restdocs.version}</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
As you can see I currently use the dependency spring-boot-starter-web to keep the application and therefore the camel routes running. I do this because otherwise the FileConsumer just recognizes the file, creates the exchange but does not route it to the endpoint for processing. That's where my question starts.
The problem
If I don't use the dependency spring-boot-starter-web but want my standalone application to run just only once the routes are just started and shutdown without doing anything (see 'The wished setup')
The problem seems to be that the method ScheduledBatchPollingConsumer#isBatchAllowed sometimes returns false and sometimes returns true. I can't figure out why but to me it seems a timing problem because if I have luck the file is consumed and processed and if I don't have luck the Exchange is not processed.
The wished setup
So I don't want to use the spring-boot-starter-web dependency and I don't want to keep the application running. This should be my wished configuration:
application.properties
camel.component.properties.encoding=UTF-8
# general spring-boot settings
#camel.springboot.main-run-controller=true
#camel.springboot.name=Recommender
# I don't want to keep it running! Shutdown after file was processed is what I wish for.
#camel.springboot.endpoint-bridge-error-handler=true
#camel.springboot.log-mask=true
# common attributes
projectID=2
# customer data route & properties
customerdata.from=file:D:\\projects\\TMP\\RecommenderClientTests\\source?fileName=CUSTOMER_DATA.csv&move=\..\processed&initialDelay=2000&delay=1000
customerdata.to=direct:TransmitCustomerData
# transmit customer data route & properties
transmitcustomerdata.from=direct:TransmitCustomerData
#transmitcustomerdata.to=file:D:\\projects\\TMP\\Camel\\to\\customer? tempFileName=CustomerRequest_tmp.txt&fileName=Customer.json
transmitcustomerdata.to=http://u086:9002/prioritizer/project/customer/transmit?\
bridgeEndpoint=false&\
throwExceptionOnFailure=false&\
httpMethod=POST
transmitcustomerdata.append=false
# archive
archiv=file:D:\\projects\\TMP\\RecommenderClientTests\\archiv? fileName=$simple{exchangeId}-$simple{date:now:yyyyMMddHHmm}&fileExist=Append
The question
How can I configure the file endpoint so that the file is always consumed and processed and the routes are shutdown afterwards?
There are options you can configure to shutdown after N messages processed, or being idel for more than N seconds, or after N time etc.
For example
camel.springboot.duration-max-messages = 1
See more at the docs: https://camel.apache.org/camel-spring-boot/latest/spring-boot.html
Related
I am building a war using maven (mvn clean install), the build is successful but the problem is few spring-boot related jars are getting missed in the war file(I checked using jar tf command) and instead of that many other springboot related classes and layer.idx file is getting added. How to remove these so that they are not included in the war and all other spring related dependencies are added properly. I tried deleting the local maven repo but it didn't worked.
Here is my pom.xml -
pom.xml
<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>
<groupId>com.meco.test</groupId>
<artifactId>test-service</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>devTest</name>
<description>Development-Project</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.2</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.persistence/javax.persistence-api -->
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>javax.persistence-api</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.inject/javax.inject -->
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.glassfish.hk2/hk2-api -->
<dependency>
<groupId>org.glassfish.hk2</groupId>
<artifactId>hk2-api</artifactId>
<version>3.0.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.glassfish.jersey.core/jersey-server -->
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-server</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.json/javax.json-api -->
<dependency>
<groupId>javax.json</groupId>
<artifactId>javax.json-api</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.json.bind/javax.json.bind-api -->
<dependency>
<groupId>javax.json.bind</groupId>
<artifactId>javax.json.bind-api</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.ws.rs/javax.ws.rs-api -->
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.1.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.sshd/sshd-core -->
<dependency>
<groupId>org.apache.sshd</groupId>
<artifactId>sshd-core</artifactId>
<version>2.7.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.sshd/sshd-common -->
<dependency>
<groupId>org.apache.sshd</groupId>
<artifactId>sshd-common</artifactId>
<version>2.7.0</version>
<!-- <scope>test</scope> -->
</dependency>
<!-- https://mvnrepository.com/artifact/org.eclipse.jdt.core.compiler/ecj -->
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.6.1</version>
</dependency>
</dependencies>
<build>
<finalName>demon</finalName>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<configuration>
<generateBackupPoms>false</generateBackupPoms>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<release>11</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
These files are getting added unnecessarily - (Output of jar tf demon.war) [not the complete output]
org/
org/springframework/
org/springframework/boot/
org/springframework/boot/loader/
org/springframework/boot/loader/ClassPathIndexFile.class
org/springframework/boot/loader/ExecutableArchiveLauncher.class
org/springframework/boot/loader/JarLauncher.class
org/springframework/boot/loader/LaunchedURLClassLoader$DefinePackageCallType.class
org/springframework/boot/loader/LaunchedURLClassLoader$UseFastConnectionExceptionsEnumeration.class
org/springframework/boot/loader/LaunchedURLClassLoader.class
org/springframework/boot/loader/Launcher.class
org/springframework/boot/loader/MainMethodRunner.class
org/springframework/boot/loader/PropertiesLauncher$1.class
org/springframework/boot/loader/PropertiesLauncher$ArchiveEntryFilter.class
org/springframework/boot/loader/PropertiesLauncher$ClassPathArchives.class
org/springframework/boot/loader/PropertiesLauncher$PrefixMatchingArchiveFilter.class
org/springframework/boot/loader/PropertiesLauncher.class
org/springframework/boot/loader/WarLauncher.class
org/springframework/boot/loader/archive/
org/springframework/boot/loader/archive/Archive$Entry.class
org/springframework/boot/loader/archive/Archive$EntryFilter.class
org/springframework/boot/loader/archive/Archive.class
org/springframework/boot/loader/archive/ExplodedArchive$AbstractIterator.class
org/springframework/boot/loader/archive/ExplodedArchive$ArchiveIterator.class
org/springframework/boot/loader/archive/ExplodedArchive$EntryIterator.class
org/springframework/boot/loader/archive/ExplodedArchive$FileEntry.class
org/springframework/boot/loader/archive/ExplodedArchive$SimpleJarFileArchive.class
org/springframework/boot/loader/archive/ExplodedArchive.class
org/springframework/boot/loader/archive/JarFileArchive$AbstractIterator.class
org/springframework/boot/loader/archive/JarFileArchive$EntryIterator.class
org/springframework/boot/loader/archive/JarFileArchive$JarFileEntry.class
org/springframework/boot/loader/archive/JarFileArchive$NestedArchiveIterator.class
org/springframework/boot/loader/archive/JarFileArchive.class
org/springframework/boot/loader/data/
org/springframework/boot/loader/data/RandomAccessData.class
org/springframework/boot/loader/data/RandomAccessDataFile$1.class
org/springframework/boot/loader/data/RandomAccessDataFile$DataInputStream.class
org/springframework/boot/loader/data/RandomAccessDataFile$FileAccess.class
org/springframework/boot/loader/data/RandomAccessDataFile.class
org/springframework/boot/loader/jar/
org/springframework/boot/loader/jar/AbstractJarFile$JarFileType.class
org/springframework/boot/loader/jar/AbstractJarFile.class
org/springframework/boot/loader/jar/AsciiBytes.class
org/springframework/boot/loader/jar/Bytes.class
org/springframework/boot/loader/jar/CentralDirectoryEndRecord$1.class
org/springframework/boot/loader/jar/CentralDirectoryEndRecord$Zip64End.class
org/springframework/boot/loader/jar/CentralDirectoryEndRecord$Zip64Locator.class
org/springframework/boot/loader/jar/CentralDirectoryEndRecord.class
org/springframework/boot/loader/jar/CentralDirectoryFileHeader.class
org/springframework/boot/loader/jar/CentralDirectoryParser.class
org/springframework/boot/loader/jar/CentralDirectoryVisitor.class
org/springframework/boot/loader/jar/FileHeader.class
org/springframework/boot/loader/jar/Handler.class
org/springframework/boot/loader/jar/JarEntry.class
org/springframework/boot/loader/jar/JarEntryCertification.class
org/springframework/boot/loader/jar/JarEntryFilter.class
org/springframework/boot/loader/jar/JarFile$1.class
org/springframework/boot/loader/jar/JarFile$JarEntryEnumeration.class
org/springframework/boot/loader/jar/JarFile.class
org/springframework/boot/loader/jar/JarFileEntries$1.class
org/springframework/boot/loader/jar/JarFileEntries$EntryIterator.class
org/springframework/boot/loader/jar/JarFileEntries.class
org/springframework/boot/loader/jar/JarFileWrapper.class
org/springframework/boot/loader/jar/JarURLConnection$1.class
org/springframework/boot/loader/jar/JarURLConnection$JarEntryName.class
org/springframework/boot/loader/jar/JarURLConnection.class
org/springframework/boot/loader/jar/StringSequence.class
org/springframework/boot/loader/jar/ZipInflaterInputStream.class
org/springframework/boot/loader/jarmode/
org/springframework/boot/loader/jarmode/JarMode.class
org/springframework/boot/loader/jarmode/JarModeLauncher.class
org/springframework/boot/loader/jarmode/TestJarMode.class
org/springframework/boot/loader/util/
org/springframework/boot/loader/util/SystemPropertyUtils.class
WEB-INF/lib-provided/
WEB-INF/lib-provided/javax.servlet-api-4.0.1.jar
WEB-INF/lib/spring-boot-jarmode-layertools-2.5.2.jar
WEB-INF/layers.idx
I don't know why spring-boot-jarmode-layertools-2.5.2.jar is getting added and few other important jars which are part of the project are missing. These jars are missing -
spring-boot-starter-2.5.2.jar
spring-boot-starter-jersey-2.5.2.jar
spring-boot-starter-json-2.5.2.jar
spring-boot-starter-logging-2.5.2.jar
spring-boot-starter-tomcat-2.5.2.jar
spring-boot-starter-validation-2.5.2.jar
Please help.
First you don't need to execute install because you don't need the artifact in your local repository. You should execute package.
Second you have some plugins that are not needed. (Why did you change the pom.xml that Spring Boot Initializer generated?)
Remove
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<release>11</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
</plugin>
Then you have dependencies that will come from the starters anyway
You can remove everything that has the comment
<!-- https://mvnrepository.com/artifact/javax.persistence/<xy> -->
It looks like you want to use JPA so add the spring-boot-starter-data-jpa dependency.
Below is my pom.xml
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.java.hackathon</groupId>
<artifactId>com.java.hackathon</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>com.java.hackathon</name>
<url>http://maven.apache.org</url>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</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>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.codehaus.mojo</groupId>
<artifactId>sonar-maven-plugin</artifactId>
<version>3.6.0.1398</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.springdoc</groupId>
<artifactId>springdoc-openapi-ui</artifactId>
<version>1.5.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- junit 5 -->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.8.0</version>
<executions>
<execution>
<id>default-prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>default-report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Error message i am getting is
For artifact {org.springframework.boot:spring-boot-starter-data-jpa:null:jar}: The version cannot be empty. (org.apache.maven.plugins:maven-resources-
plugin:2.6:testResources:default-testResources:process-test-resources) org.apache.maven.artifact.InvalidArtifactRTException: For artifact
{org.springframework.boot:spring-boot-starter-data-jpa:null:jar}: The version cannot be empty. at
But in most of the cases what I observed most of them wont declare any version for spring-boot-starter-data-jpa and spring-boot-starter-web but i am getting these errors I am getting errors for all the dependencies where i had not declared version
So i want to know how to resolve these errors where version has not been declared or any plugins needed to be downloaded. I am executing the code in eclipse.
Normally you don't declare dependency versions when you have defined a dependencyManagement section in your POM where you centralize all of the dependencies used by all of your modules.
Since your POM does not define a dependencyManagement, you will need to provide the version for each dependency. You can check this sample guide project from Spring Boot, where you will notice that they set a parent in the POM:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
This parent will cause the POM to inherit a dependencyManagement section containing all of the versions of the spring-boot-starter-xx dependencies.
More details: https://docs.spring.io/spring-boot/docs/current/reference/html/using-spring-boot.html#using-boot-dependency-management
I am writing a new Spring Boot application and I need to use one package which has been developed by my team. This package has older Gson dependency somewhere down the hierarchy (which I could not find), therefore while running my application following error was thrown :
NoSuchMethodError: com.google.gson.GsonBuilder.setLenient()Lcom/google/gson/GsonBuilder.
I tried to
Specify the Gson dependency exclusively in my pom, so as to enforce the latest version
Add the dependency in DependencyManagement section
Exclude the Gson dependency as follows :
<dependency>
<groupId>com.mycompany</groupId>
<artifactId>services</artifactId>
<version>${version}</version>
<exclusions>
<exclusion>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</exclusion>
</exclusions>
</dependency>
All three options did not work. finally I was able to get my application running by excluding GsonAutoConfiguration.
Questions I am desperately trying to understand here:
Why the earlier options did not work
If I am skipping Gson AutoConfiguration, what am I losing and how can I achieve that?
Any help in this regard will be highly appreciated. Thanks in advance.
pom.xml
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>myapp</artifactId>
<version>1.0-SNAPSHOT</version>
<name>myapp</name>
<properties>
<java.version>1.8</java.version>
<spring.boot.version>2.1.7.RELEASE</spring.boot.version>
<camel.version>2.24.1</camel.version>
<lasius.wsutils.version>3.0.37</lasius.wsutils.version>
<mysql.connector.version>5.1.47</mysql.connector.version>
</properties>
<!--<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.7.RELEASE</version>
</parent>-->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-spring-boot-dependencies</artifactId>
<version>${camel.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!--Spring Boot dependencies-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!--<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>-->
<!-- camel dependencies -->
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-undertow-starter</artifactId>
</dependency>
<!-- test dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--being resolved from auth-->
<!--<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.9.3</version>
</dependency>-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.connector.version}</version>
</dependency>
<dependency>
<groupId>com.mycompany</groupId>
<artifactId>services</artifactId>
<version>${version}</version>
<exclusions>
<exclusion>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring.boot.version}</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
This question already has answers here:
Eclipse Error: Could not find or load main class [duplicate]
(8 answers)
Closed 4 years ago.
I am facing an error when I create jar with dependencies. I get following error when I run the jar:
Error: Could not find or load main class com.faro.engine.MainAppLoader
here is my pom.xml file
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>Faro</groupId>
<artifactId>Faro</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Faro</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<springfox-swagger.version>2.7.0</springfox-swagger.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- https://mvnrepository.com/artifact/com.googlecode.json-simple/json-simple -->
<dependency>
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-httpclient/commons-httpclient -->
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.restfb/restfb -->
<dependency>
<groupId>com.restfb</groupId>
<artifactId>restfb</artifactId>
<version>2.0.0-rc.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.facebook.business.sdk/facebook-java-business-sdk -->
<dependency>
<groupId>com.facebook.business.sdk</groupId>
<artifactId>facebook-java-business-sdk</artifactId>
<version>3.0.0</version>
</dependency>
<!-- swagger -->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>${springfox-swagger.version}</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>${springfox-swagger.version}</version>
</dependency>
<dependency>
<groupId>com.google.api-client</groupId>
<artifactId>google-api-client-gson</artifactId>
<version>1.23.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.0.4.RELEASE</version>
</dependency>
<dependency>
<groupId>com.fasterxml.uuid</groupId>
<artifactId>java-uuid-generator</artifactId>
<version>3.1.5</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20150729</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<addClasspath>true</addClasspath>
<mainClass>com.faro.engine.MainAppLoader</mainClass>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>com.faro.engine.MainAppLoader</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>assemble-all</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
I am able to run it in eclipse. but some ho when I generate jar, I get error 'Could not find or load main class com.faro.engine.MainAppLoader
here is my pom file'.
any ideas please?
thanks in advance :)
Some things you could check:
Is MainAppLoader under com.faro.engine package?
Is MainAppLoader annotated with #SpringBootApplication?
The spring-boot-maven-plugin already assembles your application as a jar with dependencies. Do you really need the maven-assembly-plugin?
As a sanity check, you could try replacing your plugin declaration with.
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
I have developed a spring boot application to run on google app engine with google sql and its working in local perfect. When i deploy the application and the rest url its working for sometime and after an hour i get the following . After deploying the code to google app engine i am able to fetch the records from database and doesnt fetch records after an hour. I am using Spring boot version 2.0.0.RELEASE and java 8
Error
org.hibernate.exception.JDBCConnectionException: Unable to open JDBC Connection for DDL execution
these are the configurations i am working with
POM.XML
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.6.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.googlecode.json-simple/json-simple -->
<dependency>
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<version>1.1.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.4.1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.cloud.sql/mysql-socket-factory -->
<dependency>
<groupId>com.google.cloud.sql</groupId>
<artifactId>mysql-socket-factory</artifactId>
<version>1.0.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-net/commons-net -->
<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
<version>3.6</version>
</dependency>
<dependency>
<groupId>com.google.api-client</groupId>
<artifactId>google-api-client</artifactId>
<version>1.21.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>2.0.0.RELEASE</version>
</plugin>
<!-- [START cloudplugin] -->
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>1.3.1</version>
</plugin>
<!-- [END cloudplugin] -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>display-dependency-updates</goal>
<goal>display-plugin-updates</goal>
</goals>
</execution>
</executions>
<configuration>
<excludes>
<exclude>javax.servlet:javax.servlet-api</exclude>
<exclude>com.google.guava:guava</exclude> <!-- avoid android version -->
</excludes>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
application.properties
spring.datasource.url=jdbc:mysql://google/fbconferencebot?cloudSqlInstance=conference:us-central1:appconference&socketFactory=com.google.cloud.sql.mysql.SocketFactory&user=root&password=*****
spring.jpa.hibernate.ddl-auto=none
spring.datasource.username=root
spring.datasource.password=*******
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.database=MYSQL
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
It's hard to tell without a more detailed stack trace, but you should replace Hibernate's connection pooling as it's not intended for production. This will handle the underlying connections. There is a good SO answer on configuring HikariCP w/ Spring Boot here.
Additionally, you should take a look at the Spring Boot Cloud SQL starter that Mike mentioned - it includes HikariCP as a dependency.