"Trying to load driver" when I add "com.mysql.cj.jdbc.Driver"

"Trying to load driver" when I add "com.mysql.cj.jdbc.Driver" - java

So I'm using JDBC MySQL 8.0.32, with Java 11 and Spring Boot 2.7.8. When I run "mvn spring-boot:run" it says "Trying to download driver" and I guess (and I'm sure) that it's because of com.mysql.cj.jdbc.Driver.
Here's the POM.xml 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>2.7.8</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>medica3</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>medica3</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</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-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.3.25</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.3.25</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.32</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</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>
Here's the application.properties file:
spring.datasource.url=jdbc:mysql://localhost:3306/med
spring.datasource.username=root
spring.datasource.password=
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
And here's where I make the connection:
import java.sql.Connection;
import java.sql.DriverManager;
public class Database {
protected Connection con;
private String url;
private String user;
private String pass;
public Database() throws Exception{
con = null;
this.url = "jdbc:mysql://localhost:3306/med";
this.user = "root";
this.pass = "";
Class.forName("com.mysql.cj.jdbc.Driver");
con = DriverManager.getConnection(url, user, pass);
}
}
I've also tried refreshing the project with maven, make clean install and invalidate caches, nothing works, it's still the same. I've also checked the classpath and everything's okay.

try com.mysql.jdbc.Driver driver. Yo are using .cj.jdbc.Driver which is dependent on <artifactId>mysql-connector-j</artifactId> I think and this is why Maven is trying to download it

Related

Maven - Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.1:run

I created my project at https://start.spring.io/
Several errors on the internet are similar but did not solve my problem.
when executing it I found an error return:
Failed to execute goal org.springframework.boot: spring-boot-maven-plugin: 2.4.1: run
Here are my POM and main file main
POM:
<?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>2.4.1</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>net.javaguides</groupId>
<artifactId>spring-boot-restfull-webservice</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot-restfull-webservice</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</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>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>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Class:
package net.javaguides.springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class SpringBootRestfullWebserviceApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootRestfullWebserviceApplication.class, args);
}
}
I'm new to Springboot, how do I fix it?

I've gotten your build to work, but I had to make some compromises.
I looked at the Spring documentation for what you are trying:
https://spring.io/guides/gs/rest-service/
Then I looked at the pom.xml for the example:
https://github.com/spring-guides/gs-rest-service/blob/master/complete/pom.xml
Despite the fact that the documentation says you can use Java 1.8 or higher, you need to use 1.8. If you go higher, you have to specify the property encoding in the plugin, and you can't do that because you are using the Spring Boot plugin rather than a plugin you can configure in the pom.xml for your project.
I also added a lower version of the maven-surefire-plugin than Spring Boot uses. With this version, you get the error [ERROR] There are test failures, but you are not running any tests.
I commented out the MySql and JPA dependencies, which won't work unless you have database connection settings.
<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>2.4.1</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>net.javaguides</groupId>
<artifactId>spring-boot-restful-webservice</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot-restful-webservice</name>
<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>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>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</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>
<version>2.5</version>
<configuration>
<skipTests>false</skipTests>
<testFailureIgnore>true</testFailureIgnore>
<forkMode>once</forkMode>
</configuration>
</plugin>
</plugins>
</build>
</project>

In my case i was running the jar file when i was activated maven install. The made it unable to delete and create a new jar as one was already running. After i quit running the jar file. I was able to build the project. sometimes reading error messages helps

Try to read well the exception log in cli, after executing your "mvn spring-boot:run" command.
It can be a due to
a connection with your DB, for example mysql not started
Or started but the DB name is not correct in your application.properties file e.g. java.sql.SQLSyntaxErrorException: Unknown database
Or even the password used of the db user is not correct in the application.properties file: e.g Caused by: java.sql.SQLNonTransientConnectionException: Public Key Retrieval is not allowed
so analyze first your logs before modifying java version, xml elements in the plugin ...
Normally this follwing generic pom.xml is enough to have maven running successfully your tomcat server (embedded in spring boot):
<?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>2.7.2</version>
<relativePath />
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</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>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>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

Deploy Springboot WAR to Tomcat 8.5 shows blank page

I can deploy / undeploy the Springboot WAR package to Tomcat 8.5 successfully using the tomcat manager,
but when I try to open the webpage it shows only blank white page.
what do I miss?
<?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>2.4.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>myapplication</artifactId>
<packaging>war</packaging>
<version>0.0.2</version>
<name>myapplication</name>
<description>My Application</description>
<properties>
<java.version>1.8</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-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
<exclusions>
<exclusion>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jdbc</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- exclude tomcat-jdbc, Spring Boot will use HikariCP automatically -->
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>6.2.2.jre8</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Is there any problem with the POM.xml ?
Also below is my application.properties
server.servlet.context-path=/myapplication
I've already trid to remove the context path and rebuild it again, but it still the same.

Apparently I must append this dependency in POM.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
Also I must add this
#SpringBootApplication
public class SpringBootTomcatApplication extends SpringBootServletInitializer {
}
Now it's working thanks.

Spring boot failed when trying to build a Rest service

Good afternoon I am trying to generate a Rest service with java spring boot, but when trying to execute the jar I get the following error, which is giving me a headache and I don't know what it is specifically:
java.lang.NoSuchMethodError:
org.springframework.data.repository.config.AnnotationRepositoryConfigurationSource.(Lorg/springframework/core/type/AnnotationMetadata;Ljava/lang/Class;Lorg/springframework/core/io/ResourceLoader;Lorg/springframework/core/env/Environment;)V
at
org.springframework.boot.autoconfigure.data.AbstractRepositoryConfigurationSourceSupport$1.(AbstractRepositoryConfigurationSourceSupport.java:67)
at
org.springframework.boot.autoconfigure.data.AbstractRepositoryConfigurationSourceSupport.getConfigurationSource(AbstractRepositoryConfigurationSourceSupport.java:66)
at
org.springframework.boot.autoconfigure.data.AbstractRepositoryConfigurationSourceSupport.registerBeanDefinitions(AbstractRepositoryConfigurationSourceSupport.java:58)
at
org.springframework.context.annotation.ImportBeanDefinitionRegistrar.registerBeanDefinitions(ImportBeanDefinitionRegistrar.java:86)
at
org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.lambda$loadBeanDefinitionsFromRegistrars$1(ConfigurationClassBeanDefinitionReader.java:385)
at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) at
org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromRegistrars(ConfigurationClassBeanDefinitionReader.java:384)
at
org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:148)
at
org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120)
at
org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331)
at
org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:236)
at
org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275)
at
org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95)
at
org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:706)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532)
at
org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752)
at
org.springframework.boot.SpringApplication.doRun(SpringApplication.java:347)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:295)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1112)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1101)
at
com.example.consulta.SpringBootSoapApp.main(SpringBootSoapApp.java:12)
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.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
java.lang.NoSuchFieldException: findAnnotationCache at
java.lang.Class.getDeclaredField(Class.java:2070) at
org.springframework.boot.devtools.restart.Restarter.clear(Restarter.java:376)
at
org.springframework.boot.devtools.restart.Restarter.cleanupKnownCaches(Restarter.java:361)
at
org.springframework.boot.devtools.restart.Restarter.cleanupCaches(Restarter.java:348)
at
org.springframework.boot.devtools.restart.Restarter.access$000(Restarter.java:81)
at
org.springframework.boot.devtools.restart.Restarter$1.call(Restarter.java:170)
at
org.springframework.boot.devtools.restart.Restarter$1.call(Restarter.java:165)
at
org.springframework.boot.devtools.restart.Restarter$LeakSafeThread.run(Restarter.java:602)
Annex my code
package com.example.consulta;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
main.class
#SpringBootApplication
public class SpringBootSoapApp {
public static void main(String[] args) {
SpringApplication.run(SpringBootSoapApp.class, args);
}
}
Controller
package com.example.consulta.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import com.example.consulta.entity.Cliente;
import com.example.consulta.service.ClienteService;
#RestController
public class ClienteController {
#Autowired
private ClienteService clienteService;
#GetMapping("/allCliente")
public List<Cliente> listarCliente(){
return clienteService.findAll();
}
#GetMapping("/cliente/{cedula}")
public Cliente detalleCliente(#PathVariable int cedula) {
return clienteService.findById(cedula);
}
}
DAO
package com.example.consulta.DAO;
import org.springframework.data.repository.CrudRepository;
import com.example.consulta.entity.Cliente;
public interface ClienteDAO extends CrudRepository<Cliente, Integer>{
}
Entity
package com.example.consulta.entity;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name="Cliente")
public class Cliente {
#Id
private int cedula;
private String nombre;
private String apellido;
private String tipo_cliente;
public int getCedula() {
return cedula;
}
public void setCedula(int cedula) {
this.cedula = cedula;
}
public String getNombre() {
return nombre;
}
public void setNombre(String nombre) {
this.nombre = nombre;
}
public String getApellido() {
return apellido;
}
public void setApellido(String apellido) {
this.apellido = apellido;
}
public String getTipo_cliente() {
return tipo_cliente;
}
public void setTipo_cliente(String tipo_cliente) {
this.tipo_cliente = tipo_cliente;
}
}
Service
package com.example.consulta.service;
import java.util.List;
import com.example.consulta.entity.Cliente;
public interface ClienteService {
public List<Cliente> findAll();
public Cliente findById(int cedula);
}
ServiceImpl
package com.example.consulta.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.example.consulta.DAO.ClienteDAO;
import com.example.consulta.entity.Cliente;
#Service
public class ClienteServiceImpl implements ClienteService{
#Autowired
private ClienteDAO clienteDao;
#Transactional
public List<Cliente> findAll() {
return (List<Cliente>) clienteDao.findAll();
}
public Cliente findById(int cedula) {
return clienteDao.findById(cedula).get();
}
}
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.example.consulta</groupId>
<artifactId>ServiceConsultaCliente</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>ServiceConsultaCliente</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.2.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>2.2.4.RELEASE</version>
</dependency>
<dependency>
<groupId>com.oracle.jdbc</groupId>
<artifactId>ojdbc8</artifactId>
<version>12.2.0.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<version>1.3.0.RELEASE</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>codelds</id>
<url>https://code.lds.org/nexus/content/groups/main-repo</url>
</repository>
</repositories>
</project>
application.properties
# Oracle settings
spring.application.name=prueba-microservicio-cliente
server.port=8001
spring.datasource.url=jdbc:oracle:thin:#//10.164.7.203:1521/ORCLPDB1.localdomain
spring.datasource.username=cesar
spring.datasource.password=xxxxx123
spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver
spring.jpa.hibernate.ddl-auto=update
UPDATE After doing what specified by Marcos Barrero I get the following error:
error i get:
pom.xml (final)
<?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>2.2.1.RELEASE</version>
</parent>
<groupId>com.example.consulta</groupId>
<artifactId>ServiceConsultaCliente</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>ServiceConsultaCliente</name>
<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.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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

Try to add spring boot parent pom. With it you shouldn't specify starters versions - parent pom contains all information about needed versions.
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
</parent>

From what I can see your problem is the way you're importing the dependencies, the recommended way to do so is by using the Spring Boot's parent pom and its managed dependencies.
I recommend you to use start.spring.io to generate your next projects, here's a sample with the Spring Boot dependencies that you have, the major diff is the parent pom.
For your project, you need to add the extra dependencies such as oracle and any further configuration you have.
<?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>2.2.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.consulta</groupId>
<artifactId>ServiceConsultaCliente</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>ServiceConsultaCliente</name>
<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.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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
UPDATE
Here's your version with h2 (you have to change it to oracle)
<?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>2.2.1.RELEASE</version>
</parent>
<groupId>com.example.consulta</groupId>
<artifactId>ServiceConsultaCliente</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>ServiceConsultaCliente</name>
<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>
<!-- change it to oracle driver -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

Try use this pom.xml
It was generated by https://start.spring.io/ and I inserted your Oracle dependencies and repositories.
<?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>2.2.4.RELEASE</version>
<relativePath/>
<!-- lookup parent from repository -->
</parent>
<groupId>com.example.consulta</groupId>
<artifactId>ServiceConsultaCliente</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>ServiceConsultaCliente</name>
<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>com.oracle.jdbc</groupId>
<artifactId>ojdbc8</artifactId>
<version>12.2.0.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>codelds</id>
<url>https://code.lds.org/nexus/content/groups/main-repo</url>
</repository>
</repositories>

When you face NoSuchMethodException at runtime, it generally means 'classpath hell' - e.g., for simplification, when you've got two version of the same library (one containing the method, but the other - not) and only god knows which version will actually get into your final build if you don't do anything.
To find such dependencies, you shoult run 'mvn dependency:tree' command and search for something related to 'org.springframework.boot.devtools'... => most probably you'll see two versions
Then - you should either use section of maven POM to strictly set the version, or, as guys suggested above - use spring boot parent (also, a more advanced solution is importing a BOM - which is kind of a set of rules for dependency versions).

spring websocket makes whole project returns 404

I add websocket to my normal springboot project ,both websocket server and my web api works fine in my local computer, But when I put my project to my server, not only the websocket connection url get 404, but also my web api get 404 either.
Here is my code
WebSocketConfig.java
#Configuration
public class WebSocketConfig {
#Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
}
WebSocketServer.java
#ServerEndpoint(value = "/socketServer/{carId}")
#Component
public class WebSocketServer {
private Session session;
private static Map<String, Session> sessionPool = new ConcurrentHashMap<>(16);
private static Map<String, String> sessionIds = new ConcurrentHashMap<>(16);
#OnOpen
public void onOpen(Session session, #PathParam(value = "carId") String carId) {
this.session = session;
sessionPool.put(carId, session);
sessionIds.put(session.getId(), carId);
}
#OnMessage
public void onMessage(String message) {
System.out.println(message);
}
#OnClose
public void onClose() {
sessionPool.remove(sessionIds.get(session.getId()));
sessionIds.remove(session.getId());
}
#OnError
public void onError(Session session, Throwable exception) {
exception.printStackTrace();
}
public static void sendMessage(String carId, String message) throws IOException {
Session session = sessionPool.get(carId);
if (session != null) {
session.getBasicRemote().sendText(message);
}
}
}
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.driver</groupId>
<artifactId>alipay</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>Alipay</name>
<description>Alipay MiniProgram</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<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-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</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-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.restdocs</groupId>
<artifactId>spring-restdocs-mockmvc</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

I solved my question after few tests
It seems this is the tomcat problem in your server side
Let us use the springboot inner tomcat
1.set your project packing type to jar
2.set your server.port except 80 and 8080 , I set it to 8081
3.use mvn clean package -DskipTests to package your project to jar
4.upload your jar file to your server except for the tomcat directory
5.run your code with java -jar YOURFILENAME.jar
Here is my pom.xml file after I change my code
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.driver</groupId>
<artifactId>websocket</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>WebSocket</name>
<description>WebSocket for MiniProgram</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

nested exception is java.lang.NoClassDefFoundError: org/springframework/data/mapping/IdentifierAccessor

I'm try to use Spring + JPA + PostgreSQL.
When I click in "Debug" I get the exception:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/springframework/data/mapping/IdentifierAccessor
The structure project is
application.properties
spring.datasource.url = jdbc:postgresql://localhost:5432/gastos
spring.datasource.username = postgres
spring.datasource.password = *******
spring.jpa.show-sql = true
spring.jpa.hibernate.ddl-auto = update
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQL9Dialect
Application.java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
#ComponentScan
#SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework</groupId>
<artifactId>gastos4</artifactId>
<version>0.1.0</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.4.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.8.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>1.2.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.4-1201-jdbc41</version>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
I didn't find a solution in the web. What am I doing wrong?

try adding Spring Data Commons Core to your pom
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons-core</artifactId>
<version>1.0.0.RELEASE</version>
</dependency>

I had the same problem and strangely enough I solved the problem by replacing the dependency spring-data-jpa with:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>

We Keep Coding

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

"Trying to load driver" when I add "com.mysql.cj.jdbc.Driver" - java

try com.mysql.jdbc.Driver driver. Yo are using .cj.jdbc.Driver which is dependent on <artifactId>mysql-connector-j</artifactId> I think and this is why Maven is trying to download it

Related

Maven - Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.1:run

Deploy Springboot WAR to Tomcat 8.5 shows blank page

Spring boot failed when trying to build a Rest service

spring websocket makes whole project returns 404

nested exception is java.lang.NoClassDefFoundError: org/springframework/data/mapping/IdentifierAccessor

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