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Hello guys I created a Maven project in eclipse (with WAR packaging) and imported the packages of models already mapped from another project, soon after I created a class to "load" a persistence factory but it returns the following error:
set 19, 2017 10:02:47 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!) org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:267) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:231) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:240) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:847) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:874) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:58) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39) at com.bluegestao.audisped.jpa.util.JpaUtilMaster.<clinit>(JpaUtilMaster.java:22) at Main.main(Main.java:7) Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [value=com.mysql.jdbc.Driver] at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:229) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible(DriverManagerConnectionProviderImpl.java:160) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator(DriverManagerConnectionProviderImpl.java:116) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:100) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:72) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:240) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:257) ... 15 more Caused by: java.lang.ClassNotFoundException: Could not load requested class : value=com.mysql.jdbc.Driver at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:217) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:226) ... 27 more Exception in thread "main" java.lang.NullPointerException at com.bluegestao.audisped.jpa.util.JpaUtilMaster.getEntityManager(JpaUtilMaster.java:29) at Main.main(Main.java:7)
Because I was using Maven this error was not supposed to be happening, I also tested the models in another project with functional Hibernate and had no problems (no mapping error) Have I seen people solve adding to the classpath of the project more so it wouldn’t be a kind of bad practice? since if the idea of you having a dependency manager wouldn’t be him doing this work for you? by the way I use Tomcat.
Pom used:
<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.bluegestao</groupId>
<artifactId>Projeto</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<!--Hibernate(implementação do JPA) -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.3.Final</version>
</dependency>
<!--Drive JDBC do banco MySQL -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<!--Primefaces - Implementação 6.0 -->
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>6.0</version>
</dependency>
<!--Implementação do JSF -->
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.faces</artifactId>
<version>2.2.14</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>prime-repo</id>
<name>Primefaces Maven Repository</name>
<url>http://repository.primefaces.org</url>
<layout>default</layout>
</repository>
</repositories>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
</project>
Post the code of your pom.xml, Make sure the mysql jar is in your local . m2 folder
– Marquezani
The header did not appear but the content is there, it is yes I have already deleted everything from the Repository folder and generated again but I was not successful.
– William.Andrade
@William.Andrade was just a format adjustment =] I always prefer to put code in blocks that start with 4 spaces. Put inside the tag
<code>does not have the expected effect– Jefferson Quesado
To see the execution classpath:
for (URL url: ((URLClassLoader) (Thread.currentThread().getContextClassLoader())).getURLs()) { url.getPath(); }; so it is possible to know which jars loaded– Jefferson Quesado
@Jeffersonquesado thanks for the answers and edits, but I had to format my computer here in the company and for some reason I had no problems running the same code, I was using Ubuntu and now I’m using Deepin and I had no problems with Hibernate, Do you have any idea what happens to a question that has no solution here? kk
– William.Andrade