JBoss 休眠：无法加载请求 class com.mysql.jdbc.Driver
JBoss Hibernate: Could not load requested class com.mysql.jdbc.Driver
我有一个与 postgresql 一起工作的 JBoss 安装...
我想改成 mySQL.
我下载了 mysql-connector-java-5.1.36-bin.jar 并将其放入 JBOSS_HOME/module/com/mysql/main，创建了 module.xml 并改变了我的 standalone.xml.
但是当我尝试启动服务器时，我得到了以下堆栈跟踪：
ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 48) MSC000001: Failed to start service jboss.persistenceunit."myapp.war#myapp": org.jboss.msc.service.StartException in service jboss.persistenceunit."myapp.war#myapp": javax.persistence.PersistenceException: [PersistenceUnit: myapp] Unable to build EntityManagerFactory
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.run(PersistenceUnitServiceImpl.java:103)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_20]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_20]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_20]
at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.1.Final-redhat-1.jar:2.1.1.Final-redhat-1]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: myapp] Unable to build EntityManagerFactory
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:924)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:899)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:76)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:200)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.access0(PersistenceUnitServiceImpl.java:57)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.run(PersistenceUnitServiceImpl.java:99)
... 4 more
Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: Specified JDBC Driver com.mysql.jdbc.Driver could not be loaded
at org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:111)
at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:85)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:184)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:156)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess(JdbcServicesImpl.java:223)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:89)
at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:85)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:184)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:156)
at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1825)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1783)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:96)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:914)
... 9 more
Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: Unable to load class [com.mysql.jdbc.Driver]
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:151)
at org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:106)
... 21 more
Caused by: java.lang.ClassNotFoundException: Could not load requested class : com.mysql.jdbc.Driver
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:318)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) [rt.jar:1.8.0_20]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) [rt.jar:1.8.0_20]
at java.lang.Class.forName0(Native Method) [rt.jar:1.8.0_20]
at java.lang.Class.forName(Class.java:340) [rt.jar:1.8.0_20]
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:148)
... 22 more
有人可以帮忙吗？
我的persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
version="2.1">
<persistence-unit name="myapp">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<!-- Annotated entity classes -->
<class>br.com.programadoremjava.ginga.test.myapp.entity.MyClassA</class>
<class>br.com.programadoremjava.ginga.test.myapp.entity.MyClassB</class>
<properties>
<!-- DADOS CONEXAO -->
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.username" value="application" />
<property name="hibernate.connection.password" value="application" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/myapp" />
<!-- CONFIGURACAO -->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
我的 standalone.xml 数据源配置：
<subsystem xmlns="urn:jboss:domain:datasources:1.2">
<datasources>
<datasource jta="true" jndi-name="java:/myapp-ds" pool-name="test" enabled="true" use-java-context="true" use-ccm="true">
<connection-url>jdbc:mysql://localhost:3306/myapp</connection-url>
<driver>com.mysql</driver>
<transaction-isolation>TRANSACTION_READ_COMMITTED</transaction-isolation>
<pool>
<min-pool-size>5</min-pool-size>
<max-pool-size>30</max-pool-size>
<prefill>true</prefill>
<use-strict-min>false</use-strict-min>
<flush-strategy>FailingConnectionOnly</flush-strategy>
</pool>
<security>
<user-name>application</user-name>
<password>application</password>
</security>
<statement>
<prepared-statement-cache-size>32</prepared-statement-cache-size>
</statement>
</datasource>
<drivers>
<driver name="com.mysql" module="com.mysql">
<xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
<driver-class>com.mysql.jdbc.Driver</driver-class>
</driver>
</drivers>
</datasources>
</subsystem>
我的JBOSS_HOME/module/com/mysql/main/module.xml
<module xmlns="urn:jboss:module:1.0" name="com.mysql">
<resources>
<resource-root path="mysql-connector-java-5.1.36-bin.jar"/>
</resources>
<dependencies>
<module name="javax.api"/>
</dependencies>
</module>
您必须引用 persistence.xml 中的 as 数据源
<jta-data-source>java:/jdbc/myapp-ds</jta-data-source> 并删除所有 hibernate.connection.* 属性。在那种情况下，连接由应用程序服务器管理，您不需要它在休眠中重新定义它。
我有一个与 postgresql 一起工作的 JBoss 安装... 我想改成 mySQL.
我下载了 mysql-connector-java-5.1.36-bin.jar 并将其放入 JBOSS_HOME/module/com/mysql/main，创建了 module.xml 并改变了我的 standalone.xml.
但是当我尝试启动服务器时，我得到了以下堆栈跟踪：
ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 48) MSC000001: Failed to start service jboss.persistenceunit."myapp.war#myapp": org.jboss.msc.service.StartException in service jboss.persistenceunit."myapp.war#myapp": javax.persistence.PersistenceException: [PersistenceUnit: myapp] Unable to build EntityManagerFactory
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.run(PersistenceUnitServiceImpl.java:103)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_20]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_20]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_20]
at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.1.Final-redhat-1.jar:2.1.1.Final-redhat-1]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: myapp] Unable to build EntityManagerFactory
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:924)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:899)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:76)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:200)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.access0(PersistenceUnitServiceImpl.java:57)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.run(PersistenceUnitServiceImpl.java:99)
... 4 more
Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: Specified JDBC Driver com.mysql.jdbc.Driver could not be loaded
at org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:111)
at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:85)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:184)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:156)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess(JdbcServicesImpl.java:223)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:89)
at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:85)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:184)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:156)
at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1825)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1783)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:96)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:914)
... 9 more
Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: Unable to load class [com.mysql.jdbc.Driver]
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:151)
at org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:106)
... 21 more
Caused by: java.lang.ClassNotFoundException: Could not load requested class : com.mysql.jdbc.Driver
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:318)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) [rt.jar:1.8.0_20]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) [rt.jar:1.8.0_20]
at java.lang.Class.forName0(Native Method) [rt.jar:1.8.0_20]
at java.lang.Class.forName(Class.java:340) [rt.jar:1.8.0_20]
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:148)
... 22 more
有人可以帮忙吗？
我的persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
version="2.1">
<persistence-unit name="myapp">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<!-- Annotated entity classes -->
<class>br.com.programadoremjava.ginga.test.myapp.entity.MyClassA</class>
<class>br.com.programadoremjava.ginga.test.myapp.entity.MyClassB</class>
<properties>
<!-- DADOS CONEXAO -->
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.username" value="application" />
<property name="hibernate.connection.password" value="application" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/myapp" />
<!-- CONFIGURACAO -->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
我的 standalone.xml 数据源配置：
<subsystem xmlns="urn:jboss:domain:datasources:1.2">
<datasources>
<datasource jta="true" jndi-name="java:/myapp-ds" pool-name="test" enabled="true" use-java-context="true" use-ccm="true">
<connection-url>jdbc:mysql://localhost:3306/myapp</connection-url>
<driver>com.mysql</driver>
<transaction-isolation>TRANSACTION_READ_COMMITTED</transaction-isolation>
<pool>
<min-pool-size>5</min-pool-size>
<max-pool-size>30</max-pool-size>
<prefill>true</prefill>
<use-strict-min>false</use-strict-min>
<flush-strategy>FailingConnectionOnly</flush-strategy>
</pool>
<security>
<user-name>application</user-name>
<password>application</password>
</security>
<statement>
<prepared-statement-cache-size>32</prepared-statement-cache-size>
</statement>
</datasource>
<drivers>
<driver name="com.mysql" module="com.mysql">
<xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
<driver-class>com.mysql.jdbc.Driver</driver-class>
</driver>
</drivers>
</datasources>
</subsystem>
我的JBOSS_HOME/module/com/mysql/main/module.xml
<module xmlns="urn:jboss:module:1.0" name="com.mysql">
<resources>
<resource-root path="mysql-connector-java-5.1.36-bin.jar"/>
</resources>
<dependencies>
<module name="javax.api"/>
</dependencies>
</module>
您必须引用 persistence.xml 中的 as 数据源
<jta-data-source>java:/jdbc/myapp-ds</jta-data-source> 并删除所有 hibernate.connection.* 属性。在那种情况下，连接由应用程序服务器管理，您不需要它在休眠中重新定义它。