org.apache.openjpa.persistence.PersistenceException: 使用分布式事务时无法设置自动提交模式
org.apache.openjpa.persistence.PersistenceException: Cannot set auto-commit mode when using distributed transactions
我设置了简单的 java ee 项目并使用 jta 事务并使用 OpenJpa 2.4.2 作为 Jpa 提供程序、maven 3.3、eclipse 2020-06、jdk 8U2002、weblogic 12.4.2 和 java ee 6 并得到这个异常:
javax.ejb.EJBException: EJB Exception: : <openjpa-2.4.2-r422266:1777108 nonfatal general error> org.apache.openjpa.persistence.PersistenceException: Cannot set auto-commit mode when using distributed transactions
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:571)
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:467)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:160)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:164)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:122)
这是我的 persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="batch" transaction-type="JTA" >
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl </provider>
<jta-data-source>jdbc/new</jta-data-source>
<class>com.smartsoft.persistence.Person</class>
<validation-mode>NONE</validation-mode>
<properties>
<property name="openjpa.DynamicEnhancementAgent" value="false"/>
<property name="openjpa.RuntimeUnenhancedClasses" value="unsupported"/>
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
<property name="openjpa.Log" value="DefaultLevel=TRACE"/>
</properties>
</persistence-unit>
</persistence>
我有一个简单的实体 class,它有 firstName 和 lastName 以及 age 字段和 setter getter 方法。
和一个无状态 Ejb class,它使用 @PersistenceContext 注释注入 EntityManager 并具有调用 em.persist(Person) 的保存方法然后我将这个 dao 注入一个 servlet 并将一个人 class 传递给它。
这是我的 Weblogic.xml 文件:
<?xml version="1.0" encoding="UTF-8"?>
<wls:weblogic-web-app xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-web-app" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.4/weblogic-web-app.xsd">
<wls:context-root>persistence</wls:context-root>
<wls:container-descriptor>
<wls:prefer-web-inf-classes>true</wls:prefer-web-inf-classes>
</wls:container-descriptor>
</wls:weblogic-web-app>
这是我的道class:
@无状态
public class PersonEjb {
@PersistenceContext
private EntityManager entityManager;
private static final Logger logger =Logger.getLogger("PersonEjb");
public void save(Person person) {
entityManager.persist(person);
logger.info("persisted");
}
}
这是 servlet:
@WebServlet("/Serv1")
public class Serv1 extends HttpServlet {
private static final long serialVersionUID = 1L;
@EJB
private PersonEjb pe;
public Serv1() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Person p = new Person();
p.setAge(25);
p.setFirstName("hamidreza");
p.setLastName("abroshan");
pe.save(p);
response.getWriter().append("Served at: ").append(request.getContextPath());
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
您可以在 github.
下载该项目
谢谢分配。
作为OpenJpa documentation Section 2, “ Integrating with the Transaction Manager ”
说,我应该将 <property name="openjpa.TransactionMode" value="managed"/>
添加到 persistence.xml。
通过这个 属性,OpenJpa 明白应该使用容器的托管事务。
对于weblogic,我不需要配置“openjpa.ManagedRuntime”属性.
并根据 Section 2.1, “ Managed and XA DataSources ”.
“当使用托管数据源时,您还应该配置第二个非托管数据源,OpenJPA 可以使用它来执行独立于全局事务的任务。这些任务中最常见的是更新序列 table OpenJPA 用于生成唯一数据存储标识对象的主键值。“
注意:如果你没有设置AutoStrategy id generation,并且你之前创建了你的数据库的schema和sequence,并且remove
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
从您的 persistence.xml,您不需要第二个 none jta 数据源。
所以,这是我的 persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="batch" transaction-type="JTA" >
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl </provider>
<jta-data-source>jdbc/new</jta-data-source>
<class>com.smartsoft.persistence.Person</class>
<validation-mode>NONE</validation-mode>
<properties>
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
<property name="openjpa.Log" value="DefaultLevel=TRACE"/>
<property name="openjpa.TransactionMode" value="managed"/>
<property name="openjpa.ConnectionFactoryMode " value="managed"/>
<property name="openjpa.Connection2UserName" value="app"/>
<property name="openjpa.Connection2Password" value="app"/>
<property name="openjpa.Connection2URL" value="jdbc:derby://localhost:1527/testdb;create=false"/>
<property name="openjpa.Connection2DriverName" value="org.apache.derby.jdbc.ClientDriver"/>
</properties>
</persistence-unit>
</persistence>
我设置了简单的 java ee 项目并使用 jta 事务并使用 OpenJpa 2.4.2 作为 Jpa 提供程序、maven 3.3、eclipse 2020-06、jdk 8U2002、weblogic 12.4.2 和 java ee 6 并得到这个异常:
javax.ejb.EJBException: EJB Exception: : <openjpa-2.4.2-r422266:1777108 nonfatal general error> org.apache.openjpa.persistence.PersistenceException: Cannot set auto-commit mode when using distributed transactions
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:571)
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:467)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:160)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:164)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:122)
这是我的 persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="batch" transaction-type="JTA" >
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl </provider>
<jta-data-source>jdbc/new</jta-data-source>
<class>com.smartsoft.persistence.Person</class>
<validation-mode>NONE</validation-mode>
<properties>
<property name="openjpa.DynamicEnhancementAgent" value="false"/>
<property name="openjpa.RuntimeUnenhancedClasses" value="unsupported"/>
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
<property name="openjpa.Log" value="DefaultLevel=TRACE"/>
</properties>
</persistence-unit>
</persistence>
我有一个简单的实体 class,它有 firstName 和 lastName 以及 age 字段和 setter getter 方法。 和一个无状态 Ejb class,它使用 @PersistenceContext 注释注入 EntityManager 并具有调用 em.persist(Person) 的保存方法然后我将这个 dao 注入一个 servlet 并将一个人 class 传递给它。 这是我的 Weblogic.xml 文件:
<?xml version="1.0" encoding="UTF-8"?>
<wls:weblogic-web-app xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-web-app" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.4/weblogic-web-app.xsd">
<wls:context-root>persistence</wls:context-root>
<wls:container-descriptor>
<wls:prefer-web-inf-classes>true</wls:prefer-web-inf-classes>
</wls:container-descriptor>
</wls:weblogic-web-app>
这是我的道class: @无状态 public class PersonEjb {
@PersistenceContext
private EntityManager entityManager;
private static final Logger logger =Logger.getLogger("PersonEjb");
public void save(Person person) {
entityManager.persist(person);
logger.info("persisted");
}
}
这是 servlet:
@WebServlet("/Serv1")
public class Serv1 extends HttpServlet {
private static final long serialVersionUID = 1L;
@EJB
private PersonEjb pe;
public Serv1() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Person p = new Person();
p.setAge(25);
p.setFirstName("hamidreza");
p.setLastName("abroshan");
pe.save(p);
response.getWriter().append("Served at: ").append(request.getContextPath());
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
} 您可以在 github.
下载该项目谢谢分配。
作为OpenJpa documentation Section 2, “ Integrating with the Transaction Manager ”
说,我应该将 <property name="openjpa.TransactionMode" value="managed"/>
添加到 persistence.xml。
通过这个 属性,OpenJpa 明白应该使用容器的托管事务。
对于weblogic,我不需要配置“openjpa.ManagedRuntime”属性.
并根据 Section 2.1, “ Managed and XA DataSources ”.
“当使用托管数据源时,您还应该配置第二个非托管数据源,OpenJPA 可以使用它来执行独立于全局事务的任务。这些任务中最常见的是更新序列 table OpenJPA 用于生成唯一数据存储标识对象的主键值。“
注意:如果你没有设置AutoStrategy id generation,并且你之前创建了你的数据库的schema和sequence,并且remove
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
从您的 persistence.xml,您不需要第二个 none jta 数据源。
所以,这是我的 persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="batch" transaction-type="JTA" >
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl </provider>
<jta-data-source>jdbc/new</jta-data-source>
<class>com.smartsoft.persistence.Person</class>
<validation-mode>NONE</validation-mode>
<properties>
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
<property name="openjpa.Log" value="DefaultLevel=TRACE"/>
<property name="openjpa.TransactionMode" value="managed"/>
<property name="openjpa.ConnectionFactoryMode " value="managed"/>
<property name="openjpa.Connection2UserName" value="app"/>
<property name="openjpa.Connection2Password" value="app"/>
<property name="openjpa.Connection2URL" value="jdbc:derby://localhost:1527/testdb;create=false"/>
<property name="openjpa.Connection2DriverName" value="org.apache.derby.jdbc.ClientDriver"/>
</properties>
</persistence-unit>
</persistence>