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尝试使用 Tomcat、Atomikos、ActiveMQ 和 MySql 使事务正常工作。遵循这些示例： Tomcat 7 Integration with Atomikos 3.5.2 和Tomcat 7.0.27 Integration with Atomikos 3.7.1 with no success...

ERROR: com.atomikos.icatch.jta.UserTransactionManager cannot be cast to javax.transaction.TransactionManager
java.lang.ClassCastException: com.atomikos.icatch.jta.UserTransactionManager cannot be cast to javax.transaction.TransactionManager

使用：

  • 雄猫 7.0.29
  • Atomikos 3.7.1
  • 活动MQ 5.8.0
  • MySQL 5.5.31

将以下 jar 放在 $TOMCAT_HOME/lib 下

  • atomikos-integration-extension-3.7.1-20120529.jar
  • atomikos-util-3.7.1.jar
  • 交易3.7.1.jar
  • 交易-api-3.7.1.jar
  • 事务-jdbc-3.7.1.jar
  • 交易-jms-3.7.1.jar
  • 交易-jta-3.7.1.jar
  • geronimo-jta_1.0.1B_spec-1.0.jar
  • activemq-all-5.8.0.jar
  • mysql-connector-java-5.1.25.jar

这是transactions.properties的内容

com.atomikos.icatch.service=com.atomikos.icatch.standalone.UserTransactionServiceFactory
com.atomikos.icatch.automatic_resource_registration=true
com.atomikos.icatch.output_dir=../work/atomikos
com.atomikos.icatch.log_base_dir=../work/atomikos/log
com.atomikos.icatch.enable_logging=true
com.atomikos.icatch.console_log_level=TRACE

上下文.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <Context>
    <WatchedResource>WEB-INF/web.xml</WatchedResource>
    <Transaction factory="com.atomikos.icatch.jta.UserTransactionFactory" />

    <Resource name="TransactionManager"
          auth="Container"
          type="com.atomikos.icatch.jta.UserTransactionManager"
          factory="org.apache.naming.factory.BeanFactory" />

    <Resource name="UserTransaction"
          auth="Container"
          type="com.atomikos.icatch.jta.UserTransactionImp"
          factory="org.apache.naming.factory.BeanFactory" />                 

    <Resource name="jms/ConnectionFactory"
            auth="Container"
            description="JMS Connection Factory"
            type="com.atomikos.jms.AtomikosConnectionFactoryBean"
            factory="com.atomikos.tomcat.EnhancedTomcatAtomikosBeanFactory"
            uniqueResourceName="jms/ConnectionFactory"
            xaConnectionFactoryClassName="org.apache.activemq.ActiveMQXAConnectionFactory"
            xaProperties.brokerURL="vm://localhost"
            xaProperties.transportType="1"
            localTransactionMode="true" />

    <Resource name="jms/WsTopic" 
          auth="Container"
          type="org.apache.activemq.command.ActiveMQTopic" 
          factory="org.apache.activemq.jndi.JNDIReferenceFactory"
          physicalName="WS.TOPIC" />

    <Resource name="jms/WsQueue" 
          auth="Container"
          type="org.apache.activemq.command.ActiveMQQueue"
          factory="org.apache.activemq.jndi.JNDIReferenceFactory" 
          physicalName="WS.QUEUE" />


   <!--  MySQL -->
   <Resource name="jdbc/DB"
          auth="Container"
          type="com.atomikos.jdbc.AtomikosDataSourceBean"
          factory="com.atomikos.tomcat.EnhancedTomcatAtomikosBeanFactory"
          uniqueResourceName="jdbc/DB"
          minPoolSize="5"
          maxPoolSize="10"
          testQuery="SELECT 1 FROM DUAL"             
          xaDataSourceClassName="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource"
          xaProperties.databaseName="db"
          xaProperties.serverName="localhost"
          xaProperties.port="3306"
          xaProperties.user="user"
          xaProperties.password="password"
          xaProperties.url="jdbc:mysql://localhost:3306/db"
          xaProperties.pinGlobalTxToPhysicalConnection="true"
          xaProperties.autoReconnect="true"
          xaProperties.autoReconnectForConnectionPools="true"
          xaProperties.autoReconnectForPools="true" />
</Context>

相关java代码：

import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;
...

Hashtable<String, String> hashTable = new Hashtable<String, String>();
try {
    Context ctx = new InitialContext(hashTable);
    ctx = (Context) jndiContext.lookup("java:comp/env");

    TransactionManager transactionManager = (TransactionManager) ctx.lookup("TransactionManager");
} catch (Exception e) {
    e.printStackTrace();
}

我究竟做错了什么？

编辑：

从 $TOMCAT_HOME/lib 中删除 activemq-all-5.8.0.jar 后，我能够克服原来的错误，但现在我得到了：

com.atomikos.jms.AtomikosJMSException: Error in proxy
at com.atomikos.jms.AtomikosJMSException.throwAtomikosJMSException(AtomikosJMSException.java:54)
at com.atomikos.jms.ConsumerProducerSupport.handleException(ConsumerProducerSupport.java:61)
at com.atomikos.jms.AtomikosJmsMessageConsumerProxy.receive(AtomikosJmsMessageConsumerProxy.java:73)
at com.atomikos.jms.AtomikosJmsMessageConsumerProxy.receive(AtomikosJmsMessageConsumerProxy.java:137)
...
at java.lang.Thread.run(Thread.java:619)
Caused by: com.atomikos.jms.AtomikosTransactionRequiredJMSException: The JMS session you are using requires a JTA transaction context for the calling thread and none was found.
Please correct your code to do one of the following: 
1. start a JTA transaction if you want your JMS operations to be subject to JTA commit/rollback, or
2. increase the maxPoolSize of the AtomikosConnectionFactoryBean to avoid transaction timeout while waiting for a connection, or
3. create a non-transacted session and do session acknowledgment yourself, or
4. set localTransactionMode to true so connection-level commit/rollback are enabled.
    at com.atomikos.jms.AtomikosTransactionRequiredJMSException.throwAtomikosTransactionRequiredJMSException(AtomikosTransactionRequiredJMSException.java:38)
    at com.atomikos.jms.ConsumerProducerSupport.enlist(ConsumerProducerSupport.java:107)
    at com.atomikos.jms.AtomikosJmsMessageConsumerProxy.receive(AtomikosJmsMessageConsumerProxy.java:70)
    ... 5 more
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1 回答 1

4

Tomcat 使用多个类加载器。查看它们的定义，它是如何工作的以及哪个优先（bootstrap、system、webapp、common）。我假设您将geronimo-jta_1.0.1B_spec-1.0.jar和/或transactions-jta-3.7.1.jar放在 WAR 文件webapp.war/WEB-INF/lib/中，除了$TOMCAT_HOME/lib/. 这可能会导致问题，因为javax.transaction.TransactionManager该类将由不同的类加载器多次加载。即使该类具有相同的名称，如果它由不同的类加载器加载，转换也会失败。

  1. 当Tomcat初始化由. _context.xml _ com.atomikos.icatch.jta.UserTransactionManager（Tomcat 目前不使用任何webapp类加载器。）

  2. 您javax.transaction.TransactionManager在 Web 应用程序中使用该类，现在它将使用webapp类加载器从位于webapp.war/WEB-INF/lib/WAR 文件内的文件夹中的 JAR 文件的副本加载。

尝试从 中删除包含javax.transaction.TransactionManager该类的 JAR 文件webapp.war/WEB-INF/lib/并尝试重新部署您的应用程序。

或者，在系统变量中列出这些 JAR 文件，CLASSPATH这样这些类将由在 Tomcat 中具有优先权的系统类加载器加载。

于 2013-06-24T18:45:22.680 回答