一个action动作中分别用两个数据源进行数据库操作报异常

yuyunyun051

您好。我自己定义了个action，在这个action操作里面，有两个数据源pcapp和system，需要查询pcapp数据源里面的某个表的数据，插入system数据源里面的另一个表。经过调试，java代码正常执行完毕，前台提示：Action[pcapp/pcapp_action/syncUserAction]执行失败，null。
后台错误如下：
2017-06-23 15:14:10 Action[pcapp/pcapp_action/syncUserAction]执行失败，null
java.lang.reflect.InvocationTargetException
        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:497)
        at com.justep.baas.action.Engine.execAction(Unknown Source)
        at com.justep.baas.action.Engine.execAction(Unknown Source)
        at com.justep.baas.servlet.BaasServlet.execService(Unknown Source)
        at com.justep.baas.servlet.BaasServlet.service(Unknown Source)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)
        at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
        at com.justep.baas.action.ActionContext.closeConnection(Unknown Source)
        at pcapp.Pcapp_action__do.syncUserAction(Pcapp_action__do.java:86)
        ... 20 more



进入Pcapp_action__do.java，查看86行代码如下图：



请问怎么处理？

liangyongfei

一个action执行多个动作，请假批处理
http://docs.wex5.com/wex5-server-question-list-2024/

使用
Connection conn1 = context.getConnection("pcapp");
Connection conn2 = context.getConnection("system");

获取两个connection对象 ，分别进行数据操作！

记得加上
conn1.setAutoCommit(false);
conn2.setAutoCommit(false);

yuyunyun051

好的，已解决。请揭帖