1.仅使用ofbiz的实体引擎，程序如下：

  boolean beganTrans = true;   
    Map resignMap = new HashMap();
    resignMap.put("userLoginId", "wwww");
    resignMap.put("password", "1321313133");
    resignMap.put("signDaySeries","0");
    resignMap.put("isValidate", "1");
    Date date=new Date();
    DateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    String buildDate=format.format(date);
    resignMap.put("regeTime", buildDate);
    GenericDelegator delegator = GenericDelegator.getGenericDelegator("default");   

    try {      

        if (beganTrans)   
            

             beganTrans = TransactionUtil.begin();  
         
        GenericValue value=delegator.create("LotteryUser", resignMap);
     
        GenericValue value1=delegator.create("LotteryUser", resignMap);
        
        TransactionUtil.commit(beganTrans); 

                

    } catch (Exception e) {      

               e.printStackTrace();      

                  

               try {       

                        TransactionUtil.rollback(beganTrans);   

            } catch (GenericTransactionException e1) {       

                        e1.printStackTrace();   

            }   
        resp.getWriter().write("sorry");
    

}

实体引擎配置如下：

**出现的错误如下**

2016-06-29 16:23:14,439 675716 (http-0.0.0.0-8086-Processor3) [ TransactionUtil.java:349:WARN ]
---- exception report ----------------------------------------------------------
[TransactionUtil.setRollbackOnly] Calling transaction setRollbackOnly; this stack trace shows where this is happening:
Exception: java.lang.Exception
Message: null
---- stack trace ---------------------------------------------------------------
java.lang.Exception
org.ofbiz.entity.transaction.TransactionUtil.setRollbackOnly(TransactionUtil.java:349)
org.ofbiz.entity.transaction.TransactionUtil.rollback(TransactionUtil.java:286)
org.ofbiz.entity.GenericDelegator.create(GenericDelegator.java:723)
org.ofbiz.entity.GenericDelegator.create(GenericDelegator.java:656)
com.xbstar.wei.servlet.UserLogin.doGet(UserLogin.java:130)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:548)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)

java.lang.Thread.run(Unknown Source)

           *请问大神如何解决？*