POJO类不是一个JavaBean，可能是没有一个无参构造函数
警告: Marshalling exception
org.directwebremoting.extend.MarshallException: Error marshalling com.demo.entity.User: com.demo.entity.User. See the logs for more details.
at org.directwebremoting.convert.BasicObjectConverter.convertInbound(BasicObjectConverter.java:151)
at org.directwebremoting.dwrp.DefaultConverterManager.convertInbound(DefaultConverterManager.java:159)
at org.directwebremoting.dwrp.BaseCallMarshaller.marshallInbound(BaseCallMarshaller.java:155)
at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:44)
at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.InstantiationException: com.demo.entity.User
at java.lang.Class.newInstance0(Class.java:340)
at java.lang.Class.newInstance(Class.java:308)
at org.directwebremoting.convert.BasicObjectConverter.convertInbound(BasicObjectConverter.java:84)
... 19 more
2012-7-17 10:03:45 org.directwebremoting.util.CommonsLoggingOutput warn
警告: --Erroring: batchId[0] message[org.directwebremoting.extend.MarshallException: Error marshalling com.demo.entity.User: com.demo.entity.User. See the logs for more details.]
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