项目经验------如何看错误信息

先上错误信息
AxisFault
 faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
 faultSubcode: 
 faultString: java.lang.ClassCastException: [Lcom.suntek.ctdmanager.ws.server.data.NameParameter;
 faultActor: 
 faultNode: 
 faultDetail: 
	{http://xml.apache.org/axis/}hostname:zwz

java.lang.ClassCastException: [Lcom.suntek.ctdmanager.ws.server.data.NameParameter;
	at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder.java:222)
	at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.java:129)
	at org.apache.axis.encoding.DeserializationContext.endElement(DeserializationContext.java:1087)
	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
	at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at javax.xml.parsers.SAXParser.parse(SAXParser.java:375)
	at org.apache.axis.encoding.DeserializationContext.parse(DeserializationContext.java:227)
	at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696)
	at org.apache.axis.Message.getSOAPEnvelope(Message.java:435)
	at org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnderstandChecker.java:62)
	at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)
	at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
	at org.apache.axis.client.Call.invoke(Call.java:2767)
	at org.apache.axis.client.Call.invoke(Call.java:2443)
	at org.apache.axis.client.Call.invoke(Call.java:2366)
	at org.apache.axis.client.Call.invoke(Call.java:1812)
	at com.suntek.ctdmanager.ws.client.data.WimsDataSyncInterfaceHttpBindingStub.createDevInfo(WimsDataSyncInterfaceHttpBindingStub.java:487)
	at com.suntek.ctdmanager.user.syn.DevInfoSyn.synSave(DevInfoSyn.java:32)
	at com.suntek.ctdmanager.user.syn.AbstractDaoSyn.start(AbstractDaoSyn.java:32)
	at com.suntek.ctdmanager.user.DevInfoDao.syn(DevInfoDao.java:160)
	at com.suntek.ctdmanager.user.DevInfoDao.insertDev(DevInfoDao.java:117)
	at com.suntek.ctdmanager.user.DevInfoDao.updateDev(DevInfoDao.java:78)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at com.suntek.ccf.web.protocal.util.ClassUtil.invokeMethod(ClassUtil.java:170)
	at com.suntek.ccf.web.service.ServiceInvoker.invoke0(ServiceInvoker.java:74)
	at com.suntek.ccf.web.service.ServiceInvoker.invoke(ServiceInvoker.java:44)
	at com.suntek.ccf.web.service.BeanWorker.processRequest(BeanWorker.java:31)
	at com.suntek.ccf.web.servlet.DispatchServiceServlet.doRequest(DispatchServiceServlet.java:114)
	at com.suntek.ccf.web.servlet.DispatchServiceServlet.doPost$eap(DispatchServiceServlet.java:61)
	at com.suntek.ccf.web.servlet.DispatchServiceServlet.doPost(DispatchServiceServlet.java)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:838)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
	at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:420)
	at com.suntek.eap.web.authen.agent.SSOAgentValve.invoke(SSOAgentValve.java:156)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
	at java.lang.Thread.run(Thread.java:595)



1。 从上往下看。。。。。本来看书的顺序也是这样子的嘛。。。。

2。从上往下找自己写的类，找到第一个就打住。。。。下面的信息就都没用了，因为从上往下出现的你写的第一个类就是出错的地方。。。如果你认为你写的没有错误，那么错误就是你的类里面埋藏的错误，因为很可能以前的某个地方你就放入了一个引起错误的东西放到了你的类里面。。。。所以从自己的类开始向上面找，看看其他代码是在解析你代码的哪个地方出的错。。。。


3。看（）里面的东西，他指明了在哪一行出的错。。。。。


总结一句就是往上面看错误。。。。越是上面越是细节。。。第一个是真正错误的所在