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为什么我用zk开发的程序过了十几个小时再访问就会出错

asked 2010-06-04 19:47:33 +0800

wu_qiang gravatar image wu_qiang
57 2

HTTP Status 500 -

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type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: org.zkoss.zk.ui.UiException: javax.servlet.jsp.JspException: javax.servlet.jsp.JspException: java.lang.NullPointerException: Null Pointer in Method Invocation
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:491)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause

org.zkoss.zk.ui.UiException: javax.servlet.jsp.JspException: javax.servlet.jsp.JspException: java.lang.NullPointerException: Null Pointer in Method Invocation
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
java.lang.reflect.Constructor.newInstance(Unknown Source)
org.zkoss.lang.Classes.newInstance(Classes.java:78)
org.zkoss.lang.Exceptions.wrap(Exceptions.java:164)
org.zkoss.zk.ui.UiException$Aide.wrap(UiException.java:46)
org.zkoss.jsp.zul.impl.RootTag$MyRichlet.service(RootTag.java:307)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:402)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:295)
org.zkoss.jsp.zul.impl.RootTag.doTag(RootTag.java:268)
org.apache.jsp.system.admin.tools_jsp._jspx_meth_z_005fpage_005f0(tools_jsp.java:196)
org.apache.jsp.system.admin.tools_jsp._jspService(tools_jsp.java:170)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause

javax.servlet.jsp.JspException: javax.servlet.jsp.JspException: java.lang.NullPointerException: Null Pointer in Method Invocation
org.apache.jsp.system.admin.tools_jsp$Helper.invoke(tools_jsp.java:403)
org.zkoss.jsp.zul.impl.RootTag$MyRichlet.service(RootTag.java:300)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:402)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:295)
org.zkoss.jsp.zul.impl.RootTag.doTag(RootTag.java:268)
org.apache.jsp.system.admin.tools_jsp._jspx_meth_z_005fpage_005f0(tools_jsp.java:196)
org.apache.jsp.system.admin.tools_jsp._jspService(tools_jsp.java:170)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause

javax.servlet.jsp.JspException: java.lang.NullPointerException: Null Pointer in Method Invocation
org.apache.jsp.system.admin.tools_jsp$Helper.invoke(tools_jsp.java:403)
org.zkoss.jsp.zul.impl.BranchTag.doTag(BranchTag.java:67)
org.apache.jsp.system.admin.tools_jsp._jspx_meth_z_005fwindow_005f0(tools_jsp.java:217)
org.apache.jsp.system.admin.tools_jsp.access$0(tools_jsp.java:201)
org.apache.jsp.system.admin.tools_jsp$Helper.invoke0(tools_jsp.java:287)
org.apache.jsp.system.admin.tools_jsp$Helper.invoke(tools_jsp.java:390)
org.zkoss.jsp.zul.impl.RootTag$MyRichlet.service(RootTag.java:300)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:402)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:295)
org.zkoss.jsp.zul.impl.RootTag.doTag(RootTag.java:268)
org.apache.jsp.system.admin.tools_jsp._jspx_meth_z_005fpage_005f0(tools_jsp.java:196)
org.apache.jsp.system.admin.tools_jsp._jspService(tools_jsp.java:170)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause

java.lang.NullPointerException: Null Pointer in Method Invocation
bsh.Name.invokeMethod(Unknown Source)
bsh.BSHMethodInvocation.eval(Unknown Source)
bsh.BSHPrimaryExpression.eval(Unknown Source)
bsh.BSHPrimaryExpression.eval(Unknown Source)
bsh.BSHBinaryExpression.eval(Unknown Source)
bsh.BSHBinaryExpression.eval(Unknown Source)
bsh.BSHArguments.getArguments(Unknown Source)
bsh.BSHMethodInvocation.eval(Unknown Source)
bsh.BSHPrimaryExpression.eval(Unknown Source)
bsh.BSHPrimaryExpression.eval(Unknown Source)
bsh.Interpreter.eval(Unknown Source)
bsh.Interpreter.eval(Unknown Source)
org.zkoss.zk.scripting.bsh.BSHInterpreter.exec(BSHInterpreter.java:119)
org.zkoss.zk.scripting.util.GenericInterpreter.interpret(GenericInterpreter.java:310)
org.zkoss.zk.ui.impl.PageImpl.interpret(PageImpl.java:787)
org.zkoss.zk.ui.impl.UiEngineImpl.execNonComponent(UiEngineImpl.java:753)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:553)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:563)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:531)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:498)
org.zkoss.zk.ui.impl.UiEngineImpl.createComponents(UiEngineImpl.java:819)
org.zkoss.zk.ui.impl.AbstractExecution.createComponents(AbstractExecution.java:189)
org.zkoss.zul.Include.afterCompose(Include.java:316)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild0(UiEngineImpl.java:637)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:587)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:531)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:498)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild0(UiEngineImpl.java:631)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:587)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:531)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:498)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild0(UiEngineImpl.java:631)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:587)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:531)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:563)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:531)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:498)
org.zkoss.zk.ui.impl.UiEngineImpl.createComponents(UiEngineImpl.java:819)
org.zkoss.zk.ui.impl.AbstractExecution.createComponents(AbstractExecution.java:189)
org.zkoss.zul.Include.afterCompose(Include.java:316)
org.zkoss.jsp.zul.impl.LeafTag.afterComposeComponent(LeafTag.java:281)
org.zkoss.jsp.zul.impl.BranchTag.doTag(BranchTag.java:83)
org.apache.jsp.system.admin.tools_jsp._jspx_meth_z_005finclude_005f1(tools_jsp.java:251)
org.apache.jsp.system.admin.tools_jsp.access$2(tools_jsp.java:238)
org.apache.jsp.system.admin.tools_jsp$Helper.invoke1(tools_jsp.java:341)
org.apache.jsp.system.admin.tools_jsp$Helper.invoke(tools_jsp.java:393)
org.zkoss.jsp.zul.impl.BranchTag.doTag(BranchTag.java:67)
org.apache.jsp.system.admin.tools_jsp._jspx_meth_z_005fwindow_005f0(tools_jsp.java:217)
org.apache.jsp.system.admin.tools_jsp.access$0(tools_jsp.java:201)
org.apache.jsp.system.admin.tools_jsp$Helper.invoke0(tools_jsp.java:287)
org.apache.jsp.system.admin.tools_jsp$Helper.invoke(tools_jsp.java:390)
org.zkoss.jsp.zul.impl.RootTag$MyRichlet.service(RootTag.java:300)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:402)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:295)
org.zkoss.jsp.zul.impl.RootTag.doTag(RootTag.java:268)
org.apache.jsp.system.admin.tools_jsp._jspx_meth_z_005fpage_005f0(tools_jsp.java:196)
org.apache.jsp.system.admin.tools_jsp._jspService(tools_jsp.java:170)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.26 logs.


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Apache Tomcat/6.0.26

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2 Replies

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answered 2010-06-05 08:07:50 +0800

le gravatar image le
84

貌似有缓存的. 时间太久,缓存就会过期, 开着的页面就会出错

link publish delete flag offensive edit

answered 2012-10-17 07:38:14 +0800

cbyyni gravatar image cbyyni
23 1

i haven't encountered this error ever

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Asked: 2010-06-04 19:47:33 +0800

Seen: 1,253 times

Last updated: Oct 17 '12

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