喜悦国际村 - JAVA/C/C++ - 请教各位大虾(页 1)

页: [1]

BOBI1201

2004-10-31 08:30 AM

请教各位大虾

HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

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

exception

org.apache.jasper.JasperException: /ch9/jsp_javabean/addMessage.jsp(2,0) The value for the useBean class attribute com.jspdev.ch9.MessageVO is invalid.
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:150)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1227)
org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Generator.generate(Generator.java:3272)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:244)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:470)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

--------------------------------------------------------------------------------

Apache Tomcat/5.0.28

我不懂怎么解决谢谢各位指教

雨伞	2004-10-31 08:36 AM

useBean某个属性（MessageVO ）值是错误的，把addMessage.jsp出错的几行代码贴出来

BOBI1201

2004-10-31 08:39 AM

谢谢这个是全部代码

<%@ page import="java.sql.*,com.jspdev.ch9.*,java.util.*,java.sql.*" errorPage="../error.jsp"%>
<jsp:useBean id="messageVo" class="com.jspdev.ch9.MessageVO" scope="page">
<jsp:setProperty name="messageVo" property="*"/>
</jsp:useBean>
<jsp:useBean id="messageBean" class="com.jspdev.ch9.MessageBean" scope="page"/>
<HTML>
<HEAD>
<TITLE>add message into table </TITLE>
</HEAD>
<BODY>
<%
try
{

messageBean.setMessage(messageVo);
messageBean.addMessage();
}
catch(Exception e)
{
e.printStackTrace();
}
%>
<jsp:forward page="viewMessages.jsp" />
</body>
</html>

雨伞	2004-10-31 08:43 AM

MessageVO类也贴出来，另外写进BEAN去的值类型匹配吗，有没有值。

雨伞	2004-10-31 08:59 AM

上面的代码没看见哪里有错，检查下你BEAN一些的大小写，路径，包等等有没有错。

BOBI1201

2004-10-31 09:03 AM

好的谢谢

thanks

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