TestItemBean.jsp(7,0) The value for the useBean class attribute ItemBean is invalid.
可能是<jsp:useBean id="XXX" class="XXX.VVV" scope="page"/>
语句错误。
可能是<jsp:useBean id="XXX" class="XXX.VVV" scope="page"/>
语句错误。
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<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<html>
<head>
<title>无标题文档</title>
</head>
<body>
<jsp:useBean id="itemBean" scope="session" class="ItemBean" />
<jsp:setProperty name="itemBean" property="*" />
项目:<jsp:getProperty name="itemBean" property="id"/><BR>
名称:<jsp:getProperty name="itemBean" property="desc"/><BR>
数量:<jsp:getProperty name="itemBean" property="qty"/><BR>
单价:<jsp:getProperty name="itemBean" property="price"/><BR>
</body>
</html>
如果放到class目录下,就会提示找不到bean,所以路径我觉得应该没有问题的
例子目录: C:\Tomcat5.028\webapps\mytest\WEB-INF\classes\org\apache\jsp JSP学习一
文件一: 4.5.htm<html>
<head><title>4.5.htm</title></head>
<body>
<form method="post" action="property.jsp">
请输入您的name:
<input type="text" name="used"><br>
请输入您的PWss:
<input type="text" name="pwss">
<input type="submit" value="submit">
</form>
</body>
</html>
文件二: property.jsp<html><%@page contentType="text/html;charset=gb2312"%>
<jsp:useBean id="atest" scope="page" class="propertyTest"/><head><title>property.jsp</title></head>
<body>
<jsp:setProperty name="atest" property="*" />
user name:
<jsp:getProperty name="atest" property="used"/><br>
user pwss:
<jsp:getProperty name="atest" property="pwss"/>
</body>
</html>
文件三: package org.apache.jsp ;public class propertyTest
{
String used = null ;
String pass = null ;
public propertyTest() {}
public void setUsed(String used)
{ this.used = used ; }
public void setPass(String pass)
{ this.pass = pass ; }
public String getName()
{ return used ;}
public String getPass()
{ return pass ; }
}运行后出现这个错误:HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: /property.jsp(4,0) The value for the useBean class attribute propertyTest 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已经三天了....还是没有决Jue啊.....头大的说.....
现在发上来,请大家帮帮我......
先谢谢各位了....
<jsp:useBean id="atest" scope="page" class="org.apache.jsp.propertyTest"/>