jsp页面提交页面然后报错的问题
初学JSP遇到以下问题---
index.html页面代码如下
<p> <%@ page contentType= "text/html; charset=gb2312 " language= "java " import= "java.sql.* "
errorPage= " " %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN " "http://www.w3.org/TR/html4/loose.dtd ">
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> 无标题文档 </title>
</head>
<body>
<p align= "center "> 个人所得税计算器 </p>
<center>
当月总收入
<form name= "form1 " method= "post " action= "list.jsp ">
<p align= "center "> 当月总收入
<input type= "text " name= "earning "> <br>
当月个人所得税起征额
<input type= "text " name= "amount "> <br> </p>
<input type= "submit " name= "S1 " value= "提交 ">
<input type= "reset " name= "R1 " value= "重置 ">
</form>
</center>
</body>
</html>
list.jsp页面代码如下
<%@ page contentType= "text/html; charset=gb2312 " language= "java " import= "java.sql.* " errorPage= " " %>
<jsp:useBean id= "IncomeT " scope= "request " class= "accp.IncomeTax "/>
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> 显示个人所得税 </title>
</head>
<body> dfff
</body>
</html>
index页面提交以后就报错
org.apache.jasper.JasperException: /list.jsp(2,0) The value for the useBean class attribute accp.IncomeTax is invalid
好像是说我的JAVABEAN有问题?
如果我把list.jsp中的 <jsp:useBean> 这行动作去掉的话,就可以正确显示list.jsp页面
但是我就是看不出来我的useBean有问题。。
请大家来帮我看看,万分感谢
------解决方案--------------------因为你javabean 的构造方法不是公共的 所以出错 加上public 就OK了
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顺便问你 你哪学软件的?