初学jsp，遇到jsp中引用javabean的有关问题

2013-03-25

初学jsp，遇到jsp中引用javabean的问题TestBean.javapublic class TestBean {private String string1null

初学jsp，遇到jsp中引用javabean的问题
TestBean.java

public class TestBean {
private String string1=null;
private String string2=null;
public void setString1(String value){
string1=value;
}
public void setString2(String value){
string2=value;
}
public String getString1(){
return string1;
}
public String getString2(){
return string2;
}
}

useBean.jsp

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'MyJsp.jsp' starting page</title>
    
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">    
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

  </head>

  <body>
    HELLO,world!. <br>
<jsp:useBean id="test" class="TestBean"/>


<%
test.setString1("Hello");
test.setString2("woeld");
%>
<%
test.getString1();
 %>
<br>
<%
test.getString2();
%>
  </body>
</html>

错误信息：HTTP Status 500 - Unable to compile class for JSP:

type Exception report

message Unable to compile class for JSP:

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

exception

org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: 27 in the jsp file: /useBean.jsp
TestBean cannot be resolved to a type
24:
25:   <body>
26:     HELLO,world!. <br>
27: <jsp:useBean id="test" class="TestBean"/>
28:
29:
30: <%

An error occurred at line: 27 in the jsp file: /useBean.jsp
TestBean cannot be resolved to a type
24:
25:   <body>
26:     HELLO,world!. <br>
27: <jsp:useBean id="test" class="TestBean"/>
28:
29:
30: <%
请问大神们，怎么错的？要怎么改呢？
[解决办法]
赋值也不是你那样的，
有<jsp:setProperty property="username" name="users" value="hello"/>
property属性名称

name对象名称，对应的bean的属性
value所赋的值;

然后再<jsp:getProperty 来获取属性的值；

热点排行

Web开发

初学jsp，遇到jsp中引用javabean的有关问题