JSP：JAVA Bean在JSP中的运用

来源：互联网发布：收费av网站源码编辑：程序博客网时间：2024/06/06 13:19

目录结构，如图:

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html>  <head>    <title>JSP测试</title>    <script language="javascript">    function check()    {      if(form1.name.value=="")      {        alert("姓名不能为空！");        return false;      }      else if(form1.age.value=="")      {       alert("年龄不能为空！");       return false;      }            return true;    }    </script>  </head>   <body>  <form action="Bean.jsp" method="post" id="form1" onsubmit="return check();">  姓名<input type="text" name="name" /><br/>  性别<select name="sex" >     <option value="男">男</option>     <option value="女">女</option>     </select>    <br/>  年龄<input type="text" name="age" /><br/><br/>  <input type="submit" value=" 提  交 "  />  <jsp:include page="Foot.jsp" />  </form>  </body>  </html>

Foot.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><p align="left" style="color:red">版权所有 盗版必究</p>

Person.java

package com.xieyuan;public class Person {private String name;private String sex;private String age;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getSex() {return sex;}public void setSex(String sex) {this.sex = sex;}public String getAge() {return age;}public void setAge(String age) {this.age = age;}}

Bean.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <title>My JSP 'Bean.jsp' starting page</title>  </head>    <body>  <!-- 声明JAVA BEAN -->   <jsp:useBean id="bean" class="com.xieyuan.Person" scope="page"/>   <%    request.setCharacterEncoding("UTF-8");    %>   <!-- 设置Persion的所有属性 -->   <jsp:setProperty name="bean" property="*" />   您的信息如下:<BR/>   <jsp:getProperty name="bean" property="name"/><br/>   <jsp:getProperty name="bean" property="sex"/><br/>   <jsp:getProperty name="bean" property="age"/><br/>  </body></html>

web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>  </web-app>

index.jsp效果如下:

提交后到Bean.jsp