实战1--应用EL表达式访问JavaBean的属性

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实战1--应用EL表达式访问JavaBean的属性

摘要：（1）编写index.jsp页面，用来收集用户的注册信息 <%@ page language="java" pageEncoding="GBK"%> <% String path = request.

（1）编写index.jsp页面，用来收集用户的注册信息

<%@ page language="java" pageEncoding="GBK"%><%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>应用EL表达式访问JavaBean的属性</title>    <link rel="stylesheet" type="text/css" href="CSS/style.css">  </head>    <body><form name="form1" method="post" action="deal.jsp">  <table width="403" height="230" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#666666">    <tr>      <td height="30" colspan="2" bgcolor="#EFEFEF">·用户注册</td>    </tr>    <tr>      <td width="88" align="center" bgcolor="#FFFFFF">用 户 名：</td>      <td width="359" bgcolor="#FFFFFF"><input name="username" type="text" id="username"></td>    </tr>    <tr>      <td align="center" bgcolor="#FFFFFF">密&nbsp;&nbsp;&nbsp;&nbsp;码：</td>      <td bgcolor="#FFFFFF"><input name="pwd" type="password" id="pwd"></td>    </tr>    <tr>      <td align="center" bgcolor="#FFFFFF">确认密码：</td>      <td bgcolor="#FFFFFF"><input name="repwd" type="password" id="repwd"></td>    </tr>    <tr>      <td align="center" bgcolor="#FFFFFF">性&nbsp;&nbsp;&nbsp;&nbsp;别：</td>      <td bgcolor="#FFFFFF"><input name="sex" type="radio" class="noborder" value="男">        男         <input name="sex" type="radio" class="noborder" value="女">        女</td>    </tr>    <tr>      <td align="center" bgcolor="#FFFFFF">爱&nbsp;&nbsp;&nbsp;&nbsp;好：</td>      <td bgcolor="#FFFFFF"><input name="affect" type="checkbox" class="noborder" id="affect" value="体育">体育 <input name="affect" type="checkbox" class="noborder" id="affect" value="美术">美术 <input name="affect" type="checkbox" class="noborder" id="affect" value="音乐">音乐 <input name="affect" type="checkbox" class="noborder" id="affect" value="旅游">旅游 </td>    </tr>    <tr>      <td colspan="2" align="center" bgcolor="#FFFFFF">        <input name="Submit" type="submit" class="btn_grey" value="提交">&nbsp;<input name="Submit2" type="reset" class="btn_grey" value="重置"></td>    </tr>  </table> </form>  </body></html>

（2）编写JavaBean

package com.wuyudong;public class UserForm {    private String username = "";    private String pwd = "";    private String sex = "";    private String[] affect = null;    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPwd() {        return pwd;    }    public void setPwd(String pwd) {        this.pwd = pwd;    }    public String getSex() {        return sex;    }    public void setSex(String sex) {        this.sex = sex;    }    public String[] getAffect() {        return affect;    }    public void setAffect(String[] affect) {        this.affect = affect;    }}

（3）编写deal.jsp页面

<%@ page language="java" pageEncoding="GBK"%><%request.setCharacterEncoding("GBK");%><jsp:useBean id="userForm" class="com.wuyudong.UserForm" scope="page"/><jsp:setProperty name="userForm" property="*"/><!-- jsp:setProperty name="userForm" property="affect" value='<%=request.getParameterValues("affect")%>'/> --><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <title>应用EL表达式访问JavaBean的属性</title>    <link rel="stylesheet" type="text/css" href="CSS/style.css">  </head>    <body>    <table width="403" height="218" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#666666">    <tr>      <td height="30" colspan="2" bgcolor="#EFEFEF">·显示用户填写的注册信息</td>    </tr>    <tr>      <td width="88" align="center" bgcolor="#FFFFFF">用 户 名：</td>      <td width="359" bgcolor="#FFFFFF">&nbsp;${userForm.username}</td>    </tr>    <tr>      <td align="center" bgcolor="#FFFFFF">密&nbsp;&nbsp;&nbsp;&nbsp;码：</td>      <td bgcolor="#FFFFFF">&nbsp;${userForm.pwd}</td>    </tr>    <tr>      <td align="center" bgcolor="#FFFFFF">性&nbsp;&nbsp;&nbsp;&nbsp;别：</td>      <td bgcolor="#FFFFFF">&nbsp;${userForm.sex}</td>    </tr>    <tr>      <td align="center" bgcolor="#FFFFFF">爱&nbsp;&nbsp;&nbsp;&nbsp;好：</td>      <td bgcolor="#FFFFFF">&nbsp;${userForm.affect[0]} ${userForm.affect[1]} ${userForm.affect[2]} ${userForm.affect[3]}</td>    </tr>    <tr>      <td colspan="2" align="center" bgcolor="#FFFFFF">        <input name="Button" type="button" class="btn_grey" value="返回" onClick="window.location.href='index.jsp'">&nbsp;</td>    </tr>  </table>  </body></html>

运行如下图所示：

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