案例——基于JavaBean求任意两代数和

 1 //Add.java
 2 package beans;
 3 
 4 public class Add 
 5 {
 6     private int data1;
 7     private int data2;
 8     private int sum;
 9     public Add(){}
10     public int getData1(){return data1;}
11     public void setData1(int data1){this.data1=data1;}
12     public int getData2(){return data2;}
13     public void setData2(int data2){this.data2=data2;}
14     public int getSum(){return data1+data2;}
15     public void setSum(int sum){this.sum=sum;}
16 }

 1 //input.jsp
 2 <%@ page language="java" pageEncoding="UTF-8"%>
 3 <form  action="show.jsp" method="post">
 4     <table>
 5         <tr><td align="right">加数：</td>
 6             <td><input name="data1"></td>
 7         </tr>
 8         <tr><td align="right">被加数：</td>
 9             <td><input name="data2"></td>
10         </tr>
11         <tr><td></td>
12             <td><input type="submit" value="提交"></td>
13         </tr>
14     </table>
15 </form>

 1 //show.jsp
 2 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 3 <html>
 4   <head>   
 5     <title>利用JavaBean+JSP求两数和</title>
 6   </head>
 7   
 8   <body>
 9     <jsp:useBean id="c" class="beans.Add" scope="request"/>
10     <jsp:setProperty name="c" property="*"/>
11     <p>调用jsp:getProperty作标签显示结果值：<br>
12         <jsp:getProperty name="c" property="data1"/>+
13         <jsp:getProperty name="c" property="data2"/>=
14         <jsp:getProperty name="c" property="sum"/>
15     </p>
16   </body>
17 </html>

posted on 2017-10-31 22:43 小星_log 阅读(181) 评论(0) 收藏举报