控制标签（if、elseif、else） 

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"%>
 2 <%@ taglib uri="/struts-tags" prefix="struts"%>
 3 <%@ taglib uri="/struts-tags" prefix="s"%>
 4 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 5 <html>
 6 <head>
 7 <title>My JSP 'index.jsp' starting page</title>
 8 <meta http-equiv="pragma" content="no-cache">
 9 <meta http-equiv="cache-control" content="no-cache">
10 <meta http-equiv="expires" content="0">
11 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
12 <meta http-equiv="description" content="This is my page">
13 <!--
14     <link rel="stylesheet" type="text/css" href="styles.css">
15     -->
16     
17 <struts:head theme="ajax" />
18 
19 <style type="text/css">
20 body,td {
21     font-size: 12px;
22 }
23 </style>
24 </head>
25 
26 <body>
27 
28 <struts:fielderror></struts:fielderror>
29 
30 <struts:form action="if">    <!-- 提交给"if.action" -->
31     <struts:textfield name="name" label="姓名: "></struts:textfield>
32     <struts:submit value=" 提交 "></struts:submit>
33 </struts:form>
34 
35 <!-- 利用 request 参数判断 -->
36 <struts:if test="#parameters.name[0] == 'Kurt'">        <!-- 如果参数为Kurt -->
37     Hello, Kurt. 
38 </struts:if>
39 <struts:elseif test="#parameters.name[0] == 'Matt'">    <!-- 如果参数为Matt -->
40     Hello, Matt. 
41 </struts:elseif>
42 <struts:else>                                           <!-- 否则 -->
43     Hello, Other Buddies. 
44 </struts:else>
45 
46 <br/>
47 
48 <!-- 利用 action 属性判断 -->
49 <struts:if test="name == 'Kurt'">
50     Hello, Kurt. 
51 </struts:if>
52 <struts:elseif test="name == 'Matt'">
53     Hello, Matt. 
54 </struts:elseif>
55 <struts:else>
56     Hello, Other Buddies. 
57 </struts:else>
58 
59 <br/>
60 
61 <!-- 
62 <struts:set name="key" value="%{'You are welcome. '}"></struts:set>
63 <struts:property value="#key" /> <br/>
64 <struts:property value="%{#key}" /> <br/>
65 <struts:property value="key" /> <br/>
66  -->
67 
68 
69 </body>
70 </html>

 

posted @ 2015-07-03 20:42  Nick_zerui  阅读(1083)  评论(0)    收藏  举报