JSTL与Struts2标签的使用对比

1. 条件标签
    JSTL: 

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> --> 1 <c:if test="${user.password == 'hello'}">
 2     <c:choose>
 3         <c:when test="${user.age <= 18}">
 4             <font color="blue" />
 5         </c:when>
 6         <c:when test="${user.age <= 30 && user.age > 18}">
 7             <font color="red" />
 8         </c:when>
 9         <c:otherwise>
10             <font color="green" />
11         </c:otherwise>
12     </c:choose>
13 </c:if>

    Struts2:

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->1 <s:if test="#user.age <= 18">
2     <font color="blue" />
3 </s:if>
4 <s:elseif test="#user.age <= 30 && user.age > 18">
5     <font color="red" />
6 </s:elseif>
7     <font color="green" />
8 </s:else>

2. 迭代标签
    JSTL:

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->1 <c:forEach var="user" items="${users}">
2     <c:out value="${user.userName}" />
3 </c:forEach>
4 <!-- 迭代固定次数 -->
5 <c:forEach var="i" begin="1" end="10" step="3">
6     <c:out value="${i}" />
7 </c:forEach>
8 <!-- 这种循环相当于for(int i=1; i<10; i++), 其中step是指迭代的步长,默认为1. -->

    Struts2:

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->1 <s:iterator value="#users" status="stuts">                
2     <s:if test="#stuts.odd == true">   <!-- 判断是否为奇数行 -->
3         <s:property value="userName" />
4     </s:if>
5     <s:else>
6         <s:property value="passWord" />
7     </s:else>
8 </s:iterator>

3. URL相关标签
    JSTL:

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> --> 1 <!-- 绝对路径 -->
 2 <c:import url="http://127.0.0.1:8080/hello/hello.jsp" />
 3 <!-- 相对路径 -->
 4 <c:import url="hello.jsp" />
 5 <!-- Encode -->
 6 <a href="<c:url value='hello.jsp'><c:param name='userName' value='cyanbomb' /></c:url>"></a>
 7 <!-- 传递参数到指定的URL -->
 8 <c:import url="hello.jsp" charEncoding="gb2312" >
 9     <c:param name="userName" value="cyanbomb" />
10 </c:import>
11 <!-- URL重定向 -->
12<c:redirect url="${myurl}" />
13 <!-- 构造URL -->
14 <c:url value="myurl" var="hello.jsp" scope="session">
15     <c:param name="userName" value="cyanbomb" />
16 </c:url>

    Struts2:

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->1 <a href='<s:url value="/hello.jsp" />'>Hello</a><br />
2 <s:url id="url" value="/hello.jsp">
3     <s:param name="name">cyanbomb</s:param>
4 </s:url>        
5 <s:a href="%{url}">Hello</s:a>

解除的疑问，list遍历问题

像这样一个list,里面有3条记录,每条记录包含两个对象,我把结果集(lstRooms)request到了页面,想遍历显示RrmRooms里的id,和RrmRoomType里的name.
我用JSTL实现如下:

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->1 <table>
2     <c:forEach var="rm" items="${lstRooms}">
3         <tr>
4             <td>${rm[0].id}</td>
5             <td>${rm[1].name}</td>
6         <tr>
7     </c:forEach>
8 </table>

STRUTS2实现如下:

1<table>
2     <s:iterator value="#lstRooms" status="stat">
3         <tr>
4             <td><s:property value="#lstRooms[#stat.index][0].id" /></td>
5             <td><s:property value="#lstRooms[#stat.index][1].name" /></td>
6         <tr>
7     </s:iterator>
8</table>

待更新...