. 條件標(biāo)簽
JSTL:
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="${user.age <= 30 && user.age > 18}">
7 <font color="red" />
8 </c:when>
9 <c:otherwise>
10 <font color="green" />
11 </c:otherwise>
12 </c:choose>
13 </c:if>
Struts2:
1 <s:if test="#user.age <= 18">
2 <font color="blue" />
3 </s:if>
4 <s:elseif test="#user.age <= 30 && user.age > 18">
5 <font color="red" />
6 </s:elseif>
7 <font color="green" />
8 </s:else>
2. 迭代標(biāo)簽
JSTL:
1 <c:forEach var="user" items="${users}">
2 <c:out value="${user.userName}" />
3 </c:forEach>
4 <!-- 迭代固定次數(shù) -->
5 <c:forEach var="i" begin="1" end="10" step="3">
6 <c:out value="${i}" />
7 </c:forEach>
8 <!-- 這種循環(huán)相當(dāng)于for(int i=1; i<10; i++), 其中step是指迭代的步長(zhǎng),默認(rèn)為1. -->
Struts2:
1 <s:iterator value="#users" status="stuts">
2 <s:if test="#stuts.odd == true"> <!-- 判斷是否為奇數(shù)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相關(guān)標(biāo)簽
JSTL:
1 <!-- 絕對(duì)路徑 -->
2 <c:import url="http://127.0.0.1:8080/hello/hello.jsp" />
3 <!-- 相對(duì)路徑 -->
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 <!-- 傳遞參數(shù)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="${myurl}" />
13 <!-- 構(gòu)造URL -->
14 <c:url value="myurl" var="hello.jsp" scope="session">
15 <c:param name="userName" value="cyanbomb" />
16 </c:url>
Struts2:
1 <a href='<s:url value="/hello.jsp" />'>Hello</a><br />
2 <s:url id="url" value="/hello.jsp">
3 <s:param name="name">cyanbomb</s:param>
4 </s:url>
5 <s:a href="%{url}">Hello</s:a>
解除的疑問(wèn)，list遍歷問(wèn)題
像這樣一個(gè)list,里面有3條記錄,每條記錄包含兩個(gè)對(duì)象,我把結(jié)果集(lstRooms)request到了頁(yè)面,想遍歷顯示RrmRooms里的id,和RrmRoomType里的name.
我用JSTL實(shí)現(xiàn)如下:
1 <table>
2 <c:forEach var="rm" items="${lstRooms}">
3 <tr>
4 <td>${rm[0].id}</td>
5 <td>${rm[1].name}</td>
6 <tr>
7 </c:forEach>
8 </table>
STRUTS2實(shí)現(xiàn)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>