简介
JSTL（Java ServerPages Standard Tab Library） JSP标准标签库
JSTL前缀URL范例核心标签库chttp://java.sun.com/jsp/jstl/core<c:out>I18N格式标签库fmthttp://java.sun.com/jsp/jstl/xml<fmt:formatDate>SQL标签库sqlhttp://java.sun.com/jsp/jstl/sql<sql:query>XML标签库xmlhttp://java.sun.com/jsp/jstl/fmt<x:forBach>函数标签库fnhttp://java.sun.com/jsp/jstl/function<fn:sqlit>
核心标签库
核心标签库名称功能<c:out> <c:set> <c:remove> <c:catch>表达式操作<c:if> <c:choose> <c:when> <c:otherwise>流程控制操作<c:forEach> <c:forTokens>迭代操作<c:param> <c:import> <c:redirect> <c:url>URL操作
out if choose when otherwise
<jsp:useBean id="people" class="cn.qyc.Javab.JavaBeanxx" />
<jsp:setProperty property="use" name="people" param="name" />
<jsp:setProperty property="password" name="people" param="password" />
<c:if test="${param.name=='qyc'}">
<jsp:getProperty property="use" name="people" />
<jsp:getProperty property="password" name="people" />
</c:if>
<c:choose>
<c:when test="${empty param.password }">
没输入密码！
</c:when>
<c:when test="${param.password=='123456'}">
密码：123456
</c:when>
<c:when test="${param.password=='456789'}">
密码：456789
<c:out value="密码：456789${param.name }"></c:out>
</c:when>
<c:when test="${param.password=='qycssg!'}">
</c:when>
<c:otherwise>
密码：
<c:out value="${param.password}" escapeXml="false" />
<c:redirect url="http://www.hxci.com.cn/"></c:redirect>
</c:otherwise>
</c:choose>
forEach
<%
ArrayList<String> cart = new ArrayList<String>();
String aString = "qyc";
cart.add(aString);
cart.add("asd");
cart.add("zxc");
%>
<c:forEach var="names" items="<%=cart %>">
${names}
</c:forEach>
