form.tag

ajax基础操作实例,无刷添加删除等..

<%@ attribute name="name" required="true" rtexprvalue="true" %>
<%@ attribute name="action" required="false" rtexprvalue="true" %>
<%@ attribute name="method" required="false" rtexprvalue="true" %>
<%@ attribute name="model" required="true" rtexprvalue="true"
    type="java.lang.Object"%>
<%@ tag dynamic-attributes="dynAttr" body-content="scriptless" %>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@ taglib prefix="dfu" tagdir="/WEB-INF/tags/dynamic/forms/util" %>

<c:set var="formName" scope="request" value="${name}"/>
<c:set var="formModel" scope="request" value="${model}"/>
<c:if test="${!empty action}">
    <c:set var="formAction" scope="request" value="${action}"/>
</c:if>
<c:set var="formPost" scope="request"
    value="${fn:toUpperCase(pageContext.request.method) == 'POST'}"/>
<jsp:useBean id="formErrors" scope="request" class="java.util.HashMap"/>

<form name="${name}" method="POST" <dfu:attrList tag="form" map="${dynAttr}"/>>
    <jsp:doBody/>
</form>

<c:if test="${formPost && empty formErrors && !empty formAction}">
    <c:set var="forwardURL" value="${formAction}"/>
</c:if>

<c:remove var="formName" scope="request"/>
<c:remove var="formModel" scope="request"/>
<c:remove var="formAction" scope="request"/>
<c:remove var="formPost" scope="request"/>
<c:remove var="formErrors" scope="request"/>

<c:if test="${!empty forwardURL}">
    <jsp:forward page="${forwardURL}"/>
</c:if>