setprop.tag

ajax基础操作实例,无刷添加删除等..

<%@ attribute name="name" required="true" rtexprvalue="true" %>
<%@ attribute name="array" required="false" rtexprvalue="true"
    type="java.lang.Boolean" %>
<%@ attribute name="bool" required="false" rtexprvalue="true"
    type="java.lang.Boolean" %>
<%@ tag body-content="empty" %>

<%@ 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="propValue" value="${null}"/>
<c:if test="${formPost && empty formErrors[name]}">
    <c:if test="${!array && !bool && !empty param[name]}">
        <c:set var="propValue" value="${param[name]}"/>
    </c:if>
    <c:if test="${!array && bool}">
        <c:set var="propValue" value="${!empty param[name]}"/>
    </c:if>
    <c:if test="${array && fn:length(paramValues[name]) > 0}">
        <c:set var="propValue" value="${paramValues[name]}"/>
    </c:if>
</c:if>

<c:if test="${propValue != null}">
    <c:catch var="exception">
        <c:set target="${formModel}" property="${name}" value="${propValue}"/>
    </c:catch>
    <c:if test="${exception != null}">
        <dfu:addError name="${name}" msg="${exception.message}"
            exception="${exception}"/>
    </c:if>
</c:if>