jstl变量实现自增

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jstl变量实现自增
Java代码

<c:forEach items="${reallyChooseSubjectList}" var="reallyChooseSubject">



        <tr>

            <td width="20px;">(<%=i %>) </td><td>${reallyChooseSubject.name}</td>

            <td>

                <input type="hidden" name="subjectId<%=i %>" id="subjectId<%=i %>" value="${reallyChooseSubject.id }">



            </td>

        </tr>

        <tr>

            <td width="20px;"><td><input type="radio" name="answer<%=i %>" value="A" />A.${reallyChooseSubject.answer_A}</td><td></td>

        </tr>

        <tr>

            <td width="20px;"><td><input type="radio" name="answer<%=i %>" value="B" />B.${reallyChooseSubject.answer_B}</td><td></td>

        </tr>

        <tr>

            <td width="20px;"><td>

                <c:if test="${reallyChooseSubject.answer_C != ''}" scope="page">

                    <input type="radio" name="answer<%=i %>"  value="C" />C.${reallyChooseSubject.answer_C}

                </c:if>

            </td><td></td>

        </tr>

        <tr>

            <td width="20px;"><td>

                <c:if test="${reallyChooseSubject.answer_D != ''}" scope="page">

                    <input type="radio" name="answer<%=i %>"  value="D" />D.${reallyChooseSubject.answer_D}

                </c:if>

            </td><td></td>

        </tr>

        <tr><%i++; %></tr>

        </c:forEach>
在循环中变量自增:
Java代码

<%@ page contentType="text/html;charset=gbk" %>

<%@taglib uri="http://java.sun.com/jstl/core_rt" prefix="c" %>

<html>

<head>

<title>x</title>

<meta http-equiv="Content-Type" content="text/html;charset=gbk">



</head>

<body>

<c:set var="index" value="0" />

<c:forEach var="x" begin="1" end="9" step="1">

<c:set var="index" value="${index+1}" />

index:${index}

x:${x }

<br>



</c:forEach>

<br>



</body>

</html>
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原文地址：https://www.cnblogs.com/htys/p/3842915.html