JSTL forEach separator

问题

Is there a built in feature in JSTL to output separators while doing foreach?

The task is to output separators (like commas) after each iteration except the last one (or before each except the first). Is there any ELSE tag for foreach?

回答1:

Use the varStatus attribute, which references an object of type LoopTagStatus:

<c:forEach var="foo" items="${foos}" varStatus="loopStatus">
    <c:out value="${foo}"/>
    <c:if test="${!loopStatus.last}"> | </c:if>
</c:forEach>

回答2:

<c:forEach items="${myList}" var="item" varStatus="status">
    ${item}<c:if test="${not status.last}">,</c:if>
</c:forEach>

回答3:

You may use `varStatus' attribute in EL,

<c:forEach var="foo" items="${foos}" varStatus="loopStatus">${foo}${!loopStatus.last?',':''}</c:forEach>` 

来源：https://stackoverflow.com/questions/8882528/jstl-foreach-separator