我想打印递减数字,如:
<c:forEach var="i" begin="10" end="0" step="-1">
... ${i} ...
</c:forEach>
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然后我得到了jsp异常:
javax.servlet.jsp.JspTagException: 'step' <= 0
javax.servlet.jsp.jstl.core.LoopTagSupport.validateStep(LoopTagSupport.java:459)
org.apache.taglibs.standard.tag.rt.core.ForEachTag.setStep(ForEachTag.java:60)
....
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但是这个答案说可以以两种方式循环:
我怎么了?