这个模型挺常见的:
class:Catalog
property:String className
property:Catalog parentCatalog
property:Set children查出顶层Catalog(parentID=0),放入List catalogs中:
<c:forEach var="catalog" items="${catalogs}" >
${catalog.classname}<br />
<c:forEach var="cl" items="${catalog.children}" >
${cl.classname},
</c:forEach>
</c:forEach>
class:Catalog
property:String className
property:Catalog parentCatalog
property:Set children查出顶层Catalog(parentID=0),放入List catalogs中:
<c:forEach var="catalog" items="${catalogs}" >
${catalog.classname}<br />
<c:forEach var="cl" items="${catalog.children}" >
${cl.classname},
</c:forEach>
</c:forEach>
解决方案 »
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