问一个关于jsp的超难度问题

Question

我靠这么复杂，将你的树的tag看看，先！！

Answer 1

我想难点是怎么用jsp技术实现类似java code中方法的递归调用
public method {
   ....
   method()；
}
这里的method在jsp中相当与显示一个节点的页面片断。

Answer 2

可以考虑做成一个java bean来处理啊!

Answer 3

奇怪了 
你写个类里面实现递归,然后返回字符串
然后在jsp中调用显示不就完了么,咋 这么费劲

Answer 4

可以用import来实现你要达到的效果,例如： <c:choose>
    <c:when test="${empty param.recursion}">
      <table>
         <c:forEach var="catalog" items="${catalogList}">
            <c:set var="catalog" scope="request" value="${catalog}"/>
            <c:set var="depth" scope="request" value="0"/>
            <c:import url="/WEB-INF/pages/pickCatalog.jsp?recursion=true"/>
         </c:forEach>
      </table>
    </c:when>
    <c:otherwise>
         <c:choose>
              <c:when test="${catalog.leafCatalog}">
                    <c:if test="${status.index%5==0}">
                    <tr>
                    </c:if>
                      <td>
                        <c:if test="${status.index%5==0}">
                            <c:forEach begin="0" end="${depth}" step="1">
                               &nbsp;
                            </c:forEach>
                        </c:if>
                            <html-el:multibox name="${param.form}" property="${param.property}" styleId="${catalog.id}">
                                <c:out value="${catalog.id}"/>
                            </html-el:multibox>
                            <c:out value="${catalog.name}"/>
                      </td>
                    <c:if test="${status.index%5==5-1||status.last}">
                    </tr>
                    </c:if>
              </c:when>
              <c:otherwise>
                    <tr>
                      <td>
                        <c:forEach begin="0" end="${depth}" step="1">
                           &nbsp;
                         </c:forEach>
                        <b><c:out value="${catalog.name}"/></b>
                      </td>
                    </tr>
              </c:otherwise>
        </c:choose>        <c:forEach var="child" items="${catalog.children}" varStatus="status">
            <c:set var="catalog" scope="request" value="${child}"/>
            <c:set var="depth" scope="request" value="${depth+1}"/>
            <c:set var="status" scope="request" value="${status}"/>
            <c:import url="/WEB-INF/pages/pickCatalog.jsp"/>
            <c:set var="depth" scope="request" value="${depth-1}"/>
        </c:forEach>
    </c:otherwise>
</c:choose>