如何在JSP中显示树形结构的数据

项目中需要显示部门信息，请问在JSP页面中如何显示呢？JSP

解决方案 »

免费领取超大流量手机卡，每月29元包185G流量+100分钟通话, 中国电信官方发货

服务器端获取数据后由js去构建树形结构，网上很多js实现的树可以用。
也就是tree的问题咯动态的，你看怎么样？
Struts2动态树型从数据库取出
后台数据层代码:public TEquipmentTree[] getChildren(String treeNodeId) throws Exception {
  Connection conn = getConnection();
  PreparedStatement smt = conn.prepareStatement("select * from t_equipmentclass where eql_pcode ='"+treeNodeId+"'");

  ResultSet rs = smt.executeQuery();
  List<TEquipmentTree> childList = new ArrayList<TEquipmentTree>();
  while (rs.next()) {
   TEquipmentTree TEquipmentTree = new TEquipmentTree();
   TEquipmentTree.setEqlCode(rs.getString("eql_code"));
   TEquipmentTree.setEqlName(rs.getString("eql_name"));
   TEquipmentTree.setEqlPcode(rs.getString("eql_pcode"));
   TEquipmentTree.setEqlLevel(rs.getInt("eql_level"));
   TEquipmentTree.setEqlRe(rs.getString("eql_re"));
   TEquipmentTree.setChildEquipment(getChildren(TEquipmentTree.getEqlCode()));
   childList.add(TEquipmentTree);
  }
  rs.close();
  smt.close();
  conn.close();
  TEquipmentTree[] childResult = new TEquipmentTree[childList.size()];
  childResult = childList.toArray(childResult);
  return childResult;
}public TEquipmentTree[] getAllTEquipmentTree() throws Exception {
  String sql="select * from T_Equipmentclass where EQL_PCODE='EEW1001'";
  Connection conn = getConnection();
  PreparedStatement smt = conn.prepareStatement(sql);
  ResultSet rs = smt.executeQuery();
  List<TEquipmentTree> TEquipmentTreeList = new ArrayList<TEquipmentTree>();
  while (rs.next()) {
   TEquipmentTree TEquipmentTree = new TEquipmentTree();
   TEquipmentTree.setEqlCode(rs.getString("EQL_CODE"));
   TEquipmentTree.setEqlName(rs.getString("EQL_NAME"));
   TEquipmentTree.setEqlPcode(rs.getString("EQL_PCODE"));
   TEquipmentTree.setEqlLevel(rs.getInt("EQL_LEVEL"));
   TEquipmentTree.setEqlRe(rs.getString("EQL_REMARK"));
   TEquipmentTree.setChildEquipment(getChildren(TEquipmentTree.getEqlCode()));
   TEquipmentTreeList.add(TEquipmentTree);  }
  rs.close();
  smt.close();
  conn.close();
  TEquipmentTree[] TEquipmentTree = new TEquipmentTree[TEquipmentTreeList.size()];
  TEquipmentTree = TEquipmentTreeList.toArray(TEquipmentTree);
  return TEquipmentTree;
}前台页面:<s:head theme="ajax"/>
<script type="text/javascript">
function treeNodeSelected(arg) {
window.returnValue=arg.source.title+","+arg.source.widgetId;
window.close();
//arg.source.widgetId+","
//window.opener.document.getElementById("eqlCode").value=arg.source.widgetId;
//alert(arg.source.title);
//window.opener.document.getElementByName("eqlName").value=arg.source.title;
//alert("id["+arg.source.widgetId+"], name["+ arg.source.title+ "] selected");
   }
   dojo.addOnLoad(function() {
      var s = dojo.widget.byId('tree').selector;
      dojo.event.connect(s, 'select', 'treeNodeSelected');
   });
</script>
</head>
<body>
<s:form>
<s:tree id="tree"
rootNode="root"
nodeIdProperty="eqlCode"
nodeTitleProperty="eqlName"
childCollectionProperty="childEquipment"
treeSelectedTopic="treeSelected"
theme="ajax"
showRootGrid="false">
</s:tree>
</s:form>
在后台写tree结构，或者用ztree、dtree都可以。不建议用js写