基于jstree使用AJAX请求获取数据形成树

//权限分配 
  $('#authority').click(function() { 
    $("#jstree").jstree({ 
     "core" : { 
      "themes" : { 
       "responsive": false 
      }, 
      // so that create works 
      "check_callback" : true, 
      'data' : function (obj, callback) { 
       var jsonstr="[]"; 
       var jsonarray = eval('('+jsonstr+')'); 
       $.ajax({ 
        type: "GET", 
        url:"/demo/authority/getAuthoritys", 
        dataType:"json", 
        async: false, 
        success:function(result) { 
         var arrays= result; 
         for(var i=0 ; i<arrays.length; i++){ 
          console.log(arrays[i]) 
          var arr = { 
            "id":arrays[i].id, 
            "parent":arrays[i].parentId=="root"?"#":arrays[i].parentId, 
            "text":arrays[i].name 
          } 
          jsonarray.push(arr); 
         } 
        } 
 
       }); 
       callback.call(this, jsonarray); 
      } 
     }, 
     "types" : { 
      "default" : { 
       "icon" : "glyphicon glyphicon-flash" 
      }, 
      "file" : { 
        "icon" : "glyphicon glyphicon-ok" 
      } 
     }, 
     "state" : { "key" : "demo2" }, 
     "plugins" : [ "dnd", "state", "types","checkbox","wholerow" ] 
    }); 
    $('#setAuthority').modal(); 
  }); 

<!-- 权限分配模框--> 
 <div class="modal fade" id="setAuthority"> 
  <div class="modal-dialog"> 
   <div class="modal-content message_align"> 
    <div class="modal-header"> 
     <button type="button" class="close" data-dismiss="modal" 
      aria-label="Close"> 
      <span aria-hidden="true">×</span> 
     </button> 
     <h5 class="modal-title">权限分配</h5> 
    </div> 
    <div class="modal-body"> 
     <div id= "jstree"> 
      
     </div> 
    </div> 
    <div class="modal-footer"> 
     <input type="hidden" id="url" /> 
     <button type="button" class="btn btn-default" data-dismiss="modal">取消</button> 
     <a onclick="authorityConfirm()" class="btn btn-success" 
      data-dismiss="modal">确定</a> 
    </div> 
   </div> 
   <!-- /.modal-content --> 
  </div> 
  <!-- /.modal-dialog --> 
 </div>