小弟我树小弟我树小弟我树树树（struts2 ext2.0）_J2EE

我树我树我树树树（struts2 ext2.0）
[code=Java][/code]这是ext2.0的代码、

JScript code

   1. <script type="text/javascript">     2. Ext.onReady(function(){     3.     var Tree = Ext.tree;     4.          5.         var tree = new Ext.tree.TreePanel({     6.         el:'tree-div',     7.         autoScroll : true,     8.             animate : true,     9.            enableDD : true,    10.             containerScroll : true,    11.            loader : new Tree.TreeLoader({    12.                 dataUrl : 'initialize.action'    13.             })    14.     });    15.         16.     var root = new Ext.tree.AsyncTreeNode({    17.         text:'ASK123',    18.         draggable : false,    19.         id:'0000'    20.     });    21.         22.     tree.setRootNode(root);    23.         24.         tree.render();    25.     26.             root.expand();    27. });    28. </script>

这个java代码

Java code

# public String execute() throws Exception {  #     // ...  #     list = moduleService.findBySjmkm(this.node);  #     if(list != null && list.size() > 0){  #         boolean isFirst = true;  #            int last = list.size();  #            int count = 0;  #            for (int i = 0; i < list.size(); i++) {  #             Module m = (Module) list.get(i);  #              if (count == 0) {  #                     this.setJsonString("[{\"text\" :\"" + m.getMc() + "\" ,\"id\" :\"" + m.getBh()  #                                   + "\" ,\"cls\" :\"folder\"} ");  #              } else if (i == (last - 1)) {  #                     this.setJsonString(this.getJsonString() + ",{\"text\" :\"" + m.getMc() + "\" ,\"id\" :\""  #                                   + m.getBh() + "\" ,\"cls\" :\"folder\"}]");  #              } else {  #                     this.setJsonString(this.getJsonString() + ",{\"text\" :\"" + m.getMc() + "\" ,\"id\" :\""  #                                   + m.getBh() + "\" ,\"cls\" :\"folder\"}");  #              }  #             count++;  #         }  #            System.out.println(this.getJsonString());  #     }  #     return SUCCESS;  # }

java代码里json我打出来是这个格式
[{"text" :"ALA管理" ,"id" :"5500" ,"cls" :"folder"} ,{"text" :"行销管理" ,"id" :"6100" ,"cls" :"folder"},{"text" :"财务管理" ,"id" :"7000" ,"cls" :"folder"},{"text" :"案件管理" ,"id" :"9000" ,"cls" :"folder"},{"text" :"系统" ,"id" :"1100" ,"cls" :"folder"},{"text" :"电子商务平台" ,"id" :"1300" ,"cls" :"folder"},{"text" :"会员管理" ,"id" :"3100" ,"cls" :"folder"},{"text" :"决策分析" ,"id" :"8010" ,"cls" :"folder"},{"text" :"协同办公平台" ,"id" :"8510" ,"cls" :"folder"},{"text" :"公开班管理" ,"id" :"1501" ,"cls" :"folder"},{"text" :"加盟商合作接口" ,"id" :"668471" ,"cls" :"folder"}]
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现在问题是前台树只出来一个根节点，得不到后台的数据，但是我吧数据源dataUrl : 'initialize.action'换成一个txt文本，文本里面写action得到的json却可以！到手帮小弟解决一下啊！!