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发表时间：2011-02-27
业务层方法 public String query() { List<Role> list = roledao.query(); List<Map<String,Object>> rolelist = new ArrayList<Map<String,Object>>(); for (Role role : list) { Map<String,Object> roles= new HashMap<String, Object>(); roles.put("id", String.valueOf(role.getRid())); roles.put("text", role.getName()); roles.put("cls", "folder"); List<Map<String,Object>> userlist =new ArrayList<Map<String,Object>>(); for (Users users : role.getUsers()) { Map<String,Object> user=new HashMap<String, Object>(); user.put("id", String.valueOf(users.getId())); user.put("text",users.getUsername()); user.put("leaf", true); //包含checked属性时, 生成的树中带有复选框 user.put("checked", false); userlist.add(user); } roles.put("children", userlist); rolelist.add(roles); } // Map<String,List<Map<String,Object>>> map= new HashMap<String, List<Map<String,Object>>>(); // map.put('root',rolelist ); return JSONArray.fromObject(rolelist).toString(); } 控制层方法 public class RoleAction implements Action {
private IRoleService rsi; private String json;//注入json public String getJson() { return json; } public void setJson(String json) { this.json = json; } public void setRsi(IRoleService rsi) { this.rsi = rsi; } public String execute() throws Exception { // TODO Auto-generated method stub return null; } public String query(){ json=rsi.query();//赋值 return SUCCESS; } } js文件读取json数据 Ext.onReady(function() { var tree = new Ext.tree.TreePanel( { renderTo : 'tree-div', title : '用户权限表', height : 768, width : 1024, useArrows : true, autoScroll : true, animate : true, enableDD : true, containerScroll : true, rootVisible : false, frame : true, root : { nodeType : 'async', setRootNode: 'root', id:'root' }, // auto create TreeLoader dataUrl : 'queryAll.action', listeners : { 'checkchange' : function(node, checked) { if (checked) { node.getUI().addClass('complete'); } else { node.getUI().removeClass('complete'); } } }, buttons : [ { text : 'Get Completed Tasks', handler : function() { var msg = '', selNodes = tree.getChecked(); Ext.each(selNodes, function(node) { if (msg.length > 0) { msg += ', '; } msg += node.text; }); Ext.Msg.show( { title : 'Completed Tasks', msg : msg.length > 0 ? msg : 'None', icon : Ext.Msg.INFO, minWidth : 200, buttons : Ext.Msg.OK }); } } ] }); tree.getRootNode().expand(true); }); jsp页面 <html> <head> <title>Checkbox TreePanel</title> <link rel="stylesheet" type="text/css" href="ext-3.2.1/resources/css/ext-all.css" /> <script type="text/javascript" src="ext-3.2.1/adapter/ext/ext-base.js"></script> <script type="text/javascript" src="ext-3.2.1/ext-all.js"></script> <script type="text/javascript" src="js/check-tree.js"></script> </head> <body> <div id="tree-div"></div> </body> </html>
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