Extjs 动态菜单
//左边放一个手风琴菜单var cascadeMenu = new Ext.Panel({region: 'west', resizable:true, title: '功能区', id:'westMenu', layout:'accordion', collapsible:true, collapseMode:'mini', collapseFirst:true, split:true, width:250, minSize: 175, maxSize: 500, layoutConfig: { titleCollapse: true, animate: false, activeOnTop: false }}); //手风琴菜单结束// 构建左边的菜单Ext.Ajax.request({url : 'MenuServlet?action=main',success : function(response, options) {var arr = Ext.decode(response.responseText);for (var i = 0; i < arr.length; i++) {var panel = new Ext.tree.TreePanel({id : arr.id,title : arr.text,iconCls : arr.iconCls,autoScroll : true,border : false,loader : new MenuLoader({dataUrl : 'MenuServlet?action=sub&id='+ arr.id}),root : new Ext.tree.AsyncTreeNode({expanded : true}),listeners:{'click':function(node){Ext.get('center_iframe').dom.src = node.attributes.hrefsrc;if(node.attributes.text!=null){}}},rootVisible : false});cascadeMenu.add(panel);panel.on('expand', function(p) {var expires = new Date();expires.setDate(expires.getDate() + 30);});}cascadeMenu.doLayout();}});后台servlet
if(StringUtils.equals(action, "main")){Document doc = XMLUtils.load(filePath);StringBuffer sb = new StringBuffer("[");if (doc != null) {Element root = doc.getRootElement();List els = root.elements();for (int i = 0; i < els.size(); i++) {Element el = (Element) els.get(i);Attribute id = el.attribute("id");Attribute text = el.attribute("text");Attribute iconCls = el.attribute("iconCls");sb.append("{id:'").append(id == null ? "" : id.getValue()).append("',");sb.append("text:'").append(text == null ? "" : text.getValue()).append("',");sb.append("iconCls:'").append(iconCls == null ? "" : iconCls.getValue()).append("'},");}if(els.size()>0){sb.deleteCharAt(sb.length()-1);}}sb.append("]");out.println(sb.toString());}else if(StringUtils.equals(action, "sub")){response.setContentType("text/xml");Document doc=XMLUtils.load(filePath);String id=request.getParameter("id");StringBuffer sb=new StringBuffer("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");List services = bean.findAllService();if(doc!=null){sb.append("<Menus>");Element el=doc.getRootElement();List nodes=el.selectNodes("/Menus/Items[@id='"+id+"']/*");for(int i=0;i<nodes.size();i++){Node node=(Node)nodes.get(i);sb.append(node.asXML());}sb.append("</Menus>");}out.println(sb.toString());}
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