Ext同步加载树！
1、Action后台java代码/** * 显示树形【left左边的导航】 * @param mapping * @param form * @param request * @param response * @return * @throws IOException*/public ActionForward showTreeNode(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) throws IOException {List<Menu> menulist = new ArrayList<Menu>();//Menu zonemenu = null;//区域List<ZoneInfo> zoneList = zoneInfoService.getZoneInfoList();for (ZoneInfo zone : zoneList) {Menu zonemenu = new Menu();zonemenu.setId("zone"+zone.getZoneId());zonemenu.setText(zone.getZoneName());List<MerchantInfo> merchanglist = merchantInfoService.getMerchantInfoByZoneID(zone.getZoneId());//根据区域ID显示商户if(merchanglist.size()>0){zonemenu.setLeaf(false);List<Menu> merchantlistmenu = new ArrayList<Menu>();zonemenu.setChildren(merchantlistmenu);//区域添加商户for (MerchantInfo merchant : merchanglist) {Menu merchantmenu = new Menu();merchantmenu.setId("merchant"+merchant.getId());merchantmenu.setText(merchant.getMerchantForShort());List<StoreInfo> storeinfo = merchantInfoService.getStoreInfoByMerchantID(merchant.getId());//根据商户id得到门店if(storeinfo.size()>0){merchantmenu.setLeaf(false);List<Menu> storelistmenu = new ArrayList<Menu>();merchantmenu.setChildren(storelistmenu);//商户添加门店for (StoreInfo store : storeinfo) {Menu storemenu = new Menu();storemenu.setId("store"+store.getId());storemenu.setText(store.getStoreForShort());List<StationInfo> stationlist = stationInfoService.getStationInfoByStoreID(store.getId());//根据门店ID得到站点if(stationlist.size()>0){storemenu.setLeaf(false);List<Menu> stationlistmenu = new ArrayList<Menu>();storemenu.setChildren(stationlistmenu);//门店添加站点for (StationInfo station : stationlist) {Menu stationmenu = new Menu();stationmenu.setId("station"+station.getId());stationmenu.setText(station.getStationCode());stationmenu.setLeaf(true);stationlistmenu.add(stationmenu);}}else{storemenu.setLeaf(true);}storelistmenu.add(storemenu);}}else{merchantmenu.setLeaf(true);}merchantlistmenu.add(merchantmenu);}}else{zonemenu.setLeaf(true);}menulist.add(zonemenu);}JSONArray json = JSONArray.fromObject(menulist);response.getWriter().print(json.toString());return null;}
2、Menu.class类
package com.ntouch.general;import java.util.List;public class Menu {private String id;private String text;private boolean leaf;//private String cls;private List<Menu> children;public String getId() {return id;}public void setId(String id) {this.id = id;}public String getText() {return text;}public void setText(String text) {this.text = text;}public boolean isLeaf() {return leaf;}public void setLeaf(boolean leaf) {this.leaf = leaf;}public List<Menu> getChildren() {return children;}public void setChildren(List<Menu> children) {this.children = children;}}
3、index.jsp中的部分Ext脚本代码
/*树加载*/var root = new Ext.tree.AsyncTreeNode({id:'0',text:'区域',leaf:false});var data=new Ext.tree.TreeLoader({url:'zone.do?op=showTreeNode'});var tree = new Ext.tree.TreePanel({root:root,title:'结构组织',region:'west',split:true,//可调collapsible:true,//隐藏显示loader:data,useArrows:true,autoScroll:true,width:180,minSize:160,maxSize:300,animate:true,//开启动画效果enableDD:false,//不允许子节点拖动border:false,//有边框lines:true,rootVisible:true//设为false，将隐藏root根节点});data.on('beforeload',function(treeLoader,node){ this.baseParams.id=node.attributes.id; },data); root.expand(true,true);
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