this.bbar = [{         	 xtype: ‘pagingtoolbar‘,         	 //增加id         	 id : ‘ptb‘,             pageSize: 2,             store: this.store,             displayInfo: true,             plugins: new Ext.ux.ProgressBarPager()         }];

 1 Ext.define(‘Industry_Demo.store.Industry‘, { 2      extend: ‘Ext.data.Store‘, 3      /* 4      fields: [{name: ‘PK_Industry_ID‘,type: ‘int‘}, 5              {name: ‘Industry_Name‘,type : ‘string‘} 6              ], 7              */ 8      model : ‘Industry_Demo.model.Industry‘, 9      pageSize : 2,10      //非常重要的属性11      //autoLoad: {start : 0, limit : 2},12      proxy: {13           type : ‘ajax‘,14           enablePaging: true,15          // url : ‘data/industries.json‘,16           url : ‘/IndustryAdmin/getIndustries.do‘,17           reader: {18              type : ‘json‘,19              root : ‘industries‘,20              successProperty: ‘success‘,21              totalProperty : ‘total‘22             23         }24      }25      /*26      data  : [27                  {PK_Industry_ID:1,Industry_Name:‘aa‘},28                  {PK_Industry_ID:2,Industry_Name:‘bb‘}29              ]30          */    31  });

Ext.define(‘Industry_Demo.controller.Industry‘,{     //必须和文件同名      extend : ‘Ext.app.Controller‘,      init : function() {          // console.log("Hello");           this.control({                               ‘industryList‘ : {                    itemdblclick: this.editRecord,                    render : function(myView){                        myView.getStore().load({params:{start:0,limit:2}});                    }                },

@RequestMapping(value="http://www.mamicode.com/getIndustries",method=RequestMethod.GET)    public void getIndustries(HttpServletRequest request,HttpServletResponse response){        String startString = request.getParameter("start");        String limitString = request.getParameter("limit");        int start = Integer.valueOf(startString);        int limit = Integer.valueOf(limitString);        System.out.println("select controller层");        System.out.println(start+" "+limit);        int num = industryService.getIndustriesNum();        System.out.println(num+" ");        List<Industry> list = null;        list =  industryService.getIndustries(start, limit);        System.out.println("mission completed I am back");            String jsonString = "{success : true,total : ";        jsonString +=num;        jsonString +=",industries : [";        int i = 0;        if(list.size()>0){        for(;i <list.size()-1;i++){            jsonString += "{id : "+ list.get(i).getId() + ",name : ‘"+list.get(i).getName()+"‘},";        }        jsonString +="{id :" + list.get(i).getId()+",name : ‘"+list.get(i).getName()+"‘}]}";        }        else{            jsonString = "{success : true,total : ";            jsonString +=num;            //jsonString +=",industries ";            //jsonString +="{}]}";             jsonString += "}";        }        try {            response.getWriter().write(jsonString);        } catch (IOException e) {            // TODO Auto-generated catch block            System.out.println("Something not good happen");            e.printStackTrace();        }            }