JsonStore 和Store实现后台取数据
JsonStore 和Store实现后台取数据

/*    var store = new Ext.data.JsonStore({  //  totalProperty: "totalProperty", //  root: "root",                url : "http://127.0.0.1:8080/extTest/getFileName",                  fields : ["length", "path", "rptName","size"]              });  */

等效于

//Proxy var proxy = new Ext.data.HttpProxy({url: "http://127.0.0.1:8080/extTest/getFileName"});  //Record 定义记录结果 var Report = Ext.data.Record.create([   {name: "path", type: "string", mapping: "path"},   {name: "length", type: "string", mapping: "length"},   {name: "rptName", type: "string", mapping: "rptName"},   {name: "size", type: "string", mapping: "size"} ]);  //Reader var reader = new Ext.data.JsonReader({//  totalProperty: "totalProperty", //  root: "root",  },  Report );  //Store var store = new Ext.data.Store({   proxy: proxy,   reader: reader }); 

注意：下面两句对应的数据是
// totalProperty: "totalProperty",
// root: "root",

[totalProperty:110,root:[{name:'唐伯虎',age:25,sex:'男'},{name:'楚留香',age:24,sex:'女'}]]

如果数据是
String _str = "[{name:'唐伯虎',age:25,sex:'男'},{name:'楚留香',age:24,sex:'女'}]"; 加上了 上面两条语句打死也不会得到数据%>_<%

一个很完美的例子 http://pepa.iteye.com/blog/249232