Ext.data.Store的reader为啥读不出数据

Question

var store = Ext.create('Ext.data.Store', {
          baseParams:{catalogid:0},
          pageSize:countPerPage,
          fields: ["id","filecode","filename"],
          proxy: {
             type: 'ajax',
             url: '././FileListServlet'，
               reader:{
                 type:'json',
                 root:'items'
             }            },
                 });这样就好了，楼主可以试试