列表数据的获取代码清单：
//数据列表renderListData: function(){//定义变量和函数的作用范围var _scope = this;var st = new Ext.data.Store({model: _scope.model, //store组件使用的Ext.data.Model//sorters: 'crtdt',autoLoad: true, //是否自动加载数据proxy: {type: 'ajax',actionMethods: 'POST',url: _scope.url, //数据获取的url地址extraParams: _scope.extraParams, //请求的额外参数startParam: 'start',limitParam: 'limit',reader: {type: 'json', //reader类型-默认jsonReader,root: undefined, //reader root-默认undefined}},listeners: {beforeload: function(st, oper){oper.start = _scope.start; //设置分页起始记录oper.limit = _scope.limit; //设置每页显示记录数},load: function(st, records, successful){ if(successful){//获取后台返回的记录总数属性_scope.totalNum = st.getProxy().getReader().rawData.total;//分页按钮控制_scope.controlPageButtons();//回调外部函数-返回结果给外部函数if(_scope.callbackFn){_scope.callbackFn({listId:_scope.listId, total:_scope.totalNum});}} }}});//创建并返回list组件return new Ext.List({id: _scope.listId,//multiSelect: true,//simpleSelect: true,scroll: 'vertical',store: st, //store组件对象emptyText: '<div style="margin:2px;">'+_scope.emptyText+'</div>',loadingText: '正在获取数据',itemTpl: _scope.itemTpl, //列表显示的模板listeners: {itemtap: function(lt, idx, item, e){//点击列表记录时执行的函数if(_scope.itemTapFn){var record = lt.getStore().getAt(idx);_scope.itemTapFn({listId:_scope.listId, record:record}, _scope.fnScope);}}}});}
通过Ext.request方式获取数据的代码清单：
//获取数据fetchData: function(){var _scope = this;Ext.Ajax.request({method: 'POST',url: prefix + '/doc/letter/manager!fetchEditData.action',params: {'entity.id': _scope.entityId //传递给后台的参数},success: function(response, opts){var objResp = Ext.decode(response.responseText);if(objResp.success){var objData = Ext.decode(objResp.result);//调用自定义的函数把数据设置到form中_scope.loadDataToForm(_scope, objData);}else{Ext.Msg.alert(objResp.result);}},failure: function(response, opts){Ext.Msg.alert('很抱歉，由于网络原因获取数据出错！');}});}
)
