问题 This is my store MyStore.js Ext.define('myProject.store.MyStore', { config:{ storeId: 'MyStore', autoLoad: false, autoSync: false, allowSingle: true, clearOnPageLoad: true, model: 'abc.model.MyStoreModel', proxy: { type: 'rest', actionMethods: {create: 'POST', read: 'GET', update: 'POST', destroy: 'POST'}, url:'/services/rest/MyService/myService', reader: { type: 'json', rootProperty:MyServiceView.elements.collection', successProperty : 'success' }, writer: { type: 'json', root: