调用store sync方法的时候,用fireBug每次JSON中都会多个id的属性,导致spring mvc转换错误,,,,
------解决方案--------------------
给store的reader增加 idProperty: 'menuId'，如果没配置ext会自动增加的
idProperty : String
The name of the field treated as this Model's unique id. ...
The name of the field treated as this Model's unique id. Defaults to 'id'.
Defaults to: "id"