Xcode报错: Call can throw, but it is not marked with 'try' and the error is not handled
执行代码letuser=["uname":"张三","tel":["mobile":"138","home":"010"]]letdata:NSData!=NSJSONSerialization.dataWithJSONObject(user,options:nil,error:nil)letjson:AnyObject!=NSJSONSerialization.JSONObjectWithDat