AF上传Json《笔记篇》

参照：http://www.tuicool.com/articles/bUZv2y

目前这样写的：

NSString*JSONString = [[NSStringalloc]initWithData:[NSJSONSerializationdataWithJSONObject:_GuiGeCanShuMutAryoptions:NSJSONWritingPrettyPrintederror:nil]encoding:NSUTF8StringEncoding];