Domain=AFNetworkingErrorDomain Code=-1016 "Expected content type

http://stackoverflow.com/questions/12447725/afnetworking-and-post-request

产生该错误的原因是AFNetworking默认不接收该类型，根据错误信息里面的提示，添加代码

[AFJSONRequestOperation addAcceptableContentTypes:[NSSet setWithObject:@"text/html"]];

text/html根据自己的错误写