AFN  报错。

进行网络请求，
我用 AFHTTPSessionManager.

2016-12-12 11:48:09.328 TheStep[3479:759820] -[__NSDictionaryI bytes]: unrecognized selector sent to instance 0x600000260080
2016-12-12 11:48:09.335 TheStep[3479:759820] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryI bytes]: unrecognized selector sent to instance 0x600000260080'
*** First throw call stack:
(
    0   CoreFoundation                      0x000000010d51934b __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x000000010cf7a21e objc_exception_throw + 48
    2   CoreFoundation                      0x000000010d588f34 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
    3   CoreFoundation                      0x000000010d49ec15 ___forwarding___ + 1013
    4   CoreFoundation                      0x000000010d49e798 _CF_forwarding_prep_0 + 120
    5   Foundation                          0x000000010a7fa889 -[_NSJSONReader findEncodingFromData:withBOMSkipLength:] + 46
    6   Foundation                          0x000000010a7fa76f -[_NSJSONReader parseData:options:] + 58
    7   Foundation                          0x000000010a7fa6a6 +[NSJSONSerialization JSONObjectWithData:options:error:] + 139

这样就好了

AFHTTPSessionManager * manager=[self getSessionmacager:[NSString stringWithFormat:@"POST%@%@",BaseVersion,strURL]];

这样就报错

AFHTTPSessionManager * manager = [AFHTTPSessionManager manager ];
    manager.securityPolicy.allowInvalidCertificates = YES;