ios 设置head请求头，自定义head

    AFHTTPSessionManager *manger = [AFHTTPSessionManager manager];

    manger.securityPolicy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeNone];

    manger.requestSerializer = [AFJSONRequestSerializer serializer];

    manger.responseSerializer = [AFJSONResponseSerializer serializer];

    [manger.requestSerializer setValue:@"123456" forHTTPHeaderField:@"uid"];

    [manger.requestSerializer setValue:@"78912345" forHTTPHeaderField:@"token"]

//同理

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];    

manager.securityPolicy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeNone];    

manager.requestSerializer = [AFJSONRequestSerializer serializer];    

manager.responseSerializer = [AFJSONResponseSerializer serializer];    

[manager.requestSerializer setValue:@"value" forHTTPHeaderField:@"name"];