soap request by afnetworking2.X/3.X

for 2.X 参考 http://jiapumin.iteye.com/blog/2109378

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [[AFHTTPResponseSerializer alloc] init];
[manager.requestSerializer setValue:@"application/soap+xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[manager.requestSerializer setValue:soapLength forHTTPHeaderField:@"Content-Length"];
NSMutableURLRequest *request = [manager.requestSerializer requestWithMethod:@"POST" URLString:@"http://www.webxml.com.cn/WebServices/WeatherWebService.asmx" parameters:nil];
[request setHTTPBody:[soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
AFHTTPRequestOperation *operation = [manager HTTPRequestOperationWithRequest:request success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSString *response = [[NSString alloc] initWithData:(NSData *)responseObject encoding:NSUTF8StringEncoding];
    NSLog(@"%@, %@", operation, response);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSString *response = [[NSString alloc] initWithData:(NSData *)[operation responseObject] encoding:NSUTF8StringEncoding];
    NSLog(@"%@, %@", operation, error);
}];
[manager.operationQueue addOperation:operation];
}

for 3.X (未验证)

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    NSMutableURLRequest *request = [manager.requestSerializer requestWithMethod:@"post" URLString:@"" parameters:nil error:nil];
    [request setHTTPBody:nil];
    NSURLSessionTask *task = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {
        
    }];
    [task resume];