afnetworking设置请求头代码

 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@", WebURL]]];

    [request setCachePolicy:NSURLRequestReloadIgnoringCacheData];

    [request setTimeoutInterval: 30];

    NSString*msgLength = [NSString stringWithFormat:@"%d", [soapMsg length]];

    [request addValue: @"text/xml; charset=utf-8"forHTTPHeaderField:@"Content-Type"];

    [request addValue:@"IOS App (power by elliott)" forHTTPHeaderField:@"User-Agent"];

    [request addValue:soapActionURL forHTTPHeaderField:@"SOAPAction"];

    [request addValue: msgLength forHTTPHeaderField:@"Content-Length"];

    [request setHTTPMethod:@"POST"];

    [request setHTTPBody: [soapMsg dataUsingEncoding:NSUTF8StringEncoding]];

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];

    // Make sure to set the responseSerializer correctly

    //operation.responseSerializer = [AFXMLParserResponseSerializer serializer];

    //

    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

        NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)operation.response;

        if (httpResponse.statusCode == 200) {

            dispatch_async(dispatch_get_main_queue(), ^{

                NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithData:responseObject];

                

                //[xmlParser setShouldProcessNamespaces:NO];

                //[xmlParser setShouldReportNamespacePrefixes:NO];

                //[xmlParser setShouldResolveExternalEntities:NO];

                [xmlParser setDelegate:myhttp];

                [xmlParser parse];

                [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;

            });

        }

        

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        DLog(@"errror: %@", error);

        dispatch_async(dispatch_get_main_queue(), ^{

            if (_delegate && [_delegate respondsToSelector:@selector(updateVCwithNetError: method:)]) {

                [_delegate updateVCwithNetError:@"请求出错" method:myhttp.soapMethod];

            }

            [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;

        });

        

    }];