Question

我成功连接到iOS的.NET Web服务，并通过NSLog将响应xml文档打印到控制台。这是我通过AFNetworking Library做的。我现在能够通过NSURLConnection连接到同一个Web服务，但是，我无法提取我的NSMutableData对象中保存的xml文档。 AFNetworking库能够自动执行此操作，这使事情变得更加容易，但我想知道如何使用本机iOS库执行此操作。这是我正在使用的代码：

//This is the code I am using to make the connection to the web service
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

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

    [request setHTTPMethod:@"POST"];

    [request addValue:@"http://tempuri.org/Customers" forHTTPHeaderField:@"SOAPAction"];
    [request addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];

    // Convert your data and set your request's HTTPBody property
    NSString *stringData = @"some data";
    NSData *requestBodyData = [stringData dataUsingEncoding:NSUTF8StringEncoding];
    request.HTTPBody = requestBodyData;

    // Create url connection and fire request
    NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    [conn start];

以下是我必须从Web服务接收数据的代码：

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {

    _responseData = [[NSMutableData alloc] init];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {

    [_responseData appendData:data];
}

- (NSCachedURLResponse *)connection:(NSURLConnection *)connection
                  willCacheResponse:(NSCachedURLResponse*)cachedResponse {
    return nil;
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    // The request is complete and data has been received
    NSString *strData = [[NSString alloc]initWithData:_responseData encoding:NSUTF8StringEncoding];

    NSLog(@"%@", strData);

}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    // The request has failed for some reason!

}


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

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

        NSLog(@"%@", [operation responseString]);

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

        NSLog(@"failed");

    }];

    [operation start];
    */

我只想打印出我收到的整个xml文档，而不一定要解析整个文档。

感谢所有回复的人。

Answer 1

查看服务器上的帮助文档，它提出了一个示例请求：

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <Customers xmlns="http://tempuri.org/" />
  </soap:Body>
</soap:Envelope>

因此，我将该示例请求放在文本文件中，并通过NSURLConnection启动请求，如下所示：

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

NSString *filename = [[NSBundle mainBundle] pathForResource:@"soap1-1example" ofType:@"xml"];
NSData *requestBodyData = [NSData dataWithContentsOfFile:filename];
request.HTTPBody = requestBodyData;

[request setHTTPMethod:@"POST"];

[request addValue:@"http://tempuri.org/Customers" forHTTPHeaderField:@"SOAPAction"];
[request addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];

[NSURLConnection connectionWithRequest:request delegate:self];

注意，我不是在调用start，因为as the documentation says除非您使用“initWithRequest:delegate:startImmediately:方法并为NO参数提供startImmediately”将自动为您启动。您的原始代码实际上是两次启动连接，这可能会有问题。

无论如何，使用我修改后的代码和上述请求，它使用NSURLConnection和AFNetworking都可以正常工作。我得到的反应（美化）是：

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
    <CustomersResponse xmlns="http://tempuri.org/">
    <CustomersResult>
        <Customer>
            <FirstName>Mohammad</FirstName>
            <LastName>Azam</LastName>
        </Customer>
        <Customer>
            <FirstName>John</FirstName>
            <LastName>Doe</LastName>
        </Customer>
    </CustomersResult>
</CustomersResponse>
</soap:Body>
</soap:Envelope>

如果它仍然不适合您，也许您可以分享您提交的请求的详细信息。

顺便说一句，因为这里没有任何东西需要委托方法（例如你没有流式传输，你没有进行任何身份验证等），你可以消除所有NSURLConnectionDataDelegate方法（{{ 1}}，didReceiveResponse等），只需使用didReceiveData类方法，sendAsynchronousRequest（在iOS 5及更高版本中）：

NSURLConnection

需要从iOS中的NSMutableData对象中提取XML文档

1 个答案: