从 Objective c 到 asmx Web 服务的参数为空白

Question

我正在从我的 xcode 调试器调用 .Net asmx Web 服务。在调试器中，我可以看到我正在传递一些值，但在 .net Web 服务上它是空白的。

在网络服务端，我正在写入日志文件。我看到该方法正在被调用，但参数为空/空。我已经粘贴了下面的代码。我也粘贴了wsdl。参数作为空白

-(void) fetchData: (NSString*)userid 
{
    NSString *requestSoapMsg = 
    [NSString stringWithFormat:
     @"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
     "<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/\">\n"
     "<soap:Body>\n"
     "<UpdateRegForUser xmlns=\"http://soft.com\">\n"
     "<userid>%@</userid>\n"    
     "</UpdateRegForUser>\n"
     "</soap:Body>\n"
     "</soap:Envelope>\n", userid];

    NSLog(@"%@", requestSoapMsg); // i can see the value here

    NSURL *url = [NSURL URLWithString:@"http://soft.com:8000/services/registration.asmx"];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

    NSString *requestSoapMsgLength = [NSString stringWithFormat:@"%d", [requestSoapMsg length]];
    [request addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    [request addValue:@"http://soft.com/UpdateRegForUser" forHTTPHeaderField:@"SOAPAction"];
    [request addValue:requestSoapMsgLength forHTTPHeaderField:@"Content-Length"];

    [request setHTTPMethod:@"POST"];
    [request setHTTPBody:[requestSoapMsg dataUsingEncoding:NSUTF8StringEncoding]];

    NSError *error;
    NSURLResponse *response;

    NSData *result = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

    if(!result)
        NSLog(@"FAILEDDDDDDDDD!!");

WSDL 出现的任何原因 -

POST /services/registration.asmx HTTP/1.1

Host: soft.com


Content-Type: text/xml; charset=utf-8

Content-Length: length

SOAPAction: "http://soft.com/UpdateRegForUser"

<?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>
    <UpdateRegForUser xmlns="http://soft.com/">
      <userid>string</userid>
    </UpdateRegForUser>
  </soap:Body>
</soap:Envelope>

Answer 1

我想到了问题所在。

我编写了一个 C# 控制台应用程序并调用了 Web 服务。同时，我捕获了 fiddler 的痕迹。 fiddler 跟踪显示 xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" 应该出现在 xsi 之前。我保存了 xml 并使我的请求 xml 完全相同。它开始工作了。