我想向 Web 服务方法发送 SOAP 请求。现在我想将参数作为该请求的 XML 输入发送。我怎样才能在 iPhone 中做到这一点？现在我正在通过以下方式发送请求：
NSString *soapMessage =
@"<?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"
"<GetCustomerInfoXML xmlns=\"http://qa2.alliancetek.com/phpwebservice\">\n"
"<id><customer><id>1</id></customer></id>"
"</GetCustomerInfoXML>"
"</soap:Body>\n"
"</soap:Envelope>";
NSLog(@"%@",soapMessage);
NSURL *url = [NSURL URLWithString:@"http://qa2.alliancetek.com/phpwebservice/index.php"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];
[theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[theRequest addValue: @"http://qa2.alliancetek.com/phpwebservice/index.php//GetCustomerInfoXML" forHTTPHeaderField:@"SOAPAction"];
[theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
[theRequest setHTTPMethod:@"POST"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
但我想以 XML 格式发送参数。