Iphone &引用；缺少根元素"；iOS中的Soap请求

我有SOAP Web服务，并尝试连接它。但SOAP响应包含“System.Xml.XmlException:缺少根元素”

我的obj-c代码。怎么了

NSString *soapMessage = [NSString stringWithFormat:
                         @"<?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>"
                         "<Method1 xmlns=\"http://tempuri.org/\">"
                         "<param1>string</param1>"
                         "</Method1>"
                         "</soap:Body>"
                         "</soap:Envelope>"];

NSLog(soapMessage);

NSURL *url = [NSURL URLWithString:@"web service url"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];


[theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
[theRequest addValue: @"\"http://tempuri.org/Method1\"" forHTTPHeaderField:@"SOAPAction"];
[theRequest setHTTPMethod:@"POST"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];

NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

if( theConnection )
{
    webData = [[NSMutableData data] retain];
}
else
{
    NSLog(@"theConnection is NULL");
}

NSString*soapMessage=[NSString stringWithFormat:
@""
""
""
""
“字符串”
""
""
""];
NSLog（soapMessage）；
NSURL*url=[NSURL URLWithString:@“web服务url”]；
NSMutableURLRequest*theRequest=[NSMutableUrlRequestWithURL:url]；
NSString*msgLength=[NSString stringWithFormat:@“%d”，[soapMessage length]]；
[theRequest addValue:@“text/xml；charset=utf-8”用于HttpHeaderField:@“Content Type”]；
[theRequest addValue:msgLength for HttpHeaderField:@“内容长度”]；
[请求附加值：@“\”http://tempuri.org/Method1\“”forHTTPHeaderField:@“SOAPAction”]；
[TheRequestSetHttpMethod:@“POST”]；
[TheRequestSetHttpBody:[soapMessage数据使用编码：NSUTF8StringEncoding]；
NSURLConnection*连接=[[NSURLConnection alloc]initWithRequest:theRequest委托：self]；
if（连接）
{
webData=[[NSMutableData]保留]；
}
其他的
{
NSLog（@“连接为空”）；
}

NSString*soapMessage=[NSString stringWithFormat:
@""
""
""
""
"%@"
""
""
“，str]；
Str这里有一个字符串，需要传递给param1。
希望这对你有用。

您需要从以下位置删除额外的报价：

[theRequest addValue: @"\"http://tempuri.org/Method1\"" forHTTPHeaderField:@"SOAPAction"];

应改为：

[theRequest addValue: @"http://tempuri.org/Method1" forHTTPHeaderField:@"SOAPAction"];

---

希望有帮助。

我已经知道如何使用它了。我可能使用“字符串”伪代码。有什么建议吗？不幸的是，它没有帮助：(

[theRequest addValue: @"http://tempuri.org/Method1" forHTTPHeaderField:@"SOAPAction"];