iPhone开发 调用wcf服务

//Web Service Call
    NSString *soapMessage = [NSString stringWithFormat:
                             @"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
                             "<SOAP-ENV:Envelope \n"
                             "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" \n"
                             "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" \n" 
                             "xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" \n"
                             "SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" \n"
                             "xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\"> \n"
                             "<SOAP-ENV:Body> \n"
                             "<GetData xmlns=\"http://tempuri.org/\">"
                             "</GetData> \n"
                             "</SOAP-ENV:Body> \n"
                             "</SOAP-ENV:Envelope>"];
    
    
    //[[NSURLCache sharedURLCache] removeAllCachedResponses];
    NSURL *url = [NSURL URLWithString:@"http://192.168.1.20:86/Service1.svc"];                           
    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://tempuri.org/IService1/GetData" forHTTPHeaderField:@"SOAPAction"];
    [theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
    [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");
    }

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    [webData setLength:0];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    [webData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    label.text = [NSString stringWithFormat:@"Connection failed: %@", [error description]];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    [connection release];
    NSLog(@"Data has been loaded");
    NSXMLParser *parser = [[NSXMLParser alloc] initWithData:webData];
    [parser setDelegate:self];
    [parser parse];
    [webData release];
}

- (void)parserDidStartDocument:(NSXMLParser *)parser {
    
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict {
    currentElement = elementName;
}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
    

        NSString *fixedString = [string stringByTrimmingCharactersInSet:
                                 [NSCharacterSet whitespaceAndNewlineCharacterSet]];
        
        if ([currentElement isEqualToString:@"GetDataResult"])
        {
            label.text=@"";
            UIAlertView  *view = [[UIAlertView alloc] initWithTitle:@"调用wcf成功！" message:fixedString delegate:nil cancelButtonTitle:nil otherButtonTitles:nil] ;
            [view show];
            [view release];
        }

}