webservice and soap ios

第一種方式：

    //構建http請求對象
    NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
    
    //以下對請求信息添加屬性前四句是必有的，第五句是soap信息。
    [theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    [theRequest addValue: @"www.example.org/services/VersionUpdate/getVersionInfo" forHTTPHeaderField:@"SOAPAction"];
    
    [theRequest addValue: [NSString stringWithFormat:@"%d", xmlstr.length] forHTTPHeaderField:@"Content-Length"];
    [theRequest setHTTPMethod:@"POST"];
    [theRequest setHTTPBody:data ];// [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
    
    DMXProtocolFactory *haha =  [[DMXProtocolFactory alloc]init];
    
    //發送異步請求
   // NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:haha];
    
    //如果連接已經建好，則初始化data
    if( theConnection )
    {
        webData = [[NSMutableData data] retain];
    }
    else
    {
        NSLog(@"theConnection is NULL");
    }
    
    // 發送同步請求, 這裡得returnData就是返回得數據楽
    NSData *returnData = [NSURLConnection sendSynchronousRequest:theRequest
                                               returningResponse:nil error:nil];
    
    NSString *str = [[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
   
第二種方式：（用ASIFormDataRequest 或 ASIHTTPRequest 請求都可以 --- 但要配置好頭信息）

//    ASIFormDataRequest *reques = [[ASIFormDataRequest alloc]initWithURL:url];
    ASIHTTPRequest *request = [[ASIHTTPRequest alloc] initWithURL:url];
    //設置ASIHTTPRequest代理
//    request.delegate = aRequestModel.delegate;
    //設置協議請求類型
    [request setUserInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithInt:1],@"RequestType",nil]];
    // 設置請求方式
    [request setRequestMethod:@"POST"];

    
    // 設置請求頭
    [request setRequestHeaders:[NSMutableDictionary dictionaryWithDictionary:[DMXProtocolInteractiveEngine commonHeader:xmlstr.length]]];
    // 設置post的數據
    [request setPostBody:data];

    [request startSynchronous];
    
    NSError *errors = [request error];
    NSString *response = nil;
    if (!errors)
    {
        response = [request responseString];
    }