webservice and soap ios

第一种方式：

    //构建http请求对象
    NSMutableuRLRequest *theRequest = [NSMutableuRLRequest requestWithURL:url];
    
    //以下对请求信息添加属性前四句是必有的，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];
    
    //发送异步请求
   // NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:haha];
    
    //如果连接已经建好，则初始化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];
   
第二种方式：（用ASIFormDataRequest 或 ASIHTTPRequest 请求都可以 --- 但要配置好头信息）

//    ASIFormDataRequest *reques = [[ASIFormDataRequest alloc]initWithURL:url];     ASIHTTPRequest *request = [[ASIHTTPRequest alloc] initWithURL:url];     //设置ASIHTTPRequest代理 //    request.delegate = aRequestModel.delegate;     //设置协议请求类型     [request setUserInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithInt:1],@"RequestType",nil]];     // 设置请求方式     [request setRequestMethod:@"POST"];          // 设置请求头     [request setRequestHeaders:[NSMutableDictionary dictionaryWithDictionary:[DMXProtocolInteractiveEngine commonHeader:xmlstr.length]]];     // 设置post的数据     [request setPostBody:data];     [request startSynchronous];          NSError *errors = [request error];     Nsstring *response = nil;     if (!errors)     {         response = [request responseString];     }