其他Web服務調用 - XML POST請求 - iPhone

Question

我有一個關於xml調用REST Web服務的問題，我必須將以下參數傳遞給我的Web服務，格式如下：

http://XXX.XXX.XXX.XXX/gayanAPI/GayanRESTService.svc/login

所以我寫this.But其做出一些錯誤代碼。 （響應代碼：400）我的示例代碼如下;

//prepare request 
NSString *urlString = [NSString stringWithFormat:@"http://XXX.XXX.XXX.XXX/gayanAPI/GayanRESTService.svc/login"]; 
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ; 
[request setURL:[NSURL URLWithString:urlString]]; 
[request setHTTPMethod:@"POST"]; 

//set headers 
NSString *contentType = [NSString stringWithFormat:@"application/xml"]; 
[request addValue:contentType forHTTPHeaderField: @"Content-Type"]; 

//create the body 
NSMutableData *postBody = [NSMutableData data]; 
[postBody appendData:[[NSString stringWithFormat:@"<Login xmlns="">"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[[NSString stringWithFormat:@"<UserId>%@</UserId>",@"200"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[[NSString stringWithFormat:@"<PassWord>%@</PassWord>",@"123"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[[NSString stringWithFormat:@"<ResId>%@</ResId>",@"1000"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[[NSString stringWithFormat:@"<DeviceId>%@</DeviceId>",@"1234"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[[NSString stringWithFormat:@"</Login>"] dataUsingEncoding:NSUTF8StringEncoding]]; 

//post 
[request setHTTPBody:postBody]; 

//get response 
NSHTTPURLResponse* urlResponse = nil; 
NSError *error = [[NSError alloc] init]; 
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error]; 
NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; 
NSLog(@"Response Code: %d", [urlResponse statusCode]); 
if ([urlResponse statusCode] >= 200 && [urlResponse statusCode] < 300) { 
    NSLog(@"Response: %@", result); 
    //here you get the response 
} 

它是什麼原因。我在創建XML請求時犯了一個錯誤。請幫我解決這個問題？你能給我一個這樣的代碼嗎？我厭倦了這一點。

非常感謝。

Answer 1

在這一行，

[postBody appendData:[[NSString stringWithFormat:@"<Login xmlns="">"] dataUsingEncoding:NSUTF8StringEncoding]]; 

你需要用反斜槓引用雙引號（「）（\），如下所示：

[postBody appendData:[[NSString stringWithFormat:@"<Login xmlns=\"\">"] dataUsingEncoding:NSUTF8StringEncoding]]; 

我不知道它是否會引起錯誤，雖然