字段值包含空格或符號時提交表單錯誤

Question

我在發送電子郵件時遇到問題。如果消息只有一個單詞，代碼工作得很好。當我添加多個單詞時，即使用空格或符號時，它會錯誤地顯示「出現連接錯誤，請確保您連接到互聯網，然後再試一次」。

- (void)sendAction { 

NSString *email = [self.emailTxt text]; 
NSString *message = [self.messageTxt text]; 
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@?email=%@&message=%@", kITSuggestionPage, email, message]]; 
NSURLRequest *request = [NSURLRequest requestWithURL:url]; 

[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { 
    NSString *title = (!error)? @"Message Sent" : @"Error"; 
    NSString *message = (!error)? @"Thank you for your Feedback, we hope it will help us to make this product even better." : @"There was an connection error. Please make sure you have internet connection and try again later."; 
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:message delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil, nil]; 
    [alert show]; 

    NSLog(@"Error: %@", error.localizedDescription); 
}]; 


if (email && (email.length > 0)) { 
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults]; 
    [userDefaults setObject:email forKey:kITUserEmailKey]; 
    [userDefaults synchronize]; 
} 
} 

Answer 1

你必須URL轉義您message參數（未在網址中不允許有百分之編碼，例如%20空間基本取代某些字符）。

實例（假設你使用ARC）：

NSString *message = [self.messageTxt text]; 
message = CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(NULL, (CFStringRef)message, NULL, CFSTR("!*'();:@&=+$,/?%#[]"), kCFStringEncodingUTF8)); 
NSURL *url = ... 

Answer 2

嘗試在消息的空格位置添加％20。如果現在工作正常，那麼問題在於編碼。在發送請求之前對您的URL進行編碼。

NSString *urlString = [urlString stringByReplacingPercentEscapesUsingEncoding :NSASCIIStringEncoding]; 

這將對URL進行編碼。