将 JSON 数据检索为 NSString 而不是整数？

Question

仅当我的 JSON 数据是一系列整数（例如 [11,12,13]）时，下面的代码才有效。我怎样才能让它检索消息/短语呢？

- (IBAction)checkmessages:(id)sender
{
        responseData = [[NSMutableData data] retain];       
        NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"file:///Users/Alex/Desktop/Test.json"]];
        [[NSURLConnection alloc] initWithRequest:request delegate:self];
    }
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {      
    [connection release];

    NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
    [responseData release];

    NSError *error;
    SBJSON *json = [[SBJSON new] autorelease];
    NSArray *luckyNumbers = [json objectWithString:responseString error:&error];
    [responseString release];   

    if (luckyNumbers == nil)
        label.text = [NSString stringWithFormat:@"JSON parsing failed: %@", [error localizedDescription]];
    else {      
        NSMutableString *text = [NSMutableString stringWithString:@"Latest Message:\n"];

        for (int i = 0; i < [luckyNumbers count]; i++) 
            [text appendFormat:@"%@\n", [luckyNumbers objectAtIndex:i]];

        label.text =  text;
    }
}

编辑： 当我的 JSON 文件看起来像：[10,11,12] 时，它工作正常，但如果我将其更改为：[Message 1,Message 2]，我收到错误：“JSON 解析失败：解析数组时的预期值”

Answer 1

您的 JSON 看起来格式错误，

 [Message 1,Message 2]

应该是

 ["Message 1", "Message 2"]

Answer 2

JSON 中的“字符串”必须用引号引起来 ("")。