objective-c – NSJSONSerialization中未转义的控制字符

- (NSString *)StringByRemovingControlCharacters: (NSString *)inputString 
{ 
    NSCharacterSet *controlChars = [NSCharacterSet controlCharacterSet]; 
    NSRange range = [inputString rangeOfCharacterFromSet:controlChars]; 
    if (range.LOCATIOn != NsnotFound) { 
        NSMutableString *mutable = [NSMutableString StringWithString:inputString]; 
        while (range.LOCATIOn != NsnotFound) { 
            [mutable deleteCharactersInRange:range]; 
            range = [mutable rangeOfCharacterFromSet:controlChars]; 
        } 
        return mutable; 
    } 
    return inputString; 
}

收到NSData后,我将其转换为NSString,调用上面的方法获取一个带有删除控制字符的新字符串,然后再将新的NSString转换为NSData进行进一步处理.