判断字符串的特殊字符串

+ (BOOL)JudgeTheillegalCharacter:(NSString *)content{

    //提示 标签不能输入特殊字符

    NSString *str =@"^[A-Za-z0-9\\u4e00-\u9fa5]+$";

    NSPredicate* emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", str];

    if (![emailTest evaluateWithObject:content]) {

        return YES;

    }

    return NO;

}