字符串过滤

-(NSString*)RemoveSpecialCharacter: (NSString *)str {
    NSRange urgentRange = [str rangeOfCharacterFromSet: [NSCharacterSet characterSetWithCharactersInString:@",.？、 ~￥#&<>《》()[]{}【】^@/￡¤|§¨「」『』￠￢￣~@#&*（）——+|《》$_€"]];
    if(urgentRange.location != NSNotFound)    {
        return [self RemoveSpecialCharacter:[str stringByReplacingCharactersInRange:urgentRange withString:@""]];
    }
    return str;
}