NSString *name = @"联通测试";NSString *utfName = [name stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]];NSString *tempName = [utfName stringByRemovingPercentEncoding];

 打印：utf:%E8%81%94%E9%80%9A%E6%B5%8B%E8%AF%95    temp:联通测试