对url包含中文进行解码

抓取详情图片，包含中文无法上传到oss系统，想到将url地址中的汉字进行转码

public static String getUtf8Url(String url) {
   char[] chars = url.toCharArray();
   StringBuilder utf8Url = new StringBuilder();
   final int charCount = chars.length;
   for (int i = 0; i < charCount; i++) {
      byte[] bytes = ("" + chars[i]).getBytes();
      if (bytes.length == 1) {
         utf8Url.append(chars[i]);
      }else{
         try {
            utf8Url.append(URLEncoder.encode(String.valueOf(chars[i]), "UTF-8"));
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }
      }
   }
   return utf8Url.toString();
}