转换字节码

import java.io.UnsupportedEncodingException;
public class Exchange
{
  public static String toCN(String value)
  {
    try
    {
      String cn = new String(value.getBytes("ISO-8859-1"), "gbk");
      return cn;
    }
    catch (UnsupportedEncodingException e)
    {
      e.printStackTrace();
      return null;
    }
  }
}