乱码解决

   public static String from8859(String source)
   {
       if(source == null)
           return null;
       String s1;
       try
       {
           String s = new String(source.getBytes("iso-8859-1"),"gbk");
           String s2 = s;
           return s2;
       }
       catch(Exception uee)
       {
           s1 = null;
       }
       String s3 = s1;
       return s3;
   }

//往数据写入时用to8859()
   public static String to8859(String source)
   {
       if(source == null)
           return null;
       String s1;
       try
       {
           String s = new String(source.getBytes("gbk"), "iso-8859-1");
           String s2 = s;
           return s2;
       }
       catch(Exception uee)
       {
           s1 = null;
       }
       String s3 = s1;
       return s3;
   }