接收邮件时,获取某些邮件发送程序发送的email地址,发送地址显示为乱码

    public static String getFrom(Message msg){
        String from="";
        try{
          if(msg.getFrom()[0]!=null)
            from=msg.getFrom()[0].toString();
          if(from.startsWith("=?GB")||from.startsWith("=?gb")){
            from=MimeUtility.decodeText(from);
          }else{
            from=StringUtils.toChinese(from);
          }
        }catch(Exception e){
          e.printStackTrace();
        }
        return from;
      }

StringUtils类方法

public static String toChinese(String strvalue){
        try{
          if(strvalue==null)
            return null;
          else{
            strvalue = new String(strvalue.getBytes("ISO8859_1"), "GBK");
            return strvalue;
          }
        }catch(Exception e){
          return null;
        }
      }
    
    public static String getFromBASE64(String s) {
        if (s == null)
            return null;
        try {
            byte[] b = Base64.decodeBase64(s);
            return new String(b);
        } catch (Exception e) {
            return null;
        }
    }

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