我最近在開(kāi)發(fā)時(shí)遇到了文件另存為時(shí)文件名出現(xiàn)亂碼，在火狐上正常的文件名，在IE中又出現(xiàn)亂碼問(wèn)題，然后好不容易在IE下調(diào)試好了文件名亂碼問(wèn)題，在火狐下又出現(xiàn)亂碼，最后終于感覺(jué)這樣是能解決了。具體如下：

復(fù)制代碼代碼如下:

public static String toUtf8String(String s) { 

             StringBuffer sb = new StringBuffer(); 
             for (int i = 0; i < s.length(); i++) { 
                 char c = s.charAt(i); 
                 if (c >= 0 && c <= 255) { 
                     sb.append(c); 
                 } else { 
                     byte[] b; 
                     try { 
                         b = Character.toString(c).getBytes("utf-8"); 
                     } catch (Exception ex) { 
                         exceptionUtil.error("將文件名中的漢字轉(zhuǎn)為UTF8編碼的串時(shí)錯(cuò)誤，輸入的字符串為：" + s); 
                         b = new byte[0]; 
                     } 
                     for (int j = 0; j < b.length; j++) { 
                         int k = b[j]; 
                         if (k < 0) 
                             k += 256; 
                         sb.append("%" + Integer.toHexString(k).toUpperCase()); 
                     } 
                 } 
             } 
             return sb.toString(); 
         } 

         /** 
          * 根據(jù)不同瀏覽器將文件名中的漢字轉(zhuǎn)為UTF8編碼的串,以便下載時(shí)能正確顯示另存的文件名. 
          *  
          * @param s 
          *            原文件名 
          * @return 重新編碼后的文件名 
          */ 
         public static String toUtf8String(HttpServletRequest request, String s) { 
             String agent = request.getHeader("User-Agent"); 
             try { 
                 boolean isFireFox = (agent != null && agent.toLowerCase().indexOf("firefox") != -1); 
                 if (isFireFox) { 
                     s = new String(s.getBytes("UTF-8"), "ISO8859-1"); 
                 } else { 
                     s = StringUtil.toUtf8String(s); 
                     if ((agent != null && agent.indexOf("MSIE") != -1)) { 
                         // see http://support.microsoft.com/default.aspx?kbid=816868 
                         if (s.length() > 150) { 
                             // 根據(jù)request的locale 得出可能的編碼 
                             s = new String(s.getBytes("UTF-8"), "ISO8859-1"); 
                         } 
                     } 
                 } 
             } catch (UnsupportedEncodingException e) { 
                 e.printStackTrace(); 
             } 
             return s; 
         }