java FTPClient删除ftp服务器文件

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 @SuppressWarnings("unused")
 public Response deleteDoc(HttpServletRequest request, HttpServletResponse response) {
  log.info("ServiceWebServiceImpl deleteDoc method start");
  Map<String , Object> responseMap = new HashMap<String , Object>();
   String docName = request.getParameter("docName");
   String serviceid = request.getParameter("serviceid");
    log.info("docName>>>>>>>=============="+docName);
    log.info("serviceid>>>>>>>=============="+serviceid);
        FTPClient ftpClient = new FTPClient();
        FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_UNIX);
        conf.setServerLanguageCode("zh");
        ftpClient.configure(conf);
        boolean flag = false;
        FileOutputStream fos = null;
        try {
         ftpClient.connect(Constants.FTP_HOST,Constants.FTP_PORT);
         log.info("host :"+ Constants.FTP_HOST+" port :"+Constants.FTP_PORT);
//         ftpClient.setControlEncoding("UTF-8");
            ftpClient.login(Constants.FTP_USERNAME, "admin".equals(Constants.FTP_PASSWORD)?Constants.FTP_PASSWORD:"");
            log.info("username :"+Constants.FTP_USERNAME+" passowrd:"+Constants.FTP_PASSWORD);
           
           //检测连接是否成功 
            int reply = ftpClient.getReplyCode(); 
            if(!FTPReply.isPositiveCompletion(reply)) { 
             ftpClient.disconnect(); 
                System.err.println("FTP server refused connection."); 
                log.info("FTP server refused connection.");
                System.exit(1); 
               
            } 

            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
            ftpClient.changeWorkingDirectory(Constants.SERVICE_DOC_DOWNLOAD_PATH);
            log.info("directory :"+Constants.SERVICE_DOC_DOWNLOAD_PATH);
          
           
            String remoteFileName = null;
            try {
             remoteFileName = java.net.URLDecoder.decode(docName, "utf-8");
             log.info("remoteFileName==================="+remoteFileName);
            } catch (UnsupportedEncodingException e1) {
              e1.printStackTrace();
            }
            FTPFile[] ftpFiles = ftpClient.listFiles();
            int length = ftpFiles.length;
            int num =0;
            log.info("length==================="+length);
           
            if(ftpFiles!=null){
//             flag = ftpClient.deleteFile(new String(docName.getBytes("ISO-8859-1"), "utf-8"));
              for(FTPFile ff:ftpFiles){
               log.info("FTPFile :"+new String(ff.getName().getBytes("ISO-8859-1"), "utf-8") +" ->"+remoteFileName);
               String ftpName = new String(ff.getName().getBytes("ISO-8859-1"), "utf-8");
                log.info("转码后文件名:"+ftpName);
                  if(ftpName.equals(remoteFileName)){   
                   //设置删除权限
                   ftpClient.enterLocalPassiveMode();
                   flag = ftpClient.deleteFile(ff.getName());
                   num++;
                   log.info("flag===================="+flag);
                   ftpClient.logout();
                  }   
              }   
            }
          
            if(num==0){
             //删除数据库此文档
             serviceDocManage.deleteServiceDocByID(Long.parseLong(serviceid));
             responseMap.put("code", 0);
             responseMap.put("message", "删除文件成功");
             log.info("数据库====================删除文件成功");
            }else if(flag){
              //删除数据库此文档
              serviceDocManage.deleteServiceDocByID(Long.parseLong(serviceid));
              responseMap.put("code", 0);
                 responseMap.put("message", "删除文件成功");
                 log.info("数据库====================删除文件成功");
            }else{
             responseMap.put("code", 01);
                responseMap.put("message", "删除文件失败");
                log.info("数据库====================删除文件失败");
            }
          
        } catch (IOException e) {
         log.error("FTP删除出错！", e);
         flag = false;
            responseMap.put("code", 1);
            responseMap.put("message", "FTP删除出错！");
            return Response.ok(responseMap, "application/json").build();
        } finally {
            try {
//             fos.close();
                ftpClient.disconnect();
            } catch (IOException e) {
                log.error("关闭FTP连接发生异常！", e);
                responseMap.put("code", 2);
                responseMap.put("message", "关闭FTP连接发生异常！");
                return Response.ok(responseMap, "application/json").build();
            }
        }
       
        return Response.ok(responseMap, "application/json").build();
 }

 

 

 

 

 

 

 

 

 

 

 

 

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