通过FTP下载，修改待下载的txt文件

/**

* 检查结果记录比较多，存储于独立的数据库服务器

* @param mapping

* @param form

* @param request

* @param response

* @return

*/

public ActionForward checkResultDown(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) throws JSchException {

 

String downDate = request.getParameter("downDate");

String selOrg = "";

String downFile = "";

try {

selOrg= URLDecoder.decode(request.getParameter("selOrg"),"UTF-8");

} catch (UnsupportedEncodingException e1) {

e1.printStackTrace();

}

//服务器上存在的文件名称规则：机构代码_日期

downFile = selOrg.split("_")[0]+"_"+downDate;

FTPClient ftpClient = new FTPClient();

try {

String hosts =  Constant.getStPara("hosts");

String user = Constant.getStPara("user2");

String pwd = Constant.getStPara("pwd");

 

String tmpPath = Constant.getStPara("tmpResultPath");

File f = new File(tmpPath);

if(!f.exists()){

f.mkdirs();

}

 

ftpClient.connect(hosts);

ftpClient.setControlEncoding("UTF-8");  

 

FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);  

conf.setServerLanguageCode("zh");

//FTP登录后用户会有自己初始化配置的目录

ftpClient.login(user, pwd);

FTPFile[] fs = ftpClient.listFiles();

ftpClient.setBufferSize(1024);

// 设置文件类型（二进制）

ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);

 

FileOutputStream fl = null;

 

for (int i = 0; i < fs.length; i++) {

FTPFile ff = fs[i];

String fileName  = ff.getName();

if (fileName.startsWith(selOrg)) {

 

ServletOutputStream outputStream = response.getOutputStream();

// 这个就就是弹出下载对话框的关键代码

response.setHeader("Content-disposition","attachment;filename="+ fileName);

fl = new FileOutputStream(tmpPath+fileName);

ftpClient.retrieveFile(fileName, fl);

//将FTP服务器上的txt文件保存到本地

fl.flush();

fl.close();

       BufferedReader in_=new BufferedReader(new FileReader(tmpPath+fileName));

       String line;

       int count=1;

       while((line=in_.readLine())!=null){

       if(count==1){

       outputStream.println("规则ID，检测日期，规则说明，规则组ID，检查专题，系统来源，检查表，检查列，检查维度，维度细分，机构号，检查总数，通过数，失败数，出错率，通过率");

       }

       outputStream.println(line);

           count++;

       }

       in_.close();

outputStream.flush();

outputStream.close();

break;

}

}

} catch (IOException e) {

e.printStackTrace();

throw new RuntimeException(e.getMessage());

} finally {

try {

ftpClient.disconnect();

} catch (IOException e) {

e.printStackTrace();

throw new RuntimeException("关闭FTP连接发生异常！", e);

}

}

 

    return null;

}