common-net包的ftp上传进度

最新推荐文章于 2021-03-02 18:04:52 发布

最新推荐文章于 2021-03-02 18:04:52 发布 · 215 阅读

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#.net #Spring #MVC

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本文介绍了一个使用Spring MVC实现的文件上传功能，并通过FTP进行文件存储的过程。文章详细解释了如何处理文件上传请求、获取原始文件名、设置FTP客户端参数等步骤。此外，还提供了一种方法来实时获取文件上传的进度。


//上传文件
public void uploadFile(HttpServletRequest request, HttpServletResponse response) throws Exception{
    MultipartHttpServletRequest fileRequest = (MultipartHttpServletRequest)request;
    MultipartFile file = fileRequest.getFile("file");
    String name = new String(file.getOriginalFilename().getBytes(), "ISO-8859-1");
    transSize = 0;
    totalSize = file.getSize();
    fileName = file.getOriginalFilename();
    PrintWriter out = response.getWriter();
    ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
    ftpClient.setFileTransferMode(FTP.STREAM_TRANSFER_MODE);
    int buff = 1024;
    ftpClient.setBufferSize(buff);
    int contentLen = 0;
    byte[] upload = new byte[1024];
    OutputStream output = ftpClient.appendFileStream(ftpClient.printWorkingDirectory() + "/" + name);
    InputStream input = file.getInputStream();
    try{
        do{
            contentLen = input.read(upload);
            output.write(upload, 0 ,contentLen);
	   transSize += contentLen;
        }while(contentLen >= 0);
    } catch(ArrayIndexOutOfBoundsException e){
        e.printStackTrace();
    } finally {
        input.close();
        output.flush();
        out.write("true");
        out.close();
    }
}

//取得进度		
public void getPercent(HttpServletRequest request, HttpServletResponse response) throws Exception{
    PrintWriter out = response.getWriter();
    out.write((double)transSize/(double)totalSize + "");
    out.close();
}