Java web non-project directory files (pictures, videos) read

When I was doing my graduation project recently, I needed to put files (mainly pictures and videos) on the web page. Because I don't want the project to be too bloated, in line with the idea of ​​separating data and code, I put the files in the non-project directory (disk directory), and the database is also stored in the disk directory (such as G:\XX\XXX..). In this way, some problems are encountered when reading, and the solution is recorded as follows:
(1) Image reading Use the <img> tag to display the image
in the jsp page, and its src attribute supports streaming, so the solution is to write a servlet , use the input stream to read the image, and then use the response stream to output. Write the address of the servlet in src The
servlet code is as follows:

ReadFileFromDisk.servlet:

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html; charset=UTF-8");
		//filepath is the disk path of the image
		String filepath = request.getParameter("filepath");
		String transpath = filepath.replace("\\", "/");
		FileInputStream fis = new FileInputStream(transpath);
		OutputStream os = response.getOutputStream();
		try {
			int count = 0;
			byte[] buffer = new byte[1024 * 1024];
			while ((count = fis.read(buffer)) != -1)
				os.write(buffer, 0, count);
		} catch (IOException e) {
			e.printStackTrace ();
		} finally {
			if (os != null)
				os.close();
			if (fis != null)
				fis.close();
		}
	}

The jsp page is as follows:

<img src="ReadFileFromDisk?filepath=${filepath}" alt="Load failed"/>

(2) Video reading The
video player uses flowplayer. For the detailed use of flowplayer, see
[FlowPlayer parameter description_ Hou Xiaowei][1]
href cannot write the disk path, use the virtual path to solve this problem The configuration of the
virtual path is as follows:
In tomact Add the following to the <host> tag in the server.xml file:

<Context path="/file" docBase="G:\profile\video\" debug="0" reloadable="true"/>

That is, G:\\profile\\video\\ is mapped to /file, so if you access G:\\profile\\video\\a.mp4, you can write in href: /file/a.mp4

  [1]: https://www.cnblogs.com/microstep/p/4972997.html