java读取WEB-INF目录下文件

最新推荐文章于 2024-09-16 21:51:41 发布

原创最新推荐文章于 2024-09-16 21:51:41 发布 · 492 阅读

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文章标签：

#Web #Java #JSP

本文详细介绍了如何使用Java Servlet通过获取session的上下文路径、拼接文件路径并读取文件内容，然后将内容设置到request属性中，并通过forward方法将请求转发至指定的jsp页面进行展示。

public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  String output = "";
  String fileName = request.getSession().getServletContext().getRealPath(
    "/")
    + "WEB-INF/conf/ff.txt";
  fileName = fileName.replace("\\", "/");
  System.out.println(fileName);
  File file = new File(fileName);

  try {
   BufferedReader input = new BufferedReader(new FileReader(file));
   StringBuffer buffer = new StringBuffer();
   String text;

while ((text = input.readLine()) != null)
buffer.append(text + "\n");

   output = buffer.toString();
  } catch (IOException ioException) {
   System.err.println("File Error!");
  }
  request.setAttribute("output", output);
  request.getRequestDispatcher("/WEB-INF/jsp/FileDemo.jsp").forward(
    request, response);

}