servlet來搜索服務器

Question

我想寫一個servlet來搜索Tomcat服務器上的文件，它給出了文件的相對位置。

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
    String gettext = request.getParameter("name"); 
    String set = gettext; 
    String s = null; 
    RequestDispatcher dispatcher = request.getRequestDispatcher("search.jsp"); 
    request.setAttribute("text", gettext); 
    File root = new File("here i want to give localhost:8080/webappfoldername"); 
    String fileName = set + ".png"; 
    System.out.println(fileName); 

    try { 
     boolean recursive = true; 
     Collection files = FileUtils.listFiles(root, null, recursive); 

     for (Iterator iterator = files.iterator(); iterator.hasNext();) { 
      File file = (File) iterator.next(); 

      if (file.getName().equals(fileName)) { 
       System.out.println(file.getAbsolutePath()); 
       s = file.getAbsolutePath(); 
       // System.out.println(s); 
       getServletContext().setAttribute("return", s); 
       // request.setAttribute("return" ,file.getAbsolutePath()); 
       String testing = (String) getServletContext().getAttribute("return"); 
       // System.out.println(testing); 
       request.getRequestDispatcher("/page.jsp").forward(request, response); 
      } 
     } 

     if (s == null) { 
      response.setContentType("text/html"); 
      PrintWriter out = response.getWriter(); 
      System.out.println("no file found"); 
     } 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
} 

Answer 1

你所尋找的是：

File root = new File(getServletContext().getRealPath("."));