Servlet获取当前服务器的实际路径

Servlet/Jsp需要操作服务器所拥有的资源，为此需要得到其绝对路径或实际路径，

在Servlet的doGet方法中加入以下代码可以查看服务器的实际路径。

package com.mhb;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class getRealPathServletDemo extends HttpServlet {

    public void init() throws ServletException {
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
19         response.setContentType("text/html;charset=utf-8");
20         ServletContext context = this.getServletContext();
21         PrintWriter out = response.getWriter();
22         out.print("当前服务器的实际路径为："+context.getRealPath(""));
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
    }

    public void destroy() {
        super.destroy(); 
    }
}