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Java获取服务器基本信息

时间:2018-06-04  来源:未知  作者:admin666

实现步骤:

(1)创建servlet BrowserServer

(2)调用HttpServletRequest对象的getServerName()方法获取服务器名称

(3)调用HttpServletRequest对象的getServerPort()方法获取服务器端口

(4)首先调用getServletContext()方法获取ServletContext对象,然后调用ServletContext对象的getServerInfo()方法获取服务器环境信息名称、版本信息

(5)利用HttpServletResponse对象的PrintWriter将信息显示到页面

package example.servlet;

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

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

/**
 * Servlet implementation class BrowserServer
 */
@WebServlet("/BrowserServer")
public class BrowserServer extends HttpServlet {
    private static final long serialVersionUID = 1L;
     
   
    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=utf-8");
        PrintWriter out=response.getWriter();
        ServletContext context=getServletContext();
       
        out.println("<html>");
        out.println("<head>");
        out.println("<title>服务器信息</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("<h3>服务器名称:"+request.getServerName()+"</h3>");
        out.println("<h3>服务器端口:"+request.getServerPort()+"</h3>");
        out.println("<h3>"+context.getServerInfo()+"</h3>");
        out.println("</body>");
        out.println("<html>");   
        out.close();
    }


    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        processRequest(request,response);
    }


    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        processRequest(request,response);
    }

}

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