浅谈java获取服务器基本信息

2019-11-26 09:11:17

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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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