浅谈java获取服务器基本信息

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;


@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("");
    out.println("");
    out.println("");
    out.println("");
    out.println("");
    out.println("服务器名称："+request.getServerName()+"");
    out.println("服务器端口："+request.getServerPort()+"");
    out.println(""+context.getServerInfo()+"");
    out.println("");
    out.println("");  
    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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