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  • RequestDemo01

    package com.etc.requestdemo;

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

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

    public class RequestDemo01 extends HttpServlet {

    /**
    * Constructor of the object.
    */
    public RequestDemo01() {
    super();
    }

    /**
    * Destruction of the servlet. <br>
    */
    public void destroy() {
    super.destroy(); // Just puts "destroy" string in log
    // Put your code here
    }

    /**
    * The doGet method of the servlet. <br>
    *
    * This method is called when a form has its tag value method equals to get.
    *
    * @param request the request send by the client to the server
    * @param response the response send by the server to the client
    * @throws ServletException if an error occurred
    * @throws IOException if an error occurred
    */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
    //获得客户机信息
    String requestUrl = request.getRequestURL().toString();//得到请求的URL地址
    String requestUri = request.getRequestURI();//得到请求的资源
    String queryString = request.getQueryString();//得到请求的URL地址中附带的参数
    String remoteAddr = request.getRemoteAddr();//得到来访者的IP地址
    String remoteHost = request.getRemoteHost();
    int remotePort = request.getRemotePort();
    String remoteUser = request.getRemoteUser();
    String method = request.getMethod();//得到请求URL地址时使用的方法
    String pathInfo = request.getPathInfo();
    String localAddr = request.getLocalAddr();//获取WEB服务器的IP地址
    String localName = request.getLocalName();//获取WEB服务器的主机名
    response.setCharacterEncoding("UTF-8");//设置将字符以"UTF-8"编码输出到客户端浏览器
    //通过设置响应头控制浏览器以UTF-8的编码显示数据,如果不加这句话,那么浏览器显示的将是乱码
    response.setHeader("content-type", "text/html;charset=UTF-8");
    PrintWriter out = response.getWriter();
    out.write("获取到的客户机信息如下:");
    out.write("<hr/>");
    out.write("请求的URL地址:"+requestUrl);
    out.write("<br/>");
    out.write("请求的资源:"+requestUri);
    out.write("<br/>");
    out.write("请求的URL地址中附带的参数:"+queryString);
    out.write("<br/>");
    out.write("来访者的IP地址:"+remoteAddr);
    out.write("<br/>");
    out.write("来访者的主机名:"+remoteHost);
    out.write("<br/>");
    out.write("使用的端口号:"+remotePort);
    out.write("<br/>");
    out.write("remoteUser:"+remoteUser);
    out.write("<br/>");
    out.write("请求使用的方法:"+method);
    out.write("<br/>");
    out.write("pathInfo:"+pathInfo);
    out.write("<br/>");
    out.write("localAddr:"+localAddr);
    out.write("<br/>");
    out.write("localName:"+localName);
    out.write("<br/>");
    }

    /**
    * The doPost method of the servlet. <br>
    *
    * This method is called when a form has its tag value method equals to post.
    *
    * @param request the request send by the client to the server
    * @param response the response send by the server to the client
    * @throws ServletException if an error occurred
    * @throws IOException if an error occurred
    */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {

    doGet(request, response);
    }

    /**
    * Initialization of the servlet. <br>
    *
    * @throws ServletException if an error occurs
    */
    public void init() throws ServletException {
    // Put your code here
    }

    }

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  • 原文地址:https://www.cnblogs.com/ipetergo/p/6222089.html
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