import java.io.IOException;

import javax.servlet.Servlet;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class ServletUrlInformation extends HttpServlet implements Servlet {

    protected void doGet(HttpServletRequest request,

    HttpServletResponse response) throws ServletException, IOException {

    doPost(request, response);

    }

    protected void doPost(HttpServletRequest request,

    HttpServletResponse response) throws ServletException, IOException {

    String url = request.getRequestURL().toString();//取得请求的URL

    String queryString = request.getQueryString();//取得请求字符串

    String uri = request.getRequestURI();//取得请求URI

    String scheme = request.getScheme();

    String serverName = request.getServerName();//服务名

    int portNumber = request.getServerPort();//端口

    String contextPath = request.getContextPath();//上下文环境

    String servletPath = request.getServletPath();//路径

    String pathInfo = request.getPathInfo();//路径信息

    String query = request.getQueryString();

    }