package pm_cn.itcast.request;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/*
 *  获得 客户机信息的 api详解 : 
 * 
 */
public class RequestDemo1 extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		StringBuffer requestURL = request.getRequestURL();
		// 返回 请求的 资源 名称 
		String requestURI = request.getRequestURI();
		
		// URI (universal resource identifier)  与  URL(universal resource link) 区别 ?  http://www.sina.com   chrome://
		// 返回 查询路径
		String queryString = request.getQueryString();
		
		// addr -->> address 表示 地址, 返回 来访者的 ip 地址 
		String ipDizhi = request.getRemoteAddr();  
		
		// 请求方式
		String method = request.getMethod(); 
		// 获得 web 工程 的 对外 访问 路径   :　/day11
		String contextPath = request.getContextPath();
		
		System.out.println("requestURL : " + requestURL);
		System.out.println("requestURI : " + requestURI);
		System.out.println("queryString : " + queryString);
		System.out.println("ipDizhi : " + ipDizhi);
		System.out.println("method : " + method);
		System.out.println("contextPath : " + contextPath);
		
		System.out.println("请求的资源 名称 : " + requestURI.substring(contextPath.length()));
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doGet(request, response);
	}

}