黑马day04 request获取客户机的信息

使用request可以获取请求中过程中的信息：

package cn.itheima.request;

import java.io.IOException;

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

public class RequestServlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//1.得到客户机的完整的url地址
		String url = request.getRequestURL().toString();
		System.out.println(url);
		//2.得到客户机的uri
		String uri = request.getRequestURI();
		System.out.println(uri);
		//3.请求参数的参数部分
		String params = request.getQueryString();
		System.out.println(params);
		//4.客户机的ip地址
		String ip = request.getRemoteAddr();
		System.out.println(ip);
		//5.得到客户机的请求方式get post
		String method = request.getMethod();
		System.out.println(method);
		//6.得到当前web应用虚拟目录，工程中不要求写死
		String contextPath = request.getContextPath();
		System.out.println(contextPath);
	}

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

}

运行结果：
http://localhost:8080/day04/servlet/RequestServlet
/day04/servlet/RequestServlet

username=liweikang&password=123

0:0:0:0:0:0:0:1

GET

/day04