请求行：
package com.my.servlet;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.net.URL;
import javax.servlet.ServletConfig;
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;
/**
* Servlet implementation class ContextServlet
*/
@WebServlet("/ContextServlet")
public class ContextServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public ContextServlet() {
super();
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
String method = request.getMethod();//获取使用的HTTP方法；
String URi = request.getRequestURI();//获取请求中的资源名部分
String protocol = request.getProtocol();//获得协议号
String queryString = request.getQueryString();//获得查询语句
String servletPath = request.getServletPath();
String contextpath = request.getContextPath();//获得web应用路径
PrintWriter out = response.getWriter();
out.println("<p>请求使用的http方法"+method+"</p>");
out.println("<p>请求行中的资源名部分"+URi+"</p>");
out.println("<p>请求使用的协议"+protocol+"</p>");
out.println("<p>查询字符串"+queryString+"</p>");
out.println("<p>Servlet所映射的路径"+servletPath+"</p>");
out.println("<p>请求资源所属的WEb应用路径"+contextpath+"</p>");
out.flush();
out.close();
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}