1、前台jsp代码 himily.jsp，定义了用户名和密码两个输入框，使用post方式提交：/order-web/HimilyServlet其中order-web为站点名称，HimilyServlet为servlet访问路径

Welcome to here

用户名：
密码：

himily.jsp

2、servlet层代码：MyServlet.java

新建MyServlet并且指定servlet的路径为/HimilyServlet

/p>

"http://java.sun.com/dtd/web-app_2_3.dtd" >

Archetype Created Web Application

OrderServlet

OrderServlet

com.suning.logistics.order.web.OrderServlet

QueryOrder

QueryOrder

com.suning.logistics.order.web.QueryOrder

MyServlet

MyServlet

com.suning.logistics.order.web.MyServlet

OrderServlet

/OrderServlet

QueryOrder

/QueryOrder.do

MyServlet

/HimilyServlet

web.xml

MyServlet.java代码，这里是接受客户端的请求以及处理后的响应

方法一：

Map ps = request.getParameterMap();

获取客户端的所有请求参数的Key和Value值存入一个Map中，并且Value是数组类型，便于有相同key的时候组成二维数组

1 packagecom.suning.logistics.order.web;2

3 importjava.io.IOException;4 importjava.io.PrintWriter;5 importjava.security.Principal;6 importjava.util.Map;7

8 importjavax.servlet.ServletException;9 importjavax.servlet.http.HttpServlet;10 importjavax.servlet.http.HttpServletRequest;11 importjavax.servlet.http.HttpServletResponse;12

13 /**

14 * Servlet implementation class MyServlet15 */

16 public class MyServlet extendsHttpServlet {17 private static final long serialVersionUID = 1L;18

19 /**

20 *@seeHttpServlet#HttpServlet()21 */

22 publicMyServlet() {23 super();24 //TODO Auto-generated constructor stub

25 }26

27 /**

28 *@seeHttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)29 */

30 protected void doGet(HttpServletRequest request, HttpServletResponse response) throwsServletException, IOException {31 try{32 //System.out.println("himily's servlet!");33 //response.getWriter().write("aaaa");

34 request.setCharacterEncoding("utf-8");35 response.setContentType("text/html;charset=utf-8");36 String user = request.getParameter("user");37 String pswd = request.getParameter("pswd");38 response.setStatus(200);39 PrintWriter pw=response.getWriter();40 pw.write("

登录成功！\n你输入的用户名为："+user+"\n你输入的密码为："+pswd+"

");41 pw.close();42 }catch(Exception e){43 response.getWriter().write(e.toString());44 }45

46

47 }48

49 /**

50 *@seeHttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)51 */

52 protected void doPost(HttpServletRequest request, HttpServletResponse response) throwsServletException, IOException {53 //TODO Auto-generated method stub54 //doGet(request,response);

55 Map ps =request.getParameterMap();56 request.setCharacterEncoding("utf-8");57 response.setContentType("text/html;charset=utf-8");58 //String user = request.getParameter("user");59 //String pswd = request.getParameter("pswd");

60 response.setStatus(200);61 PrintWriter pw=response.getWriter();62 pw.write("

登录成功！\n你输入的用户名为："+ps.get("user")[0]+"\n你输入的密码为："+ps.get("pswd")[0]+"

");63 pw.close();64 }65

66 }

MyServlet.java

方法二：

//获取客户端POST参数的值

String user = request.getParameter("user");

String pswd = request.getParameter("pswd");

protected void doPost(HttpServletRequest request, HttpServletResponse response) throwsServletException, IOException {//TODO Auto-generated method stub//doGet(request,response);//Map ps = request.getParameterMap();

request.setCharacterEncoding("utf-8");

response.setContentType("text/html;charset=utf-8");//获取客户端POST参数的值

String user = request.getParameter("user");

String pswd= request.getParameter("pswd");

response.setStatus(200);

PrintWriter pw=response.getWriter(); //输出响应信息到客户端

pw.write("

登录成功！\n你输入的用户名为："+user+"\n你输入的密码为："+pswd+"

");

pw.close();

}

servlet方法二

3、访问地址：

POST访问地址为：http://localhost:9008/order-web/himily.jsp

Get方式访问地址：http://localhost:9008/order-web/HimilyServlet?user=aaa&pswd=bbbb

直接访问Servlet的地址：http://localhost:9008/order-web/HimilyServlet