Cookie_Servlet.java:
package servlet_pack;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class Cookie_Servlet
*/
@WebServlet("/Cookie_Servlet")
public class Cookie_Servlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public Cookie_Servlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Cookie c = new Cookie("username", "admin"); // 创建一个Cookie，name=username，value=admin
c.setMaxAge(60*60*24); // 设置Cookie的存活时间，单位是秒
response.addCookie(c); // 将Cookie添加到响应中
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.print("<!DOCTYPE html>");
out.print("<html>");
out.print("<head>");
out.print("<title>A Servlet</title>");
out.print("</head>");
out.print("<body>");
out.print("Cookie set success");
out.print("</body>");
out.print("</html>");
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
TestCookie.java:
1 package servlet_pack;
2
3 import java.io.IOException;
4 import java.io.PrintWriter;
5
6 import javax.servlet.ServletException;
7 import javax.servlet.annotation.WebServlet;
8 import javax.servlet.http.Cookie;
9 import javax.servlet.http.HttpServlet;
10 import javax.servlet.http.HttpServletRequest;
11 import javax.servlet.http.HttpServletResponse;
12
13 /**
14 * Servlet implementation class TestCookie
15 */
16 @WebServlet("/TestCookie")
17 public class TestCookie extends HttpServlet {
18 private static final long serialVersionUID = 1L;
19
20 /**
21 * @see HttpServlet#HttpServlet()
22 */
23 public TestCookie() {
24 super();
25 // TODO Auto-generated constructor stub
26 }
27
28 /**
29 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
30 */
31 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
32 Cookie[] cs = request.getCookies(); // 拿到Cookie数组
33
34 response.setContentType("text/html");
35 PrintWriter out = response.getWriter();
36 out.print("<!DOCTYPE html>");
37 out.print("<html>");
38 out.print("<head>");
39 out.print("<title>A Servlet</title>");
40 out.print("</head>");
41 out.print("<body>");
42
43 if(cs != null && cs.length > 0){
44 for(int i = 0; i < cs.length; i++){
45 Cookie c = cs[i]; // 拿到Cookie
46 out.print(c.getName() + ":" + c.getValue()); // 输出cookie的名字和值
47
48 }
49 }
50
51 out.print("</body>");
52 out.print("</html>");
53 }
54
55 /**
56 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
57 */
58 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
59 // TODO Auto-generated method stub
60 doGet(request, response);
61 }
62
63 }
运行结果：
原文地址：https://www.cnblogs.com/ACGame/p/8452317.html
时间： 2024-10-06 18:13:44