1123

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 
11 <%
12 
13 request.setAttribute("mes", "页面出错!");
14 
15 %>
16 
17 <jsp:forward page="test.jsp"/>
18 
19 </body>
20 </html>
21 
22 
23 
24 <%@ page language="java" contentType="text/html; charset=UTF-8"
25     pageEncoding="UTF-8"%>
26 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
27 <html>
28 <head>
29 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
30 <title>Insert title here</title>
31 </head>
32 <body>
33 
34 <%
35 
36 String mes=request.getAttribute("mes").toString();
37 
38 %>
39 
40 转发信息=<%=mes %>
41 
42 
43 
44 </body>
45 </html>

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3     <%@page import="java.net.URLEncoder" %>
 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 5 <html>
 6 <head>
 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 8 <title>Insert title here</title>
 9 </head>
10 <body>
11 娃娃
12 <% //页面重定向,判断用户权限
13 
14 //response.sendRedirect("http://www.baidu.com"); 
15 
16 String strHq =URLEncoder.encode("汉企");
17 
18 Cookie co =new Cookie("cookie_key",strHq);
19 
20 co.setMaxAge(60*60*24*30*12);//单位秒
21 
22 response.addCookie(co);
23 
24 
25 
26 response.getWriter().write("向客户端发送信息");
27 
28 out.print("输出一段话");
29 
30 out.println("输出一段话后换行");
31 
32 out.print("再输出一段话");
33 
34 
35 
36 session.setAttribute("session_key", "hello");
37 
38 %>
39 
40 <%=strHq %>
41 
42 
43 </body>
44 </html>
45 
46 
47 <%@ page language="java" contentType="text/html; charset=UTF-8"
48     pageEncoding="UTF-8"%>
49         <%@page import="java.net.URLDecoder" %>
50     
51 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
52 <html>
53 <head>
54 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
55 <title>Insert title here</title>
56 
57 <%  //定时跳转
58 //response.setHeader("refresh","2;URL=http://www.baidu.com");
59 
60 Object obj=session.getAttribute("session_key");
61 
62 if(obj!=null)
63 {
64     out.print("session_key="+obj.toString());
65 }
66 else
67 {
68     response.sendRedirect("login.jsp");
69 }
70 %>
71 
72 </head>
73 <body>
74 
75 <%
76 
77 Cookie[] c=request.getCookies();
78 String strC="";
79 
80 if(c!=null)
81 {
82     for(int i=0;i<c.length;i++)
83     {
84         if(c[i].getName().equals("cookie_key"))
85         {
86         strC += c[i].getName() + "=" +URLDecoder.decode(c[i].getValue()) +";";
87     }
88         }
89 
90 }
91 
92 %>
93 cookie值=<%=strC %>
94 
95 </body>
96 </html>

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原文地址：https://www.cnblogs.com/ymf123/p/4989509.html