一、创建一个JavaBean
UserBean.java
1 package jsp.test;
2
3 public class UserBean {
4
5 private String userName;
6 private String pwd;
7 private String name;
8 private String gender;
9 private int age;
10 private String email;
11 private String tel;
12 private String mphone;
13 public String getUserName() {
14 return userName;
15 }
16 public void setUserName(String userName) {
17 this.userName = userName;
18 }
19 public String getPwd() {
20 return pwd;
21 }
22 public void setPwd(String pwd) {
23 this.pwd = pwd;
24 }
25 public String getName() {
26 return name;
27 }
28 public void setName(String name) {
29 this.name = name;
30 }
31 public String getGender() {
32 return gender;
33 }
34 public void setGender(String gender) {
35 this.gender = gender;
36 }
37 public int getAge() {
38 return age;
39 }
40 public void setAge(int age) {
41 this.age = age;
42 }
43 public String getEmail() {
44 return email;
45 }
46 public void setEmail(String email) {
47 this.email = email;
48 }
49 public String getTel() {
50 return tel;
51 }
52 public void setTel(String tel) {
53 this.tel = tel;
54 }
55 public String getMphone() {
56 return mphone;
57 }
58 public void setMphone(String mphone) {
59 this.mphone = mphone;
60 }
61
62
63
64 }
二、JavaBean的生命周期---------1.page范围
Counter.java
1 package bean;
2
3 public class Counter {
4 public Counter(){
5 }
6 private int count=0;
7 public int getCount() {
8 return count;
9 }
10 public void setCount(int count) {
11 count = count;
12 }
13
14 }
usingCounter.jsp
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>page 类型的生命周期</title> 8 </head> 9 <body> 10 <jsp:useBean id="count" scope="page" class="bean.Counter"/> 11 <font color="blue">Show:page</font><br><br> 12 <br>You are the 13 <font color=green> 14 <jsp:getProperty name="count" property="counter"/></font>Viewer 15 </body> 16 </html>
使用page计数器的值永远保持为1，不更新。。
三、JavaBean的生命周期-----------2.request
时间： 2024-08-23 22:59:40