JSP的useBean、setProperty和getProperty指令实战

野性酷女 2021-07-24 17:11 288阅读 0赞

**一 JavaBean定义**

package lee;
    
    public class Person
    {
        private String name;
        private int age;
    
        // 无参数的构造器
        public Person()
        {
        }
        // 初始化全部成员变量的构造器
        public Person(String name , int age)
        {
            this.name = name;
            this.age = age;
        }
    
        // name的setter和getter方法
        public void setName(String name)
        {
            this.name = name;
        }
        public String getName()
        {
            return this.name;
        }
    
        // age的setter和getter方法
        public void setAge(int age)
        {
            this.age = age;
        }
        public int getAge()
        {
            return this.age;
        }
    }

**二 JSP页面**

<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title> Java Bean测试 </title>
        <meta name="website" content="http://www.crazyit.org" />
    </head>
    <body>
    
    <jsp:useBean id="p1" class="lee.Person" scope="page"/>
    
    <jsp:setProperty name="p1" property="name" value="crazyit.org"/>
    
    <jsp:setProperty name="p1" property="age" value="23"/>
    
    <jsp:getProperty name="p1" property="name"/><br/>
    
    <jsp:getProperty name="p1" property="age"/>
    </body>
    </html>

**三 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/8d4633909b954594a7d6bba34b6a286a.png