useBean类属性[com.lgz.pojo.People]的值无效。

<%@ page import="com.lgz.*" %> >
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

<%
//People people = new People();
//people.setAddress();
//people.setAge();
//people.setId();
//people.setName();
%>

<jsp:useBean id="people" class="com.lgz.pojo.People" scope="page"/>
<jsp:setProperty name="people" property="address" value="sz"/>
<jsp:setProperty name="people" property="id" value="1"/>
<jsp:setProperty name="people" property="age" value="15"/>
<jsp:setProperty name="people" property="name" value="zs"/>

姓名：<jsp:getProperty name="people" property="name"/>
id：<jsp:getProperty name="people" property="id"/>
年龄：<jsp:getProperty name="people" property="age"/>
地址：<jsp:getProperty name="people" property="address"/>
</body>
</html>

package com.lgz.pojo;

//实体类 我们一般都是和数据库中的表结构一一对应
public class People {

    private int id;
    private String name;
    private int age;
    private String address;

    public People() {

    }

    public People(int id, String name, int age, String address) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.address = address;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "People{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", age=" + age +
                ", address='" + address + '\'' +
                '}';
    }
}

我用你的代码测试了下，没有问题，你再试试！

<jsp:useBean id="people" class="com.lgz.pojo.People" scope="page"/>
改为
<jsp:useBean id="people" class="com.lgz.pojo.People" scope="request"/>
试试

您的问题已经有小伙伴解答了，请点击【采纳】按钮，采纳帮您提供解决思路的答案，给回答的人一些鼓励哦～～

ps:开通问答VIP，享受5次/月有问必答服务，了解详情↓↓↓

【电脑端】戳>>> https://vip.csdn.net/askvip?utm_source=1146287632
【APP 】戳>>> https://mall.csdn.net/item/52471?utm_source=1146287632