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JavaBean实体类

作者:互联网

JavaBean

就是实体类

JavaBean有特定的写法:

一般用来和数据库的字段做映射:ORM

ORM:对象关系映射

例如:

id name age address
1 1 12 西安
2 2 121 西安
3 3 12 西安
class People{
	private int id;
    private String name;
    private int age;
    private String address;
}

class A{
    new people(1,"1",12,"西安");
    new people(2,"2",121,"西安");
    new people(3,"3",12,"西安");
}

jsp标签也可以对实体类创建对象并赋值:

<jsp:useBean id="people" class="com.kuang.pojo.People" scope="page"/>
<jsp:setProperty name="people" property="id" value="1"/>
<jsp:setProperty name="people" property="name" value="1"/>
<jsp:setProperty name="people" property="age" value="12"/>
<jsp:setProperty name="people" property="address" value="西安"/>
<%--获取对象中的值--%>
id:<jsp:getProperty name="people" property="id"/>
姓名:<jsp:getProperty name="people" property="name"/>
年龄:<jsp:getProperty name="people" property="age"/>
地址:<jsp:getProperty name="people" property="address"/>

标签:12,people,private,实体类,西安,id,JavaBean
来源: https://www.cnblogs.com/H-scholar/p/15757422.html