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"/>