JavaBean

　　jsp中可以使用useBean类似java对类的操作

    <%
       People p = new People();
       p.setId(1);
       p.setName("张三");
       p.setAge(18);
       p.setAddress("西安");
       p.getId();
       p.getAge();
       p.getName();
       p.getAddress();
    %>

　　　　而这等价

<jsp:useBean id="people" class="com.zhang.pojo.People" scope="page"/>
<jsp:setProperty name="people" property="id" value="1"/>
<jsp:setProperty name="people" property="name" value="张三"/>
<jsp:setProperty name="people" property="age" value="18"/>
<jsp:setProperty name="people" property="address" value="北京"/>
<p>
    <span>id：</span>
    <jsp:getProperty name="people" property="id"/>
</p>
<p>
    <span>姓名：</span>
    <jsp:getProperty name="people" property="name"/>
</p>
<p>
    <span>年龄：</span>
    <jsp:getProperty name="people" property="age"/>
</p>
<p>
    <span>地址：</span>
    <jsp:getProperty name="people" property="address"/>
</p>