jstl标签库之
2018-05-07 本文已影响0人
bfx1000
在 web 创建 c_set.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<!-- c:set单个赋值 -->
<c:set var="people" value="张三" scope="page"></c:set>
<h2><c:out value="${people}" default="无"/></h2>
<hr/>
<!-- c:set 属性赋值 -->
<jsp:useBean id="people2" class="com.java1234.model.People" scope="page"/>
<c:set property="id" target="${people2}" value="007"></c:set>
<c:set property="name" target="${people2}" value="王二小"></c:set>
<c:set property="age" target="${people2}" value="16"></c:set>
<h2>编号：${people2.id}</h2>
<h2>姓名：${people2.name}</h2>
<h2>年龄：${people2.age}</h2>
<hr/>
<!-- java 代码赋值 -->
<%
pageContext.setAttribute("people3","李四");
%>
<h2><c:out value="${people3}" default="王五"/></h2>
</body>
</html>
在 src下创建 com.java1234.model.People.java
package com.java1234.model;
public class People {
private int id;
private String name;
private int age;
public People() {
super();
}
public People(int id, String name, int age) {
this.id = id;
this.name = name;
this.age = age;
}
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;
}
}
结果
结论：
<c:set> 标签赋值：
1）单个赋值
2）jsp：useBean 赋值多个属性
