JSTL标签+El表达式把list集合数据展示到 JSP页面

JSP页面

<%@ page import="cn.itcast.domain.User" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.util.Date" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<html>
<head>
<title>test</title>
</head>
<body>

<%

List list = new ArrayList();
list.add(new User("张三",23,new Date()));
list.add(new User("李四",24,new Date()));
list.add(new User("王五",25,new Date()));

request.setAttribute("list",list);


%>

<table border="1" width="500" align="center">
<tr>
<th>编号</th>
<th>姓名</th>
<th>年龄</th>
<th>生日</th>
</tr>
<%--数据行--%>
<c:forEach items="${list}" var="user" varStatus="s">

<c:if test="${s.count % 2 != 0}">

<tr bgcolor="red">
<td>${s.count}</td>
<td>${user.name}</td>
<td>${user.age}</td>
<td>${user.birStr}</td>
</tr>
</c:if>

<c:if test="${s.count % 2 == 0}">

<tr bgcolor="green">
<td>${s.count}</td>
<td>${user.name}</td>
<td>${user.age}</td>
<td>${user.birStr}</td>
</tr>
</c:if>

 


</c:forEach>

</table>

 

 


</body>
</html>

javaBean

public class User {

private String name;
private int age;
private Date birthday;


public User(String name, int age, Date birthday) {
this.name = name;
this.age = age;
this.birthday = birthday;
}

public User() {
}

/**
* 逻辑视图
* @return
*/
public String getBirStr(){

if(birthday != null){
//1.格式化日期对象
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
//2.返回字符串即可
return sdf.format(birthday);

}else{
return "";
}
}


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 Date getBirthday() {
return birthday;
}

public void setBirthday(Date birthday) { this.birthday = birthday; }}

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