黑马程序员
JSTL–练习
需求：在request域中有一个存有User对象的List集合。需要使用jstl+el将list集合数据展示到jsp页面的表格table中，并且要求表格居中，且表格边框为1px，宽度为500px，并且其奇数行背景颜色为#bc8f8f，偶数行背景颜色为#adff2f * 代码如下：
<%@ page import="zr.web.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",22,new Date()));
list.add(new User("王五",24,new Date()));
request.setAttribute("list",list);
%>
<table border="1" align="center" width="500">
<tr>
<th>编号</th>
<th>姓名</th>
<th>年龄</th>
<th>生日</th>
</tr>
<%-- 数据行--%>
<%-- 变色 奇数行背景色为#bc8f8f 偶数行背景色为#adff2f--%>
<c:forEach items="${list}" var="user" varStatus="s">
<c:if test="${s.count % 2 == 0}">
<tr bgcolor="#adff2f">
<td>${s.count}</td>
<td>${user.name}</td>
<td>${user.age}</td>
<td>${user.birStr}</td>
</tr>
</c:if>
<c:if test="${s.count % 2 != 0}">
<tr bgcolor="#bc8f8f">
<td>${s.count}</td>
<td>${user.name}</td>
<td>${user.age}</td>
<td>${user.birStr}</td>
</tr>
</c:if>
</c:forEach>
</table>
</body>
</html>
package zr.web.domain;
import java.text.SimpleDateFormat;
import java.util.Date;
public class User {
private String name;
private int age;
private Date birthdayDate;
public User(String name, int age, Date birthdayDate) {
this.name = name;
this.age = age;
this.birthdayDate = birthdayDate;
}
public User() {
}
public void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
public void setBirthdayDate(Date birthdayDate) {
this.birthdayDate = birthdayDate;
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
public Date getBirthdayDate() {
return birthdayDate;
}
public String getBirStr(){
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return sdf.format(birthdayDate);
}
@Override
public String toString() {
return "User{" +
"name='" + name + '\'' +
", age=" + age +
", birthdayDate=" + birthdayDate +
'}';
}
}
Processed:
0.011, SQL:
8
