第二章上机指导

浅浅的花香味﹌ 2024-04-01 11:03 55阅读 0赞

编写一个JSP程序实现手表的功能，显示当前时间（时：分：秒），并不停地自动刷新时间。

<%@ page language="java" import="java.util.\*" pageEncoding="UTF-8"%>  
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  
<html>  
<head>  
<title>实时刷新当前时间</title>  
<meta http-equiv="pragma" content="no-cache">  
<meta http-equiv="cache-control" content="no-cache">  
<meta http-equiv="expires" content="0">  
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">  
<meta http-equiv="description" content="This is my page">  
<meta http-equiv="refresh" content="1">

</head>  
  
<body>  
<%  
Date time = new Date();  
int hour = time.getHours();  
int min=time.getMinutes();  
int second = time.getSeconds();  
%>  
<h2>当前时间是： <%=hour%>:<%=min%>:<%=second%></h2>  
</body>  
</html>

编写一个JAVA类和一个JSP页面，把下列信息封装到3个Student对象里，再把每个对象放到一个ArrayList对象里，再利用ArrayList对象在JSP页面的表格中显示所下表所示的信息

![687b623290e844079a5d15668cf076fd.png][]

JSP页面

<%@ page language="java" import="java.util.\*,com.ch2.Student" pageEncoding="UTF-8"%>  
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  
<html>  
<head>  
<title>学生信息显示</title>  
<meta http-equiv="pragma" content="no-cache">  
<meta http-equiv="cache-control" content="no-cache">  
<meta http-equiv="expires" content="0">  
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">  
<meta http-equiv="description" content="This is my page">  
</head>  
  
<body>  
<table border="1" width="80%" align="center">  
<tr>  
<th>学号</th>  
<th>姓名</th>  
<th>性别</th>  
<th>班级</th>  
<th>成绩</th>  
</tr>  
<%  
Student stu1= new Student("001","李白","男","01",723.0);  
Student stu2= new Student("002","孟浩然","男","02",689.0);  
Student stu3= new Student("003","杨玉环","女","03",600.0);  
ArrayList arr = new ArrayList();  
arr.add(stu1);  
arr.add(stu2);  
arr.add(stu3);  
for(int i=0;i<arr.size();i++)\{  
Student stu =(Student)arr.get(i);  
%>  
<tr>  
<td><%=stu.getSno()%></td>  
<td><%=stu.getSname()%></td>  
<td><%=stu.getSex()%></td>  
<td><%=stu.getClasses()%></td>  
<td><%=stu.getScore()%></td>  
</tr>  
<%\} %>  
</table>  
</body>  
</html>

java

package ch2;

public class Student \{  
private String id;  
private String name;  
private String sex;  
private String classes;  
private double grade;  
  
public Student()  
\{  
  
\}  
  
public String getId() \{  
return id;  
\}  
public void setId(String id) \{  
this.id = id;  
\}  
public String getName() \{  
return name;  
\}  
public void setName(String name) \{  
this.name = name;  
\}  
public String getSex() \{  
return sex;  
\}  
public void setSex(String sex) \{  
this.sex = sex;  
\}  
public String getClasses() \{  
return classes;  
\}  
public void setClasses(String classes) \{  
this.classes = classes;  
\}  
public double getGrade() \{  
return grade;  
\}  
public void setGrade(double grade) \{  
this.grade = grade;  
\}  
  
  
  
\}

编写一个JSP程序，使用JSP Scriptlet显示网页上的不同颜色的颜色条，暂显示如下颜色的颜色条：绿色、蓝绿色、黑色、红色、黄色及粉红。（对应的颜色为：Green、Cyan、Black、Red、Yellow、Pink）

<%@ page language="java" import="java.util.\*" pageEncoding="UTF-8"%>  
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  
<html>  
<head>  
<title>彩色颜色条纹显示</title>  
<meta http-equiv="pragma" content="no-cache">  
<meta http-equiv="cache-control" content="no-cache">  
<meta http-equiv="expires" content="0">  
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">  
<meta http-equiv="description" content="This is my page">  
</head>  
  
<body>  
<%  
String\[\] colors=\{"Green","Cyan","Black","Red","Yellow","Pink"\};  
for(int i=0;i<colors.length;i++)  
\{  
%>  
<hr color="<%=colors\[i\] %>" ></hr>  
<% \}%>  
</body>  
</html>

[687b623290e844079a5d15668cf076fd.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/01/05bdd0ba7daa4d3992d58de6766b1eed.png