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java web 增加信息课堂测试00

按照图片要求设计添加新课程界面。（0.5分）
在后台数据库中建立相应的表结构存储课程信息。（0.5分）
实现新课程添加的功能。
要求判断任课教师为王建民、刘立嘉、刘丹、王辉、杨子光五位教师的其中一位。（0.5分）
要求上课地点开头为“一教、二教、三教、基教”中的一种。（0.5分）
实现数据存储功能。（3分）

设计思想：绘制jsp界面、编写功能类、信息类、工具类、连接数据库，利用传参取到web界面的输入内容添加到数据库。

根据输入内容与要求判断的老师、地点对比判断。查重课程：从数据库中取值与键入web文本框内容对比，内容全部相同则存在课程。

源代码：

声明类

 1 public class test {
 2     private String name;
 3     private String teacher;
 4     private String area;
 5     public String getName() {
 6         return name;
 7     }
 8     public void setName(String name) {
 9         this.name = name;
10     }
11     public String getTeacher() {
12         return teacher;
13     }
14     public void setTeacher(String teacher) {
15         this.teacher = teacher;
16     }
17     public String getArea() {
18         return area;
19     }
20     public void setArea(String area) {
21         this.area = area;
22     }
23 }

View Code

接口

1 import studytest.model.test;
2 
3 public interface  Itest {
4     public void add(test test);
5 }

View Code

数据库工具类

 1 import java.sql.Connection;
 2 import java.sql.DriverManager;
 3 import java.sql.PreparedStatement;
 4 import java.sql.ResultSet;
 5 import java.sql.SQLException;
 6 
 7 public class DBUtil {
 8     public static Connection getConnection() {
 9             try {
10                 Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
11             } catch (ClassNotFoundException e1) {
12                 // TODO Auto-generated catch block
13                 e1.printStackTrace();
14             }
15 
16         String user="liu";
17         String password="980130";
18         String url="jdbc:sqlserver://localhost:1433; DatabaseName=Student";
19         Connection connection =null;
20         
21         
22         
23             
24                 try {
25                     connection=DriverManager.getConnection(url, user, password);
26                 } catch (SQLException e1) {
27                     // TODO Auto-generated catch block
28                     e1.printStackTrace();
29                 }
30             
31             
32         
33         return connection;
34         
35     }
36     //�ر���Դ
37     public static void close(PreparedStatement preparedStatement) {
38         
39              try {
40                  if( preparedStatement !=null) {
41                 preparedStatement.close();
42                  }
43             } catch (SQLException e) {
44                 // TODO Auto-generated catch block
45                 e.printStackTrace();
46             }
47     }
48     
49     public static void close(ResultSet resultSet)  {
50         
51             try {
52                 if(resultSet!= null) {
53                 resultSet.close();
54             }
55             } catch (SQLException e) {
56                 // TODO Auto-generated catch block
57                 e.printStackTrace();
58             }
59     }
60     
61     public static void close(Connection connection) {
62         // TODO Auto-generated method stub
63         
64             try {
65                 if(connection!=null) {
66                 connection.close();
67                 }
68                 } catch (SQLException e) {
69                 // TODO Auto-generated catch block
70                 e.printStackTrace();
71             }
72     }
73 }

123

 1 import java.sql.Connection;
 2 import java.sql.DriverManager;
 3 import java.sql.PreparedStatement;
 4 import java.sql.ResultSet;
 5 import java.sql.SQLException;
 6 
 7 public class DBUtil {
 8     public static Connection getConnection() {
 9             try {
10                 Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
11             } catch (ClassNotFoundException e1) {
12                 // TODO Auto-generated catch block
13                 e1.printStackTrace();
14             }
15 
16         String user="**";
17         String password="****";
18         String url="jdbc:sqlserver://localhost:1433; DatabaseName=Student";
19         Connection connection =null;
20         
21         
22         
23             
24                 try {
25                     connection=DriverManager.getConnection(url, user, password);
26                 } catch (SQLException e1) {
27                     // TODO Auto-generated catch block
28                     e1.printStackTrace();
29                 }
30             
31             
32         
33         return connection;
34         
35     }
36     //�ر���Դ
37     public static void close(PreparedStatement preparedStatement) {
38         
39              try {
40                  if( preparedStatement !=null) {
41                 preparedStatement.close();
42                  }
43             } catch (SQLException e) {
44                 // TODO Auto-generated catch block
45                 e.printStackTrace();
46             }
47     }
48     
49     public static void close(ResultSet resultSet)  {
50         
51             try {
52                 if(resultSet!= null) {
53                 resultSet.close();
54             }
55             } catch (SQLException e) {
56                 // TODO Auto-generated catch block
57                 e.printStackTrace();
58             }
59     }
60     
61     public static void close(Connection connection) {
62         // TODO Auto-generated method stub
63         
64             try {
65                 if(connection!=null) {
66                 connection.close();
67                 }
68                 } catch (SQLException e) {
69                 // TODO Auto-generated catch block
70                 e.printStackTrace();
71             }
72     }
73 }

View Code

异常处理类

 1 @SuppressWarnings("serial")
 2 public class testException extends RuntimeException {
 3     public testException() {
 4         super();
 5         // TODO Auto-generated constructor stub
 6     }
 7 
 8     public testException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
 9         super(message, cause, enableSuppression, writableStackTrace);
10         // TODO Auto-generated constructor stub
11     }
12 
13     public testException(String message, Throwable cause) {
14         super(message, cause);
15         // TODO Auto-generated constructor stub
16     }
17 
18     public testException(String message) {
19         super(message);
20         // TODO Auto-generated constructor stub
21     }
22 
23     public testException(Throwable cause) {
24         super(cause);
25         // TODO Auto-generated constructor stub
26     }
27 
28 
29 }

View Code

add类

 1 <%@page import="studytest.Util.testException"%>
 2 <%@page import="studytest.dao.testdaoimpl"%>
 3 <%@page import="studytest.model.test"%>
 4 <%@ page language="java" contentType="text/html; charset=UTF-8"
 5     pageEncoding="UTF-8"%>
 6 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 7 <html>
 8 <head>
 9 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
10 <title>添加</title>
11 </head>
12 <body>
13 <%
14 //接收客户端传递过来的参数
15     
16     String name    = request.getParameter("name");
17     name = new String(name.getBytes("ISO-8859-1"), "UTF-8");
18     String teacher= request.getParameter("teacher");
19     teacher = new String(teacher.getBytes("ISO-8859-1"), "UTF-8");
20     String area    = request.getParameter("area");
21     area= new String(area.getBytes("ISO-8859-1"), "UTF-8");
22     //String[] tea={"王建民","刘立嘉","刘丹","杨辉","杨子光"};
23     //String[] ar={"一教","二教","三教","基教"};
24     test test=new test();
25     test.setName(name);
26     test.setTeacher(teacher);
27     test.setArea(area);
28      
29     testdaoimpl testdao=new testdaoimpl();
30     
31     try{
32         
33         if((teacher.equals("王建民"))||(teacher.equals("刘立嘉"))||(teacher.equals("刘丹"))
34                 ||(teacher.equals("王辉"))||(teacher.equals("杨子光")))
35         {
36         
37             if((area.startsWith("基教"))||(area.startsWith("一教"))
38             ||(area.startsWith("二教"))||(area.startsWith("三教"))){
39                 testdao.add(test);
40                 %>
41                 <script type="text/javascript">
42                 alert("课程添加成功！！");
43                 </script>
44                 <%    
45             }
46         }
47     else{
48         %>
49         <script type="text/javascript">
50         alert("发生错误");
51         </script>
52         
53             <%
54         }
55     
56     }catch(testException e){
57         %>
58         <h2 style="color:red ; font-size:20px">发生错误 : <%=e.getMessage() %></h2>
59         <%
60         }
61         %>
62         
63 </body>
64 </html>

View Code

addinput

 1 <%@page import="java.util.Map"%>
 2 <%@page import="com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg"%>
 3 <%@ page language="java" contentType="text/html; charset=UTF-8"
 4     pageEncoding="UTF-8"%>
 5 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 6 <html>
 7 <head>
 8     <title>用户添加页面</title>
 9     <style>
10 #header{
11 background-color:#0000FF;
12 color:white;
13 text-align:left;
14 padding:3px;
15 }
16 #section1{
17 background-color:white;
18 350px;
19 text-align:center;
20 margin: 0 auto;
21 padding:10px;
22 
23 }
24 </style>
25 </head>
26 <body bgcolor="pink" >
27 <div id="header">
28 <h1>用户注册</h1>
29 </div>
30 
31 <br><br><br><br><br><br>
32 <body>
33 
34     <form action="add.jsp" method="get">
35         <table align="center" border="1" width="500">
36             <tr>
37                 <td>课程名称 : </td>
38                 <td>
39                     <input type="text" name="name" />
40                     
41                 </td>
42             </tr>
43                 <tr>
44                 <td>任课教师:</td>
45                 <td>
46                     <input type="text" name="teacher" />
47                 
48             </tr>
49             <tr>
50                 <td>上课地点:</td>
51                 <td>
52                     <input type="text" name="area" />
53         
54                 </td>
55             </tr>
56             <tr align="center">
57                 <td colspan="2">
58                     <input type="submit"  style="background:#4DFFFF" value="保存" />
59                 </td>
60             </tr>
61         </table>
62     </form>
63 </body>
64 </html>

View Code

接口调用连接数据库添加内容

 1 import java.sql.Connection;
 2 import java.sql.PreparedStatement;
 3 import java.sql.ResultSet;
 4 import java.sql.SQLException;
 5 
 6 import com.sun.xml.internal.bind.v2.runtime.Name;
 7 
 8 import studytest.Util.DBUtil;
 9 import studytest.Util.testException;
10 import studytest.model.test;
11 
12 public class testdaoimpl implements Itest{
13 
14     @SuppressWarnings("resource")
15     @Override
16     public void add(test test) {
17         // TODO Auto-generated method stub
18         
19         //获得连接对象
20                 Connection connection=DBUtil.getConnection();
21                 //准备sql语句
22                 String s="select * from test where name=?";
23                 //创建语句传输对象
24                 PreparedStatement preparedStatement= null;
25                 ResultSet resultSet =null;
26                 try {
27                     preparedStatement = connection.prepareStatement(s);
28                     preparedStatement.setString(1, test.getName());    
29                 //接收结果集
30                     resultSet =preparedStatement.executeQuery();
31                 
32                     //遍历结果集
33                     while(resultSet.next()) {
34                         if(resultSet.getString("name").equals(test.getName())&&
35                                 resultSet.getString("teacher").equals(test.getTeacher())&&
36                                     resultSet.getString("area").equals(test.getArea())) {
37                             throw new testException("课程存在 ");
38                         }
39                 }    
40                     
41                     s ="insert into test(name,teacher,area) values(?,?,?)";
42                     preparedStatement =connection.prepareStatement(s);
43                     preparedStatement.setString(1, test.getName());
44                     preparedStatement.setString(2, test.getTeacher());
45                     preparedStatement.setString(3, test.getArea());
46                     preparedStatement.executeUpdate();
47                 } catch (SQLException e) {
48                     // TODO Auto-generated catch block
49                     e.printStackTrace();
50                 }finally {
51                     DBUtil.close(resultSet);
52                     DBUtil.close(preparedStatement);
53                     DBUtil.close(connection);
54 
55                 }
56

View Code

截图：

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原文地址：https://www.cnblogs.com/liulala2017/p/7911175.html