java web石家庄铁道大学课程管理系统

Posted 2021-01-25 mawangwang

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package kecheng

Kc.java

 1 package kecheng;
 2 
 3 public class Kc {
 4     private int id;
 5     private String classname;
 6     private String teachername;
 7     private String place;
 8     public String getClassname() {
 9         return classname;
10     }
11     public void setClassname(String classname) {
12         this.classname = classname;
13     }
14     public int getId() {
15         return id;
16     }
17     public void setId(int id) {
18         this.id = id;
19     }
20     public String getTeachername() {
21         return teachername;
22     }
23     public void setTeachername(String teachername) {
24         this.teachername = teachername;
25     }
26     public String getPlace() {
27         return place;
28     }
29     public void setPlace(String place) {
30         this.place = place;
31     }
32 
33 }

mysqlopear.java

 1 package kecheng;
 2 
 3 import java.sql.*;
 4 
 5 
 6 public class Mysqlopear {
 7     private String driverStr="com.mysql.cj.jdbc.Driver";
 8     private String connStr="jdbc:mysql://127.0.0.1:3306/db_database17?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT";
 9     private String dbusername="root";
10     private String dbpassword="123456";
11     private Connection conn=null;
12     private Statement stmt=null;
13     public Connection getCon() {
14         try {
15             Class.forName(driverStr);
16             conn=DriverManager.getConnection(connStr, dbusername, dbpassword);
17             return conn;
18         } catch (Exception e) {
19             System.out.println("数据连接失败！");
20             System.out.println(e.getMessage());
21             return null;
22         }       
23     }
24     public int executeUpdate(String s) {
25         int result=0;
26         System.out.println("更新语句："+s+"\\n");
27         try {
28             result=stmt.executeUpdate(s);            
29         }catch(Exception e) {
30             System.out.println("执行更新错误！");
31         }
32         return result;
33     }
34     
35     //查询操作
36     public ResultSet executeQuery(String s) {
37         ResultSet rs=null;
38         System.out.println("查询语句:"+s+"\\n");
39         try {
40             rs=stmt.executeQuery(s);
41             while(rs.next()) {
42                 System.out.println("课程名称："+rs.getString(1)+"  "+"教师名称："+rs.getString(2)+"  "+"教室位置："+rs.getString(3));
43             }
44         }catch(Exception e) {
45             System.out.println("执行查询错误！");
46         }
47         return rs;
48     }
49     public void close() {
50         try {
51             stmt.close();
52             conn.close();
53         }catch(Exception e) {           
54         }
55     }
56     
57 }

package service

Kcservice.java

  1 package service;
  2 
  3 import java.sql.Connection;
  4 import java.sql.PreparedStatement;
  5 import java.sql.ResultSet;
  6 import java.sql.SQLException;
  7 import java.util.ArrayList;
  8 import java.util.List;
  9 import kecheng.Kc;
 10 
 11 
 12 public class Kcservice {
 13     private Connection conn;
 14     private PreparedStatement pstmt;
 15     public Kcservice() {
 16         conn=new kecheng.Mysqlopear().getCon();
 17     }
 18     
 19     //录入部分
 20         public boolean addStu(Kc kc){
 21             try {
 22                 pstmt=conn.prepareStatement("insert into kc"
 23             +"(classname,teachername,place)"
 24                         +"values(?,?,?)");
 25                 pstmt.setString(1, kc.getClassname());
 26                 pstmt.setString(2, kc.getTeachername());
 27                 pstmt.setString(3, kc.getPlace());
 28                 pstmt.executeUpdate();
 29                 return true;
 30             } catch (SQLException e) {
 31                 e.printStackTrace();
 32                 return false;
 33             }
 34         }
 35         public Kc queryStuByID(int id) {
 36             try {
 37                 pstmt=conn.prepareStatement("select * from kc where id=?");
 38                 pstmt.setInt(1, id);
 39                 ResultSet rs=pstmt.executeQuery();
 40                 if(rs.next()) {
 41                     Kc stu=new Kc();
 42                     stu.setId(rs.getInt(1));
 43                     stu.setClassname(rs.getString(2));
 44                     stu.setTeachername(rs.getString(3));
 45                     stu.setPlace(rs.getString(4));
 46                     return stu;
 47                 }
 48                 return null;
 49             }
 50             catch(SQLException e) {
 51                 e.printStackTrace();
 52                 return null;
 53             }
 54         }
 55         public List queryAllStu() {
 56             List stus=new ArrayList();
 57             try {
 58                 pstmt=conn.prepareStatement("select * from kc");
 59                 ResultSet rs=pstmt.executeQuery();
 60                 while(rs.next()) {
 61                     Kc stu=new Kc();
 62                     stu.setId(rs.getInt(1));
 63                     stu.setClassname(rs.getString(2));
 64                     stu.setTeachername(rs.getString(3));
 65                     stu.setPlace(rs.getString(4));
 66                     stus.add(stu);                    
 67                 }
 68                 return stus;
 69             }
 70             catch(SQLException e) {
 71                 e.printStackTrace();
 72                 return null;
 73             }
 74         }
 75         public boolean updateStu(Kc kc) {
 76             try {
 77                     pstmt=conn.prepareStatement("update kc set classname=?,teachername=?,place=? where id=? ");
 78                     pstmt.setString(1, kc.getClassname());
 79                     pstmt.setString(2, kc.getTeachername());
 80                     pstmt.setString(3, kc.getPlace());
 81                     pstmt.setInt(4, kc.getId());
 82                     pstmt.executeUpdate();
 83                 return true;
 84             }catch(Exception e) {
 85                 e.printStackTrace();
 86                 return false;
 87             }
 88         }
 89         //删除部分
 90         public boolean deleteStu(int id) {
 91             try {
 92                 pstmt=conn.prepareStatement("delete from kc where id=?");
 93                 pstmt.setInt(1, id);
 94                 pstmt.executeUpdate();
 95                 return true;
 96             }catch(Exception e) {
 97                 e.printStackTrace();
 98                 return false;
 99             }
100         }
101 
102 }

框架：main.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <frameset rows="18%,*">  
10 <frame src="title.jsp">
11 <frameset cols="10%,*">
12 <frame src="main_left.jsp">
13 <frame src="main_right.jsp" name="main_right">
14 </frameset>
15 <body>
16 
17 </body>
18 </html>

左侧菜单：main_left.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 <a href="tianjia.jsp" target="main_right">录入学生信息</a><br/>
11 <a href="chaxun.jsp" target="main_right">查看学生信息</a><br/>
12 <a href="xiugai.jsp" target="main_right">修改学生信息</a><br/>
13 <a href="shanchu.jsp" target="main_right">删除学生信息</a><br/>
14 </body>
15 </html>

右侧界面：main_right.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 
11 </body>
12 </html>

标题：title.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>石家庄铁道大学课程信息管理系统</title>
 8 
 9 </head>
10 <body>
11 <center>
12 <h1>石家庄铁道大学课程信息管理系统</h1>
13 </center>
14 </body>
15 </html>

添加新课程：tianjia.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>添加新课程页</title>
 8 </head>
 9 <body>
10 <h1 style=color:red>添加新课程</h1>
11 <form  action="tj_result.jsp"method="post">
12 <table>
13 
14 <tr>
15 <td>课程名称:</td>
16 <td><input type="text"name="classname"></td>
17 </tr>
18 <tr>
19 <td>任课教师:</td>
20 <td><input type="text"name="teachername"></td>
21 </tr>
22 <tr>
23 <td>上课地点:</td>
24 <td><input type="text"name="place"></td>
25 </tr>
26 </table>
27 <br>
28 <input type="submit" value="保存">
29 </form>
30 </body>
31 </html>

添加处理：tj_result.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>添加处理</title>
 8 </head>
 9 <body>
10 <% request.setCharacterEncoding("utf-8"); %>
11 <jsp:useBean id="kc" class="kecheng.Kc" ></jsp:useBean>
12 <jsp:useBean id="kcservice" class="service.Kcservice"></jsp:useBean>
13 <jsp:setProperty property="*" name="kc"/>
14 <%
15 if(!(kc.getTeachername().equals("王建民")||kc.getTeachername().equals("刘丹")
16         ||kc.getTeachername().equals("刘立嘉")||kc.getTeachername().equals("王辉")
17         ||kc.getTeachername().equals("杨子光"))){
18     out.print("<script language=\'javascript\'> alert(\'教师姓名非法\');</script>");
19     response.setHeader("refresh", "0;url=tianjia.jsp");
20 }
21 else{
22 if(kcservice.addStu(kc))
23     out.print("success");
24 else
25     out.print("error");}
26 %>
27 </body>
28 </html>

删除：shanchu.jsp

 1 <%@page import="kecheng.Kc"%>
 2 <%@page import="java.util.Iterator"%>
 3 <%@page import="java.util.List"%>
 4 <%@ page language="java" contentType="text/html; charset=UTF-8"
 5     pageEncoding="UTF-8"%>
 6 <!DOCTYPE html>
 7 <html>
 8 <head>
 9 <meta charset="UTF-8">
10 <title>删除课程</title>
11 </head>
12 <body>
13 <jsp:useBean id="stuSer" class="service.Kcservice"></jsp:useBean>
14 <%
15 List stus=stuSer.queryAllStu();
16 //out.print(stus.size());
17 Iterator iter=stus.iterator();
18 %>
19 <table>
20 <tr> <td>ID  </td> <td>课程姓名    </td> <td>教师姓名</td><td>上课地点</td>  </tr>
21 
22 <%
23 int i=0;
24 while(iter.hasNext())
25 {
26     Kc kc=(Kc)iter.next();
27     %>
28     <tr <%if(i%2==0){ %>bgcolor="#F0F8FF"<%} %>>
29     <td> <%=kc.getId() %></td>
30     <td> <%=kc.getClassname() %></td>
31     <td> <%=kc.getTeachername()%></td>
32     <td> <%=kc.getPlace()%></td>
33     <td> <a href="sc_result.jsp?id=<%=kc.getId() %>">删除</a></td>
34     </tr>
35     <%
36     i++;
37 }
38 %>
39 </table>
40 </body>
41 </html>

删除处理：sc_result.jsp

 1 <%@page import="kecheng.Kc"%>
 2 <%@ page language="java" contentType="text/html; charset=UTF-8"
 3     pageEncoding="UTF-8"%>
 4 <!DOCTYPE html>
 5 <html>
 6 <head>
 7 <meta charset="UTF-8">
 8 <title>删除处理</title>
 9 </head>
10 <body>
11 <jsp:useBean id="stuSer" class="service.Kcservice"></jsp:useBean>
12 <%
13 int id=Integer.parseInt(request.getParameter("id"));
14 Kc stu=stuSer.queryStuByID(id);
15 if(stuSer.deleteStu(id))
16     out.print("success");
17 else
18     out.print("false");
19 %>
20 </body>
21 </html>

修改：xuigai.jsp

 1 <%@page import="kecheng.Kc"%>
 2 <%@page import="java.util.Iterator"%>
 3 <%@page import="java.util.List"%>
 4 <%@ page language="java" contentType="text/html; charset=UTF-8"
 5     pageEncoding="UTF-8"%>
 6 <!DOCTYPE html>
 7 <html>
 8 <head>
 9 <meta charset="UTF-8">
10 <title>修改</title>
11 </head>
12 <body>
13 <jsp:useBean id="stuSer" class="service.Kcservice"></jsp:useBean>
14 <%
15 List stus=stuSer.queryAllStu();
16 Iterator iter=stus.iterator();
17 %>
18 <table>
19 <tr> <td>ID  </td> <td>课程姓名    </td> <td>教师姓名</td><td>上课地点</td>  </tr>
20 
21 <%
22 int i=0;
23 while(iter.hasNext())
24 {
25     Kc kc=(Kc)iter.next();
26     %>
27     <tr <%if(i%2==0){ %>bgcolor="#F0F8FF"<%} %>>
28     <td> <%=kc.getId() %></td>
29     <td> <%=kc.getClassname() %></td>
30     <td> <%=kc.getTeachername()%></td>
31     <td> <%=kc.getPlace()%></td>
32     <td> <a href="修改处理.jsp?id=<%=kc.getId() %>">修改</a></td>
33     </tr>
34     <%
35     i++;
36 }
37 %>
38 </table>
39 </body>
40 </html>

修改处理：xg_result.jsp

 1 <%@page import="kecheng.Kc"%>
 2 <%@ page language="java" contentType="text/html; charset=UTF-8"
 3     pageEncoding="UTF-8"%>
 4 <!DOCTYPE html>
 5 <html>
 6 <head>
 7 <meta charset="UTF-8">
 8 <title>修改处理</title>
 9 </head>
10 <body>
11 <jsp:useBean id="stuSer" class="service.Kcservice"></jsp:useBean>
12 <%
13 int id=Integer.parseInt(request.getParameter("id"));
14 Kc stu=stuSer.queryStuByID(id);
15 %>
16 <form action="xg_0.jsp" method="post">
17 <table>
18 <tr><td colspan="2">修改学生信息</td></tr>
19 <tr>    
20       <td><input type="hidden" name="id" value="<%=stu.getId()%>"/></td>
21 </tr>
22 <tr>
23       <td>课程名称</td>
24       <td><input type="text" name="classname" value="<%=stu.getClassname()%>"/></td>
25 </tr>
26 <tr>
27      <td>教师姓名</td>
28      <td><input type="text" name="teachername" value="<%=stu.getTeachername()%>"/></td>
29 </tr>
30 <tr>
31       <td>上课地点</td>
32      <td><input type="text" name="place" value="<%=stu.getPlace()%>"/></td>
33 </tr>
34 <tr>
35 <td align="center" colspan="2">
36 <input type="submit" value="提交">
37 <input type="reset" value="重置">
38 
39 </tr>
40 </table>
41 </form>
42 </body>
43 </html>

修改结果：xg_0.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 <% request.setCharacterEncoding("utf-8"); %>
11 <jsp:useBean id="kc" class="kecheng.Kc" ></jsp:useBean>
12 <jsp:useBean id="kcservice" class="service.Kcservice"></jsp:useBean>
13 <jsp:setProperty property="*" name="kc"/>
14 <%
15 if(kcservice.updateStu(kc))
16     out.print("success");
17 else
18     out.print("error");
19 %>
20 </body>
21 </html>

查询：chaxun.jsp

 1 <%@page import="kecheng.Kc"%>
 2 <%@page import="java.util.Iterator"%>
 3 <%@page import="java.util.List"%>
 4 <%@ page language="java" contentType="text/html; charset=UTF-8"
 5     pageEncoding="UTF-8"%>
 6 <!DOCTYPE html>
 7 <html>
 8 <head>
 9 <meta charset="UTF-8">
10 <title>查询</title>
11 </head>
12 <body>
13 <jsp:useBean id="stuSer" class="service.Kcservice"></jsp:useBean>
14 <%
15 List stus=stuSer.queryAllStu();
16 //out.print(stus.size());
17 Iterator iter=stus.iterator();
18 %>
19 <table>
20 <tr> <td>ID  </td> <td>课程姓名    </td> <td>教师姓名</td><td>上课地点</td>  </tr>
21 
22 <%
23 int i=0;
24 while(iter.hasNext())
25 {
26     Kc kc=(Kc)iter.next();
27     %>
28     <tr <%if(i%2==0){ %>bgcolor="#F0F8FF"<%} %>>
29     <td> <%=kc.getId() %></td>
30     <td> <%=kc.getClassname() %></td>
31     <td> <%=kc.getTeachername()%></td>
32     <td> <%=kc.getPlace()%></td>
33     </tr>
34     <%
35     i++;
36 }
37 %>
38 </table>
39 </body>
40 </html>