JavaWeb项目-图书借阅系统

1、项目需求：

图书馆管理系统，能进图书管理系统软件图书管理系统软件行图书馆管理系统能实测国民经济和企业的各种运行情况；利用过去的数据预测未来；从企业全局出发辅助企业进行管理决策；利用信息控制企业的行为；帮助企业实现其规划目标。

2.系统要求与功能设计

2.1 页面要求

（1）能够在Tomcat服务器中正确部署，并通过浏览器查看；

（2）网站页面整体风格统一；

（3）首页(登录页)要求实现不同用户登录后，进入的功能页不相同。

（4）读者功能页：有浏览图书信息、查询图书信息、借阅图书，浏览催还书目、归还图书五个功能模块。

（5）管理员功能页：有添加读者信息、添加新书信息、打印催还书目信息三个模块。

2.2功能要求：

（1）浏览图书信息：读者登录后以列表形式可以查看所有图书基本信息，包括唯一编号、书名、作者名、出版社名称信息、可借阅数量；

（2）查询图书信息：可以按照书名或作者名进行模糊检索，以列表形式查看符合条件的图书信息。

（3）借阅图书功能：读者选择查询图书相应信息，跳转到书目的详细信息界面，当可借阅数量大于零，点击借阅按钮，提示用户借阅成功，并显示归还日期（三个月），否则提示用户该书可借阅数量为0，无法借阅。

（4）浏览催还书目：读者查看个人超期的图书列表信息。

（5）归还图书功能：读者可以查看个人借阅的所有书目列表信息，选择其中一项，则跳转到书目的详细信息界面，点击归还按钮，提示用户还书成功，如果该书超期，以一天0.1元计算罚金，提示用户需要缴纳罚金。

（6）添加读者基本信息：管理员可以添加读者基本信息，读者基本信息包括学号（八位数字组成，例如20180052）、读者姓名、读者性别、所在学院组成；

（7）添加新书基本信息：管理员可以添加新书基本信息，新书基本信息包括唯一编号、书名、作者名、出版社名称，可借阅数量；

（8）打印催还书目功能：显示所有用户的超期图书信息；

（9）登陆功能：管理员、读者登陆后可以看到不同的功能页面，读者登陆后只能看到自己的相关信息，不同读者登陆后无法查看其他人的信息。（要求至少创建五个读者用户演示选课过程）

3数据库设计：

要求实现图书基本信息表、借阅基本信息表、催还基本信息表、读者基本信息表。

4、WEB发布：

要求可以实现在浏览器直接访问系统。

源代码

  1 package test2;
  2 
  3 import java.sql.*;
  4 import java.text.SimpleDateFormat;
  5 import java.util.Date;
  6 import java.util.regex.Pattern;
  7 public class Data {
  8     
  9     //连接数据库***********************************************************************
 10     public Connection getConnection()//连接数据库
 11     {
 12         try{
 13             Class.forName("com.mysql.cj.jdbc.Driver");
 14             //System.out.println("加载驱动成功");
 15         }catch(ClassNotFoundException e)
 16         {
 17             e.printStackTrace();
 18         }
 19         String user="root";
 20         String password="123456";
 21         String url = "jdbc:mysql://localhost:3306/ztest01?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf-8&autoReconnect=true";
 22         Connection con=null;
 23         try{
 24             con=DriverManager.getConnection(url,user,password);
 25             //System.out.println("数据库连接成功");
 26         }catch(SQLException e)
 27         {
 28             e.printStackTrace();
 29         }
 30         return con;
 31     }
 32     //关闭方法**********************************************************************
 33      public  void close (Connection con)
 34         {
 35             try{
 36                 if(con!=null)
 37                 {
 38                     con.close();
 39                 }
 40             }catch(SQLException e)
 41                 {
 42                     e.printStackTrace();
 43                 }
 44         }
 45      public  void close (PreparedStatement preparedStatement)
 46      {
 47             try{
 48                 if(preparedStatement!=null)
 49                 {
 50                     preparedStatement.close();
 51                 }
 52             }catch(SQLException e)
 53             {
 54                 e.printStackTrace();
 55             }
 56       }
 57      public  void close(ResultSet resultSet)
 58       {
 59             try{
 60                 if(resultSet!=null)
 61                 {
 62                     resultSet.close();
 63                 }
 64             }catch(SQLException e)
 65             {
 66                 e.printStackTrace();
 67             }
 68        }
 69      //数据库操作********************************************************************
 70         public void addreader(String id,String name,String sex,String school,String password)//add reader
 71         {
 72             Connection connection = getConnection();
 73             PreparedStatement preparedStatement=null;       
 74             try {
 75                 String sql = "insert into readers (id,name,sex,school,password) values (?,?,?,?,?)";
 76                 preparedStatement=connection.prepareStatement(sql);
 77                 preparedStatement.setString(1,id);
 78                 preparedStatement.setString(2,name);
 79                 preparedStatement.setString(3,sex);
 80                 preparedStatement.setString(4,school);
 81                 preparedStatement.setString(5,password);
 82                 preparedStatement.executeUpdate();
 83             } catch (SQLException  e) {
 84                 e.printStackTrace();
 85             }finally{
 86                 close(preparedStatement);
 87                 close(connection);
 88             }
 89         }
 90         public void addbook(String id,String name,String author,String company,String number,String nowout)//add book
 91         {
 92             Connection connection = getConnection();
 93             PreparedStatement preparedStatement=null;       
 94             try {
 95                 String sql = "insert into books (id,name,author,company,number,nowout) values (?,?,?,?,?,?)";
 96                 preparedStatement=connection.prepareStatement(sql);
 97                 preparedStatement.setString(1,id);
 98                 preparedStatement.setString(2,name);
 99                 preparedStatement.setString(3,author);
100                 preparedStatement.setString(4,company);
101                 preparedStatement.setString(5,number);
102                 preparedStatement.setString(6,nowout);
103                 preparedStatement.executeUpdate();
104             } catch (SQLException  e) {
105                 e.printStackTrace();
106             }finally{
107                 close(preparedStatement);
108                 close(connection);
109             }
110         }
111         
112         public void addborrow(String readerid,String bookid,String outnow) {
113             Connection connection = getConnection();
114             PreparedStatement preparedStatement1=null;
115             PreparedStatement preparedStatement2=null;
116             try {
117                 String sql1 = "insert into borrows (readerid,bookid,borrowtime) values (?,?,?)";
118                 preparedStatement1=connection.prepareStatement(sql1);
119                 preparedStatement1.setString(1,readerid);
120                 preparedStatement1.setString(2,bookid);
121 
122                 SimpleDateFormat sdf = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss" );
123                 Date dadate = new Date();
124                 String nowDaDate = sdf.format(dadate);
125                 Timestamp daTs = Timestamp.valueOf(nowDaDate);
126                 preparedStatement1.setTimestamp(3,daTs);
127                 
128                 String sql2 = "update books set outnow=? where id=?";
129                 preparedStatement2=connection.prepareStatement(sql2);
130                 preparedStatement2.setString(1,outnow);
131                 preparedStatement2.setString(2,bookid);
132                 
133                 preparedStatement1.executeUpdate();
134                 preparedStatement2.executeUpdate();
135             } catch (SQLException  e) {
136                 e.printStackTrace();
137             }finally{
138                 close(preparedStatement1);
139                 close(preparedStatement2);
140                 close(connection);
141             }
142         }
143         
144         public void back(String readerid,String bookid,String outnow)
145         {
146             Connection connection = getConnection();
147             PreparedStatement preparedStatement1=null;
148             PreparedStatement preparedStatement2=null;      
149             try {
150                 String sql = "delete from borrows where bookid= ? and readerid = ?";
151                 preparedStatement1=connection.prepareStatement(sql);
152                 preparedStatement1.setString(1,bookid);
153                 preparedStatement1.setString(2,readerid);
154                 
155                 String sql2 = "update books set outnow=? where id=?";
156                 preparedStatement2=connection.prepareStatement(sql2);
157                 preparedStatement2.setString(1,outnow);
158                 preparedStatement2.setString(2,bookid);
159                 
160                 preparedStatement1.executeUpdate();
161                 preparedStatement2.executeUpdate();
162             } catch (SQLException  e) {
163                 e.printStackTrace();
164             }finally{
165                 close(preparedStatement1);
166                 close(preparedStatement2);
167                 close(connection);
168             }
169         }
170         
171         
172     
173     //判断******************************************************************************
174         public boolean passwordIsRightStudents(String id,String password) { //judge password is right-Students
175             Connection connection = getConnection();
176             PreparedStatement preparedStatement=null; 
177             ResultSet rs=null;
178             try {
179                 String sql = "select * from readers";
180                 preparedStatement=connection.prepareStatement(sql);
181                 rs=preparedStatement.executeQuery();
182                 while(rs.next()){
183                     if( id.equals(rs.getObject(1))&&password.equals(rs.getObject(5)) )
184                             return true;
185                 }           
186             } catch (SQLException  e) {
187                 e.printStackTrace();
188             }finally{
189                 close(rs);
190                 close(preparedStatement);
191                 close(connection);
192             }
193             return false;
194         }
195         
196         
197         public boolean useridisIdRight(String num) {//judge userid
198             int k=0;
199             if(num.length()==8) {
200                 for(int i=0;i<8;i++) {
201                     char c=num.charAt(i);
202                     if(c=='0'||c=='1'||c=='2'||c=='3'||c=='4'||c=='5'||c=='6'||c=='7'||c=='8'||c=='9')
203                         k++;
204                 }
205                 if(k==8) 
206                     return true;
207                 else return false;
208             }
209             else return false;
210         }
211         
212         
213         public boolean studentexist(String id) { //have this student
214             Connection connection = getConnection();
215             PreparedStatement preparedStatement=null; 
216             ResultSet rs=null;
217             try {
218                 String sql = "select id from readers";
219                 preparedStatement=connection.prepareStatement(sql);
220                 rs=preparedStatement.executeQuery();
221                 while(rs.next()){
222                     if( id.equals(rs.getObject(1)) )
223                             return true;
224                 }
225             } catch (SQLException  e) {
226                 e.printStackTrace();
227             }finally{
228                 close(rs);
229                 close(preparedStatement);
230                 close(connection);
231             }
232             return false;
233         }
234         
235         public boolean bookexist(String id) { //have this book
236             Connection connection = getConnection();
237             PreparedStatement preparedStatement=null; 
238             ResultSet rs=null;
239             try {
240                 String sql = "select id from books";
241                 preparedStatement=connection.prepareStatement(sql);
242                 rs=preparedStatement.executeQuery();
243                 while(rs.next()){
244                     if( id.equals(rs.getObject(1)) )
245                             return true;
246                 }
247             } catch (SQLException  e) {
248                 e.printStackTrace();
249             }finally{
250                 close(rs);
251                 close(preparedStatement);
252                 close(connection);
253             }
254             return false;
255         }
256         public boolean bookidisIdRight(String num) {//judge bookid
257             int k=0;
258             for(int i=0;i<num.length();i++) {
259                 char c=num.charAt(i);
260                 if(c=='0'||c=='1'||c=='2'||c=='3'||c=='4'||c=='5'||c=='6'||c=='7'||c=='8'||c=='9')
261                     k++;
262             }
263             if(k==num.length()) 
264                 return true;
265             else return false;
266 
267         }
268         public boolean isNumber(String str) {//judge int
269             Pattern pattern = Pattern.compile("^[-\+]?[\d]*$");
270             return pattern.matcher(str).matches();
271         }
272         
273         
274         public boolean readerHaveBorrow(String readerid,String bookid) { //student have chosen this book
275             Connection connection = getConnection();
276             PreparedStatement preparedStatement=null; 
277             ResultSet rs=null;
278             try {
279                 String sql = "select * from borrows";
280                 preparedStatement=connection.prepareStatement(sql);
281                 rs=preparedStatement.executeQuery();
282                 while(rs.next()){
283                     if( readerid.equals(rs.getObject(2))&&bookid.equals(rs.getObject(1)) )
284                             return true;
285                 }
286             } catch (SQLException  e) {
287                 e.printStackTrace();
288             }finally{
289                 close(rs);
290                 close(preparedStatement);
291                 close(connection);
292             }
293             return false;     
294         }
295      
296 
297     public static void main(String[] args) {
298         Data a= new Data();
299         //a.addbook("00","00","00","00","00","00");
300 
301     }
302 
303 }

 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>登录</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <form action="loginjudge.jsp" method="get">
11             <br>  图书管理系统  <br>
12             <br> 用户名: <input type="text" name="id" /><br>
13             <br> 密  码: <input type="password" name="password" /><br>
14             <br>
15             <br>  
16             <input type="radio" name="usertype" value="reader" />读者
17             <input type="radio" name="usertype" value="op" />管理员
18             <br>
19             <br> <input type="submit" value="登录" />  
20                  <input type="reset" value="重置" />  
21             <br>
22 </form>
23 </body>
24 </html>

 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>管理员界面</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10     <br>
11     <br>
12     <input type="button" value="添加读者信息" onclick="location.href='opaddreader.jsp'" />
13     <input type="button" value="添加新书信息" onclick="location.href='opaddbook.jsp'" />
14     <input type="button" value="催还书目信息" onclick="location.href='opback.jsp'" />
15     <br>
16     <br>
17     <input type="button" value="退出登录" onclick="location.href='login.jsp'" />
18 </body>
19 </html>

 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>添加图书</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <form action="opaddbook2.jsp" method="get">
11     <br>
12     添加图书
13     <br>
14     <br> 图书 编号 <input type="text" name="id"  /><br>
15     <br> 书   名 <input type="text" name="name" /><br>
16     <br> 作   者 <input type="text" name="author" /><br>
17     <br> 出 版 商 <input type="text" name="company" /><br>
18     <br> 可借阅数量 <input type="text" name="number"  /><br>
19     <br>
20     <br>
21     <br><input type="submit" value="提交" /> 
22         <input type="reset" value="重置" />  <br>
23     <br> <input type="button" value="返回菜单" onclick="location.href='op.jsp'" /> <br>
24 </form>
25 </body>
26 </html>

 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 </head>
 8 <body>
 9 <jsp:useBean id="util" class="test2.Data" scope="page" />
10 <%
11 String id=(String)request.getParameter("id");
12 String name=(String)request.getParameter("name");
13 String author=(String)request.getParameter("author");
14 String company=(String)request.getParameter("company");
15 String number=(String)request.getParameter("number");
16 String nowout="0";
17 if(id==""||name==""||author==""||company==""||number=="")
18 {
19     out.print("<script language='javaScript'> alert('输入为空');window.history.back(-1);</script>");
20 }
21 else if(!util.bookidisIdRight(id)){
22     out.print("<script language='javaScript'> alert('编号由数字组成');window.history.back(-1);</script>");
23 }
24 else if(util.bookexist(id)){
25     out.print("<script language='javaScript'> alert('已存在该图书');window.history.back(-1);</script>");
26 }
27 else if(!util.isNumber(number)){
28     out.print("<script language='javaScript'> alert('可借阅数量应为整数');window.history.back(-1);</script>");
29 }
30 else{
31     util.addbook(id, name, author, company, number, nowout);
32     out.print("<script language='javaScript'> alert('添加成功');</script>");
33     response.setHeader("refresh", "0;url=opaddbook.jsp");
34 }
35 
36 %>
37 
38 </body>
39 </html>

 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>添加读者</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <form action="opaddreader2.jsp" method="get">
11     <br>
12     添加学生
13     <br>
14     <br> 学生学号 <input type="text" name="id"  /><br>
15     <br> 学生姓名 <input type="text" name="name" /><br>
16     <br> 性别 <input type="radio" name="sex" value="男" />男  
17         <input type="radio" name="sex" value="女" />女
18     <br>
19     <br> 学 院 <input type="text" name="school"  /><br>
20     <br>
21     <br>
22     <br><input type="submit" value="提交" /> 
23         <input type="reset" value="重置" />  <br>
24     <br> <input type="button" value="返回菜单" onclick="location.href='op.jsp'" /> <br>
25 </form>
26 </body>
27 </html>

 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 </head>
 8 <body>
 9 <jsp:useBean id="util" class="test2.Data" scope="page" />
10 <%
11 String id=(String)request.getParameter("id");
12 String name=(String)request.getParameter("name");
13 String sex=(String)request.getParameter("sex");
14 String school=(String)request.getParameter("school");
15 if(id==""||name==""||sex==null||school=="")
16 {
17     out.print("<script language='javaScript'> alert('输入为空');window.history.back(-1);</script>");
18 }
19 else if(!util.useridisIdRight(id)){
20     out.print("<script language='javaScript'> alert('学号由八位数字组成');window.history.back(-1);</script>");
21 }
22 else if(util.studentexist(id)){
23     out.print("<script language='javaScript'> alert('已存在该读者');window.history.back(-1);</script>");
24 }
25 else{
26     util.addreader(id, name, sex, school, id);
27     out.print("<script language='javaScript'> alert('添加成功');</script>");
28     response.setHeader("refresh", "0;url=opaddreader.jsp");
29 }
30 
31 %>
32 
33 </body>
34 </html>

 1 <%@ page language="java"  import="java.sql.*" import="java.util.Date" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>催还书目</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <jsp:useBean id="util" class="test2.Data" scope="page" />
11 <div style="text-align: center;">
12 <table border="1" style="margin: auto;">
13         <tr>
14         <td align="center" width=10%>图书编号</td>
15         <td align="center" width=10%>书籍名称</td>
16         <td align="center" width=10%>借阅日期</td>
17         <td align="center" width=10%>借阅人学号</td>
18         <td align="center" width=10%>借阅人姓名</td>
19         </tr>
20         <%
21         String id=(String)session.getAttribute("id");
22         Connection connection = util.getConnection();
23         PreparedStatement preparedStatement1=null; 
24         PreparedStatement preparedStatement2=null; 
25         PreparedStatement preparedStatement3=null;
26         ResultSet rs1=null;
27         ResultSet rs2=null;
28         ResultSet rs3=null;
29         try {
30             String sql = "select * from borrows";
31             preparedStatement1=connection.prepareStatement(sql);
32             rs1=preparedStatement1.executeQuery();
33             
34             String sql2 = "select * from books";
35             preparedStatement2=connection.prepareStatement(sql2);
36             rs2=preparedStatement2.executeQuery();
37             
38             String sql3 = "select * from readers";
39             preparedStatement3=connection.prepareStatement(sql3);
40             rs3=preparedStatement3.executeQuery();
41             
42             while(rs1.next()) {
43                 Date borrowtime = new Date(rs1.getDate(3).getTime());
44                 Date nowtime = new Date();
45                 long day=(nowtime.getTime()-borrowtime.getTime())/(24*60*60*1000);
46                 if(day > 90){
47                 %><tr><td align="center"><%=rs1.getObject(1) %></td><%
48                 while(rs2.next()) {
49                     if(rs2.getObject(1).equals(rs1.getObject(1))){
50                         %><td align="center"><%=rs2.getObject(2) %></td><%
51                     }
52                 }
53                 %>
54                 <td align="center"><%=rs1.getObject(3) %></td>
55                 <td align="center"><%=rs1.getObject(2) %></td>
56                 <%
57                 while(rs3.next()) {
58                     if(rs3.getObject(1).equals(rs1.getObject(2))){
59                         %><td align="center"><%=rs3.getObject(2) %></td><%
60                     }
61                 }
62                 %>
63                 </tr>
64                 <%
65                 }
66             }
67         } catch (SQLException  e) {
68             e.printStackTrace();
69         }finally{
70             util.close(rs3);
71             util.close(rs1);
72             util.close(rs2);
73             util.close(preparedStatement1);
74             util.close(preparedStatement2);
75             util.close(preparedStatement3);
76             util.close(connection);
77         }
78         %>
79 </table>
80 </div>
81     <br> <input type="button" value="返回菜单" onclick="location.href='op.jsp'" /> <br>
82 </body>
83 </html>

 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>读者界面</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10     <br>
11     <br>
12     <input type="button" value="浏览图书信息" onclick="location.href='readerlookbook.jsp'" />
13     <input type="button" value="查询借阅图书" onclick="location.href='readersearch.jsp'" />
14     <input type="button" value="浏览催还书目" onclick="location.href='readerneedback.jsp'" />
15     <input type="button" value="归还图书" onclick="location.href='readerback.jsp'" />
16     <br>
17     <br>
18     <input type="button" value="退出登录" onclick="location.href='login.jsp'" />
19 </body>
20 </html>

 1 <%@ page language="java"  import="java.sql.*" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>归还图书</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <jsp:useBean id="util" class="test2.Data" scope="page" />
11 <div style="text-align: center;">
12 <table border="1" style="margin: auto;">
13         <tr>
14         <td align="center" width=10%>编号</td>
15         <td align="center" width=10%>书名</td>
16         <td align="center" width=10%>作者</td>
17         <td align="center" width=10%>出版商</td>
18         <td align="center" width=10%>归还</td>
19         </tr>
20         <%
21         String readerid=(String)session.getAttribute("id");
22         Connection connection = util.getConnection();
23         PreparedStatement preparedStatement=null; 
24         ResultSet rs=null;
25         try {
26             String sql = "select * from books";
27             preparedStatement=connection.prepareStatement(sql);
28             rs=preparedStatement.executeQuery();
29             while(rs.next()){
30                 if(util.readerHaveBorrow(readerid, (String)rs.getObject(1))){
31                 %>
32                 <tr>
33                 <td align="center"><%=rs.getObject(1) %></td>
34                 <td align="center"><%=rs.getObject(2) %></td>
35                 <td align="center"><%=rs.getObject(3) %></td>
36                 <td align="center"><%=rs.getObject(4) %></td>
37                 <td align="center"> <a style="color:white" href='readerback2.jsp?id=<%=rs.getObject(1) %>&outnow=<%=rs.getObject(6) %>'>归还</a> </td>
38                 </tr>
39                 <%
40                 }
41             }
42         } catch (SQLException  e) {
43             e.printStackTrace();
44         }finally{
45             util.close(rs);
46             util.close(preparedStatement);
47             util.close(connection);
48         }
49         %>
50 </table>
51 </div>
52     <br> <input type="button" value="返回菜单" onclick="location.href='reader.jsp'" /> <br>
53 </body>
54 </html>

 1 <%@ page language="java"  import="java.sql.*" import="java.util.Date" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 </head>
 8 <body>
 9 <jsp:useBean id="util" class="test2.Data" scope="page" />
10 <%
11 String readerid=(String)session.getAttribute("id");
12 String bookid=(String)request.getParameter("id");
13 String outnow0=(String)request.getParameter("outnow");
14 String outnow= Integer.toString(Integer.parseInt(outnow0)-1);
15 long day=0;
16 Connection connection = util.getConnection();
17 PreparedStatement preparedStatement=null;
18 ResultSet rs=null;
19 try {
20     String sql = "select * from borrows";
21     preparedStatement=connection.prepareStatement(sql);
22     rs=preparedStatement.executeQuery();
23     while(rs.next()) {
24         if(readerid.equals(rs.getObject(2))&&bookid.equals(rs.getObject(1))){
25               Date borrowtime = new Date(rs.getDate(3).getTime());
26               Date nowtime = new Date();
27               day=(nowtime.getTime()-borrowtime.getTime())/(24*60*60*1000);
28         }
29     }
30 }catch (SQLException  e) {
31     e.printStackTrace();
32 }finally{
33     util.close(rs);
34     util.close(preparedStatement);
35     util.close(connection);
36 }
37 if(day<=90){
38     util.back(readerid, bookid, outnow);
39     out.print("<script language='javaScript'> alert('归还成功');</script>");
40     response.setHeader("refresh", "0;url=readerback.jsp");
41 }
42 else {
43     double money=(double)(day-90)*0.1;
44     util.back(readerid, bookid, outnow);
45     out.print("<script language='javaScript'> alert('支付成功，归还成功');</script>");
46     response.setHeader("refresh", "0;url=readerback.jsp");
47 }
48 %>
49 </body>
50 </html>

 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>借阅图书</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <jsp:useBean id="util" class="test2.Data" scope="page" />
11 <%
12 String readerid=(String)session.getAttribute("id");
13 String bookid=(String)request.getParameter("id");
14 String outnow0=(String)request.getParameter("outnow");
15 String outnow= Integer.toString(Integer.parseInt(outnow0)+1);
16 
17 if(util.readerHaveBorrow(readerid, bookid)){
18     out.print("<script language='javaScript'> alert('你已经借阅了这本书');window.history.back(-1);</script>");
19 }
20 else{
21     util.addborrow(readerid, bookid, outnow);
22     out.print("<script language='javaScript'> alert('借阅成功');</script>");
23     response.setHeader("refresh", "0;url=readersearch.jsp");
24 }
25 %>
26 </body>
27 </html>

 1 <%@ page language="java"  import="java.sql.*" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>浏览图书信息</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <jsp:useBean id="util" class="test2.Data" scope="page" />
11 <div style="text-align: center;">
12 <table border="1" style="margin: auto;">
13         <tr>
14         <td align="center" width=10%>编号</td>
15         <td align="center" width=10%>书名</td>
16         <td align="center" width=10%>作者</td>
17         <td align="center" width=10%>出版商</td>
18         <td align="center" width=10%>可借阅数量</td>
19         </tr>
20         <%
21         String userid=(String)session.getAttribute("userid");
22         Connection connection = util.getConnection();
23         PreparedStatement preparedStatement=null; 
24         ResultSet rs=null;
25         try {
26             String sql = "select * from books";
27             preparedStatement=connection.prepareStatement(sql);
28             rs=preparedStatement.executeQuery();
29             while(rs.next()){
30                 %>
31                 <tr>
32                 <td align="center"><%=rs.getObject(1) %></td>
33                 <td align="center"><%=rs.getObject(2) %></td>
34                 <td align="center"><%=rs.getObject(3) %></td>
35                 <td align="center"><%=rs.getObject(4) %></td>
36                 <td align="center"><%=rs.getObject(5) %></td>
37                 </tr>
38                 <%
39             }
40         } catch (SQLException  e) {
41             e.printStackTrace();
42         }finally{
43             util.close(rs);
44             util.close(preparedStatement);
45             util.close(connection);
46         }
47         %>
48 </table>
49 </div>
50     <br> <input type="button" value="返回菜单" onclick="location.href='reader.jsp'" /> <br>
51 </body>
52 </html>

 1 <%@ page language="java"  import="java.sql.*" import="java.util.Date" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>浏览催还书目</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <jsp:useBean id="util" class="test2.Data" scope="page" />
11 <div style="text-align: center;">
12 <table border="1" style="margin: auto;">
13         <tr>
14         <td align="center" width=10%>图书编号</td>
15         <td align="center" width=10%>书籍名称</td>
16         <td align="center" width=10%>借阅日期</td>
17         </tr>
18         <%
19         String id=(String)session.getAttribute("id");
20         Connection connection = util.getConnection();
21         PreparedStatement preparedStatement=null; 
22         PreparedStatement preparedStatement0=null; 
23         ResultSet rs1=null;
24         ResultSet rs2=null;
25         try {
26             String sql = "select * from borrows";
27             preparedStatement=connection.prepareStatement(sql);
28             rs1=preparedStatement.executeQuery();
29             
30             String sql2 = "select * from books";
31             preparedStatement0=connection.prepareStatement(sql2);
32             rs2=preparedStatement0.executeQuery();
33             while(rs1.next()) {
34                 if(id.equals((String)rs1.getObject(2))){
35                 Date borrowtime = new Date(rs1.getDate(3).getTime());
36                 Date nowtime = new Date();
37                 long day=(nowtime.getTime()-borrowtime.getTime())/(24*60*60*1000);
38                 if(day > 90){
39                 %><tr><td align="center"><%=rs1.getObject(1) %></td><%
40                 while(rs2.next()) {
41                     if(rs2.getObject(1).equals(rs1.getObject(1))){
42                         %><td align="center"><%=rs2.getObject(2) %></td><%
43                     }
44                 }
45                 %>
46                 <td align="center"><%=rs1.getObject(3) %></td>
47                 </tr>
48                 <%
49                 }
50                 }
51             }
52         } catch (SQLException  e) {
53             e.printStackTrace();
54         }finally{
55             util.close(rs1);
56             util.close(rs2);
57             util.close(preparedStatement);
58             util.close(preparedStatement0);
59             util.close(connection);
60         }
61         %>
62 </table>
63 </div>
64     <br> <input type="button" value="返回菜单" onclick="location.href='reader.jsp'" /> <br>
65 </body>
66 </html>

 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>缴费</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <jsp:useBean id="util" class="test2.Data" scope="page" />
11 
12 
13 </body>
14 </html>

 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>查询图书</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 <form action="readersearch2.jsp" method="get">
11 <br>
12 输入要查询信息的书名/作者(支持模糊查询)：
13 <br> <input type="text" name="data" /> <br>
14     <br><input type="submit" value="提交" /> 
15         <input type="reset" value="重置" />  <br>
16     <br> <input type="button" value="返回菜单" onclick="location.href='reader.jsp'" /> <br>
17 </form>
18 </body>
19 </html>

 1 <%@ page language="java" import="java.sql.*"  contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>查询结果</title>
 8 </head>
 9 <body  background="images.jpg" style="text-align:center;color:white;font-family:宋体; font-size:20px">
10 查询结果
11 <jsp:useBean id="util" class="test2.Data" scope="page" />
12 <%
13 String data=(String)request.getParameter("data");
14 if(data==""){
15     out.print("<script language='javaScript'> alert('输入为空'); window.history.back(-1); </script>");
16 }
17 else 
18 {
19     %>
20     <div style="text-align: center;">
21     <table border="1" style="margin: auto;">
22                 <tr>
23                 <td align="center" width=10%>编号</td>
24                 <td align="center" width=10%>书名</td>
25                 <td align="center" width=10%>作者</td>
26                 <td align="center" width=10%>出版商</td>
27                 <td align="center" width=10%>可借阅数量</td>
28                 <td align="center" width=10%>当前借出</td>
29                 <td align="center" width=10%>借阅</td>
30                 </tr>
31     <% 
32         int i=0;
33         Connection connection = util.getConnection();
34         PreparedStatement preparedStatement=null; 
35         ResultSet rs=null;
36         try {
37             String sql= " select * from books where name like ? or author like ? ";
38             preparedStatement=connection.prepareStatement(sql);
39             preparedStatement.setString(1,"%"+data+"%");
40             preparedStatement.setString(2,"%"+data+"%");
41             rs=preparedStatement.executeQuery();
42             while(rs.next())
43             {
44                 i++;
45                 if((int)rs.getObject(5)>(int)rs.getObject(6)){
46                 %>
47                 <tr>
48                 <td align="center"><%=rs.getObject(1) %></td>
49                 <td align="center"><%=rs.getObject(2) %></td>
50                 <td align="center"><%=rs.getObject(3) %></td>
51                 <td align="center"><%=rs.getObject(4) %></td>
52                 <td align="center"><%=rs.getObject(5) %></td>
53                 <td align="center"><%=rs.getObject(6) %></td>
54                 <td align="center"> <a style="color:white" href='readerborrow.jsp?id=<%=rs.getObject(1) %>&outnow=<%=rs.getObject(6) %>'>借阅</a> </td>
55                 </tr>
56                 <%
57                 }
58                 else{
59                     %>
60                     <tr>
61                     <td align="center"><%=rs.getObject(1) %></td>
62                     <td align="center"><%=rs.getObject(2) %></td>
63                     <td align="center"><%=rs.getObject(3) %></td>
64                     <td align="center"><%=rs.getObject(4) %></td>
65                     <td align="center"><%=rs.getObject(5) %></td>
66                     <td align="center"><%=rs.getObject(6) %></td>
67                     <td align="center">不可借阅</td>
68                     </tr>
69                     <%
70                     
71                 }
72             }
73             if(i==0){
74                 out.print("<script language='javaScript'> alert('没有查询到有关信息'); window.history.back(-1); </script>");
75             }
76         } catch (SQLException  e) {
77             e.printStackTrace();
78         }finally{
79             util.close(rs);
80             util.close(preparedStatement);
81             util.close(connection);
82         }  
83 }
84     %>
85 </table>
86 </div>
87     <br> <input type="button" value="返回" onclick="location.href='readersearch.jsp'" /> <br>
88 </body>
89 </html>

相关阅读:
Linux命令:ssh
Linux命令:sshpass
Linux命令:ls
Linux文件的时间
 Linux命令:findutils
jfrog
git
git branch
git remote
java equals 和hashcode
原文地址：https://www.cnblogs.com/a8047/p/14100505.html