JavaWeb图书管理系统实现代码
时间: 2023-09-11 22:11:51 浏览: 107
很抱歉,由于JavaWeb图书管理系统是一个比较大的项目,无法在这里提供完整的代码实现。但是,我可以提供一些主要的技术和代码实现。
1. 数据库连接代码
```java
public class DBHelper {
private static final String DRIVER = "com.mysql.jdbc.Driver";
private static final String URL = "jdbc:mysql://localhost:3306/bookdb?useUnicode=true&characterEncoding=UTF-8";
private static final String USER = "root";
private static final String PASSWORD = "root";
public static Connection getConnection() {
Connection conn = null;
try {
Class.forName(DRIVER);
conn = DriverManager.getConnection(URL, USER, PASSWORD);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
public static void closeConnection(Connection conn, PreparedStatement pstmt, ResultSet rs) {
try {
if (rs != null) {
rs.close();
}
if (pstmt != null) {
pstmt.close();
}
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
```
2. JSP页面代码
```jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>图书分类</title>
</head>
<body>
<h1>图书分类</h1>
<ul>
<c:forEach var="category" items="${categoryList}">
<li><a href="bookList.jsp?categoryId=${category.id}">${category.name}</a></li>
</c:forEach>
</ul>
</body>
</html>
```
3. Servlet代码
```java
@WebServlet("/bookList")
public class BookListServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String categoryId = request.getParameter("categoryId");
List<Book> bookList = null;
if (categoryId == null) {
bookList = BookDAO.getAllBooks();
} else {
bookList = BookDAO.getBooksByCategoryId(Integer.parseInt(categoryId));
}
request.setAttribute("bookList", bookList);
request.getRequestDispatcher("bookList.jsp").forward(request, response);
}
}
```
以上是JavaWeb图书管理系统的一些主要技术和代码实现。如果需要更详细的代码实现,建议参考相关的JavaWeb开发教程或者开源项目。
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