基于JSP的网上书城数据库源代码通常涉及以下几个关键部分:
以下是一个简单的基于JSP和MySQL的网上书城数据库源代码示例:
CREATE TABLE books (
id INT AUTO_INCREMENT PRIMARY KEY,
title VARCHAR(255) NOT NULL,
author VARCHAR(255) NOT NULL,
price DECIMAL(10, 2) NOT NULL,
stock INT NOT NULL
);
CREATE TABLE users (
id INT AUTO_INCREMENT PRIMARY KEY,
username VARCHAR(255) NOT NULL UNIQUE,
password VARCHAR(255) NOT NULL,
email VARCHAR(255) NOT NULL UNIQUE
);
CREATE TABLE orders (
id INT AUTO_INCREMENT PRIMARY KEY,
user_id INT NOT NULL,
total_price DECIMAL(10, 2) NOT NULL,
order_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (user_id) REFERENCES users(id)
);
<%@ page import="java.sql.*" %>
<html>
<head>
<title>Book Store</title>
</head>
<body>
<h1>Books Available</h1>
<%
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/bookstore", "username", "password");
stmt = conn.createStatement();
rs = stmt.executeQuery("SELECT * FROM books");
%>
<table border="1">
<tr>
<th>ID</th>
<th>Title</th>
<th>Author</th>
<th>Price</th>
<th>Stock</th>
</tr>
<% while (rs.next()) { %>
<tr>
<td><%= rs.getInt("id") %></td>
<td><%= rs.getString("title") %></td>
<td><%= rs.getString("author") %></td>
<td><%= rs.getDouble("price") %></td>
<td><%= rs.getInt("stock") %></td>
</tr>
<% } %>
</table>
<%
} catch (Exception e) {
e.printStackTrace();
} finally {
if (rs != null) rs.close();
if (stmt != null) stmt.close();
if (conn != null) conn.close();
}
%>
</body>
</html>
通过以上内容,您可以了解基于JSP的网上书城数据库源代码的基础概念、优势、类型、应用场景以及常见问题的解决方法。
领取专属 10元无门槛券
手把手带您无忧上云