javaweb网上图书商城是一个使用Java语言开发的Web应用，它能够提供在线购买图书的服务。它可以提供用户注册、登录、浏览图书、搜索图书、查看图书详情、添加图书到购物车、结算购物车中的图书、查看订单状态等功能。

javaweb网上图书商城是一个使用Java语言开发的Web应用，它能够提供在线购买图书的服务。它可以提供用户注册、登录、浏览图书、搜索图书、查看图书详情、添加图书到购物车、结算购物车中的图书、查看订单状态等功能。

以下是一个简单的javaweb网上图书商城的代码示例：

1. 建立数据库：

CREATE TABLE books (

id INTEGER PRIMARY KEY AUTO_INCREMENT,

title VARCHAR(255) NOT NULL,

author VARCHAR(255) NOT NULL,

price DECIMAL(10,2) NOT NULL

);

2. 创建Book类：

public cl Book {

private int id;

private String title;

private String author;

private double price;

public Book(int id, String title, String author, double price) {

this.id = id;

this.title = title;

this.author = author;

this.price = price;

}

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

public String getAuthor() {

return author;

}

public void setAuthor(String author) {

this.author = author;

}

public double getPrice() {

return price;

}

public void setPrice(double price) {

this.price = price;

}

}

3. 创建DAO类：

public cl BookDAO {

private Connection connection;

public BookDAO(Connection connection) {

this.connection = connection;

}

public List getAllBooks() throws SQLException {

List books = new ArrayList();

Statement stmt = connection.createStatement();

ResultSet rs = stmt.executeQuery("SELECT * FROM books");

while (rs.next()) {

int id = rs.getInt("id");

String title = rs.getString("title");

String author = rs.getString("author");

double price = rs.getDouble("price");

Book book = new Book(id, title, author, price);

books.add(book);

}

return books;

}

}

4. 创建Servlet类：

public cl BookServlet extends HttpServlet {

@Override

protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

BookDAO dao = new BookDAO(getConnection());

List books = dao.getAllBooks();

req.setAttribute("books", books);

req.getRequestDispatcher("/books.jsp").forward(req, resp);

}

}

5. 创建JSP页面：

<%@ page language="java" contentType="text/html; cht=UTF-8"

pageEncoding="UTF-8"%>

<