Mysql简易图书管理系统，实现最基础的增删改查

1.创建数据库和表

首先需要创建一个数据库，例如 library，然后创建用于存储图书信息的表 book，包括 book_id、book_name、author、publisher、publish_date 等字段。建议使用主键来唯一标识每一本图书。

CREATE DATABASE library;

USE library;

CREATE TABLE book (
    book_id INT PRIMARY KEY,
    book_name VARCHAR(50),
    author VARCHAR(50),
    publisher VARCHAR(50),
    publish_date DATE
);

2.插入数据

插入图书信息数据至 book 表中。

INSERT INTO book (book_id, book_name, author, publisher, publish_date) VALUES (1, 'Java编程思想', 'Bruce Eckel', '机械工业出版社', '2002-03-01');
INSERT INTO book (book_id, book_name, author, publisher, publish_date) VALUES (2, '深入浅出MySQL', '姜承尧', '电子工业出版社', '2013-05-01');
INSERT INTO book (book_id, book_name, author, publisher, publish_date) VALUES (3, 'C++ Primer Plus', 'Stephen Prata', '人民邮电出版社', '2012-11-01');

3.开发Java程序

使用JDBC驱动连接MySQL数据库，并实现基本的增删改查等功能。

具体代码示例如下：

import java.sql.*;

public class BookManager {
    // 数据库连接参数
    private static final String DB_URL = "jdbc:mysql://localhost:3306/library";
    private static final String DB_USER = "root";
    private static final String DB_PASSWORD = "password";

    // 数据库连接对象、会话对象和结果集对象
    private Connection conn = null;
    private Statement stmt = null;
    private ResultSet rs = null;

    // 连接并初始化数据库
    public void init() {
        try {
            // 加载JDBC驱动
            Class.forName("com.mysql.jdbc.Driver");

            // 获取数据库连接
            conn = DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD);

            // 创建会话对象
            stmt = conn.createStatement();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 关闭数据库连接和会话对象
    public void close() {
        try {
            if (rs != null) rs.close();
            if (stmt != null) stmt.close();
            if (conn != null) conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 查询图书信息
    public void query() {
        try {
            String sql = "SELECT * FROM book";
            rs = stmt.executeQuery(sql);
            while (rs.next()) {
                int id = rs.getInt("book_id");
                String name = rs.getString("book_name");
                String author = rs.getString("author");
                String publisher = rs.getString("publisher");
                Date date = rs.getDate("publish_date");
                System.out.println(id + "\t" + name + "\t" + author + "\t" + publisher + "\t" + date);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 添加图书信息
    public void add(int id, String name, String author, String publisher, Date date) {
        try {
            String sql = "INSERT INTO book VALUES (" + id + ", '" + name + "', '" + author + "', '" + publisher + "', '" + date + "')";
            stmt.executeUpdate(sql);
            System.out.println("添加成功！");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 修改图书信息
    public void update(int id, String name, String author, String publisher, Date date) {
        try {
            String sql = "UPDATE book SET book_name = '" + name + "', author = '" + author + "', publisher = '" + publisher + "', publish_date = '" + date + "' WHERE book_id = " + id;
            stmt.executeUpdate(sql);
            System.out.println("修改成功！");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 删除图书信息
    public void delete(int id) {
        try {
            String sql = "DELETE FROM book WHERE book_id = " + id;
            stmt.executeUpdate(sql);
            System.out.println("删除成功！");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        BookManager bm = new BookManager();
        bm.init();
        bm.query();
        bm.add(4, "Python编程入门", "Mark Lutz", "人民邮电出版社", Date.valueOf("2014-06-01"));
        bm.update(1, "Java核心技术", "Cay S. Horstmann", "机械工业出版社", Date.valueOf("2017-05-01"));
        bm.delete(3);
        bm.query();
        bm.close();
    }
}