用java代码设计一个无图形界面的简单的图书管理系统，要求服务器端管理数据库，管理相应书籍

好的，以下是一个简单的Java图书管理系统的代码实现，使用了MySQL作为数据库：

服务器端代码：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.sql.*;

public class BookServer {
    private static final int PORT = 8888;
    private static final String DB_URL = "jdbc:mysql://localhost:3306/book";
    private static final String USER = "root";
    private static final String PASS = "123456";
    
    public static void main(String[] args) {
        try {
            // 创建ServerSocket，监听端口
            ServerSocket serverSocket = new ServerSocket(PORT);
            System.out.println("服务器启动，监听端口：" + PORT);
            
            while (true) {
                // 等待客户端连接
                Socket socket = serverSocket.accept();
                System.out.println("客户端已连接：" + socket.getInetAddress());
                
                // 创建输入输出流
                BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
                
                // 处理客户端请求
                String request = in.readLine();
                String response = "";
                if (request.startsWith("add_book")) {
                    // 添加图书
                    String[] params = request.split(",");
                    if (params.length == 5) {
                        String name = params[1];
                        String author = params[2];
                        String publisher = params[3];
                        String isbn = params[4];
                        if (addBook(name, author, publisher, isbn)) {
                            response = "添加成功";
                        } else {
                            response = "添加失败";
                        }
                    } else {
                        response = "参数错误";
                    }
                } else if (request.startsWith("delete_book")) {
                    // 删除图书
                    String[] params = request.split(",");
                    if (params.length == 2) {
                        int id = Integer.parseInt(params[1]);
                        if (deleteBook(id)) {
                            response = "删除成功";
                        } else {
                            response = "删除失败";
                        }
                    } else {
                        response = "参数错误";
                    }
                } else if (request.startsWith("query_book")) {
                    // 查询图书
                    String[] params = request.split(",");
                    if (params.length == 2) {
                        int id = Integer.parseInt(params[1]);
                        Book book = queryBook(id);
                        if (book != null) {
                            response = book.toString();
                        } else {
                            response = "查询失败";
                        }
                    } else {
                        response = "参数错误";
                    }
                } else if (request.startsWith("update_book")) {
                    // 修改图书
                    String[] params = request.split(",");
                    if (params.length == 6) {
                        int id = Integer.parseInt(params[1]);
                        String name = params[2];
                        String author = params[3];
                        String publisher = params[4];
                        String isbn = params[5];
                        if (updateBook(id, name, author, publisher, isbn)) {
                            response = "修改成功";
                        } else {
                            response = "修改失败";
                        }
                    } else {
                        response = "参数错误";
                    }
                } else {
                    response = "未知请求";
                }
                
                // 发送响应
                out.println(response);
                
                // 关闭输入输出流和Socket
                in.close();
                out.close();
                socket.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    // 添加图书
    private static boolean addBook(String name, String author, String publisher, String isbn) {
        Connection conn = null;
        PreparedStatement pstmt = null;
        try {
            conn = DriverManager.getConnection(DB_URL, USER, PASS);
            pstmt = conn.prepareStatement("INSERT INTO book_info(name, author, publisher, isbn) VALUES (?, ?, ?, ?)");
            pstmt.setString(1, name);
            pstmt.setString(2, author);
            pstmt.setString(3, publisher);
            pstmt.setString(4, isbn);
            int result = pstmt.executeUpdate();
            return result > 0;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                if (pstmt != null) pstmt.close();
                if (conn != null) conn.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
    
    // 删除图书
    private static boolean deleteBook(int id) {
        Connection conn = null;
        PreparedStatement pstmt = null;
        try {
            conn = DriverManager.getConnection(DB_URL, USER, PASS);
            pstmt = conn.prepareStatement("DELETE FROM book_info WHERE id = ?");
            pstmt.setInt(1, id);
            int result = pstmt.executeUpdate();
            return result > 0;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                if (pstmt != null) pstmt.close();
                if (conn != null) conn.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
    
    // 查询图书
    private static Book queryBook(int id) {
        Connection conn = null;
        PreparedStatement pstmt = null;
        ResultSet rs = null;
        try {
            conn = DriverManager.getConnection(DB_URL, USER, PASS);
            pstmt = conn.prepareStatement("SELECT * FROM book_info WHERE id = ?");
            pstmt.setInt(1, id);
            rs = pstmt.executeQuery();
            if (rs.next()) {
                String name = rs.getString("name");
                String author = rs.getString("author");
                String publisher = rs.getString("publisher");
                String isbn = rs.getString("isbn");
                return new Book(id, name, author, publisher, isbn);
            } else {
                return null;
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            try {
                if (rs != null) rs.close();
                if (pstmt != null) pstmt.close();
                if (conn != null) conn.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
    
    // 修改图书
    private static boolean updateBook(int id, String name, String author, String publisher, String isbn) {
        Connection conn = null;
        PreparedStatement pstmt = null;
        try {
            conn = DriverManager.getConnection(DB_URL, USER, PASS);
            pstmt = conn.prepareStatement("UPDATE book_info SET name = ?, author = ?, publisher = ?, isbn = ? WHERE id = ?");
            pstmt.setString(1, name);
            pstmt.setString(2, author);
            pstmt.setString(3, publisher);
            pstmt.setString(4, isbn);
            pstmt.setInt(5, id);
            int result = pstmt.executeUpdate();
            return result > 0;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                if (pstmt != null) pstmt.close();
                if (conn != null) conn.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

class Book {
    private int id;
    private String name;
    private String author;
    private String publisher;
    private String isbn;
    
    public Book(int id, String name, String author, String publisher, String isbn) {
        this.id = id;
        this.name = name;
        this.author = author;
        this.publisher = publisher;
        this.isbn = isbn;
    }
    
    public int getId() {
        return id;
    }
    
    public String getName() {
        return name;
    }
    
    public String getAuthor() {
        return author;
    }
    
    public String getPublisher() {
        return publisher;
    }
    
    public String getIsbn() {
        return isbn;
    }
    
    public String toString() {
        return "编号：" + id + "，书名：" + name + "，作者：" + author + "，出版社：" + publisher + "，ISBN号：" + isbn;
    }
}

客户端代码：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

public class BookClient {
    private static final String SERVER_IP = "localhost";
    private static final int SERVER_PORT = 8888;
    
    public static void main(String[] args) {
        try {
            // 创建Socket，连接服务器
            Socket socket = new Socket(SERVER_IP, SERVER_PORT);
            System.out.println("连接服务器成功：" + socket.getInetAddress());
            
            // 创建输入输出流
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
            
            // 发送请求
            out.println("query_book,1"); // 查询编号为1的图书
            
            // 接收响应
            String response = in.readLine();
            System.out.println("服务器响应：" + response);
            
            // 关闭输入输出流和Socket
            in.close();
            out.close();
            socket.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

以上代码实现了一个简单的Java图书管理系统，可以根据实际需求进行扩展和优化。