Java 기술을 기반으로 한 고성능 데이터베이스 검색 실습 공유

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DatabaseConnection {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydb"; // 数据库地址
        String username = "root"; // 用户名
        String password = "password"; // 密码

        Connection connection = null;
        try {
            connection = DriverManager.getConnection(url, username, password);
            System.out.println("Connect to database successfully!");
        } catch (SQLException e) {
            System.out.println("Connect to database failed!");
            e.printStackTrace();
        } finally {
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class DatabaseSearch {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydb";
        String username = "root";
        String password = "password";

        String searchKeyword = "Java"; // 搜索关键词

        Connection connection = null;
        try {
            connection = DriverManager.getConnection(url, username, password);
            String sql = "SELECT * FROM books WHERE title LIKE ?";
            PreparedStatement statement = connection.prepareStatement(sql);
            statement.setString(1, "%" + searchKeyword + "%");
            ResultSet resultSet = statement.executeQuery();
            while (resultSet.next()) {
                String bookTitle = resultSet.getString("title");
                String bookAuthor = resultSet.getString("author");
                System.out.println("Book Title: " + bookTitle);
                System.out.println("Book Author: " + bookAuthor);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}