mysql数据库连接使用

SET GLOBAL wait_timeout = 3600; -- 增加超时时间

// 使用连接池管理连接
DataSource dataSource = new BasicDataSource();
dataSource.setUrl("jdbc:mysql://localhost:3306/mydb");
dataSource.setUsername("user");
dataSource.setPassword("password");
dataSource.setMaxTotal(100); // 设置最大连接数

-- 启用SSL连接
GRANT ALL PRIVILEGES ON mydb.* TO 'user'@'localhost' REQUIRE SSL;

-- 创建索引
CREATE INDEX idx_name ON mytable(name);

import java.sql.*;

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

        try (Connection conn = DriverManager.getConnection(url, user, password);
             Statement stmt = conn.createStatement();
             ResultSet rs = stmt.executeQuery("SELECT * FROM mytable")) {

            while (rs.next()) {
                System.out.println(rs.getString("columnName"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}