如何用idea调用mysql数据库

<dependencies>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.27</version>
    </dependency>
</dependencies>

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

String url = "jdbc:mysql://localhost:3306/your_database_name";
String username = "your_username";
String password = "your_password";

try {
    Connection connection = DriverManager.getConnection(url, username, password);
    // 连接成功后的操作
} catch (SQLException e) {
    e.printStackTrace();
}

try {
    Statement statement = connection.createStatement();
    String sql = "SELECT * FROM your_table_name";
    ResultSet resultSet = statement.executeQuery(sql);
    
    while (resultSet.next()) {
        // 处理查询结果
        String column1 = resultSet.getString("column1");
        int column2 = resultSet.getInt("column2");
        // ...
    }
    
    // 插入数据示例
    String insertSql = "INSERT INTO your_table_name (column1, column2) VALUES ('value1', 2)";
    int rowsAffected = statement.executeUpdate(insertSql);
    
    // 更新数据示例
    String updateSql = "UPDATE your_table_name SET column1 = 'new_value' WHERE column2 = 2";
    int rowsAffected = statement.executeUpdate(updateSql);
    
    // ...
    
    statement.close();
} catch (SQLException e) {
    e.printStackTrace();
}

connection.close();