mysql连接数过高

import java.sql.Connection;
import java.sql.SQLException;
import org.apache.commons.dbcp2.BasicDataSource;

public class ConnectionPoolExample {
    private static BasicDataSource dataSource;

    static {
        dataSource = new BasicDataSource();
        dataSource.setUrl("jdbc:mysql://localhost:3306/mydatabase");
        dataSource.setUsername("username");
        dataSource.setPassword("password");
        dataSource.setInitialSize(10);
        dataSource.setMaxTotal(50);
        dataSource.setMaxIdle(20);
        dataSource.setMinIdle(5);
    }

    public static Connection getConnection() throws SQLException {
        return dataSource.getConnection();
    }

    public static void main(String[] args) {
        try (Connection conn = getConnection()) {
            // 使用连接进行数据库操作
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}