jdbc连接池工具类

import Day01.Text03.JdbcUtils;
import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.io.IOException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

/**
 * jdbc连接池工具类
 */
public class My_JdbcUtils {
    private static DataSource da;

    private My_JdbcUtils() {
    }

    static {
        try {
            Properties properties = new Properties();
            properties.load(My_JdbcUtils.class.getClassLoader().getResourceAsStream("druid.properties"));
            da = DruidDataSourceFactory.createDataSource(properties);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    public static DataSource getDataSource() {
        return da;
    }


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

    public static void close(Statement sta, Connection con) {
        close(null, sta, con);
    }

    public static void close(ResultSet rest, Statement sta, Connection con) {
        JdbcUtils.close(rest, sta, con);
    }
}