JBDC链接数据库

Posted 2020-10-16 亲亲的我来了

package cn.fly;

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

import org.apache.log4j.Logger;

/**
 * java方式连接和关闭数据库
 * 
 * @author ASUS
 * 
 */
public class Test1 {
    private static Logger logger = Logger.getLogger(Test1.class.getName());

    public static void main(String[] args) {
        Connection conn = null;
        // 1.加载驱动
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            logger.error(e);
        }
        // 2.建立连接
        try {
            conn = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/epet", "fly", "0000");
            System.out.println("建立连接成功~~");
        } catch (SQLException e) {
            logger.error(e);
        } finally {
            // 3.关闭连接
            if (conn != null) {
                try {
                    conn.close();
                    System.out.println("关闭连接成功~~");
                } catch (SQLException e) {
                    logger.error(e);
                }
            }
        }
    }
}