数据库连接工具类 数据库连接工具类——仅仅获得连接对象 ConnDB.java

package com.util;

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

/**
 * 数据库连接工具类——仅仅获得连接对象
 *
 */
public class ConnDB {

    private static Connection conn = null;

    private static final String DRIVER_NAME = "com.mysql.jdbc.Driver";

    private static final String URL = "jdbc:mysql://localhost:3306/axt?useUnicode=true&characterEncoding=UTF-8";

    private static final String USER_NAME = "root";

    private static final String PASSWORD = "root";

    public static Connection getConn(){
        try {
            Class.forName(DRIVER_NAME);
            conn = DriverManager.getConnection(URL, USER_NAME, PASSWORD);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return conn;
    }
}