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  • com.mysql.jdbc.Driver和org.gjt.mm.mysql.Driver区别

    package com.dada.conn;
    
    import java.sql.Connection;
    import java.sql.DriverManager;
    import java.sql.PreparedStatement;
    import java.sql.ResultSet;
    
    public class TestMysql {
    
        public static void main(String[] args) throws Exception {
            //实际上两种加载驱动的方式都是一样的,最后(源码里面)都是调用的com.mysql.jdbc.Driver驱动
            //之所以还存在加载org.gjt.mm.mysql.Driver驱动,原因是为了向下兼容,其实这个类里面就只是
            //返回了一个对于com.mysql.jdbc.Driver一个引用而已
            // getConnByJdbcDriver();
            getConnByOrgDriver();
            PreparedStatement psmt = conn.prepareStatement("select * from student");
            ResultSet rs = psmt.executeQuery();
            while (rs.next()) {
                System.out.println("编号:" + rs.getInt(1) + "	" + "姓名:"
                        + rs.getString(2));
            }
        }
    
        private static Connection conn;
    
        /**通过加载com.mysql.jdbc.Driver驱动类来获取连接
         * @throws Exception
         */
        public static void getConnByJdbcDriver() throws Exception {
            String url = "jdbc:mysql://localhost/dadasport?user=root&password=hdx&characterEncoding=utf-8";
            // 加载驱动
            Class clazz = Class.forName("com.mysql.jdbc.Driver");
            System.out.println("驱动名称" + clazz.getName());
            // 建立连接
            conn = DriverManager.getConnection(url);
        }
    
        /**通过加载org.gjt.mm.mysql.Driver驱动类来获取连接
         * @throws Exception
         */
        public static void getConnByOrgDriver() throws Exception {
            String url = "jdbc:mysql://localhost/dadasport?user=root&password=hdx&characterEncoding=utf-8";
            // 加载驱动
            Class clazz = Class.forName("org.gjt.mm.mysql.Driver");
            System.out.println("驱动名称" + clazz.getName());
            // 建立连接
            conn = DriverManager.getConnection(url);
        }
    
    
    }
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  • 原文地址:https://www.cnblogs.com/lllini/p/11955349.html
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