千万条数据批量插入数据库表

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Date;

/**
 * @Author BlueFire
 * @Date 2020/4/17 -22:13
 */
public class InsertTest {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        final String url = "jdbc:mysql://127.0.0.1:3306/mooding?autoReconnect=true&useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai";
        final String name = "com.mysql.jdbc.Driver";
        final String user = "root";
        final String password = "123456";
        Connection conn = null;
        Class.forName(name); //指定连接类型
        conn = DriverManager.getConnection(url, user, password); //获取连接
        if (conn != null) {
            System.out.println("获取连接成功");
            insert(conn);//批量插入数据
        } else {
            System.out.println("获取连接失败");
        }

    }

    public static void insert(Connection conn) {
        // 开始时间
        Long begin = new Date().getTime();
        // sql前缀
        String prefix = "INSERT INTO t_users (id,t_name,t_password,sex,description,pic_url,school_name,regist_date,remark) VALUES ";
        try {
            // 保存sql后缀
            StringBuffer suffix = new StringBuffer();
            // 设置事务为非自动提交
            conn.setAutoCommit(false);
            // 比起st，pst会更好些
            PreparedStatement pst = (PreparedStatement) conn.prepareStatement("");
            //准备执行语句
            // 外层循环，总提交事务次数
            for (int i = 1; i <= 1000; i++) {
                suffix = new StringBuffer();
                // 第j次提交步长
                for (int j = 1; j <= 10000; j++) {
                    // 构建SQL后缀
                    suffix.append("(‘" + System.currentTimeMillis()* j + "‘,‘" + i * j + "‘,‘123456‘" + ",‘男‘" + ",‘教师‘" + ",‘www.bbk.com‘" + ",‘XX大学‘" + ",‘" + "2016-08-12 14:43:26" + "‘,‘备注‘" + "),");
                }
                // 构建完整SQL
                String sql = prefix + suffix.substring(0, suffix.length() - 1);
                // 添加执行SQL
                pst.addBatch(sql);
                // 执行操作
                pst.executeBatch();
                // 提交事务
                conn.commit();
                // 清空上一次添加的数据
                suffix = new StringBuffer();
            }
            // 头等连接
            pst.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        // 结束时间
        Long end = new Date().getTime();
        // 耗时
        System.out.println("1000万条数据插入花费时间 : " + (end - begin) / 1000 + " s");
        System.out.println("插入完成");
    }
}