1.
package com.zy.demo; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; import java.util.Date; import java.util.concurrent.locks.ReentrantLock; public class BatchInsert extends Thread { //定义锁对象 private final ReentrantLock lock=new ReentrantLock(); public void run() { String url = "jdbc:mysql://192.168.0.199/batch_insert"; String name = "com.mysql.jdbc.Driver"; String user = "root"; String password = "123456"; Connection conn = null; try { Class.forName(name); conn = DriverManager.getConnection(url, user, password);//获取连接 conn.setAutoCommit(false);//关闭自动提交,不然conn.commit()运行到这句会报错 } catch (ClassNotFoundException e1) { e1.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); } // 开始时间 Long begin = new Date().getTime(); // sql前缀 String prefix = "INSERT INTO stu (id,name,lang) 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 suffix = new StringBuffer(); for (int i = 1; i <= 10; i++) { // 第j次提交步长 for (int j = 1; j <= 100; j++) { // 构建SQL后缀 for (int k = 1; k <= 100; k++) { suffix.append("('a" + i + "','b" + j + "','c" + k + "'),"); } } } // 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("100万条数据插入花费时间 : " + (end - begin) / 1000 + " s"+" 插入完成"); } }
2.
package com.zy.demo; public class BatchInsertTest { public static void main(String[] args) { for (int i = 1; i <=10; i++) { new BatchInsert().start(); } } }