批量插入
package com.atguigu.api.preparedStatement;
import org.junit.Test;
import java.sql.*;
public class PSOtherPart {
@Test
public void testInsert() throws Exception {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection connection = DriverManager.getConnection("jdbc:mysql:///atguigu?user=root&password=123456");
String sql = "insert into t_user(account,password,nickname) values(?,?,?);";
PreparedStatement preparedStatement = connection.prepareStatement(sql);
long start = System.currentTimeMillis();
for (int i = 0; i < 10000; i++) {
preparedStatement.setObject(1,"zzz" + i);
preparedStatement.setObject(2,"11111" + i);
preparedStatement.setObject(3,"hehe" + i);
preparedStatement.executeUpdate();
}
long end = System.currentTimeMillis();
System.out.println("执行10000次数据插入消耗的时间" + (end - start));
preparedStatement.close();
connection.close();
}
@Test
public void testBatchInsert() throws Exception {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection connection = DriverManager.getConnection("jdbc:mysql:///atguigu?rewriteBatchedStatement=true","root","123456");
String sql = "insert into t_user(account,password,nickname) values(?,?,?)";
PreparedStatement preparedStatement = connection.prepareStatement(sql);
long start = System.currentTimeMillis();
for (int i = 0; i < 10000; i++) {
preparedStatement.setObject(1,"aaa" + i);
preparedStatement.setObject(2,"22222" + i);
preparedStatement.setObject(3,"haha" + i);
preparedStatement.addBatch();
}
preparedStatement.executeBatch();
long end = System.currentTimeMillis();
System.out.println("执行10000次数据插入消耗的时间" + (end - start));
preparedStatement.close();
connection.close();
}
}
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