Mysql 批处理多条sql语句

package cn.itcast.demo;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;

import org.junit.Test;

import cn.itcast.utils.JdbcUtils;

public class Demo3 {

    /**
     * jdbc批处理的两种方式：statement 和 preparedstatement
     create table testbatch
     (
         id int primary key,
         name varchar2(20)
     );
      
     */
    
    @Test
    public void testbatch1(){
        
        Connection conn = null;
        Statement st = null;
        ResultSet rs = null;
        
        try{
            conn = JdbcUtils.getConnection();
            String sql1 = "insert into testbatch(id,name) values(1,'aaa')";
            String sql2 = "insert into testbatch(id,name) values(2,'bbb')";
            String sql3 = "delete from testbatch where id=1";
            
            st = conn.createStatement();
            st.addBatch(sql1);
            st.addBatch(sql2);
            st.addBatch(sql3);
            
            st.executeBatch(); 
            st.clearBatch();
        }catch (Exception e) {
            e.printStackTrace();
        }finally{
            JdbcUtils.release(conn, st, rs);
        }
    }
    
    @Test
    public void testbatch2(){
        
        long starttime = System.currentTimeMillis();
        Connection conn = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        
        try{
            conn = JdbcUtils.getConnection();
            String sql = "insert into testbatch(id,name) values(?,?)";
            st = conn.prepareStatement(sql);
            
            for(int i=1;i<10000008;i++){  //i=1000  2000
                st.setInt(1, i);
                st.setString(2, "aa" + i);
                st.addBatch();
                
                if(i%1000==0){
                    st.executeBatch();
                    st.clearBatch();
                }
            }
            st.executeBatch();
            
        }catch (Exception e) {
            e.printStackTrace();
        }finally{
            JdbcUtils.release(conn, st, rs);
        }
        
        long endtime = System.currentTimeMillis();
        
        System.out.println("程序花费时间：" + (endtime-starttime)/1000 + "秒！！");
    }

}