参考网址：http://blog.csdn.net/javastart/article/details/49903437

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.UUID;
import java.util.concurrent.CountDownLatch;

/**
 * Created by DowneyJr on 2017/1/12.
 * 1.这里比较一次性的插入和多线程插入，所以要用CountDownLatch进行加锁
 * 2.参考网址：http://blog.csdn.net/javastart/article/details/49903437
 * 3.可以优化成数据库的连接池就更加快速的批量操作数据了
 */
public class ThreadImport {
    private String url="jdbc:oracle:thin:@127.0.0.1:1521:XE";
    private String user="scott";
    private String password="tiger";
    public Connection getConnect(){
        Connection con = null;
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            con= DriverManager.getConnection(url, user, password);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return con;
    }
    public void multiThreadImport( final int ThreadNum){
        final CountDownLatch cdl= new CountDownLatch(ThreadNum);
        long starttime=System.currentTimeMillis();
        for(int k=1;k<=ThreadNum;k++){
            new Thread(new Runnable() {
                @Override
                public void run() {
                    Connection con=getConnect();
                    try {
                        Statement st=con.createStatement();
                        for(int i=1;i<=80000/ThreadNum;i++){
                            String uuid= UUID.randomUUID().toString();
                            st.addBatch("insert into demo_table(a,b) values('"+uuid+"','"+uuid+"')");
                            if(i%500==0){
                                st.executeBatch();
                            }
                        }
                        cdl.countDown();
                    } catch (Exception e) {
                    }finally{
                        try {
                            con.close();
                        } catch (SQLException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }).start();
        }
        try {
            cdl.await();
            long spendtime=System.currentTimeMillis()-starttime;
            System.out.println( ThreadNum+"个线程花费时间:"+spendtime);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

    public static void main(String[] args) throws Exception {
        ThreadImport ti=new ThreadImport();
        ti.multiThreadImport(1);
        ti.multiThreadImport(5);
        ti.multiThreadImport(8);
        ti.multiThreadImport(10);
        ti.multiThreadImport(20);
        ti.multiThreadImport(40);
        System.out.println("笔记本CPU数:"+Runtime.getRuntime().availableProcessors());
    }

}