mybatis一个业务多次提交事务commit造成主键不顺序递增问题

package com.dangdang.service;

import java.text.dateformat;
import java.text.simpledateformat;
import java.util.date;
import java.util.set;
import java.util.uuid;

import org.apache.ibatis.session.sqlsession;

import com.dangdang.dao.addressdao;
import com.dangdang.dao.orderdao;
import com.dangdang.dao.orderdetalldao;
import com.dangdang.entity.buyaddress;
import com.dangdang.entity.order;
import com.dangdang.entity.orderdetall;
import com.dangdang.entity.user;
import com.dangdang.util.mybatisutil;
import com.dangdang.vo.cart;
import com.dangdang.vo.orderitem;

public class orderserviceimpl implements orderservice{
	
	//收货地址入库、订单入库、订单项表入库
	@override
	public void orderorder(buyaddress address, user user, cart cart) {
		try {
			//收货地址入库
			address.setuid(user.getid());
			address.setaddrstatus(0);
			address.setisdefault(0);
			//把user对象存放在buyaddress
			address.setuser(user);
			
			addressdao ad = (addressdao) mybatisutil.getmapper(addressdao.class);
			ad.save(address);
			
			mybatisutil.commitforce();
			mybatisutil.closesqlsession();
		} catch (exception e) {
			mybatisutil.rollback();
			e.printstacktrace();
		}
		
		//订单入库
		order order = null;
		try {
			//生成订单号onumber
			date date=new date();
			string createtime=new simpledateformat("yyyymmddhh:mm:ss").format(date);
			string onumber = createtime + uuid.randomuuid().tostring();
			//把user对象、buyaddress对象存放在order对象里
			order = new order(null, cart.gettotalprice(), user.getid(), onumber, user, 1, address.getaddrid()+1, address);
			//			  new order(orderid, totalp00rice, uid, onumber, user, orderstatus, addrid, address)
			orderdao od = (orderdao) mybatisutil.getmapper(orderdao.class);
			od.save(order);
			
			mybatisutil.commitforce();
			mybatisutil.closesqlsession();
		} catch (exception e) {
			mybatisutil.rollback();
			e.printstacktrace();
		}
		
		//订单项表入库
		orderdetalldao odd = (orderdetalldao) mybatisutil.getmapper(orderdetalldao.class);
		try {
			set keyset = cart.getcartmap().keyset();
			//遍历cartmap
			for (integer key:keyset) {
//				system.out.println(key);  
				orderitem orderitem = cart.getcartmap().get(key);
				
				orderdetall orderdetall = new orderdetall();
				
				orderdetall.setnumber(orderitem.getamount());
				orderdetall.settotal(orderitem.getsmallprice());
				orderdetall.setorderid(order.getorderid()+1);
				orderdetall.setgid(orderitem.getgoods().getgid());
				//调用dao层
				odd.save(orderdetall);
			} 	
			mybatisutil.commit();
			mybatisutil.closesqlsession();
		} catch (exception e) {
			mybatisutil.rollback();
			e.printstacktrace();
		}
		
	}
	
}

几点说明目的：希望先后地址入库、订单入库、订单项表入库，并且主键是连续的现状：可以入库，但主键不连续三张表

收货地址表d_buyaddress（主键d_addrid）、

订单表d_buyorder（主键d_orderid，外键d_addrid）、

订单项（详情条目）表d_buyorderdetall（外键d_orderid）

mybatisutil.commitforce();是sqlsession.commit(true);order.getorderid()+1是不得已 将错就错 之举：

debug时发现order.getorderid()的值 比 order表的orderid的值小1（数据库里的值比预料的自然递增数多1，如d_orderid本该到100，实际却是101）；

如果不加1，会报错：违反完整约束条件,未找到父项关键字。