锁与theadLocal的合并使用

package cn.com.do1.component.yopin.util;

import cn.com.do1.common.exception.BaseException;
import cn.com.do1.common.framebase.dqdp.IBaseDAO;
import cn.com.do1.component.ordermanage.order.model.Tb91OrderInfoPO;
import cn.com.do1.component.ordermanage.order.model.Tb91OrderItmPO;
import cn.com.do1.component.yopin.model.Tb91BeggingPO;

import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * Created by ao.ouyang on 2015/8/3.
 * //处理抢订单操作
 */
public class OrderSyncUtil {
    private static OrderSyncUtil orderSyncUtil;
    private final static Lock lock = new ReentrantLock(true);//公平锁
    private final static ThreadLocal<Integer> execCount= new ThreadLocal<Integer>();//执行次数

    public static OrderSyncUtil getInstance() throws Exception{
        execCount.set(5); // 初始化执行次数
        if(null == orderSyncUtil){
            try {
                lock.lock();;
                orderSyncUtil = (cn.com.do1.component.yopin.util.OrderSyncUtil) Class.forName("cn.com.do1.component.yopin.util.OrderSyncUtil").newInstance();
            }finally {
                lock.unlock();
            }
        }
        return orderSyncUtil;
    }

    public Tb91OrderItmPO gradOrder(IBaseDAO baseDAO,Map inputMap) throws  Exception,BaseException{
        Tb91OrderItmPO itmPO = null;
        if(lock.tryLock(100, TimeUnit.MILLISECONDS)){
            try {
                 itmPO = doGrad(baseDAO, inputMap);
            }finally {
                lock.unlock();
            }
        }else{
            execCount.set(execCount.get()-1);
            if(execCount.get() <= 0){
                throw new Exception("指定时间内未获取到锁，请重试！");
            }else{
                itmPO = gradOrder(baseDAO, inputMap);
            }
        }
        return itmPO;
    }

    public Tb91OrderInfoPO orderPayMent(IBaseDAO baseDAO,Map inputMap) throws Exception,BaseException{
        Tb91OrderInfoPO infoPO = null;
        if(lock.tryLock(100, TimeUnit.MILLISECONDS)){
            try {
                infoPO = doPayMent(baseDAO, inputMap);
            }finally {
                lock.unlock();
            }
        }else{
            execCount.set(execCount.get()-1);
            if(execCount.get() <= 0){
                throw new Exception("指定时间内未获取到锁，请重试！");
            }else{
                infoPO = doPayMent(baseDAO, inputMap);
            }
        }
        return infoPO;
    }

    private Tb91OrderInfoPO doPayMent(IBaseDAO baseDAO,Map inputMap) throws Exception,BaseException{
        String orderCode = inputMap.get("orderCode").toString();
        Integer amount = Integer.valueOf(inputMap.get("amount").toString());
        HashMap paramMap = new HashMap();
        paramMap.put("orderCode", orderCode);
        Tb91OrderInfoPO infoPO =(Tb91OrderInfoPO) baseDAO.searchByField(Tb91OrderInfoPO.class, "select * from tb_91_order_info where ORDER_CODE=:orderCode and ORDER_STATUS in (0,2)", paramMap, true).get(0);
        infoPO.setRemainAmount(infoPO.getRemainAmount()-amount);
        baseDAO.update(infoPO,false);
        Tb91BeggingPO beggingPO = new Tb91BeggingPO();
        beggingPO.setId(UUID.randomUUID().toString());
        beggingPO.setAmount(amount.floatValue());
        beggingPO.setOrderCode(orderCode);
        beggingPO.setGoodsDesc(infoPO.getGoodsDesc());
        beggingPO.setBeggarUsrId(infoPO.getUsrId());
        beggingPO.setCreateTime(new Date());
        beggingPO.setGiverUsrId(inputMap.get("openid").toString());
        beggingPO.setGiverUsrName(inputMap.get("nickname").toString());
        beggingPO.setBeggarUsrName("");
        baseDAO.insertData(beggingPO);
        if(infoPO.getRemainAmount() <=0){
            throw new Exception("订单已经筹满金额了！！！");
        }
        return infoPO;
    }

    private Tb91OrderItmPO doGrad(IBaseDAO baseDAO,Map inputMap)throws  Exception,BaseException{
        HashMap paramMap = new HashMap();
        paramMap.put("orderCode",inputMap.get("orderCode"));
        List<Tb91OrderItmPO> itmPOs =baseDAO.searchByField(Tb91OrderItmPO.class, "select * from tb_91_order_itm where ORDER_CODE =:orderCode", paramMap, true);
        if(itmPOs.size()<=0){
            throw new Exception("你来晚了。礼品已经被抢光了！！！。。");
        }
        for(Tb91OrderItmPO itmPO : itmPOs){
            if(inputMap.get("openid").toString().equalsIgnoreCase(itmPO.getReceiverUstId())){
                throw  new Exception("你已经获取过礼品了！！！");
            }
        }
        Tb91OrderItmPO itmPO = itmPOs.get(0);
        String openid = inputMap.get("openid").toString();
        String province = inputMap.get("province").toString();
        String city = inputMap.get("city").toString();
        String concatName= inputMap.get("concatName").toString();
        String phone = inputMap.get("phone").toString();
        String addr = inputMap.get("addr").toString();
        itmPO.setProvince(province);
        itmPO.setCity(city);
        itmPO.setShipmentAddr(addr);
        itmPO.setReceiverUstId(openid);
        itmPO.setReceiverUserName(concatName);
        itmPO.setMobilePhone(phone);
        baseDAO.update(itmPO,false);
        return itmPO;
    }
}