重复插入数据导致select one but find two的问题

 1 public Map<String,Object> getDormitoryStorageListByAgentId(int agentId) {
 2         Map<String,Object> resultMap = new HashMap<String, Object>();
 3         //forDormitoryAgent
 4         List<DormitoryStorage> storageList = storageMapper.getDormitoryStorageListByAgentId(agentId);
 5         DormitoryStock stock = stockMapper.getCurrentDormitoryStockByAgentId(agentId);
 6         List<StorageModelForDormitory> storageModelList = new ArrayList<StorageModelForDormitory>();
 7         Iterator<DormitoryStorage> storageIt = storageList.iterator();
 8         while(storageIt.hasNext()) {
 9             StorageModelForDormitory storageModel = new StorageModelForDormitory();
10             DormitoryStorage storage = storageIt.next();
11             storageModel.setStorageId(storage.getId());
12             storageModel.setStoreLeft(storage.getNumber());
13             storageModel.setSnackName(storage.getSnack().getName());
14             
15             int snackPlus = 0;
16             DormitoryStockSnack stockSnack = stockSnackMapper.getStockSnackByStorageId(stock.getId(), storage.getId());
17             if(stockSnack != null) {
18                 snackPlus = stockSnack.getNumber();
19             }
20             storageModel.setSnackPlus(snackPlus);
21             //尝试更新昨日销量
22             Date today = new Date();        //当前日期
23             Date lastStatisticsDay = storage.getStatisticsDay();
24             SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
25             Date yestoday = new Date(new Date().getTime()-24*60*60*1000);
26             Integer oneDaySale = 0;
27             //如果最后购买日期不为空,为空的话
28             if(lastStatisticsDay != null) {
29                 //如果最后购买日期是今天，从统计表拿昨天。
30                 if(dateFormat.format(lastStatisticsDay).equals(dateFormat.format(today))) {
31                     StorageSaleStatistics statistics = new StorageSaleStatistics();
32                     statistics.setDay(yestoday);
33                     statistics.setStorageId(storage.getId());
34                     oneDaySale = statisticsMapper.getStorageOneDaySale(statistics);
35                     if(oneDaySale==null) {
36                         oneDaySale = 0;
37                     }
38                 }else {
39                     //如果最后购买不是今天，加入统计表，获取昨天销量，将最后购买日期（操作日期）设置为今天，购买量为0.
40                     //初始化最后一日销量，某个商品某日的销量是多少
41                     StorageSaleStatistics statistics = new StorageSaleStatistics();
42                     statistics.setStorageId(storage.getId());
43                     statistics.setOneDaySale(storage.getOneDaySale());
44                     statistics.setDay(storage.getStatisticsDay());
45                     //向统计表插入最后一日销量
46                     statisticsMapper.addStorageSaleStatistics(statistics);
47                     if(dateFormat.format(lastStatisticsDay).equals(dateFormat.format(yestoday))) {
48                         oneDaySale = storage.getOneDaySale();
49                     }
50                     //该商品当日当前未被购买过，销量为0
51                     storage.setOneDaySale(0);
52                     //更新统计日期
53                     storage.setStatisticsDay(today);
54                     //保存商品当日销量信息
55                     storageMapper.setStorageSnackOneDaySale(storage);
56                 }
57                 
58             }
59             storageModel.setDaySale(oneDaySale);
60             //设置之前七天销量
61             List<Integer> lastSevenDaySaleList = statisticsMapper.getStorageLastSeventDaySale(storage.getId());
62             int lastSevenDaySale = 0;
63             for(Integer thisOneDaySale : lastSevenDaySaleList) {
64                 if(thisOneDaySale != null) {
65                     lastSevenDaySale = lastSevenDaySale+thisOneDaySale;
66                 }
67             }
68             storageModel.setWeekSale(lastSevenDaySale);
69             storageModelList.add(storageModel);
70         }
71         resultMap.put("storeSnacks", storageModelList);
72         resultMap.put("stockStatus", stock.getStatus());
73         return resultMap;
74     }