数据库满足条件的有多个值,list遍历出来却只拿到一条记录,这是什么情况 各位大神

Question

数据库查询到的值

遍历却才能到一个值

        List logsId =null;//获取ATTR表记录条件为"是"的ID
        if (isUrgencyOf==true){
            DiaDispatchingLogsAttrExample attrExample = new DiaDispatchingLogsAttrExample();
            List<DiaDispatchingLogsAttr> attrList = diaDispatchingLogsAttrMapper.selectByExample(attrExample);
            for (DiaDispatchingLogsAttr listAttr:attrList){
                if (listAttr.getAttrValue()!=null && listAttr.getAttrKey().equals("isUrgencyOf") && listAttr.getAttrValue().equals("是")){
                    logsId = Collections.singletonList(listAttr.getLogsId());
                }
            }
        }
        Map<String, List<DiaDispatchingLogs>> keywordMap = new HashMap<>(); // 按关键字将记录组合成Map对象
        Map<String, String> timeMap = new HashMap<>();
        // 查询未完成记录的关键字
        DiaDispatchingLogsExample diaDispatchingLogsExample = new DiaDispatchingLogsExample();
        DiaDispatchingLogsExample.Criteria criteria = diaDispatchingLogsExample.createCriteria();
        criteria.andDispatchAreaIdEqualTo(dispatchAreaId).andDispatchTypeEqualTo(dispatchType);
        if (isUrgencyOf) {//简化判断isUrgencyOf是否为true
            criteria.andLogIdIn(logsId);
        }

Answer 1

Collections的singletonList()方法就是返回一个不可变的，长度为1的集合。你在for循环上边打印一下attrList 的size，看看是多少