原来的代码：
1 for (MeasureResult measureResults : page.getContent()) { 2 MeasureResultsPageVo measureResultsPageVo = new MeasureResultsPageVo(); 3 4 BeanUtils.copyProperties(measureResults, measureResultsPageVo); 5 measureResultsPageVo.setCreateTime(measureResults.getCreateTime().getTime()); 6 patient = patientInfoService.getPatientInfo(measureResults.getPatientId()); 7 8 String path = CommUtil.getURL(request); 9 measureResultsPageVo.setUrl(CommUtil.getHeadPhoto(path, patient.getPhoto())); 10 measureResultsPageVo.setName(measureResults.getUserName()); 11 measureResultsPageVo.setState(measureResults.getConditionState()); 12 measureResultsPageVo.setDegree(measureResults.getSideEffectsCondition()); 13 measureResultsPageVo.setCreateTime(measureResults.getDate().getTime()); 14 15 measureResultsPageVoList.add(measureResultsPageVo); 16 }
可以在循环外就确定的有：
一、 String path = CommUtil.getURL(request);因为request是整个方法的入参，无论循环多少次都是一样的结果，为何不放循环外呢！
二、 patient = patientInfoService.getPatientInfo(measureResults.getPatientId()); 因为measureResults本来就是通过patientId查询得来的，每条数据的patientId都是一致的，也应该放在循环外。而且方法内循环前就已经获取了patient对象值，故可以改为：
1 String path = CommUtil.getURL(request); 2 String url = CommUtil.getHeadPhoto(path, patient.getPhoto()); 3 for (MeasureResult measureResults : page.getContent()) { 4 MeasureResultsPageVo measureResultsPageVo = new MeasureResultsPageVo(); 5 6 BeanUtils.copyProperties(measureResults, measureResultsPageVo); 7 measureResultsPageVo.setCreateTime(measureResults.getCreateTime().getTime()); 8 9 measureResultsPageVo.setUrl(url); 10 measureResultsPageVo.setName(measureResults.getUserName()); 11 measureResultsPageVo.setState(measureResults.getConditionState()); 12 measureResultsPageVo.setDegree(measureResults.getSideEffectsCondition()); 13 measureResultsPageVo.setCreateTime(measureResults.getDate().getTime()); 14 15 measureResultsPageVoList.add(measureResultsPageVo); 16 }