前端想让我给他加一个字段,根据温度判断,然后传入不同的图片,怎么在这个判断里给前端返回图片啊
@PostMapping("/xqAvgTem")
public ResponseVo xqAvgTem() {
List<HashMap> hashMaps = sensorEntireMapper.xqAvgTem();
for (int i = 0; i < hashMaps.size(); i++) {
String xq = (String) hashMaps.get(i).get("user_address");
String loc = xqInfoMapper.selectByXqName(xq);
hashMaps.get(i).put("loc", loc);
if ((Double) hashMaps.get(i).get("xqAvgTem") <= 18) {
hashMaps.get(i).put("status", "下行警报");
}
if ((Double) hashMaps.get(i).get("xqAvgTem") >= 22) {
hashMaps.get(i).put("status", "上行警报");
}
if ((Double) hashMaps.get(i).get("xqAvgTem") < 22 && (Double) hashMaps.get(i).get("xqAvgTem") > 18) {
hashMaps.get(i).put("status", "上行警报");
}
}return ResponseVo.success(hashMaps);
}