@PutMapping("/result/{checkNum}")
 public ApiReturnObject update(@PathVariable String checkNum,String dataStr) {
 //從數據庫查出duix
 Result result= resultReposity.findByCheckNum(checkNum);
 //接收的參數
 JSONObject jsonObj=JSON.parseObject(dataStr);
 JSONObject originObj=JSON.parseObject(result.getCheckresult());
 //單個替換
 //originObj.put("AGE", jsonObj.get("AGE"));
 //遍歷替換json里面的值
 for (String key:jsonObj.keySet()) {
  originObj.put(key, jsonObj.get(key));
 }
 //轉化為jsonString
 result.setCheckresult(originObj.toJSONString());
 //更新狀態(tài)
 result.setStatus("1");
 //保存
 resultReposity.save(result);
 }

JSONObject json = JSON.parseObject("{val: 123}");
System.out.println("======before=====");
System.out.println("size: " + json.size());
System.out.println("val: " + json.get("val"));
//直接put相同的key
json.put("val", 234);
System.out.println("======after======");
System.out.println("size: " + json.size());
System.out.println("val: " + json.get("val"));

for (String key:jsonObj.keySet()) {
 originObj.put(key, jsonObj.get(key));
}