JSONObject遍历并替换部分json值

1 JSONObject jsonObject = JSONObject.parseObject(jsonstring);
2 JSONArray jsonArray = jsonObject.getJSONArray("skuList");
3 for (Object object : jsonArray) {
4     JSONObject midObject = (JSONObject) object;
5     BigDecimal price = midObject.getBigDecimal("price");
6     midObject.put("price", new BigDecimal(String.format("%.2f", price.doubleValue())));
7 }

 1 JSONObject json = JSON.parseObject("{val: 123}");
 2 System.out.println("======before=====");
 3 System.out.println("size: " + json.size());
 4 System.out.println("val:  " + json.get("val"));
 5 //直接put相同的key
 6 json.put("val", 234);
 7 System.out.println("======after======");
 8 System.out.println("size: " + json.size());
 9 System.out.println("val:  " + json.get("val"));
10 结果
11 
12 ======before=====
13 size: 1
14 val:  123
15 ======after======
16 size: 1
17 val:  234