如何在没有JsonArray的情况下解析JsonObject

Question

我有一个json，如下所示：

{"status": "ok","data": {
"0": {
"id": "1901",
"price": "0",
"userBought": "0",
"leagueName": "Germany League",
"teamOne": "Grossaspach",
"teamTwo": "Offenbacher",
"date": "05.11.2021 - 21.00",
"result": "0",
"teamOneScore": "0",
"teamTwoScore": "0",
"info": "+1.5 Goal Over",
"ratio": "1.19"
},
"1": {
"id": "1900",
"price": "0",
"userBought": "0",
"leagueName": "France League",
"teamOne": "FC Villefranche-Beaujolai",
"teamTwo": "US Avranches",
"date": "05.11.2021 - 21.00",
"result": "0",
"teamOneScore": "0",
"teamTwoScore": "0",
"info": "+1.5 Goal Over",
"ratio": "1.25"
},
"2": {
"id": "1899",
"price": "0",
"userBought": "0",
"leagueName": "Germany League",
"teamOne": "Holstein Kiel",
"teamTwo": "Dynamo Dresden",
"date": "05.11.2021 - 20.30",
"result": "0",
"teamOneScore": "0",
"teamTwoScore": "0",
"info": "+1.5 Goal Over",
"ratio": "1.20"
}}}

但我无法从"；数据"；标记，因为foreach标记没有任何json数组。

我累了，找了那么多例子。我找不到堆栈溢出的任何解决方案。有人能帮我吗？

Answer 1

我不熟悉Volley，但一个简单的方法是用大多数JSON库(例如，Jackson(将JSON字符串解密为Map，然后您可以获得字段data的内容并按如下方式遍历它：

ObjectMapper objectMapper = new ObjectMapper();
Map<String, Object> resultMap = objectMapper.readValue(jsonStr, new TypeReference<Map<String, Object>>() {});
((Map<String, Object>) resultMap.get("data")).entrySet().stream()
.map(Map.Entry::getValue)
.forEach(System.out::println);

控制台输出：

｛id=1901，price=0，userBought=0，leagueName=德国联赛，teamOne=Grossaspach，teamTwo=Offenbacher，日期=2021年11月5日-21时，结果=0，teamOneScore=0，teamTwoScore=0，信息=+1.5进球数，比率=1.19｝
｛id=1900，price=0，userBought=0，leagueName=法甲，teamOne=博若莱足球俱乐部，teamTwo=美国Avranches，日期=2021年11月5日-21时，结果=0，teamOneScore=0，teamTwoScore=0，信息=+1.5进球数，比率=1.25｝
｛id=1899，price=0，userBought=0，leagueName=德国联赛，teamOne=荷尔斯泰因基尔，teamTwo=德累斯顿迪纳摩，日期=2021年11月5日-20.30，结果=0，teamOneScore=0，teamTwoScore=0，信息=+1.5进球数，比率=1.20｝

---

您也可以使用Jayway JsonPath:获得相同的结果

Map<String, Object> resultMap = JsonPath.parse(jsonStr).read("$.data");
resultMap.entrySet().stream()
.map(Map.Entry::getValue)
.forEach(System.out::println);