來自第三方的深度嵌套JSON回應

我從一個我無法控制的 api 得到這個深度嵌套的 JSON 回應，

獲取“generalDetails”然后在安全、地址、帳戶和移動設備下找到第一個真實值的最佳方法應該是什么？

{
    "info_code": "201",
    "info_description": "info description",
    "data": {
        "status": "here goes the status",
        "failure_data": {
            "source": "anySource",
            "details": {
                "data": {
                    "server_response": {
                        "generalDetails": {
                            "security": {
                                "isAccountLocked": "false"
                            },
                            "address": {
                                "isAddresExists": "true"
                            },
                            "account": {
                                "accountExists": "true",
                                "isValidAccount": "true"
                            },
                            "mobile": {
                                "mobileExists": "true"
                            }
                        }
                    }
                }
            }
        }
    }
}

我的請求如下所示：

@Autowired
private WebClient.Builder webClientBuilder;


String resp = webClientBuilder.build().get().uri(URL)
                    .accept(MediaType.APPLICATION_JSON)
                    .retrieve()
                    .bodyToMono(String.class).block();

uj5u.com熱心網友回復：

首先，構建模型，這里自動https://codebeautify.org/json-to-java-converter。

然后用模型讀取資料

.bodyToMono(MyData.class)

然后決定如何評估需求find the first true value under security, address, account and mobile。

“第一”是什么意思？JSON 沒有明確指示的自然順序（例如欄位“order”：2）。

注意回應的“true”、“false”是字串，而不是布林值。

一旦您擁有包含資料的模型，您可以執行以下操作：

Object firstTrue(GeneralDetails gd)  {
    // No null checks here
    if ("true".equals(gd.getSecurtity().isLockedAccount())) return gd.getSecurtity();
    if ("true".equals(gd.getAddress().isAddressExists())) return gd.getAddress();
    if ("true".equals(gd.getAccount().isAccountExists()) || "true".equals(gd.getAccount().isAccountValid())) return gd.getAccount();
    if ("true".equals(gd.getMobile().isMobileExists())) return gd.getMobile();

    return null;
}

uj5u.com熱心網友回復：

https://github.com/octomix/josson

反序列化

Josson josson = Josson.fromJsonString(
    "{"  
    "    \"info_code\": \"201\","  
    "    \"info_description\": \"info description\","  
    "    \"data\": {"  
    "        \"status\": \"here goes the status\","  
    "        \"failure_data\": {"  
    "            \"source\": \"anySource\","  
    "            \"details\": {"  
    "                \"data\": {"  
    "                    \"server_response\": {"  
    "                        \"generalDetails\": {"  
    "                            \"security\": {"  
    "                                \"isAccountLocked\": \"false\""  
    "                            },"  
    "                            \"address\": {"  
    "                                \"isAddresExists\": \"true\""  
    "                            },"  
    "                            \"account\": {"  
    "                                \"accountExists\": \"true\","  
    "                                \"isValidAccount\": \"true\""  
    "                            },"  
    "                            \"mobile\": {"  
    "                                \"mobileExists\": \"true\""  
    "                            }"  
    "                        }"  
    "                    }"  
    "                }"  
    "            }"  
    "        }"  
    "    }"  
    "}");

詢問

JsonNode node = josson.getNode(
    "data.failure_data.details.data.server_response"  
    ".generalDetails.**.mergeObjects().assort().[*]");
System.out.println(node.toPrettyString());

輸出

{
  "isAddresExists" : "true"
}

如果改變isAddresExists并accountExistsfalse

    "                        \"generalDetails\": {"  
    "                            \"security\": {"  
    "                                \"isAccountLocked\": \"false\""  
    "                            },"  
    "                            \"address\": {"  
    "                                \"isAddresExists\": \"false\""  
    "                            },"  
    "                            \"account\": {"  
    "                                \"accountExists\": \"false\","  
    "                                \"isValidAccount\": \"true\""  
    "                            },"  
    "                            \"mobile\": {"  
    "                                \"mobileExists\": \"true\""  
    "                            }"  
    "                        }"  

輸出

{
  "isValidAccount" : "true"
}

如果您只想要鍵名

String firstTureKey = josson.getString(
    "data.failure_data.details.data.server_response"  
    ".generalDetails.**.mergeObjects().assort().[*].keys().[0]");
System.out.println(firstTureKey);

輸出

isValidAccount

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