how to take json data in java map or array-CodePudding

I have the following data as json and I want to take it in java

"endPoints": {
                "northAmerica": "https://ad-api.com",
                "europe": "https://ad-api-eu.com",
                "farEast": "https://ad-api-fe.com"
            }

I have tried the below code but not working.

Map<String, Object> endPoints = objectMapper.readValue(JsonParser
                    .parseString(additionalInfo().get("endPoints").toString())
                    .getAsJsonObject(), new TypeReference<Map<String, Object>>() {
                    });

anyone can help me how to do it?

CodePudding user response：

First you need to make your data is a valid json format,then you can use

CodePudding user response：

Any JSON string can be mapped to HashMap data structure as Key and Value pair.

There is an answer already in the thread.

But If you want a map of endpoints, like North America & Europe, you need to go a level deeper.

ObjectMapper from Jackson Core library will help.

First, get a HashMap of the data, then again get the endpoint from the HashMap.

String data = "{\n"  
    "    \"endPoints\":{\n"  
    "        \"northAmerica\":\"https://ad-api.com\",\n"  
    "        \"europe\":\"https://ad-api-eu.com\",\n"  
    "        \"farEast\":\"https://ad-api-fe.com\"\n"  
    "    }\n"  
    "}";
ObjectMapper mapper = new ObjectMapper();
Map<String, Object> map = mapper.readValue(data, HashMap.class);
Map<String, Object> endPointMap = (Map<String, Object>) map.get("endPoints");
System.out.println(endPointMap);

result:

{northAmerica=https://ad-api.com, europe=https://ad-api-eu.com, farEast=https://ad-api-fe.com}