I'm making a REST API in Java 17 with Spring Boot 3.2.2. My API calls an external REST API. Said API, even though it does return a json, it doesn't do it in the typical way. Instead of a json…
I have a POJO like this: public class Person { public long id; public String someOtherId; public String vollName; public int alter; } I am converting the POJO to JSON using the mixin: @JsonIncludeProperties( { "id", "name", "age", "customFields" }…
I have a nested JSON structure. I want to retrieve only a particular branch of the structure and ignore rest of the objects in the json. I am not sure on the approach to achieve this. Please suggest. For example:…
Why fastjson and Jackson both judge the string ""[]"" a valid JSON? @Test public void validJSON() { String jsonString1 = ""[]""; System.out.println("fastjson: " + JSON.isValid(jsonString1)); ObjectMapper objectMapper = new ObjectMapper(); boolean flag = false; try { JsonNode jsonNode1 = objectMapper.readTree(jsonString1);…
I was previously using jackson-databind 2.8.11.3 + Java 8 to deserialise a class ApiRequest, which was used as a request body in an API call. It has worked fine all the while and the JSON string is able to be…
This is a follow up question of an answer to Jackson custom getters. The solution works and creates proper JSON. The problem is deserialization. I have an unwrapped object with some attributes not shown in JSON but instead replaced by…
I have a Spring AOP service which intercepts a lot of different third-party controllers endpoints. My service runs an endpoint, gets the result DTO, serialize DTO to json with ObjectMapper, sends json to Kafka and return the DTO outside. The…
For serialising a java object's name field in json, if I have a java class: Class Test { private String name; } When I create the Test object with a name. In scenario one, when I serialise the test object,…
I need to print everything in a JSON file using Jackson in Java. I am 90% of the way there. Here is my Json File: { "my-data": { "phone-number": "5555555555", "userId": "1234", "version": "2", "more-data": { "transaction-data": [ { "Merchant":…
Deserialisation should fail for the following POJO if the json has an additional field, as the Jackson documentation says FAIL_ON_UKNOWN_PROPERTIES is set by default. @Getter @Setter @FieldNameConstants @ToString @Builder @Document(collection = "form_layouts") @EqualsAndHashCode(callSuper = true, onlyExplicitlyIncluded = true) @Jacksonized public…