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Tag: jackson

Jackson cannot parse body of a POST request

I am using Spring Boot to implement two web services, User and Book, and I am implementing the POST methods. When I send a POST request, i include the hard-coded JSON object in the HTTP Body: I am working at the same time on the two services, and while the creation of the “user” object works fine,…

Nested generic types in static method

I was trying to develop a generic method that could convert a JSON to a generic object that would have another instantiable generic object inside so I could use it as a parser in several places in my application. I had thought of the following solution, but it doesn’t work: Is there any way to be able t…

Serialize and Deserialize Java object having vavr list

I have a Java object with vavr list. When I serialize the object objectwriter.writeValueAsString(currentDossier) and print the values then in the JSON output I see, where remarks is a vavr list field inside the object. Now if I try to deserialize the same value into the object objectMapper.readValue(json, Cus…

Adding custom arguments to Jackson deserializer

I have a custom deserializer. But I want to be able to pass additional arguments. For example How can I pass in my custom parameter on the annotation? Answer You cannot add your own parameters to @JsonDeserialize, because you can’t alter Jackson’s implementation of this annotation. However, you ca…

Deserialising JSON array using RestTemplate

I’m trying to convert JSON data to a java class using Rest Template. The JSON data has this format and cannot be changed: The java class to save the data is: To receive the JSON data and deserialize i’m doing: But i’m getting this exception: I’ve done this before and it worked, but the…