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Trying to skip one level when generating Json from wrapper class that contains two classes

So I have this domain class in a spring boot app for a REST API, that contains two subdomain objects:

public class Maximize {

   
    private Profit profit;
   
    private Stats stats;
...

The generated JSON looks like this:

{
    "profit": {
        "request_ids": [
            "id_001",
            "id_003"
        ],
        "total_profit": 88
    },
    "stats": {
        "avg_night": 10,
        "min_night": 8,
        "max_night": 12
    }
}

but I need it to look like this:

{
    "request_ids": [
        "id_001",
        "id_003"
    ],
    "total_profit": 88,
    "avg_night": 10,
    "min_night": 8,
    "max_night": 12
}

So, what I need is to void profit and stats level in json and just print its content

I tried by overriding toString() method of Maximixe class, look around Gson library but I couldn’t find an easy or simple way of doing it, any hints?

Tags:

2

Answers


  1. 0

    JSON handling in Spring Boot is not like a text editor where you can simply delete lines at your will.

    You can

    • either define a different class for the target object with the structure you want (the proper way), map source to target and then serialize the target or
    • put everything into a Map<String, Object> with a List<String> for that array. The keys of the map will become the names of the properties. Then serialize the map.
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  2. 0

    Depends on what library you are using. If you are using Jackson you can use the @JsonUnwrapped annotation:

    public class Maximize {

    @JsonUnwrapped
    private Profit profit;
    @JsonUnwrapped
    private Stats stats;
...
}
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