Jackson: why doesn't annotating BigDecimal fields with @JsonFormat(shape=JsonFormat.Shape.STRING) work?

Question

I have the following class that has to be serialized:

@JsonIgnoreProperties(ignoreUnknown = true)
public class CampaignCurrentData {
    private static final int FRAC_SPENT_SCALE = 6;

    //TBD: transfer campaign ID to long in proto and here
    private Long campaignId;
    private Long budgetId;
    @JsonFormat(shape=JsonFormat.Shape.STRING)
    private BigDecimal amountSpent;
    @JsonFormat(shape=JsonFormat.Shape.STRING)
    private BigDecimal dailyBudget;
    @JsonFormat(shape=JsonFormat.Shape.STRING)
    private BigDecimal fracSpent;
    private Set<String> countriesSet;
    private boolean isCampaignCbs;
}

Since it contains BigDecimal fields, I added the annotation

@JsonFormat(shape=JsonFormat.Shape.STRING)

Unfortunately, it doesn't work and I still get the error:

###UncheckedExecutionException: com.fasterxml.jackson.databind.JsonMappingException: N/A at [Source: (byte[])"{"campaignIdToFactorComputationData":{"1032633420":{"pacingFactor":0.001,"pidError":-0.6111111111111112,"pidIntegral":0.001,"selectedCountryCode":"IL","targetCappingHourExcluded":18,"startingHourIncluded":0,"selectedMarketHistoryDataForCampaign":{"countryCode":"IL","hourToExpectedEngagePaidListings":{"1 0":10.0,"0 0":10.0,"23 0":10.0,"22 0":10.0,"21 0":10.0,"20 0":10.0,"19 0":10.0,"18 0":10.0,"17 0":10.0,"16 0":10.0,"15 0":10.0,"14 0":10.0,"13 0":10.0,"12 0":10.0,"11 0":10.0,"10 0":10.0,"9 0":10"[truncated 528 bytes]; line: 1, column: 934] (through reference chain: ###BudgetPacerCycleOutput["campaignIdToCurrentData"]->java.util.LinkedHashMap["1032633420"]->###.CampaignCurrentData["amountSpent"])

I tried to replace the annotations

@JsonFormat(shape=JsonFormat.Shape.STRING)

with

@JsonIgnore

and I didn't get the error. However, I don't want to ignore these fields. What can I do?

Does this answer your question?https://stackoverflow.com/questions/11319445/java-to-jackson-json-serialization-money-fields — priyranjan, Dec 01 '20 at 12:21
Do you want to serialise this class to `JSON` payload or deserialise `JSON` payload to this class? Which version of `Jackson` do you use? — Michał Ziober, Dec 01 '20 at 15:42
Could you please create and share simple test how do you use this class and `Jackson`. It should work properly. — Michał Ziober, Dec 01 '20 at 19:22

Jackson: why doesn't annotating BigDecimal fields with @JsonFormat(shape=JsonFormat.Shape.STRING) work?

0 Answers0