Jersey/Jackson @JsonIgnore on setter

Question

i have an class with the following annotations:

class A {
public Map> references;

@JsonProperty
public Map

        

Answer 1

You have to make sure there is @JsonIgnore annotation on the field level as well as on the setter, and getter annotated with @JsonProperty.

public class Echo {

    @Null
    @JsonIgnore
    private String doNotDeserialise;

    private String echo;

    @JsonProperty
    public String getDoNotDeserialise() {
        return doNotDeserialise;
    }

    @JsonIgnore
    public void setDoNotDeserialise(String doNotDeserialise) {
        this.doNotDeserialise = doNotDeserialise;
    }

    public String getEcho() {
        return echo;
    }

    public void setEcho(String echo) {
        this.echo = echo;
    }
}

@Controller
public class EchoController {

@ResponseBody
@RequestMapping(value = "/echo", consumes = APPLICATION_JSON_VALUE, produces = APPLICATION_JSON_VALUE)
    public Echo echo(@RequestBody @Valid Echo echo) {
        if (StringUtils.isEmpty(echo.getDoNotDeserialise())) {
            echo.setDoNotDeserialise("Value is set by the server, not by the client!");
        }

        return echo;
    }
}

• If you submit a JSON request with a “doNotDeserialise” value set to something, when JSON is deserialised to an object it will be set to null (if not I put a validation constraint on the field so it will error out)
• If you set the “doNotDeserialise” value to something on the server then it will be correctly serialised to JSON and pushed to the client