Is it possible to serialize a JSON response while excluding some elements based on If conditions?
if(a == 1) {
//show element
} else {
//don't show element
}
I've tried using @JSONIgnore, but that simply ignores the element regardless of conditions. I'm new to this space. Any ideas?
EDIT: I'm working on enterprise software, so using 3rd party libraries and such won't be a possibility.
You could use custom Jackson serializer.
public class ConditionalValueSerializer extends StdSerializer<Integer> {
public ConditionalValueSerializer() {
this(null);
}
public ConditionalValueSerializer(Class<Integer> t) {
super(t);
}
@Override
public void serialize(Integer a, JsonGenerator gen, SerializerProvider provider) throws IOException {
if(a == 5 ){
gen.writeString(a.toString());
} else {
gen.writeString("");
}
}
}
Then use the custom serializer in the object.
public class SomeThing {
public String name;
@JsonSerialize(using = ConditionalValueSerializer.class)
public Integer value;
}
I know your question is about @JsonIgnore, but you may want to try @JsonInclude:
@JsonInclude(value = JsonInclude.Include.CUSTOM,
valueFilter = CustomValueFilter.class)
private Integer value;
public class CustomValueFilter {
@Override
public boolean equals(Object other) {
Integer a = (Integer) other;
return a == 1;
}
}