Minimize the size of returned json data from spring data repository - spring-data-rest

Question

I have two microservice, one of them need at boot to load all operator name/codes and index them in a RadixTree.
I am trying to load around 36000 records using feign/data-rest and it is working but I noticed that in the response approximately half of the data size are coming from links
{
"_embedded" : {
"operatorcode" : [ {
"enabled" : true,
"code" : 9320,
"operatorCodeId" : 110695,
"operatorName" : "Afghanistan - Kabul/9320",
"operatorId" : 1647,
"activationDate" : "01-01-2008",
"deactivationDate" : "31-12-2099",
"countryId" : 1,
"_links" : {
"self" : {
"href" : "http://10.44.0.51:8083/operatorcode/110695"
},
"operatorCode" : {
"href" : "http://10.44.0.51:8083/operatorcode/110695{?projection}",
"templated" : true
},
"operator" : {
"href" : "http://10.44.0.51:8083/operatorcode/110695/operator"
}
}
}
...
]
}
Is there any way to stop sending back the _links as in my case it is not being used I tried setting use-hal-as-default-JSON-media-type: false and using projections but did not succeed.

Answer 1

I am not sure that it is a correct way to do this but you can try something like this:
#Bean
public Jackson2ObjectMapperBuilder jacksonBuilder() {
Jackson2ObjectMapperBuilder b = new Jackson2ObjectMapperBuilder();
b.mixIn(Object.class, IgnorePropertiesInJackson.class);
return b;
}
#JsonIgnoreProperties({"_links"})
private abstract class IgnorePropertiesInJackson {
}