SlingHttpServletRequest returning null when using Jackson Exporter

Forum|Forum|4 years ago
May 25, 2021
4 replies
2694 views

Hi,

Im using SlingHttpServletRequest in my sling model class with jackson exporter. But the request object is always returning null. Can anyone help me on this.

@Model(adaptables = {SlingHttpServletRequest.class,Resource.class}, resourceType = { "sample/components/content/example_comp" }, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
@3484101(name = "jackson", extensions = "json")
public class EESimWizardConfigModel {

@586265
SlingHttpServletRequest request;

@586265
private HashMap<String, String> productFamilyDetails;

public Map<String, String> getProductFamilyDetails() {
if (request != null) {

//then do something

}

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Best answer by joerghoh

The problem is that you allow the model from being adapted from both the request and the resource, and on top of the injected request is optional.

That means, that it is very likely that the behind the scenes the adaption is not done by the request, but rather by the resource, and that the request field is not injected at all.

Asutosh_Jena_

Community Advisor

Hi @maheswariv26797

Can you try with @SlingObject instead of @Inject once ?

@SlingObject

private SlingHttpServletRequest request;

http://www.sgaemsolutions.com/2017/06/sling-model-exporter-in-aem-63.html

Asutosh_Jena_

Community Advisor

Hi @maheswariv26797

I just tried with the below code and it works for me:

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.models.annotations.DefaultInjectionStrategy;
import org.apache.sling.models.annotations.Exporter;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.SlingObject;
import org.apache.sling.models.annotations.injectorspecific.ValueMapValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.annotation.PostConstruct;
import javax.inject.Named;

@Model(adaptables = {SlingHttpServletRequest.class, Resource.class}, resourceType = {"weretail/components/content/heroimage"}, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
@Exporter(name = "jackson", extensions = "json")
public class TestModel {

    private static final Logger log = LoggerFactory.getLogger(TestModel.class);

    @ValueMapValue
    String buttonLinkTo;

    @ValueMapValue
    String fileReference;

    @ValueMapValue
    @Named("sling:resourceType")
    String slingResourceType;

    @SlingObject
    private SlingHttpServletRequest request;

    @PostConstruct
    protected void init() {
        log.info("***** :: init :: Start :: *****");
        if (request != null) {
            log.info("Request Path -> {}", request.getRequestPathInfo());
        } else {
            log.error("Request is NULL");
        }
        log.info("***** :: init :: End :: *****");
    }

    public String getButtonLinkTo() {
        return buttonLinkTo;
    }

    public String getSlingResourceType() {
        return slingResourceType;
    }

    public String getFileReference() {
        return fileReference;
    }
}

http://localhost:4502/content/we-retail/language-masters/en/experience/jcr:content/root/hero_image.model.json

Response I get:

{

buttonLinkTo: null,
fileReference: "/content/dam/we-retail/en/activities/hiking-camping/trekker-ama-dablam.jpg",
slingResourceType: "weretail/components/content/heroimage"

}

Log:

25.05.2021 22:05:15.711 *INFO* [[0:0:0:0:0:0:0:1] [1621960515699] GET /content/we-retail/language-masters/en/experience/jcr:content/root/hero_image.model.json HTTP/1.1] com.community.core.models.TestModel ***** :: init :: Start :: *****
25.05.2021 22:05:15.711 *INFO* [[0:0:0:0:0:0:0:1] [1621960515699] GET /content/we-retail/language-masters/en/experience/jcr:content/root/hero_image.model.json HTTP/1.1] com.community.core.models.TestModel Request Path -> SlingRequestPathInfo: path='/content/we-retail/language-masters/en/experience/jcr:content/root/hero_image', selectorString='model', extension='json', suffix='null'
25.05.2021 22:05:15.711 *INFO* [[0:0:0:0:0:0:0:1] [1621960515699] GET /content/we-retail/language-masters/en/experience/jcr:content/root/hero_image.model.json HTTP/1.1] com.community.core.models.TestModel ***** :: init :: End :: *****

joerghoh

Accepted solution

Adobe Employee

The problem is that you allow the model from being adapted from both the request and the resource, and on top of the injected request is optional.

That means, that it is very likely that the behind the scenes the adaption is not done by the request, but rather by the resource, and that the request field is not injected at all.