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M
maheswari25
Level 2
May 13, 2022
Solved

Servlet response is printing CQ related information

  • May 13, 2022
  • 5 replies
  • 4159 views

Hi,

I have written a servlet which calls OSGI service. And OSGI service invokes API and returns JSON response to servlet and servlet prints response on the page. But when printing servlet response on the page, CQ related information is getting printed. I'm not sure why. Can anyone please help me with this?

Below is my servlet code.

 

 

@8220494(service=Servlet.class,
property={
Constants.SERVICE_DESCRIPTION + "=Servlet to call API Url",
"sling.servlet.methods=" + HttpConstants.METHOD_GET,
"sling.servlet.resourceTypes="+ "aem-code/components/structure/page",
"sling.servlet.extensions=" + "txt"
})
public class CallApiServlet extends SlingSafeMethodsServlet {

private static final long serialVersionUID = 1L;
private static final Logger log = LoggerFactory.getLogger(CallApiServlet.class);

@3214626
private CallApiService apiCall;

@9944223
protected void doGet(final SlingHttpServletRequest req,
final SlingHttpServletResponse resp) throws ServletException, IOException {
resp.setContentType("application/json");
String result = apiCall.getApiData(req.getParameterMap());
log.info("called"+result); //Here the result is printing without CQ information
resp.getWriter().write(result);
}
}

 

my servlet response:

{"results":[{"name":{"title":"Ms","first":"Nalan","last":"Oraloğlu"},"login":{"uuid":"baffd062-6cc7-4dd5-b1fd-69d4cde0f845","username":"ticklishgorilla641","password":"zhan","salt":"VUD21uld","md5":"70b78925165996a5926af72b2cbe373d","sha1":"b50f720abecaa5cc9eed47724ddbf457cd501388","sha256":"d3cbfbb1990802e19467640376257db0f631755aaaf85afe9ce0b2925fa91970"},"nat":"TR"}],"info":{"seed":"05d85febdd32196c","results":1,"page":1,"version":"1.3"}}
<!--cq{"decorated":false,"type":"aem-code-challenge/components/structure/page","path":"/content/aem-code-challenge/en/jcr:content","selectors":"txt","servlet":"CallApiServlet","totalTime":114,"selfTime":114}-->

 

The above CQ information is getting printed which is not required.

Thank you!

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Best answer by joerghoh

First of all, you won't get this on publish. This information is some timing information, which is written only in Author, when the WCMMode is set accordingly. And also only for HTML renderings.

 

As your output is JSON, you should register the servlet correctly and use the "json" extension. Then all should work fine.

 

5 replies

R
raushan123
Level 4
May 14, 2022

 I am seeing you are using .txt extension. how you are hitting a servlet?

    M
    maheswari25Author
    Level 2
    May 14, 2022

    Iam hitting my servlet with the below url like:

    http://localhost:4502/content/aem/en.txt.html

     

    Iam getting the same result even if I give any other extensions.

      Jagadeesh_Prakash
      Community Advisor
      Jagadeesh_PrakashCommunity Advisor
      Community Advisor
      May 14, 2022

      @maheswari25  can you check what is the logic behind CallApiService apiCall; ?

       

      And also if you can debug if apiCall.getApiData(req.getParameterMap()); is giving the response or else the CQ information is coming from the servlet class.

       

      I am expecting that CQ information is coming from the api response.

        M
        maheswari25Author
        Level 2
        May 14, 2022

        The servlet response is not containing the cq information. I checked in the logs and its not coming from servlet response..CQ data is coming only when printing response on the page.

          DEBAL_DAS
          DEBAL_DAS
          New Member
          May 14, 2022

          I have written this sample servlet 

          package com.aem.demo.core.servlets;

import java.io.IOException;
import java.util.Map;
import java.util.Map.Entry;

import javax.servlet.Servlet;

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.servlets.HttpConstants;
import org.apache.sling.api.servlets.SlingAllMethodsServlet;
import org.osgi.framework.Constants;
import org.osgi.service.component.annotations.Component;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Component(service = Servlet.class, property = { Constants.SERVICE_DESCRIPTION + "=Servlet to call API Url",
		"sling.servlet.methods=" + HttpConstants.METHOD_GET,
		"sling.servlet.resourceTypes=" + "weretail/components/structure/page", "sling.servlet.extensions=" + "txt" })
public class DemoResponseServlet extends SlingAllMethodsServlet {

	private final Logger logger = LoggerFactory.getLogger(DemoResponseServlet.class);

	protected void doGet(SlingHttpServletRequest slingHttpServletRequest,
			SlingHttpServletResponse slingHttpServletResponse) throws IOException {

		slingHttpServletResponse.setContentType("application/json");
		Map<String, String[]> parameterMap = slingHttpServletRequest.getParameterMap();

		for (String key : parameterMap.keySet()) {
			String[] strArr = (String[]) parameterMap.get(key);
			for (String val : strArr) {
				//slingHttpServletResponse.getWriter().write(val);
			}
		}

	}

}

          it's giving me CQ related information in servlet response using localhost:7070/content/we-retail/language-masters/en/men.txt.html as shown below -

          txt is an extension here, why are you accessing as a selector?

           

           

           

           

           

           

           

           

           

           

           

           

          Debal Das, Senior AEM Consultant
            M
            maheswari25Author
            Level 2
            May 14, 2022

            Even if I give any other extension such as 'abc' or any text, CQ information is getting printed. But when I give xml as extension, CQ information is not getting printed. Is there a reason behind this?

            If I access Url as http://localhost:4502/content/aem-code/en.html.xml  , Iam not getting CQ information

              DEBAL_DAS
              DEBAL_DAS
              New Member
              May 14, 2022

               I am getting Internal error while trying to access http://localhost:7070/content/we-retail/language-masters/en/men.txt.abc

               

               

              Again same question in your code txt is an extension here, why are you accessing as a selector?

              Could you please try to access http://localhost:4502/content/aem/en/jcr:content.txt and share the response.

              Debal Das, Senior AEM Consultant
                arunpatidar
                Community Advisor
                arunpatidarCommunity Advisor
                Community Advisor
                May 15, 2022

                Hi,

                Are you using ACS Common and checking this in Author?

                Can you try in publish?

                Arun Patidar
                  joerghoh
                  Adobe Employee
                  joerghohAdobe EmployeeAccepted solution
                  Adobe Employee
                  May 18, 2022

                  First of all, you won't get this on publish. This information is some timing information, which is written only in Author, when the WCMMode is set accordingly. And also only for HTML renderings.

                   

                  As your output is JSON, you should register the servlet correctly and use the "json" extension. Then all should work fine.

                   

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