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swathiv54399501
Level 3
January 20, 2016
Solved

unable to access JSONObject in sightly html file

  • January 20, 2016
  • 17 replies
  • 11707 views

Hi,

I am trying to access JSONObject  in sightly html,but the data is not displayed.

Below is the sightly java file,where "result" variable is holding JSON string.

public class TestSightly extends WCMUse {

   public String result;
   public JSONObject jsonObject;   
    
    @Override
    public void activate() throws Exception {
        TestLocation testLocation = new TestLocation();
        result = testLocation.testMessage();
        jsonObject = new JSONObject(result);
        
    }

     public String getResult(){
        return result;
    }
    
    public JSONObject getJsonObject(){
        return jsonObject; 
    }
       
}

HTML File:

<div data-sly-include="/libs/wcm/core/components/init/init.jsp"></div>

<div data-sly-use.model="${'com.test.core.models.TestSightly'}">
 <div>${model.result}</div>
 <div>${model.jsonObject}</div>

</div>

 

With the above "model.result" is displaying the string data(json formatted data),but "model.jsonObject" is displaying nothing.

 

Thanks & Regards

swati

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    Best answer by swathiv54399501

    Issue fixed.Found alternate way.

    Instead of using org.apache.sling.commons.json.JSONObject API, I changed to GSON api and converted json to javabean object and then accessing in sightly file.

    But using JSONObject in sightly is still not possible.

    swati

    17 replies

    GK-007
    GK-007
    Level 9
    January 20, 2016

    Are you seeing any error in error.log when this expression is eveluating??

    -Kishore

    Jitendra_S_Toma
    Jitendra_S_Toma
    Level 10
    January 20, 2016

    Just validate result string whether it is correct json or not. And, if there is any invalid json exception, you will have some error message in error.log

    Jitendra

      S
      swathiv54399501Author
      Level 3
      January 20, 2016

      No errors in the error log and even json is correct as I am getting the json of jcr node with infinity.json,so I dont think there will be errors in the json.

      I am able to parse the individual keys of json string in sightly java file and print the values like below,

      String posts = json.getJSONObject("testkey1");
       String  test = posts.getString("testkey2");

      But unable to access direct JSONObject.

      I am trying to avoid parsing keys and values of json in java file (because if I do it ,I have to hardcode keys of json in java file)

      Jitendra_S_Toma
      Jitendra_S_Toma
      Level 10
      January 20, 2016

      I suspect that result string is not a jsonObject. it is a jsonArray. Would you mind returning jsonArray than JSONObject?.

      Jitendra

        S
        swathiv54399501Author
        Level 3
        January 20, 2016

        result is string and it is in json format.Once I get it the result, I am converting it into JSONObject.

        As you suggested, I changed it to JSONArray but no luck.

        JSONArray jsonArray = new JSONArray(result);

        GK-007
        GK-007
        Level 9
        January 20, 2016

        In which format this "result" string is constructed and passed to JSONObject??

        Below is the javadoc details of JSONObject(String).Please refer.

        JSONObject

        public JSONObject(String string) throws JSONException
        Construct a JSONObject from a string. This is the most commonly used JSONObject constructor.

        string - A string beginning with { (left brace) and ending with } (right brace).

        Throws:

        JSONException - If there is a syntax error in the source string.
        S
        swathiv54399501Author
        Level 3
        January 20, 2016

        I am using JSONObject with string as parameter to construct JSONObject.As I mentioned before I am getting the json string from infinity.json(from jcr nodes). Below is the sample json string which I am converting to JSONObject,

         

        {  
           "jcr:primaryType":"nt:unstructured",
           "testkey1":{  
              "jcr:primaryType":"nt:unstructured",
              "test1":"al",
              "test2":"Alabama",
              "test3":"US"
              
              
           },
           "testkey2":{  
              "jcr:primaryType":"nt:unstructured"
           }
        }
         

        Thanks,

        Swati

        Jitendra_S_Toma
        Jitendra_S_Toma
        Level 10
        January 20, 2016

        Swathi,

        I think the issue is not with the Sightly POJO file. Do you mind testing same thing with JSP?.  It is just a guess that something strange happening because of Sightly.

        Jitendra

        S
        swathiv54399501Author
        Level 3
        January 20, 2016

        I already tried with jsp, it is working fine.When I tried to convert that jsp to sightly html file,I faced this issue.

        Jitendra_S_Toma
        Jitendra_S_Toma
        Level 10
        January 20, 2016

        Yes. I had the same feeling. Try using context="unsafe" while rendering json object. Just try that.

        for instance 

        ${jsonObject @ context='unsafe'}

        Jitendra

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