How to use content fragment api in react?

Creating a servlet or a Sling model to read content fragments and serialize them into JSON in Adobe Experience Manager (AEM) involves several steps. Below, I'll provide an example of how you can create a simple Sling model for this purpose. This example assumes that you have already created a Content Fragment Model and a JSON Exporter Configuration in AEM.

1. Create a Sling Model Class:

   First, create a Java class for your Sling model. This class will be responsible for fetching content fragments and serializing them into JSON. Below is a basic example:

    
   package com.example.core.models; import org.apache.sling.api.SlingHttpServletRequest; import org.apache.sling.api.SlingHttpServletResponse; import org.apache.sling.api.servlets.SlingAllMethodsServlet; import org.apache.sling.models.annotations.Default; 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.apache.sling.models.factory.ModelFactory; import org.json.JSONArray; import org.json.JSONObject; import javax.servlet.Servlet; import javax.servlet.ServletException; import java.io.IOException; @Model(adaptables = SlingHttpServletRequest.class) public class ContentFragmentServlet extends SlingAllMethodsServlet { @ValueMapValue @1497330(values = "YourContentFragmentPath") private String contentFragmentPath; @SlingObject private SlingHttpServletRequest request; @SlingObject private SlingHttpServletResponse response; @9944223 protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException { try { // Fetch the Content Fragment based on the provided path org.apache.sling.api.resource.Resource contentFragmentResource = request.getResourceResolver().getResource(contentFragmentPath); if (contentFragmentResource != null) { // Create a JSON representation of the Content Fragment JSONObject contentFragmentJSON = new JSONObject(); contentFragmentJSON.put("title", contentFragmentResource.getValueMap().get("title", "")); // Add more properties as needed // Write the JSON to the response response.setContentType("application/json"); response.setCharacterEncoding("UTF-8"); response.getWriter().write(contentFragmentJSON.toString()); } else { response.sendError(404, "Content Fragment not found"); } } catch (Exception e) { response.sendError(500, "Internal Server Error"); } } }

2. Configure the Servlet:

   Next, you need to configure the servlet in AEM. You can do this by creating an OSGi configuration for the servlet. Here is an example of how to configure it:

   • Create a sling:OsgiConfig node under /apps/<your_project>/config (or a similar location).
   • Define the configuration properties for your servlet, including the servlet path and any other required settings.

   Here is an example of a servlet configuration in JSON format:

   { "sling.servlet.methods": ["GET"], "sling.servlet.paths": ["/bin/contentfragment"], "sling.servlet.extensions": "json", "service.ranking": 100 }

   In this example, the servlet is mapped to the path /bin/contentfragment and configured to respond to GET requests with the .json extension.

3. Access the Servlet from Your SPA:

   In your SPA, you can make an HTTP GET request to the servlet endpoint (e.g., /bin/contentfragment) to retrieve the serialized JSON data.

Please note that this is a basic example to get you started. You should adapt it to your specific requirements, error handling, and security considerations. Additionally, ensure that you have appropriate permissions and security measures in place for accessing content fragments and executing servlets in your AEM instance.