How to parse AEM DAM JSON InputStream and create JSON Object

问题

I have a requirement where-in I have to read the JSON file which exists in AEM DAM. So, I have created a query to read the JSON file in inputStream. With the below line of code, i could get the JSON file in Input Stream. Now, I need to know If there is any standard library to read the input stream and create the JSON Object?

InputStream is = asset.getOriginal().getStream();

回答1:

There are many libraries for serializing/deserializing JSON in java, the most notable is Google’s Gson: https://github.com/google/gson

I’ve used gson in all my AEM projects that require JSON manipulation. That does not mean you can’t use another library.

回答2:

As mentioned above there are many libraries like Google’s Gson, Jackson an etc. I think the below code snippet can help you,

public JSONObject getJsonFromFile(ResourceResolver resolver,String filePath){
   JSONObject jsonObj=new JSONObject();
    Resource resource=  resolver.getResource(filePath);
    try {
        Node jcnode = resource.adaptTo(Node.class).getNode("jcr:content");
        InputStream content=jcnode.getProperty("jcr:data").getBinary().getStream();
        StringBuilder sb = new StringBuilder();
        String line;            
        BufferedReader br = new BufferedReader(new 
        InputStreamReader(content,StandardCharsets.UTF_8));
        while ((line = br.readLine()) != null) {
            sb.append(line);
        }
        jsonObj = new JSONObject(sb.toString());

    }catch (RepositoryException | JSONException | IOException e) {
        LOGGER.error(e.getMessage(),e);
    }

    return jsonObj;
}

来源：https://stackoverflow.com/questions/49121569/how-to-parse-aem-dam-json-inputstream-and-create-json-object

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