Using JavaScript to parse Java objects into JSON data

I'm working on sending an array of POJOs as a response to an AJAX call.

Within my POJO, the following toString() method is defined:

@Override
public String toString() {
   return "Expense [period=" + period + ", description=" + description + 
               ", category="+ category + ", subCategory="+subCategory+", "
               + "amount="+amount+", store="+store+"]";
}

In my doGet method, I am constructing an ArrayList of these POJOs and attempting to output them using:

    Gson gson = new Gson();
    String json = gson.toJson(expensesForPeriod);
    out.write(json);

Am I doing this correctly in terms of sending an ArrayList of JSON objects?

And on the JavaScript side, how would I convert the JSON string into an array of objects and then iterate over them?

Answer №1

Ensure to include the @Expose annotation before declaring each instance member within the class definition, and subsequently invoke the Gson file on said instance.

Answer №2

When working with Java:

Avoid overriding the toString method, simply utilize Gson for object-to-JSON string conversion

For those on the JavaScript side:

Check out this helpful guide: link

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