CODEWITHSUNDEEP
javaspringspring-bootjpeghttpresponse
lyancsie
lyancsie

Reputation: 678

Saving an image returned by an API in JSON

I am using a Meme generator API. My goal is to generate memes with the API , be able to view and save them as JPG images.

When I try to use the Java code provided by the creator, I get an error message.

Here's the provided code that fails:

  HttpResponse<JsonNode> response = Unirest.get("https://ronreiter-meme-generator.p.rapidapi.com/meme?font=Impact&font_size=50&meme=Condescending-Wonka&top=Yolo&bottom=HA")
      .header("X-RapidAPI-Key", "TOP_SECRET")
      .asJson();

The error message:

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'APIController' defined in file [C:\yaml\out\production\classes\com\example\demo\controllers\APIController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'APIService' defined in file [C:\yaml\out\production\classes\com\example\demo\services\APIService.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.demo.services.APIService]: Constructor threw exception; nested exception is com.mashape.unirest.http.exceptions.UnirestException: java.lang.RuntimeException: java.lang.RuntimeException: org.json.JSONException: A JSONArray text must start with '[' at 1 [character 2 line 1]

It says the field 

response

cannot be parsed as a JSONArray, so I tried this code snippet instead:

  HttpResponse<String> meme = Unirest.get("https://ronreiter-meme-generator.p.rapidapi.com/meme?font=Impact&font_size=50&meme=Impossibru-Guy-Original&top=Random+meme&bottom=Bottom+text")
      .header("X-RapidAPI-Key", "TOP_SECRET")
      .asString();

In this case the code runs, but as I call the endpoint, I get loads of

ufffd

snippets in the String, which basically means that I am trying to read a code which has no representation in Unicode. I've seen a solution here how I could deal with this problem but I'm not pretty sure I'm going on a right way.

According to website, on which the API is provided, I should get something like this as a response:

enter image description here

Could you give me any pieces of advice how to approach this problem?

Thanks for your help in advance.

Upvotes: 1

Views: 3136

Answers (2)

lyancsie
lyancsie

Reputation: 678

Eventually I could sort out the problem with some help. Here it is:

HttpResponse httpResponse = Unirest.get("https://ronreiter-meme-generator.p.rapidapi.com/meme?font=Impact&font_size=50&meme=Condescending-Wonka&top=Top+text&bottom=Bottom+text")
        .header("X-RapidAPI-Key", "YOUR_SECRET_API_KEY")
        .asBinary();
InputStream inputStream = httpResponse.getRawBody();
BufferedImage imBuff = ImageIO.read(inputStream);
String filePath = "C:/x/x.jpg";
File file = new File(filePath);
ImageIO.write(imBuff, "jpg", file);

So here are the points to do:

  1. Retrieve the response as binary data
  2. Transform it to an InputStream
  3. Create a BufferedImage from it
  4. Create a File with the specified filePath
  5. Write the BufferedImage into the FIle

Upvotes: 1

semvdwal
semvdwal

Reputation: 215

The content-type of your API specification contains "image/jpeg". This means that the response does not contain JSON, but binary image data, so trying to parse it as JSON will result in failure.

Try saving the response from your API directly to a file, you'll see that it's an image.

Upvotes: 1

Related Questions