How to Resolve 'org.jsoup.UnsupportedMimeTypeException: Unhandled Content Type' Connection Error?

How can I fix the connection error: 'org.jsoup.UnsupportedMimeTypeException: Unhandled content type' in my Jsoup application?

// Example code to demonstrate usage of Jsoup
Document doc = Jsoup.connect("https://example.com").get();

The 'org.jsoup.UnsupportedMimeTypeException: Unhandled content type' error occurs when Jsoup attempts to parse content with a MIME type it does not recognize or support. This can happen if the server sends back content types such as `application/octet-stream` or `application/xml` that Jsoup cannot handle by default.

Document doc = Jsoup.connect("https://example.com")
    .userAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3")
    .get();

Causes

• The server responds with a MIME type that Jsoup is not able to process.
• There is a misconfiguration on the server causing incorrect MIME types to be sent.
• The response content is empty or does not contain valid HTML.

Solutions

• Ensure the URL is correct and that the server is reachable.
• Verify that the server sends a supported MIME type such as `text/html`.
• If you expect a specific response, check the server configuration to confirm that it’s sending the correct MIME type.
• You can try setting a custom User-Agent to simulate a browser request, which can sometimes help in receiving the proper content type.

Mistake: Not checking the response status code before attempting to parse the content.

Solution: Always verify the HTTP status code before processing the response. For example: if (response.statusCode() == 200) { Document doc = response.parse(); } else { System.out.println("Error: " + response.statusCode()); }.

Mistake: Assuming the content is always HTML without checking the MIME type.

Solution: Inspect the response headers to confirm you are receiving the expected content type and handle unsupported types appropriately.