Interested in accessing JSON data from another domain? CORS has got you covered

Over at localhost:8080/abc/v1/doc, I get some json data when accessed directly from the browser's address bar. Here are the response headers:

Response Headers 
  Access-Control-Allow-Origin: *
  Access-Control-Allow-Methods: GET, POST, OPTIONS
  Content-Type: application/json 
  Transfer-Encoding: chunked 
  Server: Jetty(9.1.4.v20140401) 

However, attempting to access this URL from a different domain results in the following exception:

No 'Access-Control-Allow-Origin' header is present on the requested resource

I also have a question about how REST API Clients can call any URLs even without the required 'Access-Control-Allow-Origin' header. How is this possible?

Thank you for your help!

Answer №1

After encountering a similar issue with localhost, I was able to find a solution by switching the plugin to 'RESTClient' for my Firefox web browser. You can download the plugin from here.

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