JSON character encoding

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The symptoms indicate that the JSON string which was originally in UTF-8 encoding was written to the HTTP response using ISO-8859-1 encoding and the webbrowser was instructed to display it as UTF-8. If it was written using UTF-8 and displayed as ISO-8859-1, then you would have seen aériennes. If it was written and displayed using ISO-8859-1, then you would have seen a�riennes.

To fix the problem of the JSON string incorrectly been written as ISO-8859-1, you need to configure your webapp / Spring to use UTF-8 as HTTP response encoding. Basically, it should be doing the following under the covers:

response.setCharacterEncoding("UTF-8");

Don’t change your content type header. It’s perfectly fine for JSON and it is been displayed as UTF-8.

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