Question

I have the follwing code inside a facelet page:

<h:inputNumber value="bean.property">
    <f:convertNumber type="currency" />
</h:inputNumber

The converter is because there can be a kind of default value inside the input field, which comes from the bean property. Everything is rendered correctly. The value inside the input field is rendered with an “€” character (e.g. “1.453 €”.

When I submit the form there comes an error up:

"nameOfInputField" konnte nicht als ein Geldbetrag erkannt werden '304,00 â¬'

In english it is some like:

"nameOfInputField" could not be regognized as an amount of money '304,00 â¬'

Please have a look at the “€” character. It seems to be printed as “⬔. While it was rendered correctly before submitting the form, now it looks like “⬔ inside the error message and inside the input field.

All pages are encoded in UTF-8.

What is the reason for this error?
How can fix it?

Thanks in advance

Answer 1

â¬

This is typical for the € from an original UTF-8 source which is incorrectly been decoded using ISO-8859-1. Here’s a small snippet which demonstrates that:

System.out.println(new String("€".getBytes("UTF-8"), "ISO-8859-1"));

All pages are encoded in UTF-8.

You’re likely talking about response encoding. You need to set the request encoding as well.

To set the encoding for GET requests (basically: URI encoding), you need to consult the appserver specific documentation. As it’s unclear which one you’re using, here’s a Tomcat targeted example: <Connector URIEncoding="UTF-8" />. To set the encoding for POST requests, you need to create a simple filter which does request.setCharacterEncoding("UTF-8") if it is null. More background information and hints can be found in this article.