How do I fix missing font files when integrating Font Awesome into JSF?

Addressing Font File Retrieval Issues When Integrating Font Awesome in JSF

When integrating Font Awesome into JSF, it's crucial to address issues related to missing font files. These appear as empty squares instead of the expected icons. The browser often cannot locate the font files because the Font Awesome CSS file references them using a relative path.

Cause of the Problem

The JSF component sets the library attribute, which places the CSS file in a different path. Additionally, the JSF applies a special prefix, /javax.faces.resource/*, to these resources, preventing the browser from accessing them directly.

Solution

Edit the Font Awesome CSS file and adjust the references to the font files using the #{resource} mapping in EL. Remember to replace ? with & in the query string to account for the library name.

Example

After placing the Font Awesome CSS and font files appropriately, the CSS file should be modified as follows:

<code class="css">@font-face {
  font-family: 'FontAwesome';
  src: url("#{resource['font-awesome:fonts/fontawesome-webfont.eot']}&v=4.3.0");
  /* ... */
}</code>

Additional Considerations

Ensure that the modified CSS file is used in the JSF page and that the server is restarted for the changes to take effect.

Mime-Types and OmniFaces

If JSF1091 warnings appear in the server logs, indicating missing mime-types, add appropriate mime-type mappings to web.xml.

Another option is to install the OmniFaces UnmappedResourceHandler and reconfigure the FacesServlet mapping. This eliminates the need to edit the CSS file.

References

• [How to use Font Awesome from webjars.org with JSF](https://stackoverflow.com/questions/36342830/how-to-use-font-awesome-from-webjars-org-with-jsf)

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