The Definitive Guide to JSF in Java EE 8: Building Web Applications with JavaServer Faces

© Bauke Scholtz, Arjan Tijms 2018

Bauke Scholtz and Arjan TijmsThe Definitive Guide to JSF in Java EE 8https://doi.org/10.1007/978-1-4842-3387-0_9

9. Exception Handling

Bauke Scholtz¹  and Arjan Tijms²

(1)

Willemstad, Curaçao

(2)

Amsterdam, Noord-Holland, The Netherlands

 

Sometimes things can unexpectedly go wrong. In Java, that usually manifests as an Exception being thrown. In Java EE, it’s basically no different. The issue is how and when to properly handle them. By default, any uncaught exception during an HTTP request will end up in a default error page provided by the application server. Figure 9-1 shows what WildFly’s default HTTP 500 error page looks like:

Figure 9-1

The default HTTP 500 error page of WildFly 11.0.0

The JSF (JavaServer Faces) ...