24.2. RESTEasy Built-in Internally-Thrown Exceptions

RESTEasy has a set of built-in exceptions that are thrown when an error is encountered during dispatching or marshalling. Each exception matches a specific HTTP error code. The full list is available in the RESTEasy Java Documentation, under the org.jboss.resteasy.spi package. The following table lists the most common exceptions:

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Table 24.1. Common Exceptions
Exception	HTTP Code	Description
`BadRequestException`	400	Bad Request. Request was not formatted correctly or there was a problem processing request input.
`UnauthorizedException`	401	Unauthorized. Security exception thrown if you use RESTEasy's simple annotation- and role-based security.
`InternalServerError` `Exception`	500	Internal Server Error.
`MethodNotAllowed` `Exception`	405	Method Not Allowed. There is no JAX-RS method for the resource that can handle the invoked HTTP operation.
`NotAcceptableException`	406	Not Acceptable. There is no JAX-RS method that can produce the media types listed in the Accept header.
`NotFoundException`	404	Not Found. There is no JAX-RS method that serves the request path/resource.
`Failure`	N/A	Internal RESTEasy. Not logged.
`LoggableFailure`	N/A	Internal RESTEasy error. Logged.
`DefaultOptionsMethod` `Exception`	N/A	If the user invokes HTTP OPTIONS without a JAX-RS method, RESTEasy provides a default behavior by throwing this exception.

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24.2. RESTEasy Built-in Internally-Thrown Exceptions

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