ExceptionMapper for WebApplicationExceptions thrown with entity?

问题

In our (legacy) codebase, we're throwing WebApplicationExceptions in different ways. In an attempt to make some order in how we're handling exceptions - I wanted to create an ExceptionMapper for these WAEs (and others).

I realized, however, that Jersey's ExceptionMapper only maps WAE which weren't thrown with an entity.

For example:

throw new WebApplicationException(Response.status(500).build());

This exception is caught by the ExceptionMapper.

throw new WebApplicationException(Response.status(500).entity(WsResourceUtils.createWSResourceRestError(500, "bla")).build());

This exception is NOT caught by the ExceptionMapper.

Both are thrown from the same point in code.

This is my ExceptionMapper:

@Provider
public class GeneralExceptionMapper implements ExceptionMapper<Throwable> {

    private static final Logger logger = LoggerFactory.getLogger(GeneralExceptionMapper.class);

    @Override
    public Response toResponse(Throwable e) {
        logger.error("Caught a WAE", e);
...
}

Is it possible to create an ExceptionMapper which will catch WebApplicationExceptions even if their response is already built with an entity?

We're using Jersey 1.17.

Thanks.

回答1:

please consider looking at the code in GIST :

https://gist.github.com/jeorfevre/9fb2c447a01bcc724998

1. Register a Mapper that of MagicException that contains Response
2. Define Exception that contain response
3. Throw this exception

来源：https://stackoverflow.com/questions/29414041/exceptionmapper-for-webapplicationexceptions-thrown-with-entity