Spring Data REST @ExceptionHandler

Question

I'd like to catch all exceptions that are thrown during persisting to DB (specifically org.hibernate.exception.ConstraintViolationException). I'm using Spring framework 4.3.8 Spring Data REST 2.6.3 and Spring Data Jpa 1.11 + Hibernate 5.2.8. My idea is to make use of @ControllerAdvice (or @RestController Advice) and @ExceptionHandler(Throwable.class) - but I can't pretty catch the damn exception. Please tell me in which point my idea is erroneus.

Well, I will make the question even easier. Why won't this exception handling work? (The route /users/hello will work flawless though.)

@RepositoryRestController
@RequestMapping("/users")
public class UsersController
{
    @RequestMapping(value = "/hello/{variable}", method =   RequestMethod.GET)
    public @ResponseBody ResponseEntity<?> hello(@PathVariable String variable) throws Exception
    {
        if (variable.equals("1")) {
            throw new Exception("my exception");
        }
        else {
            return ok("hello world");
        }
    }

    @ExceptionHandler
    public String logErrors(Exception e) {
        return "error: " +e.getMessage();
    }
}

@davidxxx please tell me how you would implement it. Without code - just an idea and what annotations you'd use (if any). — Błażej Kocik
– Błażej Kocik, Commented Jul 1, 2017 at 9:26

Błażej Kocik · Accepted Answer · 2017-07-01 13:55:59Z

I've solved the problem. My application main configuration was:

@Configuration
// other neccessary annotations
public class RestApplicationConfig extends RepositoryRestMvcConfiguration {
}

The project was purely Spring Data Rest. To make use of @ExceptionHandler feature you need to run Spring Web MVC. You can do this in either of the ways:

1) Import RepositoryRestMvcConfiguration into your main Spring Web MVC configuration:

@Configuration
@EnableWebMvc
// other neccessary annotations
@Import(RepositoryRestMvcConfiguration.class)
public class WebMvcConfig extends WebMvcConfigurerAdapter{}

2) Use @EnableWebMvc annotation when as main configuration file you have a class that extends the RepositoryRestMvcConfiguration class:

@Configuration
@EnableWebMvc
// other neccessary annotations
public class RestApplicationConfig extends RepositoryRestMvcConfiguration {}

It's worth adding here that in Spring Data REST there is a standard RepositoryRestExceptionHandler class that handles by default all major exception types and loggs them. Thus you don't essentially need to create your own handlers unless you need something more personalized.

Moshe Arad · Accepted Answer · 2017-07-01 10:42:42Z

0

What about:

@ExceptionHandler(org.hibernate.exception.ConstraintViolationException.class)
public String logErrors(Exception e) {
    return "error: " +e.getMessage();
}

answered Jul 1, 2017 at 10:42

Moshe Arad

3,7614 gold badges21 silver badges33 bronze badges

1 Comment

Błażej Kocik Over a year ago

yes, it's ok your code, but the problem was about another thing in my project - see my answer below

Collectives™ on Stack Overflow

Spring Data REST @ExceptionHandler

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related