79 lines
2.9 KiB
Markdown
79 lines
2.9 KiB
Markdown
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---
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aliases:
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- ConstraintViolationException
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- ServerExceptionMapper
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- ExceptionHandler
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tags:
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- зрелость/🌱
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date:
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- - 2024-03-03
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zero-link:
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- "[[Quarkus]]"
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parents:
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linked:
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---
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Для обычной обработки исключений достаточно вот такого класса
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```java
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package dev.struchkov.network.controller.rest;
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import dev.struchkov.network.controller.rest.schema.error.ErrorMessage;
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import dev.struchkov.network.exception.NotFoundException;
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import dev.struchkov.network.exception.SocialNetworkException;
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import jakarta.ws.rs.core.Response;
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import org.jboss.resteasy.reactive.RestResponse;
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import org.jboss.resteasy.reactive.server.ServerExceptionMapper;
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public class ExceptionHandler {
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@ServerExceptionMapper
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public RestResponse<ErrorMessage> mapException(RuntimeException e) {
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return RestResponse.status(Response.Status.BAD_REQUEST, ErrorMessage.builder().message(e.getMessage()).build());
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}
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@ServerExceptionMapper
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public RestResponse<ErrorMessage> mapException(SocialNetworkException e) {
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return RestResponse.status(Response.Status.BAD_REQUEST, ErrorMessage.builder().message(e.getMessage()).build());
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}
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@ServerExceptionMapper
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public RestResponse<ErrorMessage> mapException(NotFoundException e) {
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return RestResponse.status(Response.Status.NOT_FOUND, ErrorMessage.builder().message(e.getMessage()).build());
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}
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}
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```
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Однако такой класс не будет перехватывать специфический исключения, например `ConstraintViolationException`, чтобы перехватывать их, необходимо реализовать `ExceptionMapper<T>`
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```
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package dev.struchkov.network.controller.rest;
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import dev.struchkov.network.controller.rest.schema.error.ValidationErrorData;
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import dev.struchkov.network.controller.rest.schema.error.ValidationErrorMessage;
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import jakarta.validation.ConstraintViolationException;
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import jakarta.ws.rs.core.Response;
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import jakarta.ws.rs.ext.ExceptionMapper;
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import jakarta.ws.rs.ext.Provider;
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@Provider
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public class ConstraintViolationMapper implements ExceptionMapper<ConstraintViolationException> {
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@Override
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public Response toResponse(ConstraintViolationException e) {
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return Response.status(Response.Status.BAD_REQUEST)
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.entity(
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ValidationErrorMessage.builder()
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.errors(
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e.getConstraintViolations().stream()
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.map(constraintViolation -> ValidationErrorData.builder().message(constraintViolation.getMessage()).build())
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.toList()
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)
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.build()
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)
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.build();
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}
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}
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```
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