java - Spring Boot @ControllerAdvice + @Transactional 无法按预期工作
问题描述
我在一个投注网站上工作,所以交易非常重要。我创建了一个 ExceptionHandler@ControllerAdvice
用于捕获来自业务层的所有异常。
@ControllerAdvice
public class HttpExceptionHandler {
private String getStackTrace(final Throwable throwable) {
final StringWriter stringWriter = new StringWriter()
final PrintWriter printWriter = new PrintWriter(stringWriter, true)
throwable.printStackTrace(printWriter)
stringWriter.getBuffer().toString()
}
private List<String> filterStackTrace(final String stackTrace) {
def stack = stackTrace.split('\n\t')
stack.findAll({ it.contains('com.dsindigo.trading') })
}
private ResponseEntity<HttpErrorResponse> buildResponse(final Exception ex, final String message) {
HttpErrorResponse error = new HttpErrorResponse(
stack: filterStackTrace(getStackTrace(ex)),
message: message
)
new ResponseEntity<HttpErrorResponse>(error, HttpStatus.BAD_REQUEST)
}
@ExceptionHandler(UsernameAlreadyExistsException)
ResponseEntity<HttpErrorResponse> catchUsernameAlreadyExists(final UsernameAlreadyExistsException ex) {
buildResponse(ex, HttpErrorMessages.USERNAME_ALREADY_EXISTS)
}
@ExceptionHandler(EmailAlreadyExistsException)
ResponseEntity<HttpErrorResponse> catchEmailAlreadyExists(final EmailAlreadyExistsException ex) {
buildResponse(ex, HttpErrorMessages.EMAIL_ALREADY_EXISTS)
}
//More exceptions...
@ExceptionHandler(Exception)
ResponseEntity<HttpErrorResponse> catchAny(final Exception ex) {
buildResponse(ex, HttpErrorMessages.UNKNOWN)
}
}
所以基本上它会捕获一个异常(例如。UsernameAlreadyExistsException
)并创建一个包含自定义消息和堆栈跟踪(用于调试目的)的 JSON 响应。
这是一个抛出自定义异常的服务示例:
@Service
class UserServiceImpl implements UserService {
// @Autowired stuff ...
@Override
@Transactional
UserDTO save(UserDTO user) {
UserDTO current = findOneByUsername(user.username)
if (current != null)
throw new UsernameAlreadyExistsException()
current = findOneByEmail(user.email)
if (current != null)
throw new EmailAlreadyExistsException()
ConfigurationDTO configuration = configurationService.findOne();
user.active = false
user.password = bCryptPasswordEncoder.encode(user.password)
user.balance = configuration.initialBalance
User entity = mapper.map(user, User)
entity = userRepository.save(entity)
user = mapper.map(entity, UserDTO)
transactionService.createForUser(user.id, INITIAL_CHIPS_ID, configuration.initialBalance)
TokenDTO token = tokenService.createForUser(user.id)
emailService.sendRegisterMessage(user.email, token.token)
user
}
}
问题是,当我在没有@Transactional
异常处理程序的情况下抛出自定义异常时,会执行正确的方法,但添加@Transactional
总是会执行通用Exception
方法。
我错过了什么吗?
解决方案
这些声明:
@ExceptionHandler(UsernameAlreadyExistsException)
应该是这样的:
@ExceptionHandler(UsernameAlreadyExistsException.class)
此外,请确保您的异常正在扩展 RuntimeException。如果在代码中的其他任何地方(包括 Spring 的拦截器!)捕获并处理了异常,ControllerAdvice 将不会处理它。
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