[英]Transactional doesn't roll back on checked exception in Spring Boot with Data JPA
I have a ProcessRecon
usecase class with a single method named execute
.我有一个
ProcessRecon
用例 class,其中包含一个名为execute
的方法。 It saves an entity Reconciliation
using paymentRepository.saveRecon
and calls a web service as part of acknowledgement using paymentRepository.sendReconAck
.它使用 paymentRepository.saveRecon 保存实体
Reconciliation
,并使用paymentRepository.saveRecon
调用 web 服务作为确认的paymentRepository.sendReconAck
。
Now there's a chance that this external web service might fail in which case I want to rollback the changes ie the saved entity.现在这个外部 web 服务有可能失败,在这种情况下我想回滚更改,即保存的实体。 Since I am using Unirest, it throws UnirestException which is a checked exception.
由于我使用的是 Unirest,它会抛出 UnirestException,这是一个已检查的异常。
There are no errors on the console but this will probably be helpful [UPDATED] .控制台上没有错误,但这可能会有所帮助[更新] 。
2020-08-20 17:21:42,035 DEBUG [http-nio-7012-exec-6] org.springframework.transaction.support.AbstractPlatformTransactionManager: Creating new transaction with name [com.eyantra.payment.features.payment.domain.usecases.ProcessRecon.execute]:PROPAGATION_REQUIRED,ISOLATION_DEFAULT,-com.mashape.unirest.http.exceptions.UnirestException
...
2020-08-20 17:21:44,041 DEBUG [http-nio-7012-exec-2] org.springframework.transaction.support.AbstractPlatformTransactionManager: Initiating transaction rollback
2020-08-20 17:21:44,044 DEBUG [http-nio-7012-exec-2] org.springframework.orm.jpa.JpaTransactionManager: Rolling back JPA transaction on EntityManager [SessionImpl(621663440<open>)]
2020-08-20 17:21:44,059 DEBUG [http-nio-7012-exec-2] org.springframework.orm.jpa.JpaTransactionManager: Not closing pre-bound JPA EntityManager after transaction
2020-08-20 17:22:40,020 DEBUG [http-nio-7012-exec-2] org.springframework.orm.jpa.support.OpenEntityManagerInViewInterceptor: Closing JPA EntityManager in OpenEntityManagerInViewInterceptor
What I see at the moment is that entity gets pushed to database even if there's a UnirestException
.我目前看到的是,即使存在
UnirestException
,实体也会被推送到数据库。 But I expect no data be saved to database.但我希望没有数据保存到数据库中。
I am using Spring Boot 2.3.3 with MySQL 5.7.我正在使用 Spring Boot 2.3.3 和 MySQL 5.7。 This is the code I have for it.
这是我的代码。
ProcessRecon.java ProcessRecon.java
@Usecase // this custom annotation is derived from @service
public class ProcessRecon {
private final PaymentRepository paymentRepository;
@Autowired
public ProcessRecon(PaymentRepository paymentRepository) {
this.paymentRepository = paymentRepository;
}
@Transactional(rollbackFor = UnirestException.class)
public Reconciliation execute(final Reconciliation reconciliation) throws UnirestException {
PaymentDetails paymentDetails = paymentRepository.getByReqId(reconciliation.getReqId());
if (paymentDetails == null)
throw new EntityNotFoundException(ExceptionMessages.PAYMENT_DETAILS_NOT_FOUND);
reconciliation.setPaymentDetails(paymentDetails);
Long transId = null;
if (paymentDetails.getImmediateResponse() != null)
transId = paymentDetails.getImmediateResponse().getTransId();
if (transId != null)
reconciliation.setTransId(transId);
if (reconciliation.getTransId() == null)
throw new ValidationException("transId should be provided in Reconciliation if there is no immediate" +
" response for a particular reqId!");
// THIS GETS SAVED
Reconciliation savedRecon = paymentRepository.saveRecon(reconciliation);
paymentDetails.setReconciliation(savedRecon);
// IF THROWS SOME ERROR, ROLLBACK
paymentRepository.sendReconAck(reconciliation);
return savedRecon;
}
}
PaymentRepositoryImpl.java PaymentRepositoryImpl.java
@CleanRepository
public class PaymentRepositoryImpl implements PaymentRepository {
@Override
public String sendReconAck(final Reconciliation recon) throws UnirestException {
// Acknowledge OP
return sendAck(recon.getRequestType(), recon.getTransId());
}
String sendAck(final String requestType, final Long transId) throws UnirestException {
// TODO: Check if restTemplate can work with characters (requestType)
final Map<String, Object> queryParams = new HashMap<String, Object>();
queryParams.put("transId", transId);
queryParams.put("requestType", requestType);
logger.debug("{}", queryParams);
final HttpResponse<String> result = Unirest.get(makeAckUrl()).queryString(queryParams).asString();
logger.debug("Output of ack with queryParams {} is {}", queryParams, result.getBody());
return result.getBody();
}
@Override
public Reconciliation saveRecon(final Reconciliation recon) {
try {
return reconDS.save(recon);
}
catch (DataIntegrityViolationException ex) {
throw new EntityExistsException(ExceptionMessages.CONSTRAINT_VIOLATION);
}
}
}
ReconciliationDatasource.java ReconciliationDatasource.java
@Datasource // extends from @Repository
public interface ReconciliationDatasource extends JpaRepository<Reconciliation, Long> {
List<Reconciliation> findByPaymentDetails_User_Id(Long userId);
}
To make annotations work you have to use interfaces instead of classes for dependency injection.要使注释起作用,您必须使用接口而不是类来进行依赖注入。
interface ProcessRecon {
Reconciliation execute(final Reconciliation reconciliation)
throws UnirestException;
}
Then然后
@Usecase
public class ProcessReconImpl implements ProcessRecon {
private final PaymentRepository paymentRepository;
@Autowired
public ProcessReconImpl(PaymentRepository paymentRepository) {
this.paymentRepository = paymentRepository;
}
@Transactional(rollbackFor = UnirestException.class)
public Reconciliation execute(final Reconciliation reconciliation) throws UnirestException {
//method implementation...
}
}
Usage用法
@Autowired
ProcessRecon processRecon;
public void executeServiceMethod(Reconciliation reconciliation) {
processRecon.execute(reconciliation)
}
This way you have got proxy of ProcessReconImpl
with provided by annotations additional functionality.通过这种方式,您
ProcessReconImpl
的代理,并具有注释提供的附加功能。
I assumed the default engine for the tables would be InnoDB but to my surpise, the tables were created using MyISAM engine which doesn't support transactions.我假设表的默认引擎是InnoDB ,但令我惊讶的是,这些表是使用不支持事务的MyISAM引擎创建的。
I resolved the problem by using the below property as suggested here我按照此处的建议使用以下属性解决了问题
spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
instead of代替
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
That was the only change required.这是唯一需要的改变。 Thanks!
谢谢!
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