Spring 由于重复键异常，启动反应存储库测试总是失败

Question

我正在尝试测试我的 ReactiveCrudRepository，但由于 org.springframework.dao.DataIntegrityViolationException，我的 findByName 方法总是失败。似乎该序列始终为任何实体提供相同的 ID。我不确定数据库是否运行异常或我的测试是否异常。如果我保存一个人实体似乎没问题，但如果我试图保存多个实体，我就会遇到异常。

我使用的是 Postgres 13 数据库和 SpringBoot 2.3.4。我的 table 创建语句如下所示：

CREATE TABLE person (
    id bigint NOT NULL DEFAULT nextval('reactive.person_id_seq'::regclass),
    last_name varying(255),
    first_name character varying(255),
    email character varying(255),
    CONSTRAINT person_pkey PRIMARY KEY (id)
)

存储库测试 class 看起来像这样：

import java.time.LocalDateTime;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.data.r2dbc.DataR2dbcTest;
import alone.at.home.reactive.entity.PersonEntity;
import lombok.extern.slf4j.Slf4j;
import reactor.test.StepVerifier;

@DataR2dbcTest
@Slf4j
public class PersonRepositoryTest {

@Autowired
private PersonRepository personRepo;

@BeforeEach
void clean() {
    personRepo.deleteAll().subscribe();
}

@Test
void testFindByNameMethod() {
    
    PertsonEntity person = PersonEntity.builder()
        .lastName("QWERTZ")
        .firstName("Test")
        .email("QWERTZ@Test.org")
        .build();
    
    PertsonEntity person2 = PersonEntity.builder()
        .lastName("QWERTZ")
        .firstName("Test2")
        .email("QWERTZ2@Test2.org")
        .build();
    
    personRepo.save(person)
        .doOnSuccess(onSuccess -> log.info("Person saved successfully: {}", onSuccess))
        .doOnError(onError -> log.info("Person save operation not successful: {}", onError.getMessage(), onError))
        .subscribe();
    personRepo.save(person2)
        .doOnSuccess(onSuccess -> log.info("Person saved successfully: {}", onSuccess))
        .doOnError(onError -> log.info("Person save operation not successful: {}", onError.getMessage(), onError))
        .subscribe();
    

    personRepo.findByName("QWERTZ")
        .as(StepVerifier::create)
        .expectNextCount(2)
        .verifyComplete();
}

}

个人实体class:

import java.time.LocalDateTime;
import org.springframework.data.annotation.Id;
import org.springframework.data.relational.core.mapping.Column;
import org.springframework.data.relational.core.mapping.Table;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@Builder
@AllArgsConstructor  
@NoArgsConstructor 
@Table("person")
public class PersonEntity {

    @Id
    private long id;
    @Column
    private String lastName;
    @Column
    private String firstName;
    @Column
    private double email;
}

MyCRUD 存储库：

import java.util.List;
import org.springframework.data.repository.reactive.ReactiveCrudRepository;
import org.springframework.stereotype.Repository;
import import alone.at.home.reactive.entity.PersonEntity;
import reactor.core.publisher.Flux;

@Repository
public interface PersonRepository extends ReactiveCrudRepository<PersonEntity, Long>{

    Mono<List<PersonEntity>> findByName(String name);

}

整个异常堆栈跟踪：

org.springframework.dao.DataIntegrityViolationException: executeMany; SQL [INSERT INTO person (id, last_name, first_name, email) VALUES (, , , )]; duplicate key violated unique-vonstraint »person_pkey«; nested exception is io.r2dbc.postgresql.ExceptionFactory$PostgresqlDataIntegrityViolationException: [23505] duplicate key value violated Unique-Constraint »person_pkey«
    at org.springframework.data.r2dbc.support.R2dbcExceptionSubclassTranslator.doTranslate(R2dbcExceptionSubclassTranslator.java:78) ~[spring-data-r2dbc-1.1.4.RELEASE.jar:1.1.4.RELEASE]
    at org.springframework.data.r2dbc.support.AbstractFallbackR2dbcExceptionTranslator.translate(AbstractFallbackR2dbcExceptionTranslator.java:67) ~[spring-data-r2dbc-1.1.4.RELEASE.jar:1.1.4.RELEASE]
    at org.springframework.data.r2dbc.core.DefaultDatabaseClient.translateException(DefaultDatabaseClient.java:264) ~[spring-data-r2dbc-1.1.4.RELEASE.jar:1.1.4.RELEASE]
    at org.springframework.data.r2dbc.core.DefaultDatabaseClient.lambda$inConnectionMany(DefaultDatabaseClient.java:200) ~[spring-data-r2dbc-1.1.4.RELEASE.jar:1.1.4.RELEASE]
    at reactor.core.publisher.Flux.lambda$onErrorMap(Flux.java:6539) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Flux.lambda$onErrorResume(Flux.java:6592) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:88) [reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxUsingWhen$UsingWhenSubscriber.deferredError(FluxUsingWhen.java:408) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxUsingWhen$RollbackInner.onComplete(FluxUsingWhen.java:485) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onComplete(Operators.java:2016) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxPeek$PeekSubscriber.onComplete(FluxPeek.java:252) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onComplete(Operators.java:2016) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Operators$MonoSubscriber.onComplete(Operators.java:1824) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoIgnoreThen$ThenAcceptInner.onComplete(MonoIgnoreThen.java:314) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Operators$MonoSubscriber.onComplete(Operators.java:1824) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoIgnoreThen$ThenAcceptInner.onComplete(MonoIgnoreThen.java:314) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.pool.SimpleDequePool$QueuePoolRecyclerInner.onComplete(SimpleDequePool.java:555) ~[reactor-pool-0.1.6.RELEASE.jar:0.1.6.RELEASE]
    at reactor.core.publisher.Operators.complete(Operators.java:135) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoEmpty.subscribe(MonoEmpty.java:45) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Mono.subscribe(Mono.java:4213) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.pool.SimpleDequePool$QueuePoolRecyclerMono.subscribe(SimpleDequePool.java:667) ~[reactor-pool-0.1.6.RELEASE.jar:0.1.6.RELEASE]
    at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:153) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:153) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Mono.subscribe(Mono.java:4213) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:97) [reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoIgnoreElements$IgnoreElementsSubscriber.onError(MonoIgnoreElements.java:76) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onError(FluxMapFuseable.java:134) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onError(FluxFilterFuseable.java:156) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFilterFuseable$FilterFuseableConditionalSubscriber.onError(FluxFilterFuseable.java:375) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onError(FluxMapFuseable.java:326) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxHandleFuseable$HandleFuseableSubscriber.onNext(FluxHandleFuseable.java:185) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2344) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxHandleFuseable$HandleFuseableSubscriber.request(FluxHandleFuseable.java:243) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.request(FluxMapFuseable.java:346) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFilterFuseable$FilterFuseableConditionalSubscriber.request(FluxFilterFuseable.java:403) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.request(FluxFilterFuseable.java:184) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoIgnoreElements$IgnoreElementsSubscriber.onSubscribe(MonoIgnoreElements.java:64) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onSubscribe(FluxFilterFuseable.java:81) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFilterFuseable$FilterFuseableConditionalSubscriber.onSubscribe(FluxFilterFuseable.java:298) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onSubscribe(FluxMapFuseable.java:255) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxHandleFuseable$HandleFuseableSubscriber.onSubscribe(FluxHandleFuseable.java:148) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoCurrentContext.subscribe(MonoCurrentContext.java:35) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.Mono.subscribe(Mono.java:4213) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxUsingWhen$UsingWhenSubscriber.onError(FluxUsingWhen.java:374) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:834) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:600) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFlatMap$FlatMapMain.drain(FluxFlatMap.java:580) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFlatMap$FlatMapMain.innerError(FluxFlatMap.java:855) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFlatMap$FlatMapInner.onError(FluxFlatMap.java:1006) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxHandle$HandleSubscriber.onError(FluxHandle.java:196) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:118) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxTakeUntil$TakeUntilPredicateSubscriber.onNext(FluxTakeUntil.java:77) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onNext(FluxFilterFuseable.java:112) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxContextStart$ContextStartSubscriber.onNext(FluxContextStart.java:96) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at io.r2dbc.postgresql.util.FluxDiscardOnCancel$FluxDiscardOnCancelSubscriber.onNext(FluxDiscardOnCancel.java:86) ~[r2dbc-postgresql-0.8.5.RELEASE.jar:0.8.5.RELEASE]
    at reactor.core.publisher.FluxCreate$BufferAsyncSink.drain(FluxCreate.java:793) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxCreate$BufferAsyncSink.next(FluxCreate.java:718) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxCreate$SerializedSink.next(FluxCreate.java:153) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at io.r2dbc.postgresql.client.ReactorNettyClient$Conversation.emit(ReactorNettyClient.java:725) ~[r2dbc-postgresql-0.8.5.RELEASE.jar:0.8.5.RELEASE]
    at io.r2dbc.postgresql.client.ReactorNettyClient$BackendMessageSubscriber.emit(ReactorNettyClient.java:976) ~[r2dbc-postgresql-0.8.5.RELEASE.jar:0.8.5.RELEASE]
    at io.r2dbc.postgresql.client.ReactorNettyClient$BackendMessageSubscriber.onNext(ReactorNettyClient.java:850) ~[r2dbc-postgresql-0.8.5.RELEASE.jar:0.8.5.RELEASE]
    at io.r2dbc.postgresql.client.ReactorNettyClient$BackendMessageSubscriber.onNext(ReactorNettyClient.java:757) ~[r2dbc-postgresql-0.8.5.RELEASE.jar:0.8.5.RELEASE]
    at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:112) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxPeekFuseable$PeekConditionalSubscriber.onNext(FluxPeekFuseable.java:845) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onNext(FluxMap.java:213) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onNext(FluxMap.java:213) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    at reactor.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:256) ~[reactor-netty-0.9.12.RELEASE.jar:0.9.12.RELEASE]
    at reactor.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:362) ~[reactor-netty-0.9.12.RELEASE.jar:0.9.12.RELEASE]
    at reactor.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:358) ~[reactor-netty-0.9.12.RELEASE.jar:0.9.12.RELEASE]
    at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:96) ~[reactor-netty-0.9.12.RELEASE.jar:0.9.12.RELEASE]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) ~[netty-codec-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:311) ~[netty-codec-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:425) ~[netty-codec-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276) ~[netty-codec-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) ~[netty-transport-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.util.concurrent.SingleThreadEventExecutor.run(SingleThreadEventExecutor.java:989) ~[netty-common-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.util.internal.ThreadExecutorMap.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.52.Final.jar:4.1.52.Final]
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.52.Final.jar:4.1.52.Final]
    at java.lang.Thread.run(Unknown Source) ~[na:1.8.0_221]
Caused by: io.r2dbc.postgresql.ExceptionFactory$PostgresqlDataIntegrityViolationException: duplicate key value violated Unique-Constraint »person_pkey«
    at io.r2dbc.postgresql.ExceptionFactory.createException(ExceptionFactory.java:91) ~[r2dbc-postgresql-0.8.5.RELEASE.jar:0.8.5.RELEASE]
    at io.r2dbc.postgresql.ExceptionFactory.handleErrorResponse(ExceptionFactory.java:110) ~[r2dbc-postgresql-0.8.5.RELEASE.jar:0.8.5.RELEASE]
    at io.r2dbc.postgresql.PostgresqlResult.lambda$map(PostgresqlResult.java:100) ~[r2dbc-postgresql-0.8.5.RELEASE.jar:0.8.5.RELEASE]
    at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:96) ~[reactor-core-3.3.10.RELEASE.jar:3.3.10.RELEASE]
    ... 42 common frames omitted

这是我使用 SpringBoot 进行响应式编程的第一步，我非常感谢每一个有用的提示。

如果您需要更多信息，请告诉我。

提前致谢。

Answer 1

我认为这是因为你的id是long，不是Long。

只要有它，它总是有一个值，并且因为 Spring Data R2DBC 不知道您的模式并且它会自动生成，所以它在插入语句中包含该值。

如果将其切换为 Long，因为如果不设置它将为 null，则不应将其包含在插入语句中（或者更糟糕的是将其设置为 null）并且该值应由数据库生成，因为您配置的默认值。

Spring 由于重复键异常，启动反应存储库测试总是失败

Spring Boot Reactive repository test fails always, due to duplicated key exception

postgresql

data-integrity

reactive-programming

spring-boot