Axon 自动创建的表格有什么用？
What are the auto-created tables by Axon for?
在 table 弹出之前，我首先在 Spring 组件中添加了一个 @EventHandler 注释方法，如下所示：
@RequiredArgsConstructor
@Component
@ProcessingGroup("member-info")
public class MemberProjector {
private final MemberRepo repo;
@EventHandler
public void handle(CreatedPaymentEvent evt){
// TODO : user valid
}
// ...
}
当我 运行 应用程序时，我遇到了以下异常：
org.springframework.context.ApplicationContextException: Failed to start bean 'org.axonframework.spring.config.AxonConfiguration'; nested exception is org.axonframework.lifecycle.LifecycleHandlerInvocationException: One of the start handlers in phase [null] failed with the following exception:
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.DefaultLifecycleProcessor.access0(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.9.jar:5.3.9]
at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na]
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) ~[spring-boot-2.5.3.jar:2.5.3]
at com.payment.PaymentApplication.main(PaymentApplication.java:9) ~[main/:na]
Caused by: org.axonframework.lifecycle.LifecycleHandlerInvocationException: One of the start handlers in phase [null] failed with the following exception:
at org.axonframework.config.DefaultConfigurer.lambda$invokeStartHandlers(DefaultConfigurer.java:693) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.config.DefaultConfigurer.invokeLifecycleHandlers(DefaultConfigurer.java:744) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.config.DefaultConfigurer.invokeStartHandlers(DefaultConfigurer.java:687) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.config.DefaultConfigurer$ConfigurationImpl.start(DefaultConfigurer.java:811) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.spring.config.AxonConfiguration.start(AxonConfiguration.java:199) ~[axon-spring-4.5.3.jar:4.5.3]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) ~[spring-context-5.3.9.jar:5.3.9]
... 14 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.axonframework.lifecycle.LifecycleHandlerInvocationException: Failed during invocation of lifecycle handler [public void org.axonframework.axonserver.connector.processor.EventProcessorControlService.start()] on component [org.axonframework.axonserver.connector.processor.EventProcessorControlService@24ea71d]
at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2093) ~[na:na]
at org.axonframework.config.DefaultConfigurer.invokeLifecycleHandlers(DefaultConfigurer.java:742) ~[axon-configuration-4.5.3.jar:4.5.3]
... 18 common frames omitted
Caused by: org.axonframework.lifecycle.LifecycleHandlerInvocationException: Failed during invocation of lifecycle handler [public void org.axonframework.axonserver.connector.processor.EventProcessorControlService.start()] on component [org.axonframework.axonserver.connector.processor.EventProcessorControlService@24ea71d]
at org.axonframework.config.LifecycleHandlerInspector.invokeAndReturn(LifecycleHandlerInspector.java:128) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.config.LifecycleHandlerInspector.lambda$null[=11=](LifecycleHandlerInspector.java:91) ~[axon-configuration-4.5.3.jar:4.5.3]
at java.base/java.util.stream.ReferencePipeline.accept(ReferencePipeline.java:195) ~[na:na]
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na]
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na]
at java.base/java.util.stream.ReferencePipeline.reduce(ReferencePipeline.java:558) ~[na:na]
at org.axonframework.config.DefaultConfigurer.invokeLifecycleHandlers(DefaultConfigurer.java:740) ~[axon-configuration-4.5.3.jar:4.5.3]
... 18 common frames omitted
Caused by: java.lang.reflect.InvocationTargetException: null
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.axonframework.config.LifecycleHandlerInspector.invokeAndReturn(LifecycleHandlerInspector.java:121) ~[axon-configuration-4.5.3.jar:4.5.3]
... 27 common frames omitted
Caused by: org.axonframework.eventhandling.tokenstore.UnableToRetrieveIdentifierException: Exception occurred while trying to establish storage identifier
at org.axonframework.eventhandling.tokenstore.jpa.JpaTokenStore.retrieveStorageIdentifier(JpaTokenStore.java:265) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.eventhandling.TrackingEventProcessor.lambda$calculateIdentifier(TrackingEventProcessor.java:245) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.common.transaction.TransactionManager.fetchInTransaction(TransactionManager.java:70) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.eventhandling.TrackingEventProcessor.calculateIdentifier(TrackingEventProcessor.java:244) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.eventhandling.TrackingEventProcessor.lambda$getTokenStoreIdentifier(TrackingEventProcessor.java:240) ~[axon-messaging-4.5.3.jar:4.5.3]
at java.base/java.util.concurrent.atomic.AtomicReference.updateAndGet(AtomicReference.java:209) ~[na:na]
at org.axonframework.eventhandling.TrackingEventProcessor.getTokenStoreIdentifier(TrackingEventProcessor.java:240) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.axonserver.connector.processor.StreamingEventProcessorInfoMessage.describe(StreamingEventProcessorInfoMessage.java:58) ~[axon-server-connector-4.5.3.jar:4.5.3]
at org.axonframework.axonserver.connector.processor.EventProcessorControlService.lambda$infoSupplier(EventProcessorControlService.java:115) ~[axon-server-connector-4.5.3.jar:4.5.3]
at io.axoniq.axonserver.connector.impl.ControlChannelImpl.lambda$sendScheduledProcessorInfo(ControlChannelImpl.java:245) ~[axonserver-connector-java-4.5.2.jar:4.5.2]
at java.base/java.util.concurrent.ConcurrentHashMap$ValuesView.forEach(ConcurrentHashMap.java:4772) ~[na:na]
at io.axoniq.axonserver.connector.impl.ControlChannelImpl.sendScheduledProcessorInfo(ControlChannelImpl.java:245) ~[axonserver-connector-java-4.5.2.jar:4.5.2]
at io.axoniq.axonserver.connector.impl.ControlChannelImpl.registerEventProcessor(ControlChannelImpl.java:226) ~[axonserver-connector-java-4.5.2.jar:4.5.2]
at org.axonframework.axonserver.connector.processor.EventProcessorControlService.lambda$start[=11=](EventProcessorControlService.java:105) ~[axon-server-connector-4.5.3.jar:4.5.3]
at java.base/java.util.HashMap.forEach(HashMap.java:1338) ~[na:na]
at org.axonframework.axonserver.connector.processor.EventProcessorControlService.start(EventProcessorControlService.java:103) ~[axon-server-connector-4.5.3.jar:4.5.3]
... 32 common frames omitted
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3357) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3294) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:311) ~[spring-orm-5.3.9.jar:5.3.9]
at com.sun.proxy.$Proxy101.find(Unknown Source) ~[na:na]
at org.axonframework.eventhandling.tokenstore.jpa.JpaTokenStore.getConfig(JpaTokenStore.java:272) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.eventhandling.tokenstore.jpa.JpaTokenStore.retrieveStorageIdentifier(JpaTokenStore.java:263) ~[axon-messaging-4.5.3.jar:4.5.3]
... 47 common frames omitted
Caused by: org.hibernate.exception.SQLGrammarException: could not prepare statement
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:151) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.prepareQueryStatement(AbstractLoadPlanBasedLoader.java:198) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeQueryStatement(AbstractLoadPlanBasedLoader.java:162) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:104) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:285) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.doLoad(AbstractEntityPersister.java:4437) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4427) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:576) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:544) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:208) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:332) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:108) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:74) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:110) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.fireLoadNoChecks(SessionImpl.java:1186) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1175) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.access00(SessionImpl.java:193) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.doLoad(SessionImpl.java:2779) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.lambda$load(SessionImpl.java:2767) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.perform(SessionImpl.java:2723) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2767) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3322) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
... 56 common frames omitted
Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "TOKEN_ENTRY" not found; SQL statement:
select tokenentry0_.processor_name as processo1_3_0_, tokenentry0_.segment as segment2_3_0_, tokenentry0_.owner as owner3_3_0_, tokenentry0_.timestamp as timestam4_3_0_, tokenentry0_.token as token5_3_0_, tokenentry0_.token_type as token_ty6_3_0_ from token_entry tokenentry0_ where tokenentry0_.processor_name=? and tokenentry0_.segment=? [42102-200]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:453) ~[h2-1.4.200.jar:1.4.200]
at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) ~[HikariCP-4.0.3.jar:na]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.doPrepare(StatementPreparerImpl.java:149) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
... 78 common frames omitted
最后，这是我的 application.yml:
server:
port: 8282
spring:
h2:
console:
enabled: true
settings:
trace : true
output.ansi.enabled: always
datasource:
url: jdbc:h2:tcp://localhost/~/delivery/payment
username: sa
password:
driver-class-name: org.h2.Driver
sql:
init :
mode : always
data-locations : classpath:data.sql
schema-locations : classpath:schema.sql
jpa:
hibernate.ddl-auto: none
generate-ddl: true
database-platform: org.hibernate.dialect.H2Dialect
application:
name: payment-service
在这些错误信息中我发现：
Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "TOKEN_ENTRY" not found
所以我尝试创建 table，我一直在尝试这个和那个，table 是自动创建的。但我不知道为什么这些 table 是自动创建的。
//会员就是我的实体
在h2-DB中创建这样的table是否正常？
我是 Axon 的初学者，我不知道从哪里开始。
这些 table 是自动创建的，因为您将 Axon 的 Spring Boot Starter 与存储解决方案结合使用。 Axon 的自动配置发现您拥有持久存储的事实，因此期望您希望拥有 Axon 所需的默认实体。
让我列出它们的用途：
SAGA_ENTRY - 存储序列化的传奇。阅读有关 Sagas 的更多信息 here。ASSOCIATION_VALUE_ENTRY - 存储从事件标识符到传奇标识符的关联。因此，它是 Axon 将您的事件与您的传奇相关联的查找 table。TOKEN_ENTRY - 存储您的 StreamingEventProcessors 用于处理事件的序列化 TrackingToken 实例。简而言之，这些令牌通过事件流跟踪进度。阅读有关流式处理器和跟踪令牌的更多信息 here。
Is it normal for a table like this to be created in the h2-DB?
当使用 Axon 的 Spring 自动配置时，是的，它是。 Axon 预计您需要所有这些，因此它是预先创建的。
I'm a beginner at Axon, and I don't know where to start.
enter link description hereYou should know that there is an Axon training you can follow (as found here). Either attend one of the live sessions you can find here or go for the AxonIQ Academy.
在 table 弹出之前，我首先在 Spring 组件中添加了一个 @EventHandler 注释方法，如下所示：
@RequiredArgsConstructor
@Component
@ProcessingGroup("member-info")
public class MemberProjector {
private final MemberRepo repo;
@EventHandler
public void handle(CreatedPaymentEvent evt){
// TODO : user valid
}
// ...
}
当我 运行 应用程序时，我遇到了以下异常：
org.springframework.context.ApplicationContextException: Failed to start bean 'org.axonframework.spring.config.AxonConfiguration'; nested exception is org.axonframework.lifecycle.LifecycleHandlerInvocationException: One of the start handlers in phase [null] failed with the following exception:
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.DefaultLifecycleProcessor.access0(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.9.jar:5.3.9]
at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na]
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) ~[spring-boot-2.5.3.jar:2.5.3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) ~[spring-boot-2.5.3.jar:2.5.3]
at com.payment.PaymentApplication.main(PaymentApplication.java:9) ~[main/:na]
Caused by: org.axonframework.lifecycle.LifecycleHandlerInvocationException: One of the start handlers in phase [null] failed with the following exception:
at org.axonframework.config.DefaultConfigurer.lambda$invokeStartHandlers(DefaultConfigurer.java:693) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.config.DefaultConfigurer.invokeLifecycleHandlers(DefaultConfigurer.java:744) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.config.DefaultConfigurer.invokeStartHandlers(DefaultConfigurer.java:687) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.config.DefaultConfigurer$ConfigurationImpl.start(DefaultConfigurer.java:811) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.spring.config.AxonConfiguration.start(AxonConfiguration.java:199) ~[axon-spring-4.5.3.jar:4.5.3]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) ~[spring-context-5.3.9.jar:5.3.9]
... 14 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.axonframework.lifecycle.LifecycleHandlerInvocationException: Failed during invocation of lifecycle handler [public void org.axonframework.axonserver.connector.processor.EventProcessorControlService.start()] on component [org.axonframework.axonserver.connector.processor.EventProcessorControlService@24ea71d]
at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395) ~[na:na]
at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2093) ~[na:na]
at org.axonframework.config.DefaultConfigurer.invokeLifecycleHandlers(DefaultConfigurer.java:742) ~[axon-configuration-4.5.3.jar:4.5.3]
... 18 common frames omitted
Caused by: org.axonframework.lifecycle.LifecycleHandlerInvocationException: Failed during invocation of lifecycle handler [public void org.axonframework.axonserver.connector.processor.EventProcessorControlService.start()] on component [org.axonframework.axonserver.connector.processor.EventProcessorControlService@24ea71d]
at org.axonframework.config.LifecycleHandlerInspector.invokeAndReturn(LifecycleHandlerInspector.java:128) ~[axon-configuration-4.5.3.jar:4.5.3]
at org.axonframework.config.LifecycleHandlerInspector.lambda$null[=11=](LifecycleHandlerInspector.java:91) ~[axon-configuration-4.5.3.jar:4.5.3]
at java.base/java.util.stream.ReferencePipeline.accept(ReferencePipeline.java:195) ~[na:na]
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na]
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na]
at java.base/java.util.stream.ReferencePipeline.reduce(ReferencePipeline.java:558) ~[na:na]
at org.axonframework.config.DefaultConfigurer.invokeLifecycleHandlers(DefaultConfigurer.java:740) ~[axon-configuration-4.5.3.jar:4.5.3]
... 18 common frames omitted
Caused by: java.lang.reflect.InvocationTargetException: null
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.axonframework.config.LifecycleHandlerInspector.invokeAndReturn(LifecycleHandlerInspector.java:121) ~[axon-configuration-4.5.3.jar:4.5.3]
... 27 common frames omitted
Caused by: org.axonframework.eventhandling.tokenstore.UnableToRetrieveIdentifierException: Exception occurred while trying to establish storage identifier
at org.axonframework.eventhandling.tokenstore.jpa.JpaTokenStore.retrieveStorageIdentifier(JpaTokenStore.java:265) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.eventhandling.TrackingEventProcessor.lambda$calculateIdentifier(TrackingEventProcessor.java:245) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.common.transaction.TransactionManager.fetchInTransaction(TransactionManager.java:70) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.eventhandling.TrackingEventProcessor.calculateIdentifier(TrackingEventProcessor.java:244) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.eventhandling.TrackingEventProcessor.lambda$getTokenStoreIdentifier(TrackingEventProcessor.java:240) ~[axon-messaging-4.5.3.jar:4.5.3]
at java.base/java.util.concurrent.atomic.AtomicReference.updateAndGet(AtomicReference.java:209) ~[na:na]
at org.axonframework.eventhandling.TrackingEventProcessor.getTokenStoreIdentifier(TrackingEventProcessor.java:240) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.axonserver.connector.processor.StreamingEventProcessorInfoMessage.describe(StreamingEventProcessorInfoMessage.java:58) ~[axon-server-connector-4.5.3.jar:4.5.3]
at org.axonframework.axonserver.connector.processor.EventProcessorControlService.lambda$infoSupplier(EventProcessorControlService.java:115) ~[axon-server-connector-4.5.3.jar:4.5.3]
at io.axoniq.axonserver.connector.impl.ControlChannelImpl.lambda$sendScheduledProcessorInfo(ControlChannelImpl.java:245) ~[axonserver-connector-java-4.5.2.jar:4.5.2]
at java.base/java.util.concurrent.ConcurrentHashMap$ValuesView.forEach(ConcurrentHashMap.java:4772) ~[na:na]
at io.axoniq.axonserver.connector.impl.ControlChannelImpl.sendScheduledProcessorInfo(ControlChannelImpl.java:245) ~[axonserver-connector-java-4.5.2.jar:4.5.2]
at io.axoniq.axonserver.connector.impl.ControlChannelImpl.registerEventProcessor(ControlChannelImpl.java:226) ~[axonserver-connector-java-4.5.2.jar:4.5.2]
at org.axonframework.axonserver.connector.processor.EventProcessorControlService.lambda$start[=11=](EventProcessorControlService.java:105) ~[axon-server-connector-4.5.3.jar:4.5.3]
at java.base/java.util.HashMap.forEach(HashMap.java:1338) ~[na:na]
at org.axonframework.axonserver.connector.processor.EventProcessorControlService.start(EventProcessorControlService.java:103) ~[axon-server-connector-4.5.3.jar:4.5.3]
... 32 common frames omitted
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3357) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3294) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:311) ~[spring-orm-5.3.9.jar:5.3.9]
at com.sun.proxy.$Proxy101.find(Unknown Source) ~[na:na]
at org.axonframework.eventhandling.tokenstore.jpa.JpaTokenStore.getConfig(JpaTokenStore.java:272) ~[axon-messaging-4.5.3.jar:4.5.3]
at org.axonframework.eventhandling.tokenstore.jpa.JpaTokenStore.retrieveStorageIdentifier(JpaTokenStore.java:263) ~[axon-messaging-4.5.3.jar:4.5.3]
... 47 common frames omitted
Caused by: org.hibernate.exception.SQLGrammarException: could not prepare statement
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:151) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.prepareQueryStatement(AbstractLoadPlanBasedLoader.java:198) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeQueryStatement(AbstractLoadPlanBasedLoader.java:162) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:104) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:285) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.doLoad(AbstractEntityPersister.java:4437) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4427) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:576) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:544) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:208) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:332) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:108) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:74) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:110) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.fireLoadNoChecks(SessionImpl.java:1186) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1175) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.access00(SessionImpl.java:193) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.doLoad(SessionImpl.java:2779) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.lambda$load(SessionImpl.java:2767) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.perform(SessionImpl.java:2723) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2767) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3322) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
... 56 common frames omitted
Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "TOKEN_ENTRY" not found; SQL statement:
select tokenentry0_.processor_name as processo1_3_0_, tokenentry0_.segment as segment2_3_0_, tokenentry0_.owner as owner3_3_0_, tokenentry0_.timestamp as timestam4_3_0_, tokenentry0_.token as token5_3_0_, tokenentry0_.token_type as token_ty6_3_0_ from token_entry tokenentry0_ where tokenentry0_.processor_name=? and tokenentry0_.segment=? [42102-200]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:453) ~[h2-1.4.200.jar:1.4.200]
at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) ~[HikariCP-4.0.3.jar:na]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.doPrepare(StatementPreparerImpl.java:149) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
... 78 common frames omitted
最后，这是我的 application.yml:
server:
port: 8282
spring:
h2:
console:
enabled: true
settings:
trace : true
output.ansi.enabled: always
datasource:
url: jdbc:h2:tcp://localhost/~/delivery/payment
username: sa
password:
driver-class-name: org.h2.Driver
sql:
init :
mode : always
data-locations : classpath:data.sql
schema-locations : classpath:schema.sql
jpa:
hibernate.ddl-auto: none
generate-ddl: true
database-platform: org.hibernate.dialect.H2Dialect
application:
name: payment-service
在这些错误信息中我发现：
Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "TOKEN_ENTRY" not found
所以我尝试创建 table，我一直在尝试这个和那个，table 是自动创建的。但我不知道为什么这些 table 是自动创建的。
//会员就是我的实体
在h2-DB中创建这样的table是否正常？ 我是 Axon 的初学者，我不知道从哪里开始。
这些 table 是自动创建的，因为您将 Axon 的 Spring Boot Starter 与存储解决方案结合使用。 Axon 的自动配置发现您拥有持久存储的事实，因此期望您希望拥有 Axon 所需的默认实体。
让我列出它们的用途：
SAGA_ENTRY- 存储序列化的传奇。阅读有关 Sagas 的更多信息 here。ASSOCIATION_VALUE_ENTRY- 存储从事件标识符到传奇标识符的关联。因此，它是 Axon 将您的事件与您的传奇相关联的查找 table。TOKEN_ENTRY- 存储您的StreamingEventProcessors用于处理事件的序列化TrackingToken实例。简而言之，这些令牌通过事件流跟踪进度。阅读有关流式处理器和跟踪令牌的更多信息 here。
Is it normal for a table like this to be created in the h2-DB?
当使用 Axon 的 Spring 自动配置时，是的，它是。 Axon 预计您需要所有这些，因此它是预先创建的。
I'm a beginner at Axon, and I don't know where to start.
enter link description hereYou should know that there is an Axon training you can follow (as found here). Either attend one of the live sessions you can find here or go for the AxonIQ Academy.