Hibernate反应-弹簧启动-无persistence.xml - DataSource错误
Hibernate反应-弹簧启动-无persistence.xml - DataSource错误
提问于 2021-12-23 19:18:24
我想实现一个反应性的应用程序。我需要以一种反应性的方式访问我的数据库。其中一种方法是使用Hibernate反应性。它基于Vert.X实现了众所周知的基于反应性编程范式的JPA和Hibernate ORM的概念。
我有一个错误：
dependencies {
implementation("org.springframework.boot:spring-boot-starter")
implementation("org.springframework.boot:spring-boot-starter-webflux")
implementation("org.springframework.boot:spring-boot-starter-data-jpa")
implementation("org.jetbrains.kotlin:kotlin-reflect")
implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
implementation("org.hibernate.reactive:hibernate-reactive-core:1.1.1.Final")
implementation("io.vertx:vertx-pg-client:4.2.3")
testImplementation("org.springframework.boot:spring-boot-starter-test")
} private fun hibernateJpaProperties(): Map<String, *> {
val properties = HashMap<String, String>()
properties["hibernate.jdbc.time_zone"] = "UTC"
properties["hibernate.connection.pool_size"] = "10"
properties["hibernate.show_sql"] = "true"
properties["hibernate.format_sql"] = "true"
properties["hibernate.highlight_sql"] = "true"
properties["javax.persistence.schema-generation.database.action"] = "drop-and-create"
return properties
}
@Bean
fun entityManagerFactory(dataSource: DataSource?): LocalContainerEntityManagerFactoryBean? {
val entityManagerFactory = LocalContainerEntityManagerFactoryBean()
entityManagerFactory.setPersistenceProviderClass(org.hibernate.reactive.provider.ReactivePersistenceProvider::class.java)
entityManagerFactory.setPackagesToScan("com.xxxx.xxxx.entities");
entityManagerFactory.setPersistenceUnitName("hibernate-persistence");
if (dataSource != null) {
entityManagerFactory.dataSource = dataSource
}
entityManagerFactory.setJpaPropertyMap(hibernateJpaProperties())
return entityManagerFactory
}
@Bean
fun dataSource(): DataSource {
val dataSourceBuilder = DataSourceBuilder.create()
dataSourceBuilder.driverClassName("org.postgresql.Driver")
dataSourceBuilder.url("jdbc:postgresql://localhost:5432/test")
dataSourceBuilder.username("xxxx")
dataSourceBuilder.password("xxxx")
return dataSourceBuilder.build()
}org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataSourceScriptDatabaseInitializer' defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Unsatisfied dependency expressed through method 'dataSourceScriptDatabaseInitializer' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [com/xxxx/xxxx/config/PersistenceConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.RuntimeException: Failed to load driver class org.postgresql.Driver in either of HikariConfig class loader or Thread context classloader
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154) ~[spring-context-5.3.14.jar:5.3.14]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) ~[spring-context-5.3.14.jar:5.3.14]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.14.jar:5.3.14]
at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:64) ~[spring-boot-2.6.2.jar:2.6.2]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[spring-boot-2.6.2.jar:2.6.2]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) ~[spring-boot-2.6.2.jar:2.6.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:302) ~[spring-boot-2.6.2.jar:2.6.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) ~[spring-boot-2.6.2.jar:2.6.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) ~[spring-boot-2.6.2.jar:2.6.2]
at com.xxxx.xxxx.xxxxApplicationKt.main(xxxxApplication.kt:13) ~[main/:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [com/xxxx/xxxx/config/PersistenceConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.RuntimeException: Failed to load driver class org.postgresql.Driver in either of HikariConfig class loader or Thread context classloader
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1389) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1309) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-5.3.14.jar:5.3.14]
... 21 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.RuntimeException: Failed to load driver class org.postgresql.Driver in either of HikariConfig class loader or Thread context classloader
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.3.14.jar:5.3.14]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-5.3.14.jar:5.3.14]
... 35 common frames omitted
Caused by: java.lang.RuntimeException: Failed to load driver class org.postgresql.Driver in either of HikariConfig class loader or Thread context classloader
at com.zaxxer.hikari.HikariConfig.setDriverClassName(HikariConfig.java:491) ~[HikariCP-4.0.3.jar:na]
at org.springframework.boot.jdbc.DataSourceBuilder$MappedDataSourceProperty.set(DataSourceBuilder.java:460) ~[spring-boot-2.6.2.jar:2.6.2]
at org.springframework.boot.jdbc.DataSourceBuilder$MappedDataSourceProperties.set(DataSourceBuilder.java:355) ~[spring-boot-2.6.2.jar:2.6.2]
at org.springframework.boot.jdbc.DataSourceBuilder.build(DataSourceBuilder.java:181) ~[spring-boot-2.6.2.jar:2.6.2]
at com.xxxx.xxxx.config.PersistenceConfig.dataSource(PersistenceConfig.kt:55) ~[main/:na]
at com.xxxx.xxxx.config.PersistenceConfig$$EnhancerBySpringCGLIB$$2ef6e2ee.CGLIB$dataSource$1(<generated>) ~[main/:na]
at com.xxxx.xxxx.config.PersistenceConfig$$EnhancerBySpringCGLIB$$2ef6e2ee$$FastClassBySpringCGLIB$$34d52a48.invoke(<generated>) ~[main/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.3.14.jar:5.3.14]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.3.14.jar:5.3.14]
at com.xxxx.xxxx.config.PersistenceConfig$$EnhancerBySpringCGLIB$$2ef6e2ee.dataSource(<generated>) ~[main/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[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:568) ~[na:na]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.14.jar:5.3.14]
... 36 common frames omitted为什么会有这个错误？我尝试在没有persistece.xml的情况下使用"vertx-pg-client“和"Hibernate Reactive”。
回答 1
Stack Overflow用户
发布于 2022-03-16 07:53:35
我定义了如下的spring配置
persistence.xml -定义没有dataSource信息的实体和选项。
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="default">
<provider>org.hibernate.reactive.provider.ReactivePersistenceProvider</provider>
<class>com.hpcnt.workshop.hibernate.reactive.model.Author</class>
<class>com.hpcnt.workshop.hibernate.reactive.model.Book</class>
<properties>
<!-- The Vert.x SQL Client connection pool size -->
<property name="hibernate.connection.pool_size" value="10"/>
<!-- Automatic schema export -->
<property name="javax.persistence.schema-generation.database.action" value="drop-and-create"/>
<!-- SQL statement logging -->
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.highlight_sql" value="true"/>
</properties>
</persistence-unit>
</persistence>并使用hibernate属性定义Spring配置类，包括dataSource设置。
@Configuration
class HibernateReactiveConfiguration {
companion object: KLogging() {
// MySQL with TestContainers for Testing
private val mysql = MySQLServer(useDefaultPort = true).apply { start() }
}
@Bean
fun entityManagerFactory(provider: PersistenceProvider): EntityManagerFactory {
return Persistence.createEntityManagerFactory("default", hibernateJpaProperties())
}
private fun hibernateJpaProperties(): Map<String, Any?> {
val props = mutableMapOf<String, Any?>()
props["javax.persistence.jdbc.url"] = mysql.jdbcUrl
props["javax.persistence.jdbc.user"] = mysql.username
props["javax.persistence.jdbc.password"] = mysql.password
props["javax.persistence.schema-generation.database.action"] = "drop-and-create"
props["hibernate.highlight_sql"] = true
return props
}
}这是工作！
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原文链接：
https://stackoverflow.com/questions/70466550
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