无法自动装配字段：private javax.sql.DataSource

时间：2015-12-16 01:05:12

标签： spring spring-boot

我有一个简单的基于jpa的spring boot项目

@EnableJpaRepositories(basePackages = "de.dahilein.resourcecal.repos")
@Configuration
@ComponentScan
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
public class ResourceCalApplication {
    public static void main(String[] args) {
        SpringApplication.run(ResourceCalApplication.class, args);
    }

    @Bean
    public LocalEntityManagerFactoryBean entityManagerFactory() {
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("resourcecal");
    return emf;
    }

    @Bean
    public PlatformTransactionManager transactionManager() {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(entityManagerFactory());
        return transactionManager;
    }
}

我得到以下堆栈跟踪

01:16:50.072 [localhost-startStop-1] ERROR o.s.web.context.ContextLoader - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:838) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) [spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4810) [catalina.jar:8.0.30]
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255) [catalina.jar:8.0.30]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.0.30]
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) [catalina.jar:8.0.30]
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) [catalina.jar:8.0.30]
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) [catalina.jar:8.0.30]
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:945) [catalina.jar:8.0.30]
        at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1795) [catalina.jar:8.0.30]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0]
        at java.lang.Thread.run(Thread.java:744) [na:1.8.0]
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        ... 26 common frames omitted
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        ... 28 common frames omitted

没有它我得到：

我的数据源是jndi，名称在persistence.xml中设置

<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
    <persistence-unit name="resourcecal" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <non-jta-data-source>java:comp/env/jdbc/resourcecalDS</non-jta-data-source>

DS在server.xml中定义，并使用ResourceLink链接到context.xml。这一切似乎都有效，因为如果我删除DS或更改jndi名称以进行测试，它会做出相应的反应。

我看到它正在拾取persistence.xml的各种日志

01:54:27.223 [localhost-startStop-2] DEBUG o.h.jpa.internal.util.LogHelper - PersistenceUnitInfo [
    name: resourcecal
    persistence provider classname: org.hibernate.ejb.HibernatePersistence
    classloader: null

和jndi名字。

我错过了什么？

2 个答案:

答案 0 :(得分：0)

您需要在配置中创建一个bean，如下所示：

@Bean
public DataSource dataSource() {
    final JndiDataSourceLookup jndiDataSource= new JndiDataSourceLookup();
    jndiDataSource.setResourceRef(true);
    DataSource dataSource = jndiDataSource.getDataSource("jdbc/resourcecalDS");
    return dataSource;
}

答案 1 :(得分：0)

我遇到了同样的问题，就我而言，我使用的是Spring Boot依赖版本1.4.0，还尝试了最新版本，但是我将其更改为

<version>2.0.5.RELEASE</version>

“ 2.0.5” ..

因此，请检查是否存在相同的错误，然后重新更正。

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