【发布时间】：2017-08-19 21:58:39
【问题描述】：
我有一个正常工作的 Spring Boot 应用程序，我正在尝试从 Spring Boot 1.3.8.RELEASE 迁移到 1.5.2.RELEASE。在我工作的 1.3.8.RELEASE 轨道中，我已经在使用休眠 5，即我在 y pom 中有以下依赖项
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-java8</artifactId>
<version>${hibernate.version}</version>
</dependency>
使用 Spring boot 1.5 这不是必需的，因此我将其更改为默认的 hibernate 5 依赖项，即 hibernate-core 并删除了版本声明。
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
</dependency>
但是我不知道为什么我的测试说：
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.hibernate.SessionFactory' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1486) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
我肯定配置了会话工厂
@Profile("Development")
@Configuration
@EnableTransactionManagement
@Order(value=1)
public class PersistenceConfigDevelopment {
@Bean
public org.apache.commons.dbcp.BasicDataSource dataSourceReadWrite() {
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName("org.postgresql.Driver");
dataSource.setUrl("jdbc:postgresql://localhost:5432/testDB");
dataSource.setUsername("admin");
dataSource.setPassword("veryBigSecret!");
dataSource.setInitialSize(20);
dataSource.setMaxActive(-1);
return dataSource;
}
@Bean
public org.springframework.orm.hibernate5.LocalSessionFactoryBean sessionFactory() {
org.springframework.orm.hibernate5.LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
sessionFactory.setDataSource(this.dataSourceReadWrite());
sessionFactory.setPackagesToScan("org.testApp");
sessionFactory.setHibernateProperties(hibernateProperties());
return sessionFactory;
}
@Bean
public org.springframework.orm.hibernate5.HibernateTransactionManager transactionManager() {
HibernateTransactionManager txManager = new HibernateTransactionManager();
txManager.setSessionFactory(sessionFactory().getObject());
return txManager;
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
@Bean
public Properties hibernateProperties() {
return new Properties() {
{
setProperty("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
setProperty("hibernate.chach.provider_class", "org.hibernate.cache.NoCacheProvider");
setProperty("hibernate.show_sql", "true");
setProperty("hibernate.hbm2ddl.auto", "create-drop");
setProperty("hibernate.cache.use_second_level_cache", "false");
setProperty("hibernate.cache.use_query_cache", "false");
//isolation level
setProperty("hibernate.connection.isolation", String.valueOf(Connection.TRANSACTION_SERIALIZABLE));
}
};
}
}
这是我如何开始我的 spring boot 1.5.2 测试：
@RunWith(SpringRunner.class)
@TestExecutionListeners(listeners={
DependencyInjectionTestExecutionListener.class,
DirtiesContextTestExecutionListener.class,
WithSecurityContextTestExecutionListener.class
}
)
@SpringBootTest(
classes = {
SecurityWebApplicationInitializerDevelopment.class,
SecurityConfigDevelopment.class,
TomcatEmbededDevelopmentProfile.class,
Internationalization.class,
MVCConfigDevelopment.class,
PersistenceConfigDevelopment.class,
}
)
@WebAppConfiguration
@ActiveProfiles(TestAppConfigurationProfiles.DEVELOPMENT_PROFILE)
@WithMockUser(username="alice",roles={"USER","ADMIN"} )
public class mainTests {
......
出于某种原因，Spring boot 1.5 找不到我的会话工厂。但为什么？我是否使用了错误的依赖项？我已将 Hibernate5 会话工厂和事务管理器配置为 bean。
这是我的 pom 的一部分：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
</parent>
<groupId>test</groupId>
<artifactId>testApp</artifactId>
<name>testApp</name>
<version>1.0-SNAPSHOT</version>
<properties>
<hibernate.version>5.2.9.Final</hibernate.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven-compiler-plugin.version>3.6.1</maven-compiler-plugin.version>
<maven-source-plugin.version>3.0.1</maven-source-plugin.version>
<maven-javadoc-plugin.version>2.10.4</maven-javadoc-plugin.version>
<maven-install-plugin.version>2.5.2</maven-install-plugin.version>
<maven-assembly-plugin.version>3.0.0</maven-assembly-plugin.version>
<java.version>1.8</java.version>
<start-class>org.testApp.core.Application</start-class>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.batch</groupId>
<artifactId>spring-batch-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<exclusions>
<exclusion>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jdbc</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.batch</groupId>
<artifactId>spring-batch-core</artifactId>
</dependency>
<!-- Thymeleaf -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>nz.net.ultraq.thymeleaf</groupId>
<artifactId>thymeleaf-layout-dialect</artifactId>
</dependency>
<!-- Tomcat -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-websocket</artifactId>
</dependency>
<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
</dependency>
<!-- Apache -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-gemfire</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
</dependency>
</dependencies>
</project>
这是我如何启动我的应用程序
@ComponentScan({"org.testApp.*"})
@Configuration
@EnableAutoConfiguration
@EnableWebSocket
@SpringBootApplication
public class Application extends SpringBootServletInitializer {
...
2017 年 3 月 29 日补充
在分析启动配置后，我发现了这一行：
2017-03-29 10:45:01.084 INFO 11022 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'sessionFactory' with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=persistenceConfigDevelopment; factoryMethodName=sessionFactory; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/testApp/config/persistence/PersistenceConfigDevelopment.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.data.neo4j.Neo4jDataAutoConfiguration; factoryMethodName=sessionFactory; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/data/neo4j/Neo4jDataAutoConfiguration.class]]
我不明白为什么 Neo4jDataAutoConfiguration.class 会覆盖我的自定义 persistenceConfigDevelopment bean。
此外，如果我删除了我的主要 Application 类上的 @EnableAutoConfiguration 和 @SpringBootApplication，那么应用程序启动并且正确的会话工厂正在成功实例化，但是它失败了，因为它找不到 bean InternalResourceViewResolver ，但这是意料之中的，因为通常@EnableAutoConfiguration 正在处理这些bean。
`Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type` 'org.springframework.web.servlet.view.InternalResourceViewResolver' available
【问题讨论】：
-
Neo4J 自动配置支持添加了一个名为
sessionFactory的 bean，覆盖了您配置的 bean。 -
@M.如果我在我的配置中明确配置它，即根据上面的 PersistenceConfigDevelopment 类，Deinum 为什么要添加它。这对我来说没有任何意义。默认行为应该是，如果用户配置了会话工厂，即休眠，那么 Neo4J 不应该做任何事情。
-
我认为这对于很多 spring 用户来说都是一个问题，因为 spring 不应该覆盖手动配置的 beans。
-
覆盖是由于命名冲突。只能有一个名为
sessionFactory的 bean（我没有检查 neo4j 自动配置，但我怀疑它创建了一个名为 sessionFactory 的 ne04j bean）。哪一个胜出取决于配置类的加载顺序。 -
据我所知，在春季没有办法说哪个 bean 首先加载，至少每个注释都没有办法，它可以告诉 Neo4j 第二个加载。但这并没有改变这样一个事实，即 Neo4j 自动配置的业务逻辑应该足够智能以检查用户是否配置了名称为 sessionFactory 的@bean，然后 Neo4j 不应该实例化他自己的同名 bean 并且应该返回关闭。
标签： spring-boot spring-data hibernate-5.x spring-boot-test