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多个SessionFactory配置因org.springframework.beans.factory.UnsatisfiedDependencyException异常而失败

2019-08-29 19:28:09  阅读：178  来源： 互联网

标签：spring hibernate transactions annotations


我们的应用程序需要处理多个数据库.我们尝试通过Hibernate配置配置多个数据源,并为数据库1添加了两个配置,为数据库2添加了第二个配置.此配置失败,并出现以下异常

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'DB1TransactionManager' defined in class path resource [org/npcc/ccms/config/db/HibernateConfig4DB1.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.hibernate.SessionFactory]: : No qualifying bean of type [org.hibernate.SessionFactory] is defined: expected single matching bean but found 2: AgrgtrSessionFactory,HRSessionFactory,StageSessionFactory; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] is defined: expected single matching bean but found 3: DB1SessionFactory,DB2SessionFactory
org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:747)
    org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:462)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1094)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:989)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:530)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:160)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:947)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    java.lang.Thread.run(Thread.java:745)

root cause

org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] is defined: expected single matching bean but found 2: DB1SessionFactory,DB2SessionFactory
    org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:970)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858)
    org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:811)
    org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:739)
    org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:462)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1094)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:989)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:530)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:160)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:947)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    java.lang.Thread.run(Thread.java:745)

首个数据库配置：

@Configuration
@EnableTransactionManagement
@ComponentScan({ "org.npcc.ccms.config" })
@PropertySource(value = { "classpath:application.properties" })
public class HibernateConfig4DB1 {
    final static Logger logger = LogManager.getLogger(HibernateConfig4DB1.class);

    @Autowired
    private Environment environment;

     @Bean(name="DB1SessionFactory")
    public LocalSessionFactoryBean db1SessionFactory() {
        LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        sessionFactory.setPackagesToScan(new String[] { "org.npcc.ccms.model.db1" });
        sessionFactory.setHibernateProperties(hibernateProperties());
        return sessionFactory;
     }

    @Bean(destroyMethod="")
    public DataSource dataSource() {
        JndiTemplate jndi = new JndiTemplate();
        DataSource dataSource = null;
        try {
            dataSource = (DataSource) jndi.lookup(environment.getRequiredProperty("datasource"));
        } catch (NamingException e) {
            logger.error("NamingException for java:comp/env/jdbc/ccms_cp1_orcl", e);
        }
        return dataSource;
    }

    private Properties hibernateProperties() {
        Properties properties = new Properties();
        properties.put("hibernate.dialect", environment.getRequiredProperty("hibernate.dialect"));
        properties.put("hibernate.show_sql", environment.getRequiredProperty("hibernate.show_sql"));
        properties.put("hibernate.format_sql", environment.getRequiredProperty("hibernate.format_sql"));
        return properties;        
    }

    @Bean(name="DB1TransactionManager")
    @Autowired
    @Qualifier("DB1SessionFactory")
    public HibernateTransactionManager db1TransactionManager(SessionFactory s) {
       HibernateTransactionManager txManager = new HibernateTransactionManager();
       txManager.setSessionFactory(s);
       return txManager;
    }
}

二次数据库配置：

@Configuration
@EnableTransactionManagement
@ComponentScan({ "org.npcc.ccms.config" })
@PropertySource(value = { "classpath:application.properties" })
public class HibernateConfig4DB2 {
    final static Logger logger = LogManager.getLogger(HibernateConfig4DB2.class);

    @Autowired
    private Environment environment;

     @Bean(name="DB2SessionFactory")
    public LocalSessionFactoryBean db2SessionFactory() {
        LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        sessionFactory.setPackagesToScan(new String[] { "org.npcc.ccms.model.db2" });
        sessionFactory.setHibernateProperties(hibernateProperties());
        return sessionFactory;
     }

    @Bean(destroyMethod="")
    public DataSource dataSource() {
        JndiTemplate jndi = new JndiTemplate();
        DataSource dataSource = null;
        try {
            dataSource = (DataSource) jndi.lookup(environment.getRequiredProperty("datasource"));
        } catch (NamingException e) {
            logger.error("NamingException for java:comp/env/jdbc/ccms_cp1_orcl", e);
        }
        return dataSource;
    }

    private Properties hibernateProperties() {
        Properties properties = new Properties();
        properties.put("hibernate.dialect", environment.getRequiredProperty("hibernate.dialect"));
        properties.put("hibernate.show_sql", environment.getRequiredProperty("hibernate.show_sql"));
        properties.put("hibernate.format_sql", environment.getRequiredProperty("hibernate.format_sql"));
        return properties;        
    }

    @Bean(name="DB2TransactionManager")
    @Autowired
    @Qualifier("DB2SessionFactory")
    public HibernateTransactionManager db2TransactionManager(SessionFactory s) {
       HibernateTransactionManager txManager = new HibernateTransactionManager();
       txManager.setSessionFactory(s);
       return txManager;
    }
}

解决方法:

那是因为你在配置中定义了2个SessionFactory而Spring无法猜出要选择哪一个.

你可以自动装配你的sessionFactory并在你的@Bean中使用它：

@Autowired
@Qualifier("DB1SessionFactory")
private SessionFactory sessionFactory;

@Bean(name="DB1TransactionManager")
public HibernateTransactionManager db2TransactionManager() {
   HibernateTransactionManager txManager = new HibernateTransactionManager();
   txManager.setSessionFactory(this.sessionFactory);
   return txManager;
}

要显式选择要使用的bean.

此外,您应该注意,只有一个配置需要保存@EnableTransactionManagement,而且您是组件扫描两次相同的包,这是不必要的.同样,你有2个@PropertySource具有相同的属性文件,只需要一个.

在你的情况下,我将创建一个RootHibernateConfig,包含@ Configuration,@ EnableTransactionManagement,@ ComponentScan({“org.npcc.ccms.config”})和@PropertySource(value = {“classpath：application.properties”})注释@Import with你的HibernateConfig4DB1和HibernateConfig4DB2.

您可以从transactionManager bean方法中删除@Autowired和@Qualifier注释.不要忘记在代码中明确使用所需的transactionManager.

见：http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/transaction/annotation/Transactional.html

Spring – Is it possible to use multiple transaction managers in the same application?

标签：spring,hibernate,transactions,annotations
来源： https://codeday.me/bug/20190829/1763078.html

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