запуск загрузки загрузочного загрузочного окна с двумя источниками данных

Question

Я использую два разных datasources для MySQL в моем приложении загрузки Spring. Контейнер не запускается с ошибкой ниже. Я также попытался переключить один из источников данных на H2. Я все равно получаю такую ​​же ошибку.

Весь исходный код доступен here

SRC/главная/Java/application.properties

#datasource 
spring.datasource.username=test 
spring.datasource.url=jdbc:mysql://localhost:3306/user_table 
spring.datasource.password=test 
spring.datasource.driver-class-name=com.mysql.jdbc.Driver 


##secondary Datasource 
#spring.sec.datasource.username=test 
#spring.sec.datasource.url=jdbc:mysql://localhost:3306/comp_table 
#spring.sec.datasource.password=test 
#spring.sec.datasource.driver-class-name=com.mysql.jdbc.Driver 

#secondary Datasource 
spring.sec.datasource.url=jdbc:h2:mem:AZ;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE 
spring.sec.datasource.driverClassName=org.h2.Driver 
spring.sec.datasource.username=sa 
spring.sec.datasource.password= 
spring.sec.jpa.database-platform=org.hibernate.dialect.H2Dialect 

SRC/главная/Java/COM/компании/Foo/Config/DBConfig.java

@Configuration 
public class DBConfig { 


    @Bean(name="priDataSource") 
    @Primary 
    @ConfigurationProperties(prefix="spring.datasource") 
    public DataSource priDataSource() { 
     return DataSourceBuilder.create().build(); 
    } 


    @Bean(name = "secDataSource") 
    @ConfigurationProperties(prefix="spring.sec.datasource") 
    public DataSource secDataSource() { 
     return DataSourceBuilder.create().build(); 
    } 

    @Bean(name = "jdbcPriTemplate") 
    @Autowired 
    public JdbcTemplate jdbcPriTemplate(@Qualifier("priDataSource") DataSource hostds) { 
     return new JdbcTemplate(hostds); 
    } 

    @Bean(name = "jdbcSecTemplate") 
    @Autowired 
    public JdbcTemplate jdbcSecTemplate(@Qualifier("secDataSource") DataSource secDataSource) { 
     return new JdbcTemplate(secDataSource); 
    } 

} 

SRC/главная/Java/COM/компании/Foo/A pplication.java

@SpringBootApplication 
public class Application { 

    public static void main(String[] args) { 
     SpringApplication.run(Application.class, args); 
    } 
} 

ОШИБКА

2016-08-16 15:37:28.186 WARN 22600 --- [   main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: Unable to resolve persistence unit root URL 
2016-08-16 15:37:28.192 INFO 22600 --- [   main] o.apache.catalina.core.StandardService : Stopping service Tomcat 
2016-08-16 15:37:28.212 INFO 22600 --- [   main] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report enable debug logging (start with --debug) 


2016-08-16 15:37:28.240 ERROR 22600 --- [   main] o.s.boot.SpringApplication    : Application startup failed 

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: Unable to resolve persistence unit root URL 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1076) ~[spring-context-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:851) ~[spring-context-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) ~[spring-context-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE] 
     at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE] 
     at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE] 
     at org.springframework.boot.SpringApplication.run(SpringApplication.java:313) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE] 
     at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE] 
     at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE] 
     at com.company.foo.Application.main(Application.java:10) [classes!/:na] 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_102] 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_102] 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_102] 
     at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_102] 
     at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [sample-proj-1.0.0-SNAPSHOT.jar:na] 
     at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [sample-proj-1.0.0-SNAPSHOT.jar:na] 
     at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [sample-proj-1.0.0-SNAPSHOT.jar:na] 
     at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:58) [sample-proj-1.0.0-SNAPSHOT.jar:na] 
Caused by: javax.persistence.PersistenceException: Unable to resolve persistence unit root URL 
     at org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.determineDefaultPersistenceUnitRootUrl(DefaultPersistenceUnitManager.java:603) ~[spring-orm-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.preparePersistenceUnitInfos(DefaultPersistenceUnitManager.java:443) ~[spring-orm-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.afterPropertiesSet(DefaultPersistenceUnitManager.java:424) ~[spring-orm-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:310) ~[spring-orm-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:373) ~[spring-orm-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:362) ~[spring-orm-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) ~[spring-beans-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     ... 24 common frames omitted 
Caused by: java.io.FileNotFoundException: class path resource [] cannot be resolved to URL because it does not exist 
     at org.springframework.core.io.ClassPathResource.getURL(ClassPathResource.java:187) ~[spring-core-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     at org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.determineDefaultPersistenceUnitRootUrl(DefaultPersistenceUnitManager.java:600) ~[spring-orm-4.3.2.RELEASE.jar!/:4.3.2.RELEASE] 
     ... 31 common frames omitted 

Answer 1

ошибка говорит, что возникли проблемы делая EntityManagerFactory но вы явно не создавать на каждом из ваших источников данных. Если вы посмотрите пример Spring Data для нескольких источников данных, вы увидите, как они описывают создание разных источников данных.

https://github.com/spring-projects/spring-data-examples/tree/master/jpa/multiple-datasources