[英]Spring boot 2.0.0 multiple databases (data sources)
I want to connect two databases with Spring Boot project.我想用 Spring Boot 项目连接两个数据库。 Everything was fine until I migrated to 2.0.0 version.
一切都很好,直到我迁移到 2.0.0 版本。 I found some configuration settings but it doesn't work for me.
我找到了一些配置设置,但对我不起作用。
I am using Oracle database as remote DB and H2 database as file-based local database.我使用 Oracle 数据库作为远程 DB 和 H2 数据库作为基于文件的本地数据库。
CODE:代码:
REMOTE DATABASE - ORACLE远程数据库 - ORACLE
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(entityManagerFactoryRef = "remotedbEntityManagerFactory", basePackages = {"com.stravovani.DB.RemoteDB.Repository"})
public class RemoteDBConfig {
@Value("${datasource.stravovani.maxPoolSize:10}")
private int maxPoolSize;
@Primary
@Bean(name = "remotedbDataSource")
@ConfigurationProperties(prefix = "remotedb.datasource")
public DataSourceProperties dataSourceProperties(){
return new DataSourceProperties();
}
@Primary
@Bean
public DataSource dataSource() {
DataSourceProperties dataSourceProperties = dataSourceProperties();
HikariDataSource dataSource = (HikariDataSource)
DataSourceBuilder
.create(dataSourceProperties.getClassLoader())
.driverClassName(dataSourceProperties.getDriverClassName())
.url(dataSourceProperties.getUrl())
.username(dataSourceProperties.getUsername())
.password(dataSourceProperties.getPassword())
.type(HikariDataSource.class)
.build();
dataSource.setMaximumPoolSize(maxPoolSize);
return dataSource;
}
@Primary
@Bean(name = "remotedbEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean entityManagerFactory()
throws NamingException {
LocalContainerEntityManagerFactoryBean factoryBean = new
LocalContainerEntityManagerFactoryBean();
factoryBean.setDataSource(dataSource());
factoryBean.setPackagesToScan("com.stravovani.DB.RemoteDB.Model");
factoryBean.setJpaVendorAdapter(jpaVendorAdapter());
return factoryBean;
}
@Primary
@Bean
public JpaVendorAdapter jpaVendorAdapter() {
HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new
HibernateJpaVendorAdapter();
return hibernateJpaVendorAdapter;
}
@Primary
@Bean
@Autowired
public PlatformTransactionManager
transactionManager(@Qualifier("remotedbEntityManagerFactory") EntityManagerFactory emf) {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(emf);
return txManager;
}
}
LOCAL DATABASE - H2本地数据库 - H2
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(entityManagerFactoryRef = "localdbEntityManagerFactory", transactionManagerRef = "localdbTransactionManager", basePackages = {"com.stravovani.DB.LocalDB.Repository"})
public class LocalDBConfig {
@Value("${datasource.stravovani.maxPoolSize:10}")
private int maxPoolSize;
@Bean(name = "localdbDataSource")
@ConfigurationProperties(prefix = "localdb.datasource")
public DataSourceProperties dataSourceProperties(){
return new DataSourceProperties();
}
@Bean
public DataSource dataSource() {
DataSourceProperties dataSourceProperties = dataSourceProperties();
HikariDataSource dataSource = (HikariDataSource)
DataSourceBuilder
.create(dataSourceProperties.getClassLoader())
.driverClassName(dataSourceProperties.getDriverClassName())
.url(dataSourceProperties.getUrl())
.username(dataSourceProperties.getUsername())
.password(dataSourceProperties.getPassword())
.type(HikariDataSource.class)
.build();
dataSource.setMaximumPoolSize(maxPoolSize);
return dataSource;
}
@Bean(name = "localdbEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean entityManagerFactory()
throws NamingException {
LocalContainerEntityManagerFactoryBean factoryBean = new
LocalContainerEntityManagerFactoryBean();
factoryBean.setDataSource(dataSource());
factoryBean.setPackagesToScan("com.stravovani.DB.LocalDB.Model");
factoryBean.setJpaVendorAdapter(jpaVendorAdapter());
return factoryBean;
}
@Bean
public JpaVendorAdapter jpaVendorAdapter() {
HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new
HibernateJpaVendorAdapter();
return hibernateJpaVendorAdapter;
}
@Bean
@Autowired
public PlatformTransactionManager
transactionManager(@Qualifier("localdbEntityManagerFactory") EntityManagerFactory emf) {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(emf);
return txManager;
}
}
APPLICATION PROPERTIES应用属性
spring.data.rest.basePath=/api
spring.cache.type=NONE
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true
spring.h2.console.enabled=true
spring.h2.console.path=/localDB
# Oracle - CIT DB
remotedb.datasource.url= ************************
remotedb.datasource.username=*********
remotedb.datasource.password=****************
remotedb.datasource.driver-class-name=oracle.jdbc.OracleDriver
# H2 - Local DB
localdb.datasource.url=jdbc:h2:file:./localDB
localdb.datasource.username=************
localdb.datasource.password=*********************
localdb.datasource.driverClassName=org.h2.Driver
ERROR:错误:
2018-03-09 21:57:16.707 ERROR 10812 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
java.lang.NullPointerException: null
at com.stravovani.MVC.Controller.CardController.test(CardController.java:19) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[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:564) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:870) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:776) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:870) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:855) ~[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.28.jar:8.5.28]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) [tomcat-embed-core-8.5.28.jar:8.5.28]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.28.jar:8.5.28]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) [na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) [na:na]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.28.jar:8.5.28]
at java.base/java.lang.Thread.run(Thread.java:844) [na:na]
UPDATE更新
CARD CONTROLLER:卡控制器:
@RestController
public class CardController
{
@Autowired
public I_CardService i_CardService;
public CardRepositoryRemote cardRepositoryRemote;
@GetMapping("/test")
public String test(){
return cardRepositoryRemote.findCardByKartaId("0261549783").toString();
}
@PostMapping("/checkcard")
public @ResponseBody String checkCard(@RequestBody CardRemote cardRemote)
{
return i_CardService.checkCard(cardRemote.getKartaId());
}
@PostMapping("/savecardtolocaldb")
public @ResponseBody String saveCardToLocalDB(@RequestBody CardLocal cardLocal){
return i_CardService.saveCardToLocalDB(cardLocal);
}
@GetMapping("/movedata")
public String moveData(){
i_CardService.moveData();
return "Moved";
}
}
REPOSITORY:存储库:
@Repository
public interface CardRepositoryRemote extends JpaRepository<CardRemote, String>
{
CardRemote findCardByKartaId(@Param("kartaId") String kartaId);
}
MODEL WITH LOMBOK:龙目岛模型:
@Data
@Entity
@Table(name = "Record")
public class CardLocal
{
@Id
@Column(name = "ID")
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="LOCAL_SEQ")
@SequenceGenerator(name="LOCAL_SEQ", sequenceName="LOCAL_SEQ", allocationSize=1)
private Long ID;
@Column(name = "CARDID")
private String kartaID;
@Column(name = "DATE", insertable = false)
private String date;
@Column(name = "FOODTYPE")
private String typJidla;
@Column(name = "MOVED", insertable = false)
private boolean moved;
public CardLocal() { }
public CardLocal(String kartaID, String typJidla) {
this.kartaID = kartaID;
this.typJidla = typJidla;
}
}
With spring boot 2.0 there was a shift to Hikari for database transaction management.在 spring boot 2.0 中,数据库事务管理转向了 Hikari。 Hikari requires the datasource url to be defined as spring.datasource.jdbcUrl where it used to be spring.datasource.url .
Hikari 要求将数据源 url 定义为spring.datasource.jdbcUrl ,它曾经是spring.datasource.url 。
If you are using a custom 2nd datasource it will also need to use the jdbcUrl syntax, for example: oracle.datasource.jdbcUrl .如果您使用自定义的第二个数据源,它还需要使用 jdbcUrl 语法,例如: oracle.datasource.jdbcUrl 。 The spring documentation messes this up in their example where they define the jdbc URL as jdbc-url.
spring 文档在他们的示例中混淆了这一点,他们将 jdbc URL 定义为 jdbc-url。
The rest of the spring documentation on how to configure multiple data sources is very useful.关于如何配置多个数据源的 spring 文档的其余部分非常有用。
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