spring boot springjpa 支持多个数据源的实例代码

1.SpringBoot的程序启动类

导入org.springframework.boot.springapplication;导入org.springframework.boot.autoconfigure.enableautoconfiguration;导入org.springframework.boot.builder.springapplicationbuilder;导入org.springframework.boot.context.web.springbootservletinitializer;导入org.springframework.context.annotation.componentscan; @componentscan @enableAutoConfiguration // @eNableJparePositories（basepackages =“ com.sonychina.backend.repository”）公共类应用程序扩展了SpringBootServletIlItialializer {public static void main（string string [] args [] args [] args agrs = springapplication app = new springapplication.claps.class.class.class.class.class.class.class.class.class.class）; app.run（args）; //springapplication.run(application.class，args）; } @Override Protected SpringApplicationBuilder configure（SpringApplicationBuilder应用程序）{return Application.sources（application.class）; }}}

2.双数据源配置类

导入java.util.map;导入javax.sql.datasource;导入org.springframework.beans.factory.annotation.autowired;导入org.springframework.boot.autoconfigure.jdbc.datasourcebuilder;导入org.springframework.boot.autoconfigure.orm.jpa.entitymanagerfactorybuilder;导入org.springframework.boot.autoconfigure.orm.jpa.jpaproperties;导入org.springframework.boot.context.properties.configurationproperties;导入org.springframework.context.annotation.bean;导入org.springframework.context.annotation.configuration;导入org.springframework.context.annotation.primary;导入org.springframework.data.jpa.repository.config.enablejparepositories;导入org.springframework.orm.jpa.localcontainerentitymanagerfactorybean;导入com.test.entity.statistic.sysuser;导入com.test.repository.system.SystemRepository; @Configuration @enablejparepositories（EntityManagerFactoryReref =“ EntityManagerFactoryPrimary”，basepackageclasses = {SystemRepository.Class}）公共类Global global globaldataConfiguration {// @autowied私人jpaproperties jpaproperties; @Bean(name="primaryDataSource") @Primary @ConfigurationProperties(prefix="datasource.primary") public DataSource primaryDataSource() { System.out.println("-------------------- primaryDataSource init ---------------------");返回datasourcebuilder.create（）。build（）; } @Bean(name="secondaryDataSource") @ConfigurationProperties(prefix="datasource.secondary") public DataSource secondaryDataSource() { System.out.println("-------------------- secondaryDataSource init ---------------------"); // datasourcebuilder factory = datasourcebuilder // .create（dbconfig.class.getClassLoader（））// .driverClassName（dbconfig.getDriver（） .password（dbconfig.getPassword（））; // return Factory.build（）;返回datasourcebuilder.create（）。build（）; } // @bean（name =“ entityManagerPrimary”）// @primary // public entityManager entityManager（EntityManagerFactoryBuilder Builder）{// return customerentityManagerFactory（buililder）.getObjectory（builder）.getObject（）createNtityManager（）。 //} @bean（name =“ entityManagerFactoryPrimary”）@primary localContainErentityManagerFactoryBean cultiserentityManagerFactory（EntityManagerFactoryBuilder Builder） .packages（sysuser.class）.persistenceUnit（“ system”）.build（）; }私有地图<字符串，字符串> getVendorProperties（dataSource dataSource）{返回jpaproperties.gethibernateproperties（dataSource）; }}}

3.第二个jpa实体管理器

导入java.util.map;导入javax.sql.datasource;导入org.springframework.beans.factory.annotation.autowired;导入org.springframework.beans.factory.annotation.qualifier;导入org.springframework.boot.autoconfigure.orm.jpa.entitymanagerfactorybuilder;导入org.springframework.boot.autoconfigure.orm.jpa.jpaproperties;导入org.springframework.context.annotation.bean;导入org.springframework.context.annotation.configuration;导入org.springframework.data.jpa.repository.config.enablejparepositories;导入org.springframework.orm.jpa.jpatransactionmanager;导入org.springframework.orm.jpa.localcontainerentitymanagerfactorybean;导入org.springframework.transaction.platformtransactionManager;导入org.springframework.transaction.annotation.enabletransactionManagement;导入com.test.entity.manage.banner;导入com.test.repository.manage.bannerrepository; @enabletransactionManagement @enablejparepositories（EntityManagerFactoryRef =“ EntityManagerFactorySecondary”，TrassActionManagerRef =“ TrassActionManagerSecondary”，basepackageclasses = {BannerRepoSitory.Class prublic clupprie clupperrig secontraf， jpaproperties; @autowired@feolifier（“ SecontaryDataSource”）私人数据源数据; // @bean（name =“ entityManagerPrimary”）// @primary // public entityManager entityManager（EntityManagerFactoryBuilder Builder）{//返回cultuertentityManagerFactory（buililder）.getObject（buil builder）.getObject（buitObject）.getObject（）。 //} @bean（name =“ EntityManagerFactorySecondary”）公共LocalContainerentityManagerFactoryBean customerentityManagerFactory（EntityManagerFactoryBuilder Builder）{ .persistenceUnit（“客户”）.build（）; }私有地图<字符串，字符串> getVendorProperties（dataSource dataSource）{返回jpaproperties.gethibernateproperties（dataSource）; } @bean（name =“ TransActionManagerSecondary”）PlatformTransActionManager TrassActionManagerSecondary（EntityManagerFactoryBuilder builder）{返回新的JpatransactionManager（CultuerentityManagerFactory（Builder（builder）.getObject）.getObject）.getObject）; }}}

4.重新定位类举例

导入org.springframework.data.jpa.repository.jparepository;导入org.springframework.data.jpa.repository.modifying;导入org.springframework.data.jpa.repository.query;导入com.test.entity.manage.banner;公共接口bannerrepository扩展了jparepository <banner，long> {@modifying @query（“ update banner m set m.name =？1 where m.id =？2”）public void dustafe（字符串bannername，long ID）; }

1.5。注意：@@primary localcontainerentityManagerFactoryBean可以不用指定TransActionManager，Spring上下文自动使用默认的jpatransactionManager，但是对于第二个或第三个等等必须指定TransActionManager。可以参考springboot官方文档中的相关章节。

总结

spring boot springjpa支持多个数据源的实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对武林网网站的支持！，小编会及时回复大家的。在此也非常感谢大家对武林网网站的支持！