springdatajpa配置多数据源

springboot项目配置多数据源

springboot从2.0开始默认数据库连接池 Hikari，在配置多数据源时想自定义连接池配置可以参考如下…

pom.xml

<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.4.RELEASE</version>
</parent>
<dependencies><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency>
</dependencies>

application.yml

spring:datasource:primary:driver-class-name: com.mysql.cj.jdbc.DriverjdbcUrl: jdbc:mysql://127.0.0.1:3306/first?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=trueusername: rootpassword: 123123connectionTimeout: 60000maximumPoolSize: 5maxLifetime: 0idleTimeout: 0poolName: hikari-01secondary:driver-class-name: com.mysql.cj.jdbc.DriverjdbcUrl: jdbc:mysql://127.0.0.1:3306/second?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=trueusername: rootpassword: 123123connectionTimeout: 60000maximumPoolSize: 5maxLifetime: 0idleTimeout: 0poolName: hikari-02jpa:show-sql: truehibernate:ddl-auto: nonedatabase-platform: org.hibernate.dialect.MySQL8Dialectopen-in-view: true

第一数据源配置

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = {"com.wanfeng.multidatasource.repository.primary"},entityManagerFactoryRef = "entityManagerFactoryPrimary",transactionManagerRef = "transactionManagerPrimary")
@ConfigurationProperties(prefix = "spring.datasource.primary")
public class PrimaryConfig extends HikariConfig {private final JpaProperties jpaProperties;private final HibernateProperties hibernateProperties;public PrimaryConfig(JpaProperties jpaProperties, HibernateProperties hibernateProperties) {this.jpaProperties = jpaProperties;this.hibernateProperties = hibernateProperties;}@Bean(name = "primaryDataSource")@Primarypublic DataSource primaryDataSource() {return new HikariDataSource(this);}@Bean(name = "entityManagerPrimary")public EntityManager entityManager(EntityManagerFactoryBuilder builder) {return Objects.requireNonNull(entityManagerFactoryPrimary(builder).getObject()).createEntityManager();}@Bean@Primarypublic LocalContainerEntityManagerFactoryBean entityManagerFactoryPrimary(EntityManagerFactoryBuilder builder) {return builder.dataSource(primaryDataSource()).properties(hibernateProperties.determineHibernateProperties(jpaProperties.getProperties(),new HibernateSettings()))//设置实体类所在位置.packages("com.wanfeng.multidatasource.entity.primary").persistenceUnit("primaryPersistenceUnit").build();}@Bean(name = "transactionManagerPrimary")PlatformTransactionManager transactionManagerPrimary(EntityManagerFactoryBuilder builder) {return new JpaTransactionManager(Objects.requireNonNull(entityManagerFactoryPrimary(builder).getObject()));}}

第二数据源配置

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "com.wanfeng.multidatasource.repository.secondary",entityManagerFactoryRef = "entityManagerFactorySecondary",transactionManagerRef = "transactionManagerSecondary")
@ConfigurationProperties(prefix = "spring.datasource.secondary")
public class SecondaryConfig extends HikariConfig {private final JpaProperties jpaProperties;private final HibernateProperties hibernateProperties;public SecondaryConfig(JpaProperties jpaProperties, HibernateProperties hibernateProperties) {this.jpaProperties = jpaProperties;this.hibernateProperties = hibernateProperties;}@Bean(name = "secondaryDataSource")public DataSource secondaryDataSource() {return new HikariDataSource(this);}@Bean(name = "entityManagerSecondary")public EntityManager entityManager(EntityManagerFactoryBuilder builder) {return Objects.requireNonNull(entityManagerFactorySecondary(builder).getObject()).createEntityManager();}@Bean(name = "entityManagerFactorySecondary")public LocalContainerEntityManagerFactoryBean entityManagerFactorySecondary(EntityManagerFactoryBuilder builder) {return builder.dataSource(secondaryDataSource()).properties(hibernateProperties.determineHibernateProperties(jpaProperties.getProperties(),new HibernateSettings())).packages("com.wanfeng.multidatasource.entity.secondary").persistenceUnit("secondaryPersistenceUnit").build();}@Bean(name = "transactionManagerSecondary")PlatformTransactionManager transactionManagerSecondary(EntityManagerFactoryBuilder builder) {return new JpaTransactionManager(Objects.requireNonNull(entityManagerFactorySecondary(builder).getObject()));}
}

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