一.配置数据库
spring.datasource.primary.url=jdbc:mysql://localhost:3306/test1?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC&useSSL=true
spring.datasource.primary.username=root
spring.datasource.primary.password=xxxxx
spring.datasource.primary.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.max-active=10
spring.datasource.primary.max-idle=5
spring.datasource.primary.min-idle=0
spring.datasource.secondary.url=jdbc:mysql://localhost:3306/test2?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC&useSSL=true
spring.datasource.secondary.username=root
spring.datasource.secondary.password=xxxxx
spring.datasource.secondary.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.secondary.max-active=10
spring.datasource.secondary.max-idle=5
spring.datasource.secondary.min-idle=0
二.数据源一配置
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
entityManagerFactoryRef="entityManagerFactoryPrimary",
transactionManagerRef="transactionManagerPrimary",
basePackages= { "com.springboot.multi_resources.repository.user" }) //设置Repository所在位置
public class PrimaryConfig {
@Autowired @Qualifier("primaryDataSource")
private DataSource primaryDataSource;
@Primary
@Bean(name = "entityManagerPrimary")
public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
return entityManagerFactoryPrimary(builder).getObject().createEntityManager();
}
@Primary
@Bean(name = "entityManagerFactoryPrimary")
public LocalContainerEntityManagerFactoryBean entityManagerFactoryPrimary (EntityManagerFactoryBuilder builder) {
return builder
.dataSource(primaryDataSource)
.properties(getVendorProperties(primaryDataSource))
.packages("com.springboot.multi_resources.entity.user") //设置实体类所在位置
.persistenceUnit("primaryPersistenceUnit")
.build();
}
@Autowired(required=false)
private JpaProperties jpaProperties;
private Map<String, String> getVendorProperties(DataSource dataSource) {
return jpaProperties.getHibernateProperties(dataSource);
}
@Primary
@Bean(name = "transactionManagerPrimary")
public PlatformTransactionManager transactionManagerPrimary(EntityManagerFactoryBuilder builder) {
return new JpaTransactionManager(entityManagerFactoryPrimary(builder).getObject());
}
}
三.数据源二配置
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
entityManagerFactoryRef="entityManagerFactorySecondary",
transactionManagerRef="transactionManagerSecondary",
basePackages= { "com.springboot.multi_resources.repository.work" }) //设置Repository所在位置
public class SecondaryConfig {
@Autowired
private JpaProperties jpaProperties;
@Autowired @Qualifier("secondaryDataSource")
private DataSource secondaryDataSource;
@Bean(name = "entityManagerSecondary")
public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
return entityManagerFactorySecondary(builder).getObject().createEntityManager();
}
@Bean(name = "entityManagerFactorySecondary")
public LocalContainerEntityManagerFactoryBean entityManagerFactorySecondary (EntityManagerFactoryBuilder builder) {
return builder
.dataSource(secondaryDataSource)
.properties(getVendorProperties(secondaryDataSource))
.packages("com.springboot.multi_resources.entity.work") //设置实体类所在位置
.persistenceUnit("secondaryPersistenceUnit")
.build();
}
private Map<String, String> getVendorProperties(DataSource dataSource) {
return jpaProperties.getHibernateProperties(dataSource);
}
@Bean(name = "transactionManagerSecondary")
PlatformTransactionManager transactionManagerSecondary(EntityManagerFactoryBuilder builder) {
return new JpaTransactionManager(entityManagerFactorySecondary(builder).getObject());
}
}
四.数据源加载配置
@Configuration
public class DataSourcesConfig {
@Bean(name = "primaryDataSource")
@Qualifier("primaryDataSource")
@Primary
@ConfigurationProperties(prefix="spring.datasource.primary")
public DataSource primaryDataSource() {
System.out.println("primary db built");
return DataSourceBuilder.create().build();
}
@Bean(name = "secondaryDataSource")
@Qualifier("secondaryDataSource")
@ConfigurationProperties(prefix="spring.datasource.secondary")
public DataSource secondaryDataSource() {
System.out.println("secondary db built");
return DataSourceBuilder.create().build();
}
}
提示:相比aop数据源切换,这种来的更彻底更稳定