package com.ym.zhproservice.config;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import javax.sql.DataSource;
@Configuration
public class DataSourceConfig {
  @Bean(name = "primaryDataSource")
  @Qualifier("primaryDataSource")
  @ConfigurationProperties(prefix = "spring.datasource.primary")
  public DataSource masterDataSource() {
    return DataSourceBuilder.create().build();
  }
  @Bean(name = "secondaryDataSource")
  @Qualifier("secondaryDataSource")
  @Primary
  @ConfigurationProperties(prefix="spring.datasource.secondary")
  public DataSource secondaryDataSource() {
    return DataSourceBuilder.create().build();
  }
}

package com.ym.zhproservice.config; 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement; 
import javax.annotation.Resource;
import javax.persistence.EntityManager;
import javax.sql.DataSource;
import java.util.Properties;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
    entityManagerFactoryRef = "entityManagerFactoryPrimary",
    transactionManagerRef = "transactionManagerPrimary",
    basePackages = {"com.ym.zhproservice.dao.primary"} //設置dao所在位置
)
public class PrimarySourceConfig { 
  @Autowired
  @Qualifier("primaryDataSource")
  private DataSource primaryDataSource; 
  @Primary
  @Bean(name = "entityManagerPrimary")
  public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
    return entityManagerFactoryPrimary(builder).getObject().createEntityManager();
  } 
  @Resource
  private Properties jpaProperties; 
  @Primary
  @Bean(name = "entityManagerFactoryPrimary")
  public LocalContainerEntityManagerFactoryBean entityManagerFactoryPrimary(EntityManagerFactoryBuilder builder) {
    LocalContainerEntityManagerFactoryBean entityManagerFactory = builder
        .dataSource(primaryDataSource)
        .packages("com.ym.zhproservice.bean.primary") //設置實體類所在位置
        .persistenceUnit("primaryPersistenceUnit")
        .build();
    entityManagerFactory.setJpaProperties(jpaProperties);
    return entityManagerFactory;
  } 
  @Primary
  @Bean(name = "transactionManagerPrimary")
  public PlatformTransactionManager transactionManagerPrimary(EntityManagerFactoryBuilder builder) {
    return new JpaTransactionManager(entityManagerFactoryPrimary(builder).getObject());
  }
}

package com.ym.zhproservice.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import javax.annotation.Resource;
import javax.persistence.EntityManager;
import javax.sql.DataSource;
import java.util.Properties;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
    entityManagerFactoryRef="entityManagerFactorySecondary",
    transactionManagerRef="transactionManagerSecondary",
    basePackages= { "com.ym.zhproservice.dao.secondary" }) //設置dao所在位置
public class SecondarySourceConfig {
  @Autowired
  @Qualifier("secondaryDataSource")
  private DataSource secondaryDataSource;
  @Bean(name = "entityManagerSecondary")
  public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
    return entityManagerFactorySecondary(builder).getObject().createEntityManager();
  }
  @Resource
  private Properties jpaProperties;
  @Bean(name = "entityManagerFactorySecondary")
  public LocalContainerEntityManagerFactoryBean entityManagerFactorySecondary (EntityManagerFactoryBuilder builder) {
    LocalContainerEntityManagerFactoryBean entityManagerFactory = builder
        .dataSource(secondaryDataSource)
        .packages("com.ym.zhproservice.bean.secondary") //設置實體類所在位置
        .persistenceUnit("secondaryPersistenceUnit")
        .build();
    entityManagerFactory.setJpaProperties(jpaProperties);
    return entityManagerFactory;
  }
  @Bean(name = "transactionManagerSecondary")
  PlatformTransactionManager transactionManagerSecondary(EntityManagerFactoryBuilder builder) {
    return new JpaTransactionManager(entityManagerFactorySecondary(builder).getObject());
  }
}