Springboot jpa多数据源

1.SpringBootApplication

package com.xx.xxx;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Primary;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
@EnableTransactionManagement
public class Application {

    @Autowired
    private RestTemplateBuilder restTemplateBuilder;

    @Bean
    public RestTemplate restTemplate(){
        return restTemplateBuilder.build();
    }

    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder(){
        return new BCryptPasswordEncoder();
    }

    @Bean
    @Primary
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(){
        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
        factoryBean.setPersistenceUnitName("default");
        return factoryBean;
    }

    @Bean
    @Primary
    PlatformTransactionManager transactionManager(){
        return new JpaTransactionManager(entityManagerFactory().getObject());
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean boJun(){
        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
        factoryBean.setPersistenceUnitName("boJun");
        return factoryBean;
    }

    @Bean
    PlatformTransactionManager transactionManager2(){
        return new JpaTransactionManager(boJun().getObject());
    }
    
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

2.resources/META-INF/persistence.xml

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
             version="1.0">
    <persistence-unit name="default" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <properties>
            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
            <property name="hibernate.connection.url" value="jdbc:mysql://192.168.80.174:3306/xx?characterEncoding=UTF-8"/>
            <property name="hibernate.connection.username" value="root"/>
            <property name="hibernate.connection.password" value="xxx"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
            <property name="hibernate.show_sql" value="true"/>
        </properties>
    </persistence-unit>
    <persistence-unit name="boJun" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <properties>
            <property name="hibernate.connection.driver_class" value="oracle.jdbc.driver.OracleDriver"/>
            <property name="hibernate.connection.url" value="jdbc:oracle:thin:@//192.168.80.128:1521/xxx"/>
            <property name="hibernate.connection.username" value="xx"/>
            <property name="hibernate.connection.password" value="xxx"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
            <property name="hibernate.show_sql" value="true" />
        </properties>
    </persistence-unit>
</persistence>

3.dao

package com.xx.xxx.modules.repertory.dao;

import org.hibernate.SQLQuery;
import org.hibernate.transform.Transformers;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import java.util.List;
import java.util.Map;

/**
 * @author DurantSimpson
 * @desc
 * @create 2018-05-23 17:53
 **/
@Repository
public class ProductDao {

    @PersistenceContext(unitName = "boJun")
    private EntityManager entityManager;

    public List<Map<String,Object>> fuzzyByNo(String productNo){
        String sql = "SELECT name productno FROM M_PRODUCT where NAME like '%'||'"+productNo+"'||'%'";
        return entityManager.createNativeQuery(sql).getResultList();
    }

    public List<Map<String,Object>> getStoreStock(String productNo){
        String sql = "SELECT name productno FROM M_PRODUCT where NAME like '%'||'"+productNo+"'||'%'";
        return entityManager.createNativeQuery(sql).unwrap(SQLQuery.class).setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP).list();
    }
}