整合多数据源（待完善）

boot-service/src/main/java/com/xwbing/datasource/JpaDataSourceConfig.java

@@ -1,27 +1,73 @@
 package com.xwbing.datasource;
 
+
 import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
+import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
 import org.springframework.boot.context.properties.ConfigurationProperties;
+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.context.annotation.PropertySource;
+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 javax.annotation.Resource;
+import javax.persistence.EntityManager;
 import javax.sql.DataSource;
+import java.util.Map;
 
 /**
  * 项目名称: boot-module-demo
  * 创建时间: 2018/5/31 21:38
  * 作者: xiangwb
- * 说明:
+ * 说明: JpaDataSourceConfig
  */
 @Configuration
 @PropertySource("classpath:druid.properties")
+@EnableJpaRepositories(
+        entityManagerFactoryRef = "jpaEntityManagerFactory",
+        transactionManagerRef = "jpaTransactionManager",
+        basePackages = {"com.xwbing.domain.repository"})
 public class JpaDataSourceConfig {
-    @Bean(name="")
-    @Primary
-    @ConfigurationProperties("db1")
-    public DataSource primaryDataSource() {
+    @Resource
+    private JpaProperties jpaProperties;
+
+    @Bean(name = "jpaDataSource")
+    @ConfigurationProperties("db2")
+    public DataSource dataSource() {
         return DruidDataSourceBuilder.create().build();
     }
+
+    @Bean(name = "jpaEntityManagerFactory")
+    public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder) {
+        return builder
+                .dataSource(dataSource())
+                .properties(getProperties(dataSource()))
+                .packages("com.xwbing.domain.entity")
+                .persistenceUnit("jpaPersistenceUnit")
+                .build();
+    }
+
+    @Bean(name = "japEntityManager")
+    public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
+        return entityManagerFactory(builder).getObject().createEntityManager();
+    }
+
+    @Bean(name = "jpaTransactionManager")
+    public PlatformTransactionManager dataSourceTransactionManager(EntityManagerFactoryBuilder builder) {
+        return new JpaTransactionManager(entityManagerFactory(builder).getObject());
+    }
+
+    /**
+     * 获取jpa配置信息
+     *
+     * @param dataSource
+     * @return
+     */
+    private Map<String, String> getProperties(DataSource dataSource) {
+        return jpaProperties.getHibernateProperties(dataSource);
+    }
 }