使用Spring Data Mongo配置多个MongoDB存储库 [英] Configure Multiple MongoDB repositories with Spring Data Mongo

问题描述

我有2个Mongodb数据库通过2个MongoTemplate-s连接到Spring Boot应用程序:

I have 2 Mongodb databases connected to a Spring Boot app with 2 MongoTemplate-s:

mongoTemplate (默认bean名称，连接到默认数据库)

mongoTemplate (the default bean name, connects to default db)

mongoAppTemplate (在运行时连接到另一个数据库)

mongoAppTemplate (connects to another database on run-time)

我有很多使用mongoTemplate的MongoRepository-，但我也想创建一些使用mongoAppTemplate的东西.

I have a lot of MongoRepository-s that use mongoTemplate but I also want to create some that would use mongoAppTemplate.

如何配置2个MongoRepository-s以在Java配置中使用不同的MongoTemplate -s?

How can I configure 2 MongoRepository-s to use different MongoTemplate -s with Java configuration ?

我找到了一种使用XML的方法(下面的链接)，但我真的想保留所有基于注释的方法

I found a way to do it with XML (link below), but I really want to keep it all annotation based

Spring-data -mongodb在一个Mongo实例中连接到多个数据库

推荐答案

基本思想是将包含您的存储库的包层次结构分为两个不同的路径:

The base idea is to separate the package hierarchy that contains your repositories into two different paths:

主要数据库存储库接口的
• com.whatever.repositories.main 包
其他数据库存储库接口的
• com.whatever.repositories.secondary 包

• com.whatever.repositories.main package for the main db repository interfaces
• com.whatever.repositories.secondary package for the other db repository interfaces

您的XML配置应如下所示:

Your XML configuration should be something such as:

<mongo:repositories base-package="com.whatever.repositories.main" mongo-template-ref="mongoTemplate"/>
<mongo:repositories base-package="com.whatever.repositories.secondary" mongo-template-ref="mongoAppTemplate"/>

编辑

@ EnableMongoRepositories 注释不是@Repeatable，但是您可以有两个@Configuration类，每个类都用@EnableMongoRepositories注释，以便使用注释实现相同的目的:

@EnableMongoRepositories annotation is not @Repeatable, but you can have two @Configuration classes, each annotated with @EnableMongoRepositories in order to achieve the same using annotations:

@Configuration
@EnableMongoRepositories(basePackages = "com.whatever.repositories.main", mongoTemplateRef = "mongoTemplate")
public class MainMongoConfig {
    ....
}

@Configuration
@EnableMongoRepositories(basePackages = "com.whatever.repositories.secondary", mongoTemplateRef = "mongoAppTemplate")
public class SecondaryMongoConfig {
    ....
}

第三个@Configuration带注释的类，另外两个@Import.

And a third @Configuration annotated class which @Import the other two.

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