如何在Spring Boot应用程序中使用多个mongodb数据库？ [英] How to use multiple mongodb databases in spring boot application?

问题描述

在我的应用程序中，我需要使用两个MongoDB数据库。我不知道如何在spring应用程序的application.properties文件中添加2个MongoDB数据库。

In my application, I need to use two MongoDB databases. I don't know how to add 2 MongoDB databases in the application.properties file in the spring application.

这是我项目的application.properties文件，

Here is the application.properties file of my project,

spring.data.mongodb.database=DB1
spring.data.mongodb.authentication-database=DB1
spring.data.mongodb.host=dev-ng-mongo1.domain.com
spring.data.mongodb.password=9876512
spring.data.mongodb.port=27017 
spring.data.mongodb.username=pavan

但我想为同一项目使用另一个MongoDB数据库。如何在application.properties文件中添加新数据库。

but I want to use another MongoDB database for the same project. How can I add the new database in the application.properties file.

推荐答案

请按照以下步骤设置多个mongodb数据源。

Please follow below steps to setup multiple mongodb data sources.

1. 在application.properties中定义您的主要和辅助mongodb属性，如下所示，请用它们替换您的数据库详细信息：

1. Define your primary and secondary mongodb properties like below in application.properties, please replace with them your db details:

######Primary Mongo DB########################
spring.data.mongodb.host=localhost
spring.data.mongodb.database=primary
spring.data.mongodb.port=27017
spring.data.mongodb.password=*******
spring.data.mongodb.username=*******

###########Secondary MongoDB#####################
mongodb.host=localhost
mongodb.port=27017
mongodb.database=secondary
mongodb.username=******
mongodb.password=******

现在添加多个Mongo Db配置。

Now add Multiple Mongo Db Configuration..

@Configuration
public class MultipleMongoConfig {

@Primary
@Bean(name = "primary")
@ConfigurationProperties(prefix = "spring.data.mongodb")
public MongoProperties getPrimary() {
    return new MongoProperties();
}

@Bean(name = "secondary")
@ConfigurationProperties(prefix = "mongodb")
public MongoProperties getSecondary() {
    return new MongoProperties();
}

@Primary
@Bean(name = "primaryMongoTemplate")
public MongoTemplate primaryMongoTemplate() throws Exception {
    return new MongoTemplate(primaryFactory(getPrimary()));
}

@Bean(name = "secondaryMongoTemplate")
public MongoTemplate secondaryMongoTemplate() throws Exception {
    return new MongoTemplate(secondaryFactory(getSecondary()));
}

@Bean
@Primary
public MongoDbFactory primaryFactory(final MongoProperties mongo) throws Exception {
    return new SimpleMongoDbFactory(new MongoClient(mongo.getHost(), mongo.getPort()),
            mongo.getDatabase());
}

@Bean
public MongoDbFactory secondaryFactory(final MongoProperties mongo) throws Exception {
    return new SimpleMongoDbFactory(new MongoClient(mongo.getHost(), mongo.getPort()),
            mongo.getDatabase());
}

}

现在为您的主数据库启用 EnableMongoRepositories 。请确保您更改 basePackages = com.example.springbootmultipledatasource.primary.repository 您的存储库软件包

Now enable EnableMongoRepositories for your primary an secondary.please make sure you change basePackages = "com.example.springbootmultipledatasource.primary.repository" your repository package here

@Configuration
@EnableMongoRepositories(basePackages = 
"com.example.springbootmultipledatasource.primary.repository",
    mongoTemplateRef = "primaryMongoTemplate")
 public class PrimaryMongoConfig {

 }

二级Mongo模板：请确保在此处更改二级存储库软件包 basePackages = com.example.springbootmultipledatasource.secondary.repository

Secondary Mongo Template:Please make sure you change your secondary repository package here basePackages = "com.example.springbootmultipledatasource.secondary.repository

    @Configuration
    @EnableMongoRepositories(basePackages = "com.example.springbootmultipledatasource.secondary.repository",
        mongoTemplateRef = "secondaryMongoTemplate")
   public class SecondaryMongoConfig {
   }

现在您可以创建文档了，存储库，服务，控制器，您很高兴。下面是您可以创建或具有其他功能的我的项目结构。

Now you can create your document, repository, service, controller and you are good to go.below is my project structure you can create or have different.

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