Multiple MongoDB connectors

pom.xml配置

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>2.0.4.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
    <version>2.0.4.RELEASE</version>
</dependency>

Application設定

@SpringBootApplication(
    exclude = {MongoAutoConfiguration.class, MongoDataAutoConfiguration.class}
)
public class TestApplication {
    public static void main(String[] args) {
        SpringApplication.run(TestApplication.class, args);
    }
}

最重要的就是要設定 exclude = {MongoAutoConfiguration.class, MongoDataAutoConfiguration.class}

application.properties設定

mongodb.connect1.uri=mongodb://自己的連線設定1
mongodb.connect1.database=自己的database1
 
mongodb.connect2.uri=mongodb://自己的連線設定2
mongodb.connect2.database=自己的database2

Configurer設定

@Configuration
public class TestConfigurer{
    @Bean
    @ConfigurationProperties(prefix = "mongodb.connect1")
    public MongoProperties getConnectionSetting1() {
        return new MongoProperties();
    }
 
    @Bean
    @ConfigurationProperties(prefix = "mongodb.connect2")
    public MongoProperties getConnectionSetting2() {
        return new MongoProperties();
    }
 
    @Bean(name="Template1")
    public MongoTemplate mongoTemplate1(){
        MongoProperties p = getConnectionSetting1();
        
        return genMongoTemplateWithMongoProperties(p);
    }
 
    @Bean(name="Template2")
    public MongoTemplate mongoTemplate2(){
        MongoProperties p = getConnectionSetting2();
 
        return genMongoTemplateWithMongoProperties(p);
    }
 
    private MongoTemplate genMongoTemplateWithMongoProperties(MongoProperties p){
        MongoClientURI uri = new MongoClientURI(p.getUri());
        MongoClient client = new MongoClient(uri);
 
        SimpleMongoDbFactory f = new SimpleMongoDbFactory(client, p.getDatabase());
        return new MongoTemplate(f);
    }
}

Dao使用Template

@Repository
public class TestDao {
    @Autowired
    @Qualifier("Template1")
    private MongoTemplate mongoTemplate1;
 
    @Autowired
    @Qualifier("Template2")
    private MongoTemplate mongoTemplate2;
}