springboot 项目配置多个 mongo 数据源的方法

1、在 yml 文件中指定 mongodb 的数据

mongodb:
    primary:
        host: xxx.xxx.xxx.xxx
        port: 27017
        database: name1
    secondary:
        host: xxx.xxx.xxx.xxx
        port: 27017
        database: name2

2、新建 MultipleMongoConfig 文件

@Configuration
@ConfigurationProperties(prefix = "mongodb")
public class MultipleMongoConfig {

    private MongoProperties primary = new MongoProperties();
 private MongoProperties secondary = new MongoProperties();

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

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

  @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());
  }


  public MongoProperties getPrimary() {
        return primary;
  }

    public void setPrimary(MongoProperties primary) {
        this.primary = primary;
  }

    public MongoProperties getSecondary() {
        return secondary;
  }

    public void setSecondary(MongoProperties secondary) {
        this.secondary = secondary;
  }
}

3、为每一个数据源创建一个 Configuration

@Configuration
@EnableMongoRepositories(basePackages = "repository所在的包名",
  mongoTemplateRef = "TemplateA(上面取的对应的bean名字)")
public class TemplateAMongoConfiguration {
}

@Configuration
@EnableMongoRepositories(basePackages = "repository所在的包名",
  mongoTemplateRef = "TemplateB(上面取的对应的bean名字)")
public class TemplateBMongoConfiguration {
}

4、使用

@Autowired
@Qualifier("TemplateA")
private MongoTemplate mongoTemplate;

over！