如何使用@Query连接spring数据中多个mongodb集合之间的文档？

# 配置第一个MongoDB数据源
spring.data.mongodb.primary.uri=mongodb://localhost:27017/db1
spring.data.mongodb.primary.database=db1

# 配置第二个MongoDB数据源
spring.data.mongodb.secondary.uri=mongodb://localhost:27017/db2
spring.data.mongodb.secondary.database=db2

@Configuration
public class MongoConfig {
    @Bean(name = "primaryMongoTemplate")
    public MongoTemplate primaryMongoTemplate(@Autowired MongoClient mongoClient) {
        return new MongoTemplate(mongoClient, "db1");
    }

    @Bean(name = "secondaryMongoTemplate")
    public MongoTemplate secondaryMongoTemplate(@Autowired MongoClient mongoClient) {
        return new MongoTemplate(mongoClient, "db2");
    }
}

@Document(collection = "collection1")
public class Collection1 {
    // 定义文档字段
}

@Document(collection = "collection2")
public class Collection2 {
    // 定义文档字段
}

public interface Collection1Repository extends MongoRepository<Collection1, String> {
    @Query(value = "{ $lookup: { from: 'collection2', localField: 'field1', foreignField: 'field2', as: 'result' } }")
    List<Collection1> findWithLookup();
}