Spring Boot Mongo 返回在数组中具有指定值的文档

Question

我有这样的数据库：

    [{
  "_id": {
    "$oid": "62bf6a6121d6c6a226d6b418"
  },
  "title": "Cambodia",
  "description": "Cambodia, a country located in Southeast Asia, is bordered by the Lao People's Democratic Republic to the northeast, Thailand to the northwest, Vietnam to the east, and the Gulf of Thailand to the southwest. Cambodia gained its independence in 1953 and is a member of the Association of South-East Asia Nations (ASEAN). Cambodia has a multiparty democracy under a constitutional monarchy, with Phnom Penh as the capital. Cambodia’s official language is Khmer, and the currency is the riel (KHR).",
  "whatToDo": "Start off by exploring the temples of Angkor Wat while you base yourself in the town of Siem Reap. If you’re into adventuring and going at it alone, rent a bike and get your exercise sweating your way through these 12th century ruins. Alternatively, sign up with one of the hostel tours to get a feel for the temples and meet some other wannabe Indiana Jones travellers along the way. From Siem Reap, don’t miss out on Cambodia’s capital Phnom Penh to learn about the country’s difficult history in the 1970s through a visit its jarring museums, S21 and the Killing Fields. There are plenty of great cafes and restaurants in the city that were made for solo travellers just like you! Then get your water fix by heading down to the islands off of Sihanoukville for some serious beach time and partying, or to the riverside haven of Kampot for kayaking and great coffee. ",
  "packageHolidayType": [
    "indepedentTours"
  ]
},
{
  "_id": {
    "$oid": "62bf6d0d21d6c6a226d6b41d"
  },
  "title": "Classical Spain",
  "description": "Experience Andalucía’s magical fusion of Spanish and Moorish cultures as you discover Seville’s vibrant streets and conquistador heritage, Granada’s wondrous Alhambra and the dazzling Mezquita mosque in Córdoba – and much more. Andalucía is simply one of the most beautiful corners of Europe yet for many it remains relatively undiscovered. It’s a land where the excesses of the modern era seem not to have taken root and where travellers are genuinely welcomed. The food is a delight, with the area noted for its seafood and its famous drink, the fortified wine from Jerez we call sherry. Try a glass of fino, a very dry yet refreshing sherry, while nibbling tapas, that great Spanish titbit invention. The people are charming – always ready to help, with a friendly attitude towards their fellow man and a love of life so typical of Mediterranean people. So, for an inspirational blend of timeless countryside, iconic monuments, romantic and vivacious cities, fragrant flowers and orange blossom, wonderful art and superb cuisine, all set in a region that welcomes visitors as honoured guests, welcome to Andalucía.",
  "packageHolidayType": [
    "escortedTours"
  ]
}]

您可以在两个文档中看到我有数组，里面有不同的类型名称：

"packageHolidayType": [
    "escortedTours"
  ]

和

"packageHolidayType": [
    "indepedentTours"
  ]

我想创建 Spring Boot controller ，它将根据该类型返回适当的文档。

例如：

 @GetMapping("/getRandomEscortedType")
public List<PackageHoliday> getRandomEscortedType() {
// here return just element that is escortedType NOT indepedent tours

---

我尝试过这样的事情，但它不起作用。

@Aggregation(pipeline = {"{$sample:{size:1}}"})//return 1 document
@Query(fields = "{ '_id': 0, 'packageHolidayType.$': 1 }")
List<PackageHoliday> findPackageHolidayBy(String packageHolidayType);

所以我需要存储库，服务，最后是 controller