获取您自己的网站
db.posts.updateOne( 
  { title: "Post Title 5" }, 
  {
    $set: 
      {
        title: "Post Title 5",
        body: "Body of post.",
        category: "Event",
        likes: 5,
        tags: ["news", "events"],
        date: Date()
      }
  }, 
  { upsert: true }
)              
{
  acknowledged: true,
  insertedId: ObjectId("62c358734684a30f296cfe5f"),
  matchedCount: 0,
  modifiedCount: 0,
  upsertedCount: 1
}
Atlas atlas-8iy36m-shard-0 [primary] blog>