MongoDB Java API：put() 与append()

MongoDB Java API：put() 与 append() 用于向 MongoDB 数据库中的文档中添加或更新字段值。put() 方法用于添加或更新指定字段的值，而 append() 方法用于将值追加到指定字段的数组中。

java
MongoClient mongoClient = new MongoClient();
MongoDatabase database = mongoClient.getDatabase("mydb");
MongoCollection collection = database.getCollection("mycollection");
Document document = new Document("name", "John Doe")
        .append("age", 30)
        .append("email", "johndoe@example.com");
collection.insertOne(document);

java
MongoClient mongoClient = new MongoClient();
MongoDatabase database = mongoClient.getDatabase("mydb");
MongoCollection collection = database.getCollection("mycollection");
Document document = new Document("name", "John Doe")
        .append("hobbies", Arrays.asList("reading", "painting", "photography"))
        .append("skills", Arrays.asList("Java", "Python", "MongoDB"));
collection.insertOne(document);
Document update = new Document("$push", new Document("hobbies", "cooking"));
collection.updateOne(document, update);