MongoDB Java Driver 3.4操作
Document document2 = new Document("name", "lebo") .append("age", 24).append("type", 1)
.append("status", "A")
.append("favorites", new Document("sports", "run").append("food", "photo"));
List<Document> documents = new ArrayList<>();
documents.add(document);
documents.add(document2);
collection.insertMany(documents); // 插入多条数据
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