Document and Bson

[ilovemongo]

在3.0版本以後java 提供了Document這個class，請教各位大神Document與Bson的使用時機?

[zhangyaoxing]

Bson是一个interface，Document是一个实现了Bson的class。

[yea]

請參考: https://github.com/mongodb/mongo-java-driver/blob/master/driver/src/examples/tour/QuickTour.java

import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.MongoCollection;
import org.bson.Document;

.....

MongoClient mongoClient = new MongoClient(new MongoClientURI("mongodb://127.0.0.1:27017"));
MongoDatabase database = mongoClient.getDatabase("mydb");
MongoCollection<Document> collection = database.getCollection("test");

Document doc = new Document("name", "MongoDB")
                    .append("type", "database")
                    .append("count", 1);
 
collection.insertOne(doc);