使用條件獲取收集資料

從 testdb 資料庫中的 testcollection 集合中獲取資料，其中 name=dev

import org.bson.Document;
import com.mongodb.BasicDBObject;
import com.mongodb.MongoClient;
import com.mongodb.ServerAddress;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;

MongoClient mongoClient = new MongoClient(new ServerAddress("localhost", 27017));
MongoDatabase db = mongoClient.getDatabase("testdb");
MongoCollection<Document> collection = db.getCollection("testcollection");

BasicDBObject searchQuery = new BasicDBObject();
searchQuery.put("name","dev");

MongoCursor<Document> cursor = collection.find(searchQuery).iterator();  
try {
    while (cursor.hasNext()) {
        System.out.println(cursor.next().toJson());
    }
} finally {
    cursor.close();
}