MongoDB 3.X JAVA基本操作

对Collection的操作

 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;

 import org.bson.Document;

 import com.mongodb.Block;
 import com.mongodb.MongoClient;
 import com.mongodb.MongoClientURI;
 import com.mongodb.MongoCredential;
 import com.mongodb.ServerAddress;
 import com.mongodb.client.FindIterable;
 import com.mongodb.client.MongoCollection;
 import com.mongodb.client.MongoCursor;
 import com.mongodb.client.MongoDatabase;
 import com.mongodb.client.result.DeleteResult;
 import com.mongodb.client.result.UpdateResult;
 import com.mongodb.client.model.BulkWriteOptions;
 import com.mongodb.client.model.DeleteOneModel;
 import com.mongodb.client.model.Filters;
 import com.mongodb.client.model.InsertOneModel;
 import com.mongodb.client.model.Projections;
 import com.mongodb.client.model.ReplaceOneModel;
 import com.mongodb.client.model.Sorts;
 import com.mongodb.client.model.UpdateOneModel;
 import com.mongodb.client.model.WriteModel;

 import static com.mongodb.client.model.Filters.gt; /***/
 import static com.mongodb.client.model.Filters.eq;
 import static com.mongodb.client.model.Filters.and;
 import static com.mongodb.client.model.Filters.lt;

 public class MongoDBJDBC {

     @SuppressWarnings("resource")
     public static void main(String[] args) {
         try {
             /** 直接登录 */
             // To directly connect to a single MongoDB server.
             // (this will not auto-discover the primary even if it's a member of a replica set)
             /*
             MongoClient mongoClient = new MongoClient("192.168.253.10", 27017);
             MongoDatabase mongoDatabase = mongoClient.getDatabase("dsp");
             System.out.println("Connect to database successfully!");
              */

             /** 使用URI连接信息连接 */
             /*
             MongoClientURI connectionString = new MongoClientURI("mongodb://192.168.253.10:27017,192.168.253.20:27018,192.168.253.30:27019");
             MongoClient mongoClient = new MongoClient(connectionString);
              */

             /** Replica Set 认证登录 */
             // to connect to a replica set, with auto-discovery of the primary, supply a seed list of members
             // 数据库URI（两个参数分别为：服务器地址、端口）
             ServerAddress serverAddress = new ServerAddress("192.168.253.10", 27017);
             List<ServerAddress> addressList = new ArrayList<ServerAddress>();
             addressList.add(serverAddress);
             // 认证信息（三个参数分别为：用户名、数据库名称、密码）
             MongoCredential credential = MongoCredential.createScramSha1Credential("dsp", "dsp", "shi".toCharArray());
             List<MongoCredential> credentialList = new ArrayList<MongoCredential>();
             credentialList.add(credential);
             // 根据URI和认证信息获取数据库连接
             MongoClient mongoClient = new MongoClient(addressList, credentialList);

             /** 切换数据库 */
             MongoDatabase mongoDatabase = mongoClient.getDatabase("dsp");
             /** 切换到需要操作的集合 */
             MongoCollection collection = mongoDatabase.getCollection("col");

             /** 插入文档 */
             // 创建文档 org.bson.Document对象，参数为K:V格式
             // 创建文档集合List<Document>
             // 将文档集合插入数据库集合中collection.insertMany(List<Document>)，插入单个文档可以用collection.insertOne(Document)
             /*
             List<Document> docList = new ArrayList<Document>();
             for (int idx = 0; idx < 10; ++idx) {
                 Document doc = new Document("title", "MongoDB" + idx).
                         append("desc", "数据库" + idx).
                         append("likes", 100 + idx * 10).
                         append("by", "dsp" + idx);
                 docList.add(doc);
             }
             collection.insertMany(docList);
             */

             /** 更新文档 */
             /*
             UpdateResult updateResult = collection.updateMany(and(gt("likes", 90), lt("likes", 110)), new Document("$set", new Document("likes", 30)));
             updateResult.getMatchedCount();
             updateResult.getUpsertedId();
             updateResult.getModifiedCount();
             */

             /** 删除文档 */
             /*
             DeleteResult deleteResult = collection.deleteMany(Filters.eq("likes", 30));
             System.out.println("本次删除 " + deleteResult.getDeletedCount() + " 条记录！");
             */

             /** 检索文档 */
             /*
             FindIterable<Document> findIterable = collection.find();
             MongoCursor<Document> mongoCursor = findIterable.iterator();
             try {
                 while (mongoCursor.hasNext()) {
                     System.out.println(mongoCursor.next().toJson());
                 }
             } finally {
                 mongoCursor.close();
             }
             */

             // 查询过滤器
             /*
             Document myDoc = (Document) collection.find(eq("likes", 10)).first();
             System.out.println(myDoc.toJson());
             */

             /** 使用范围查询获取一个较大的子集 */
             Block<Document> printBlock = new Block<Document>() {
                 @Override
                 public void apply(Document doc) {
                     System.out.println(doc.toJson());
                 }
             };
             // 过滤 likes > 10
             // collection.find(gt("likes", 10)).forEach(printBlock);
             // 过滤 10 <= likes <= 100
             // collection.find(and(Filters.gte("likes", 10), Filters.lte("likes", 100))).forEach(printBlock);

             /** 排序 */
             // collection.find(Filters.exists("likes")).sort(Sorts.descending("likes")).limit(2).forEach(printBlock);

             /** Projection */
             // Document myDoc = (Document) collection.find().projection(Projections.excludeId()).first();
             // System.out.println(myDoc.toJson());

             /** ordered bulk writes */
             List<WriteModel<Document>> writes = new ArrayList<WriteModel<Document>>();
             writes.add(new InsertOneModel<Document>(new Document("_id", 13)));
             writes.add(new InsertOneModel<Document>(new Document("_id", 14)));
             writes.add(new InsertOneModel<Document>(new Document("_id", 15)));
             writes.add(new UpdateOneModel<Document>(new Document("_id", 10), new Document("$set", new Document("x", 101010))));
             writes.add(new DeleteOneModel<Document>(new Document("_id", 11)));
             writes.add(new ReplaceOneModel<Document>(new Document("_id", 12), new Document("_id", 12).append("x", 121212)));
             // bulkWrite默认BulkWriteOptions
             // collection.bulkWrite(writes);
             // collection.find().forEach(printBlock);
             //
             // collection.bulkWrite(writes, new BulkWriteOptions().ordered(false));
             // collection.find().forEach(printBlock);

             /** drop集合 */
             // collection.drop();

             /** drop数据库 */
             // mongoDatabase.drop();
         } catch (Exception e) {
             System.err.println(e.getClass().getName() + " : " + e.getMessage());
         } finally {
             // 防止意外，关闭数据库连接
             // mongoClient.close();
         }
     }

 }

参考：

https://github.com/mongodb/mongo-java-driver/blob/3.0.x/driver/src/examples/tour/QuickTour.java

http://mongodb.github.io/mongo-java-driver/3.0/driver/getting-started/quick-tour/

：）