云数据库 MongoDB 版

Java 连接示例

Maven配置

<dependencies>    <dependency>        <groupId>org.mongodb</groupId>        <artifactId>mongo-java-driver</artifactId>        <version>3.0.4</version>    </dependency></dependencies>

Java代码:

import java.util.ArrayList;import java.util.List;import java.util.UUID;import org.bson.BsonDocument;import org.bson.BsonString;import org.bson.Document;import com.mongodb.MongoClient;import com.mongodb.MongoClientOptions;import com.mongodb.MongoClientURI;import com.mongodb.MongoCredential;import com.mongodb.ServerAddress;import com.mongodb.client.MongoCollection;import com.mongodb.client.MongoCursor;import com.mongodb.client.MongoDatabase;public class Main {    public static ServerAddress seed1 = new ServerAddress("demotest-1.mongodb.tbc3.newtest.rdstest.aliyun-inc.com", 27017);    public static ServerAddress seed2 = new ServerAddress("demotest-2.mongodb.tbc3.newtest.rdstest.aliyun-inc.com", 27017);    public static String username = "demouser";    public static String password = "123456";    public static String ReplSetName = "mgset-1441984463";    public static String DEFAULT_DB = "admin";    public static String DEMO_DB = "test";    public static String DEMO_COLL = "testColl";    public static MongoClient createMongoDBClient() {        // 构建Seed列表        List<ServerAddress> seedList = new ArrayList<ServerAddress>();        seedList.add(seed1);        seedList.add(seed2);        // 构建鉴权信息        List<MongoCredential> credentials = new ArrayList<MongoCredential>();        credentials.add(MongoCredential.createScramSha1Credential(username,                DEFAULT_DB, password.toCharArray()));        // 构建操作选项，requiredReplicaSetName属性外的选项根据自己的实际需求配置，默认参数满足大多数场景        MongoClientOptions options = MongoClientOptions.builder()                .requiredReplicaSetName(ReplSetName).socketTimeout(2000)                .connectionsPerHost(1).build();        return new MongoClient(seedList, credentials, options);    }    public static MongoClient createMongoDBClientWithURI() {        //另一种通过URI初始化        //mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database][?options]]        MongoClientURI connectionString = new MongoClientURI("mongodb://" + username + ":" + password + "@" +                                                              seed1 + "," + seed2 + "/" +                                                              DEFAULT_DB +                                                              "?replicaSet=" + ReplSetName);        return new MongoClient(connectionString);    }    public static void main(String args[]) {        MongoClient client = createMongoDBClient();        //or        //MongoClient client = createMongoDBClientWithURI();        try {            // 取得Collecton句柄            MongoDatabase database = client.getDatabase(DEMO_DB);            MongoCollection<Document> collection = database.getCollection(DEMO_COLL);            // 插入数据            Document doc = new Document();            String demoname = "JAVA:" + UUID.randomUUID();            doc.append("DEMO", demoname);            doc.append("MESG", "Hello AliCoudDB For MongoDB");            collection.insertOne(doc);            System.out.println("insert document: " + doc);            // 读取数据            BsonDocument filter = new BsonDocument();            filter.append("DEMO", new BsonString(demoname));            MongoCursor<Document> cursor = collection.find(filter).iterator();            while (cursor.hasNext()) {                System.out.println("find document: " + cursor.next());            }               } finally {            //关闭Client，释放资源            client.close();        }        return ;    }}