<p>本文主要介绍Java连接示例。</p> <p>&nbsp; &nbsp;&nbsp;<img src="https://obs-cn-shanghai.ocftcloud.com/pacloud/20202805142819-1c336f7e9e0b.png" style="height:26px; margin:0px; width:65px" />：</p> <p>&nbsp; &nbsp;&nbsp;&bull;&nbsp; &nbsp;官方资料可参考<a href="http://mongodb.github.io/mongo-java-driver/3.0/driver/getting-started/" target="_blank">Quick Start</a>。</p> <p>&nbsp; &nbsp;&nbsp;&bull;&nbsp; &nbsp;Jar包可单击<a href="https://repo1.maven.org/maven2/org/mongodb/mongo-java-driver/3.0.4/" target="_blank">下载</a>。</p> <p><span style="font-size:18px"><strong>操作步骤</strong></span></p> <p>1.&nbsp; 获取 DDS 实例的连接信息。</p> <p>2.&nbsp; Java连接实例：Maven配置。</p> <table border="0" cellpadding="0" cellspacing="0"> <tbody> <tr> <td style="background-color:#f7f8fa"> <p><span style="font-family:Consolas">&lt;dependencies&gt;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; &lt;dependency&gt;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;groupId&gt;org.mongodb&lt;/groupId&gt;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;artifactId&gt;mongo-java-driver&lt;/artifactId&gt;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;version&gt;3.0.4&lt;/version&gt;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; &lt;/dependency&gt;</span></p> <p><span style="font-family:Consolas">&lt;/dependencies&gt;</span></p> <p><span style="font-family:Consolas">Java Code。</span></p> <p><span style="font-family:Consolas"><strong>import</strong> java.util.ArrayList;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> java.util.List;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> java.util.UUID;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> org.bson.BsonDocument;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> org.bson.BsonString;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> org.bson.Document;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> com.mongodb.MongoClient;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> com.mongodb.MongoClientOptions;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> com.mongodb.MongoClientURI;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> com.mongodb.MongoCredential;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> com.mongodb.ServerAddress;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> com.mongodb.client.MongoCollection;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> com.mongodb.client.MongoCursor;</span></p> <p><span style="font-family:Consolas"><strong>import</strong> com.mongodb.client.MongoDatabase;</span></p> <p><span style="font-family:Consolas">&nbsp;<strong>public</strong> <strong>class</strong> <strong>Main</strong> {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> ServerAddress seed1 = <strong>new</strong> ServerAddress(&quot;demotest.mongodb.db.cloud.papub&quot;,</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 15923);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> String username = &quot;demouser&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> String password = &quot;123456&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> String ReplSetName = &quot;demotest&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> String DEFAULT_DB = &quot;test&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> String DEMO_DB = &quot;test&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> String DEMO_COLL = &quot;testColl&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> MongoClient <strong>createMongoDBClient</strong>() {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // 构建Seed列表</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; List&lt;ServerAddress&gt; seedList = <strong>new</strong> ArrayList&lt;ServerAddress&gt;();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;seedList.add(seed1);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // 构建鉴权信息</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; List&lt;MongoCredential&gt; credentials = <strong>new</strong> ArrayList&lt;MongoCredential&gt;();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; credentials.add(MongoCredential.createScramSha1Credential(username, DEFAULT_DB,</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;password.toCharArray()));</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // 构建操作选项，requiredReplicaSetName属性外的选项根据实际需求配置，默认参数满足大多数场景</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoClientOptions options = MongoClientOptions.builder().requiredReplicaSetName(ReplSetName)</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .socketTimeout(2000).connectionsPerHost(1).build();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>return</strong> <strong>new</strong> MongoClient(seedList, credentials, options);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> MongoClient <strong>createMongoDBClientWithURI</strong>() {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // 另一种通过URI初始化</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database][?options]]</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoClientURI connectionString = <strong>new</strong> MongoClientURI(&quot;mongodb://&quot; + username + &quot;:&quot; + password + &quot;@&quot;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;+ seed1 +&nbsp; &quot;/&quot; + DEFAULT_DB + &quot;?replicaSet=&quot; + ReplSetName);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>return</strong> <strong>new</strong> MongoClient(connectionString);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>public</strong> <strong>static</strong> <strong>void</strong> <strong>main</strong>(String args[]) {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoClient client = createMongoDBClient();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // or</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // MongoClient client = createMongoDBClientWithURI();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>try</strong> {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // 取得Collecton句柄</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoDatabase database = client.getDatabase(DEMO_DB);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoCollection&lt;Document&gt; collection = database.getCollection(DEMO_COLL);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // 插入数据</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Document doc = <strong>new</strong> Document();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; String demoname = &quot;JAVA:&quot; + UUID.randomUUID();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; doc.append(&quot;DEMO&quot;, demoname);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; doc.append(&quot;MESG&quot;, &quot;Hello AliCoudDB For MongoDB&quot;);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; collection.insertOne(doc);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println(&quot;insert document: &quot; + doc);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// 读取数据</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; BsonDocument filter = <strong>new</strong> BsonDocument();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; filter.append(&quot;DEMO&quot;, <strong>new</strong> BsonString(demoname));</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoCursor&lt;Document&gt; cursor = collection.find(filter).iterator();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>while</strong> (cursor.hasNext()) {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println(&quot;find document: &quot; + cursor.next());</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; } <strong>finally</strong> {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // 关闭Client，释放资源</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;client.close();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>return</strong>;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">}</span></p> <p>&nbsp;</p> </td> </tr> </tbody> </table>