when I use java driver to connect atlas mongodb db，got a SSLHandshakeException，how to fix it？
final ConnectionString uriString = new ConnectionString ("mongodb+srv://XXX:[email protected]/test?retryWrites=true&w=majority");
MongoClient mongoClient = MongoClients.create(settings);
MongoDatabase database = mongoClient.getDatabase("test");
System.out.println("Connect to database successfully");
MongoCollection<Document> collection = database.getCollection("movie");
String dbs = mongoClient.listDatabaseNames().first();
System.out.println("dbs" + dbs);
2019-10-01 00:03:23 INFO org.mongodb.driver.cluster:76] Exception in monitor thread while connecting to server cluster0-shard-00-02-ddtis.azure.mongodb.net:27017 com.mongodb.MongoSocketWriteException: Exception sending message at com.mongodb.internal.connection.InternalStreamConnection.translateWriteException(InternalStreamConnection.java:551) at com.mongodb.internal.connection.InternalStreamConnection.sendMessage(InternalStreamConnection.java:433) at com.mongodb.internal.connection.InternalStreamConnection.sendCommandMessage(InternalStreamConnection.java:273) at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:257) at com.mongodb.internal.connection.CommandHelper.sendAndReceive(CommandHelper.java:83) at com.mongodb.internal.connection.CommandHelper.executeCommand(CommandHelper.java:33) at com.mongodb.internal.connection.InternalStreamConnectionInitializer.initializeConnectionDescription(InternalStreamConnectionInitializer.java:105) at com.mongodb.internal.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:62) at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:129) at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117) at java.lang.Thread.run(Thread.java:748) Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Alerts.java:192) at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1959) at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:302) at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296) at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1514) at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216) at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1026) at sun.security.ssl.Handshaker.process_record(Handshaker.java:961) at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1072) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1385) at sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:757) at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:123) at com.mongodb.internal.connection.SocketStream.write(SocketStream.java:99) at com.mongodb.internal.connection.InternalStreamConnection.sendMessage(InternalStreamConnection.java:430) ... 9 common frames omitted Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:397) at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:302) at sun.security.validator.Validator.validate(Validator.java:260) at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124) at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1496) ... 18 common frames omitted Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126) at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280) at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392)
... 24 common frames omitted
