kafka集群配置kerberos认证后，可以用命令行发送和消费，但是用java程序认证出现一下错误？

我在用java程序连接了kerberos认证后的kafka集群后，总是出现一下错误，请问大佬这是啥错误？

我在linux本地服务器后，可以用producer和consumer命令行，可以正常消费和发送，利用的krb5.conf和keytabd都可以在机器中认证成功。

Exception in thread "main" org.apache.kafka.common.errors.SaslAuthenticationException: An error: (java.security.PrivilegedActionException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7) - LOOKING_UP_SERVER)]) occurred when evaluating SASL token received from the Kafka Broker. This may be caused by Java's being unable to resolve the Kafka Broker's hostname correctly. You may want to try to adding '-Dsun.net.spi.nameservice.provider.1=dns,sun' to your client's JVMFLAGS environment. Users must configure FQDN of kafka brokers when authenticating using SASL and `socketChannel.socket().getInetAddress().getHostName()` must match the hostname in `principal/hostname@realm` Kafka Client will go to AUTHENTICATION_FAILED state.
Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7) - LOOKING_UP_SERVER)]
    at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:211)
    at org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.lambda$createSaslToken$1(SaslClientAuthenticator.java:520)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:422)
    at org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.createSaslToken(SaslClientAuthenticator.java:520)
    at org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.sendSaslClientToken(SaslClientAuthenticator.java:427)
    at org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.sendInitialToken(SaslClientAuthenticator.java:326)
    at org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.authenticate(SaslClientAuthenticator.java:267)
    at org.apache.kafka.common.network.KafkaChannel.prepare(KafkaChannel.java:176)
    at org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:547)
    at org.apache.kafka.common.network.Selector.poll(Selector.java:485)
    at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:550)
    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:262)
    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:233)
    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:212)
    at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:236)
    at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:469)
    at org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1274)
    at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1238)
    at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1173)
    at com.ieslab.general.test.ConsumerTest.main(ConsumerTest.java:36)
Caused by: GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7) - LOOKING_UP_SERVER)
    at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:770)
    at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:248)
    at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:179)
    at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:192)
    ... 20 more
Caused by: KrbException: Server not found in Kerberos database (7) - LOOKING_UP_SERVER
    at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:73)
    at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:251)
    at sun.security.krb5.KrbTgsReq.sendAndGetCreds(KrbTgsReq.java:262)
    at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:308)
    at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:126)
    at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:458)
    at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:693)
    ... 23 more
Caused by: KrbException: Identifier doesn't match expected value (906)
    at sun.security.krb5.internal.KDCRep.init(KDCRep.java:140)
    at sun.security.krb5.internal.TGSRep.init(TGSRep.java:65)
    at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:60)
    at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:55)
    ... 29 more