springboot整合kafka 鉴权

在Spring Boot中整合Kafka的鉴权可以通过配置Kafka的安全协议来实现。具体步骤如下：

1. 在Kafka服务器端配置安全协议，包括SSL和SASL认证等。
2. 在Spring Boot应用程序中配置Kafka的安全协议，包括SSL和SASL认证等。
3. 在Spring Boot应用程序中使用KafkaTemplate或者KafkaConsumer来发送或接收消息。

下面是一个简单的示例代码：

@Configuration
@EnableKafka
public class KafkaConfig {

    @Value("${spring.kafka.bootstrap-servers}")
    private String bootstrapServers;

    @Value("${spring.kafka.security.protocol}")
    private String securityProtocol;

    @Value("${spring.kafka.ssl.trust-store-location}")
    private String trustStoreLocation;

    @Value("${spring.kafka.ssl.trust-store-password}")
    private String trustStorePassword;

    @Value("${spring.kafka.ssl.key-store-location}")
    private String keyStoreLocation;

    @Value("${spring.kafka.ssl.key-store-password}")
    private String keyStorePassword;

    @Value("${spring.kafka.ssl.key-password}")
    private String keyPassword;

    @Value("${spring.kafka.ssl.endpoint-identification-algorithm}")
    private String endpointIdentificationAlgorithm;

    @Value("${spring.kafka.sasl.mechanism}")
    private String saslMechanism;

    @Value("${spring.kafka.sasl.jaas.config}")
    private String saslJaasConfig;

    @Bean
    public KafkaTemplate<String, String> kafkaTemplate() {
        return new KafkaTemplate<>(producerFactory());
    }

    @Bean
    public ProducerFactory<String, String> producerFactory() {
        return new DefaultKafkaProducerFactory<>(producerConfigs());
    }

    @Bean
    public Map<String, Object> producerConfigs() {
        Map<String, Object> props = new HashMap<>();        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG, securityProtocol);
        props.put(SslConfigs.SSL_TRUSTSTORE_LOCATION_CONFIG, trustStoreLocation);
        props.put(SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG, trustStorePassword);
        props.put(SslConfigs.SSL_KEYSTORE_LOCATION_CONFIG, keyStoreLocation);
        props.put(SslConfigs.SSL_KEYSTORE_PASSWORD_CONFIG, keyStorePassword);
        props.put(SslConfigs.SSL_KEY_PASSWORD_CONFIG, keyPassword);
        props.put(SslConfigs.SSL_ENDPOINT_IDENTIFICATION_ALGORITHM_CONFIG, endpointIdentificationAlgorithm);
        props.put(SaslConfigs.SASL_MECHANISM, saslMechanism);
        props.put(SaslConfigs.SASL_JAAS_CONFIG, saslJaasConfig);
        return props;
    }

    @Bean
    public ConsumerFactory<String, String> consumerFactory() {
        return new DefaultKafkaConsumerFactory<>(consumerConfigs());
    }

    @Bean
    public Map<String, Object> consumerConfigs() {
        Map<String, Object> props = new HashMap<>();
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG, securityProtocol);
        props.put(SslConfigs.SSL_TRUSTSTORE_LOCATION_CONFIG, trustStoreLocation);
        props.put(SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG, trustStorePassword);
        props.put(SslConfigs.SSL_KEYSTORE_LOCATION_CONFIG, keyStoreLocation);
        props.put(SslConfigs.SSL_KEYSTORE_PASSWORD_CONFIG, keyStorePassword);
        props.put(SslConfigs.SSL_KEY_PASSWORD_CONFIG, keyPassword);
        props.put(SslConfigs.SSL_ENDPOINT_IDENTIFICATION_ALGORITHM_CONFIG, endpointIdentificationAlgorithm);
        props.put(SaslConfigs.SASL_MECHANISM, saslMechanism);
        props.put(SaslConfigs.SASL_JAAS_CONFIG, saslJaasConfig);
        return props;
    }

    @Bean
    public ConcurrentKafkaListenerContainerFactory<String, String> kafkaListenerContainerFactory() {
        ConcurrentKafkaListenerContainerFactory<String, String> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(consumerFactory());
        return factory;
    }
}