kafka不支持android客户端

我测试kafka的时候, 使用 eclipse 在win 7 上或者 linux 上可以正常编译运行, 在 android studo上也可以正常编译, 运行的时候出现 FC.

代码如下:

public class Producer extends Thread {
    private final KafkaProducer<Integer, String> producer;
    private final String topic;
    private final Boolean isAsync;

    public Producer(String topic, Boolean isAsync) {
        Properties props = new Properties();
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, KafkaProperties.KAFKA_SERVER_URL + ":" + KafkaProperties.KAFKA_SERVER_PORT);
        props.put(ProducerConfig.CLIENT_ID_CONFIG, "DemoProducer");
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, IntegerSerializer.class.getName());
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        producer = new KafkaProducer<>(props);
        this.topic = topic;
        this.isAsync = isAsync;
    }

    public void run() {
        int messageNo = 1;
        while (true) {
            String messageStr = "Message_" + messageNo;
            long startTime = System.currentTimeMillis();
            if (isAsync) { // Send asynchronously
                producer.send(new ProducerRecord<>(topic,
                    messageNo,
                    messageStr), new DemoCallBack(startTime, messageNo, messageStr));
            } else { // Send synchronously
                try {
                    producer.send(new ProducerRecord<>(topic,
                        messageNo,
                        messageStr)).get();
                    System.out.println("Sent message: (" + messageNo + ", " + messageStr + ")");
                } catch (InterruptedException | ExecutionException e) {
                    e.printStackTrace();
                }
            }
            ++messageNo;
        }
    }
}

class DemoCallBack implements Callback {

    private final long startTime;
    private final int key;
    private final String message;

    public DemoCallBack(long startTime, int key, String message) {
        this.startTime = startTime;
        this.key = key;
        this.message = message;
    }

    /**
     * A callback method the user can implement to provide asynchronous handling of request completion. This method will
     * be called when the record sent to the server has been acknowledged. Exactly one of the arguments will be
     * non-null.
     *
     * @param metadata  The metadata for the record that was sent (i.e. the partition and offset). Null if an error
     *                  occurred.
     * @param exception The exception thrown during processing of this record. Null if no error occurred.
     */
    public void onCompletion(RecordMetadata metadata, Exception exception) {
        long elapsedTime = System.currentTimeMillis() - startTime;
        if (metadata != null) {
            System.out.println(
                "message(" + key + ", " + message + ") sent to partition(" + metadata.partition() +
                    "), " +
                    "offset(" + metadata.offset() + ") in " + elapsedTime + " ms");
        } else {
            exception.printStackTrace();
        }
    }
}




java.lang.NoClassDefFoundError: Failed resolution of: Ljava/lang/management/ManagementFactory;
        at org.apache.kafka.common.utils.AppInfoParser.unregisterAppInfo(AppInfoParser.java:71)
        at org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:1180)
        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:429)
        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:301)
        at com.exe.kafkademo.Producer.<init>(Producer.java:41)
        at com.exe.kafkademo.MainActivity.onCreate(MainActivity.java:13)

Caused by: java.lang.ClassNotFoundException: **Didn't find class "java.lang.management.ManagementFactory" on path: DexPathList**

  [[zip file "/data/app/com.exe.kafkademo-6sa65kcj31aVWV2MfeY-Ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.exe.kafkademo-6sa65kcj31aVWV2MfeY-Ag==/lib/arm64, /system/lib64, /system/vendor/lib64]]

网上搜索发现 java/lang/management/ManagementFactoryrt.jar,把这个jar 加入到libs中, 提示缺少libmanagement.so

多番尝试,无法解决问题

1.网上搜索 发现

https://stackoverflow.com/questions/19595814/android-add-java-lang-management-api
That API is not a part of Android, and is not compatible with Android. 
The java.lang.management API is for managing and monitoring the Java VM. Android's Dalvik VM is not a Java VM.

看这个意思是 kafka目前不兼容android, 请问 android 客户端和 java客户端应该是类似的角色, android 有办法使用 kafka吗? 或者说 android 适合使用kafka 吗?

多谢了






发表于: 13天前   最后更新时间: 12天前   游览量:31
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  • 嗯,另外kafka是长连接,不适用。走个api吧。
    https://github.com/confluentinc/kafka-rest