我有以下 Kafka 生产者代码。我想知道是否可以发送图像文件而不是 JSON 文件?有没有通过Kafka生产者发送图像文件的代码引用?
try {
URL url = getClass().getResource("test.json");
File file = new File(url.getPath());
Properties props = new Properties();
props.put("bootstrap.servers", "yupsectory.selet.com:9092");
props.put("client.id", CLIENT_ID);
props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
String jsonData = readFile(file.getAbsolutePath());
JSONObject jobj = new JSONObject(jsonData);
System.out.println("jarr: " + jobj.getJSONObject("data").toString());
Producer<String, String> producer = new KafkaProducer <>(props);
//Use this util to pull the context that needs to be propagated from the HttpServletRequest
Map<String, String> headermap = YupsectoryContextUtil.buildContextMap(request);
//Sending a message
ProducerRecord<String, String> record = new ProducerRecord<String, String>(topic, jobj.getJSONObject("data").toString());
producer.send(record, headermap);
producer.close();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
最佳答案
图像可以作为消息值中的字节数组发送。因此您的代码将按给定的方式更改。
props.put("value.serializer", "org.apache.kafka.common.serialization.ByteArraySerializer");
关于java - Kafka生产发送图像,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51885146/