{"id":132905,"date":"2024-03-26T01:18:11","date_gmt":"2024-03-25T16:18:11","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/kafka%e3%81%ae%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e3%82%92%e5%ae%9f%e7%8f%be%e3%81%99%e3%82%8b%e3%81%9f%e3%82%81%e3%81%aejava%e3%81%ae%e5%ae%9f%e8%a3%85\/"},"modified":"2024-03-27T09:59:52","modified_gmt":"2024-03-27T00:59:52","slug":"kafka%e3%81%ae%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e3%82%92%e5%ae%9f%e7%8f%be%e3%81%99%e3%82%8b%e3%81%9f%e3%82%81%e3%81%aejava%e3%81%ae%e5%ae%9f%e8%a3%85","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/kafka%e3%81%ae%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e3%82%92%e5%ae%9f%e7%8f%be%e3%81%99%e3%82%8b%e3%81%9f%e3%82%81%e3%81%aejava%e3%81%ae%e5%ae%9f%e8%a3%85\/","title":{"rendered":"Kafka\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306eJava\u306e\u5b9f\u88c5"},"content":{"rendered":"<p>Java\u3067\u306f\u3001Kafka Consumer API\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067Kafka\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> org.apache.kafka.clients.consumer.ConsumerConfig;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.kafka.clients.consumer.ConsumerRecord;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.kafka.clients.consumer.ConsumerRecords;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.kafka.clients.consumer.KafkaConsumer;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.kafka.common.serialization.StringDeserializer;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.Collections;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.Properties;\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">KafkaFilterExample<\/span> {\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n<span class=\"hljs-type\">Properties<\/span> <span class=\"hljs-variable\">props<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Properties<\/span>();\r\nprops.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, <span class=\"hljs-string\">\"localhost:9092\"<\/span>);\r\nprops.put(ConsumerConfig.GROUP_ID_CONFIG, <span class=\"hljs-string\">\"test-group\"<\/span>);\r\nprops.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());\r\nprops.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());\r\nKafkaConsumer&lt;String, String&gt; consumer = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">KafkaConsumer<\/span>&lt;&gt;(props);\r\nconsumer.subscribe(Collections.singletonList(<span class=\"hljs-string\">\"test-topic\"<\/span>));\r\n<span class=\"hljs-keyword\">while<\/span> (<span class=\"hljs-literal\">true<\/span>) {\r\nConsumerRecords&lt;String, String&gt; records = consumer.poll(<span class=\"hljs-number\">100<\/span>);\r\n<span class=\"hljs-keyword\">for<\/span> (ConsumerRecord&lt;String, String&gt; record : records) {\r\n<span class=\"hljs-comment\">\/\/ \u5728\u8fd9\u91cc\u6839\u636e\u9700\u8981\u5bf9\u6d88\u606f\u8fdb\u884c\u8fc7\u6ee4<\/span>\r\n<span class=\"hljs-keyword\">if<\/span> (record.value().contains(<span class=\"hljs-string\">\"filter\"<\/span>)) {\r\nSystem.out.println(<span class=\"hljs-string\">\"Filtered message: \"<\/span> + record.value());\r\n} <span class=\"hljs-keyword\">else<\/span> {\r\nSystem.out.println(<span class=\"hljs-string\">\"Message: \"<\/span> + record.value());\r\n}\r\n}\r\n}\r\n}\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3001KafkaConsumer\u3092\u4f5c\u6210\u3057\u3066test-topic\u3068\u3044\u3046\u30c8\u30d4\u30c3\u30af\u3092\u8cfc\u8aad\u3057\u307e\u3059\u3002\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3057\u305f\u3089\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5185\u5bb9\u306b\u300cfilter\u300d\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u5358\u7d14\u306b\u5224\u65ad\u3057\u3001\u7d50\u679c\u3092\u51fa\u529b\u3057\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30ed\u30b8\u30c3\u30af\u306b\u5fdc\u3058\u3066\u8abf\u6574\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001Kafka Consumer API\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067Kafka\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002 import org.apache.kafka.clients [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-132905","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kafka\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306eJava\u306e\u5b9f\u88c5 - Blog - Silicon Cloud<\/title>\n<meta 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