{"id":100226,"date":"2024-03-22T02:11:20","date_gmt":"2024-03-21T17:11:20","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7kafka%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e5%87%a6%e7%90%86%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/"},"modified":"2024-03-27T08:18:09","modified_gmt":"2024-03-26T23:18:09","slug":"java%e3%81%a7kafka%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e5%87%a6%e7%90%86%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7kafka%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e5%87%a6%e7%90%86%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/","title":{"rendered":"Java\u3067Kafka\u30d5\u30a3\u30eb\u30bf\u51e6\u7406\u3092\u884c\u3046\u65b9\u6cd5\u306f\uff1f"},"content":{"rendered":"<p>Java\u3067\u306fKafka\u306eConsumer API\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Consumer API\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30ad\u30fc\u5024\u3001\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u306a\u3069\u306e\u5c5e\u6027\u306b\u57fa\u3065\u3044\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u305f\u3081\u306e\u67d4\u8edf\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u65b9\u6cd5\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\uff1a<\/p>\n<ol>\n<li>\u30ad\u30fc\u5024\u30d5\u30a3\u30eb\u30bf\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u30ec\u30b3\u30fc\u30c9\u306e\u30ad\u30fc\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u30d5\u30a3\u30eb\u30bf\u3067\u304d\u307e\u3059\u3002\u6307\u5b9a\u306e\u30c8\u30d4\u30c3\u30af\u3092\u8cfc\u8aad\u3059\u308b\u306b\u306f\u3001\u30b3\u30f3\u30b7\u30e5\u30fc\u30deAPI\u306esubscribe()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3001\u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u306e\u30ad\u30fc\u5024\u30d5\u30a3\u30eb\u30bf\u30fc\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u306b\u306f\u3001ConsumerRebalanceListener\u306eonPartitionsAssigned()\u30e1\u30bd\u30c3\u30c9\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><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(<span class=\"hljs-string\">\"bootstrap.servers\"<\/span>, <span class=\"hljs-string\">\"localhost:9092\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"group.id\"<\/span>, <span class=\"hljs-string\">\"test-group\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"key.deserializer\"<\/span>, <span class=\"hljs-string\">\"org.apache.kafka.common.serialization.StringDeserializer\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"value.deserializer\"<\/span>, <span class=\"hljs-string\">\"org.apache.kafka.common.serialization.StringDeserializer\"<\/span>);\r\n\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(Arrays.asList(<span class=\"hljs-string\">\"topic1\"<\/span>), <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ConsumerRebalanceListener<\/span>() {\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onPartitionsAssigned<\/span><span class=\"hljs-params\">(Collection&lt;TopicPartition&gt; partitions)<\/span> {\r\n        <span class=\"hljs-keyword\">for<\/span> (TopicPartition partition : partitions) {\r\n            <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u952e\u503c\u8fc7\u6ee4\u6761\u4ef6<\/span>\r\n            consumer.seek(partition, <span class=\"hljs-number\">0<\/span>);\r\n        }\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onPartitionsRevoked<\/span><span class=\"hljs-params\">(Collection&lt;TopicPartition&gt; partitions)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u64a4\u9500\u952e\u503c\u8fc7\u6ee4\u6761\u4ef6<\/span>\r\n    }\r\n});\r\n<\/code><\/pre>\n<ol>\n<li>\u533a\u5272\u308a\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\uff1aConsumerRebalanceListener \u306e onPartitionsAssigned() \u30e1\u30bd\u30c3\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u6d88\u8cbb\u8005\u306e\u533a\u5272\u308a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u6761\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><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(<span class=\"hljs-string\">\"bootstrap.servers\"<\/span>, <span class=\"hljs-string\">\"localhost:9092\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"group.id\"<\/span>, <span class=\"hljs-string\">\"test-group\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"key.deserializer\"<\/span>, <span class=\"hljs-string\">\"org.apache.kafka.common.serialization.StringDeserializer\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"value.deserializer\"<\/span>, <span class=\"hljs-string\">\"org.apache.kafka.common.serialization.StringDeserializer\"<\/span>);\r\n\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(Arrays.asList(<span class=\"hljs-string\">\"topic1\"<\/span>), <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ConsumerRebalanceListener<\/span>() {\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onPartitionsAssigned<\/span><span class=\"hljs-params\">(Collection&lt;TopicPartition&gt; partitions)<\/span> {\r\n        <span class=\"hljs-keyword\">for<\/span> (TopicPartition partition : partitions) {\r\n            <span class=\"hljs-keyword\">if<\/span> (partition.partition() == <span class=\"hljs-number\">1<\/span>) {\r\n                <span class=\"hljs-comment\">\/\/ \u8fc7\u6ee4\u6307\u5b9a\u5206\u533a<\/span>\r\n                consumer.seek(partition, <span class=\"hljs-number\">0<\/span>);\r\n            }\r\n        }\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onPartitionsRevoked<\/span><span class=\"hljs-params\">(Collection&lt;TopicPartition&gt; partitions)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u64a4\u9500\u5206\u533a\u8fc7\u6ee4\u6761\u4ef6<\/span>\r\n    }\r\n});\r\n<\/code><\/pre>\n<ol>\n<li>\u30aa\u30d5\u30bb\u30c3\u30c8\u30d5\u30a3\u30eb\u30bf:ConsumerRebalanceListener\u306eonPartitionsAssigned()\u30e1\u30bd\u30c3\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u6d88\u8cbb\u8005\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u30d5\u30a3\u30eb\u30bf\u6761\u4ef6\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><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(<span class=\"hljs-string\">\"bootstrap.servers\"<\/span>, <span class=\"hljs-string\">\"localhost:9092\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"group.id\"<\/span>, <span class=\"hljs-string\">\"test-group\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"key.deserializer\"<\/span>, <span class=\"hljs-string\">\"org.apache.kafka.common.serialization.StringDeserializer\"<\/span>);\r\nprops.put(<span class=\"hljs-string\">\"value.deserializer\"<\/span>, <span class=\"hljs-string\">\"org.apache.kafka.common.serialization.StringDeserializer\"<\/span>);\r\n\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(Arrays.asList(<span class=\"hljs-string\">\"topic1\"<\/span>), <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ConsumerRebalanceListener<\/span>() {\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onPartitionsAssigned<\/span><span class=\"hljs-params\">(Collection&lt;TopicPartition&gt; partitions)<\/span> {\r\n        <span class=\"hljs-keyword\">for<\/span> (TopicPartition partition : partitions) {\r\n            <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u504f\u79fb\u91cf\u8fc7\u6ee4\u6761\u4ef6<\/span>\r\n            consumer.seek(partition, <span class=\"hljs-number\">10<\/span>);\r\n        }\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onPartitionsRevoked<\/span><span class=\"hljs-params\">(Collection&lt;TopicPartition&gt; partitions)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u64a4\u9500\u504f\u79fb\u91cf\u8fc7\u6ee4\u6761\u4ef6<\/span>\r\n    }\r\n});\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u65b9\u6cd5\u3067\u3001Kafka\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u30cb\u30fc\u30ba\u306b\u5fdc\u3058\u3066\u3001\u9069\u5207\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u65b9\u6cd5\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306fKafka\u306eConsumer API\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Consumer API\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30ad\u30fc\u5024\u3001\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u306a\u3069\u306e\u5c5e\u6027\u306b\u57fa\u3065\u3044\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-100226","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>Java\u3067Kafka\u30d5\u30a3\u30eb\u30bf\u51e6\u7406\u3092\u884c\u3046\u65b9\u6cd5\u306f\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067kafka\u30d5\u30a3\u30eb\u30bf\u51e6\u7406\u3092\u884c\u3046\u65b9\u6cd5\u306f\uff1f\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" 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