{"id":325,"date":"2023-12-23T09:57:23","date_gmt":"2023-12-23T01:57:23","guid":{"rendered":"https:\/\/www.liaoxinghui.com\/?p=325"},"modified":"2023-12-23T09:57:25","modified_gmt":"2023-12-23T01:57:25","slug":"kafka%e7%9a%84%e4%b8%80%e4%ba%9b%e4%bf%a1%e6%81%af","status":"publish","type":"post","link":"https:\/\/www.liaoxinghui.com\/?p=325","title":{"rendered":"kafka\u7684\u4e00\u4e9b\u4fe1\u606f"},"content":{"rendered":"<h3 class=\"wp-block-heading\">\u4ec0\u4e48\u662fKafka<\/h3>\n<p class=\"wp-block-paragraph\">Apache Kafka\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u6d41\u5904\u7406\u5e73\u53f0\uff0c\u7531LinkedIn\u516c\u53f8\u5f00\u53d1\u5e76\u4e8e2011\u5e74\u8d21\u732e\u7ed9Apache\u8f6f\u4ef6\u57fa\u91d1\u4f1a\u3002\u5b83\u4e3b\u8981\u7528\u4e8e\u6784\u5efa\u5b9e\u65f6\u7684\u6570\u636e\u7ba1\u9053\u548c\u6d41\u5e94\u7528\u7a0b\u5e8f\u3002Kafka\u80fd\u591f\u4ee5\u9ad8\u541e\u5410\u91cf\u3001\u53ef\u6269\u5c55\u6027\u548c\u5bb9\u9519\u6027\u7684\u65b9\u5f0f\u5904\u7406\u5927\u91cf\u6570\u636e\u6d41\u3002\u5b83\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u5e7f\u6cdb\u5e94\u7528\uff0c\u7279\u522b\u662f\u5728\u9700\u8981\u5904\u7406\u5927\u89c4\u6a21\u5b9e\u65f6\u6570\u636e\u7684\u573a\u666f\u4e2d\u3002<\/p>\n<p class=\"wp-block-paragraph\">Kafka\u7684\u4e3b\u8981\u7279\u70b9\u5305\u62ec\uff1a<\/p>\n<ol class=\"wp-block-list\">\n<li><strong>\u53d1\u5e03-\u8ba2\u9605\u6d88\u606f\u7cfb\u7edf<\/strong>\uff1aKafka\u5141\u8bb8\u751f\u4ea7\u8005\u53d1\u9001\u6d88\u606f\u5230\u4e3b\u9898\uff0c\u6d88\u8d39\u8005\u8ba2\u9605\u4e3b\u9898\u4ee5\u63a5\u6536\u6d88\u606f\u3002<\/li>\n\n<li><strong>\u9ad8\u541e\u5410\u91cf<\/strong>\uff1aKafka\u652f\u6301\u9ad8\u901f\u8bfb\u5199\u64cd\u4f5c\uff0c\u9002\u5408\u5904\u7406\u5927\u91cf\u6570\u636e\u3002<\/li>\n\n<li><strong>\u6301\u4e45\u5316<\/strong>\uff1aKafka\u5c06\u6d88\u606f\u6301\u4e45\u5316\u5230\u78c1\u76d8\uff0c\u4fdd\u8bc1\u6570\u636e\u4e0d\u4f1a\u56e0\u4e3a\u7cfb\u7edf\u6545\u969c\u800c\u4e22\u5931\u3002<\/li>\n\n<li><strong>\u53ef\u6269\u5c55\u6027<\/strong>\uff1aKafka\u53ef\u4ee5\u901a\u8fc7\u589e\u52a0\u66f4\u591a\u7684broker\u6765\u6a2a\u5411\u6269\u5c55\uff0c\u4ee5\u652f\u6301\u66f4\u5927\u7684\u6570\u636e\u6d41\u3002<\/li>\n\n<li><strong>\u5bb9\u9519\u6027<\/strong>\uff1aKafka\u901a\u8fc7\u526f\u672c\u673a\u5236\u786e\u4fdd\u6570\u636e\u7684\u9ad8\u53ef\u7528\u6027\u548c\u5bb9\u9519\u6027\u3002<\/li>\n\n<li><strong>\u5b9e\u65f6\u5904\u7406<\/strong>\uff1aKafka\u80fd\u591f\u5728\u5ef6\u8fdf\u975e\u5e38\u4f4e\u7684\u60c5\u51b5\u4e0b\u5904\u7406\u6570\u636e\u6d41\uff0c\u9002\u5408\u9700\u8981\u5b9e\u65f6\u5904\u7406\u7684\u5e94\u7528\u3002<\/li>\n\n<li><strong>\u6d41\u5904\u7406<\/strong>\uff1aKafka\u6709\u4e00\u4e2a\u6d41\u5904\u7406API\uff08Kafka Streams\uff09\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u6d88\u606f\u4ea7\u751f\u540e\u7acb\u5373\u8fdb\u884c\u5904\u7406\u3002<\/li>\n<\/ol>\n<p class=\"wp-block-paragraph\">Kafka\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u65e5\u5fd7\u6536\u96c6\u3001\u5b9e\u65f6\u76d1\u63a7\u3001\u4e8b\u4ef6\u6e90\u3001\u6d41\u5f0f\u5904\u7406\u3001\u7f51\u7ad9\u6d3b\u52a8\u8ddf\u8e2a\u7b49\u591a\u79cd\u573a\u666f\u3002\u5927\u578b\u4e92\u8054\u7f51\u516c\u53f8\u5982LinkedIn\u3001Netflix\u3001Uber\u7b49\u90fd\u5728\u4f7f\u7528Kafka\u6765\u5904\u7406\u4ed6\u4eec\u7684\u5b9e\u65f6\u6570\u636e\u6d41\u3002<\/p>\n<p class=\"wp-block-paragraph\"><\/p>\n<h3 class=\"wp-block-heading\">\u5b83\u4e3a\u4ec0\u4e48\u5feb\uff1f<\/h3>\n<p class=\"wp-block-paragraph\">Kafka\u5feb\u7684\u539f\u56e0\u4e3b\u8981\u5f52\u7ed3\u4e3a\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ol class=\"wp-block-list\">\n<li><strong>\u9ad8\u541e\u5410\u91cf<\/strong>\uff1aKafka\u8bbe\u8ba1\u4e4b\u521d\u5c31\u8003\u8651\u4e86\u9ad8\u541e\u5410\u91cf\uff0c\u80fd\u591f\u5904\u7406\u5927\u91cf\u7684\u6570\u636e\u6d88\u606f\u3002<\/li>\n\n<li><strong>\u6301\u4e45\u5316<\/strong>\uff1aKafka\u901a\u8fc7\u5c06\u6d88\u606f\u6301\u4e45\u5316\u5230\u78c1\u76d8\uff0c\u5e76\u652f\u6301\u6570\u636e\u7684\u526f\u672c\uff0c\u786e\u4fdd\u6570\u636e\u4e0d\u4f1a\u56e0\u4e3a\u7cfb\u7edf\u6545\u969c\u800c\u4e22\u5931\uff0c\u540c\u65f6\u4e5f\u63d0\u9ad8\u4e86\u8bfb\u5199\u901f\u5ea6\u3002<\/li>\n\n<li><strong>\u5206\u5e03\u5f0f\u7cfb\u7edf<\/strong>\uff1aKafka\u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u7cfb\u7edf\uff0c\u53ef\u4ee5\u6a2a\u5411\u6269\u5c55\uff0c\u901a\u8fc7\u589e\u52a0\u66f4\u591a\u7684\u670d\u52a1\u5668\u6765\u63d0\u9ad8\u5904\u7406\u80fd\u529b\u3002<\/li>\n\n<li><strong>\u96f6\u62f7\u8d1d\u6280\u672f<\/strong>\uff1aKafka\u5229\u7528\u64cd\u4f5c\u7cfb\u7edf\u7684\u96f6\u62f7\u8d1d\uff08zero-copy\uff09\u6280\u672f\u6765\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\uff0c\u51cf\u5c11\u4e86\u6570\u636e\u5728\u7528\u6237\u7a7a\u95f4\u548c\u5185\u6838\u7a7a\u95f4\u4e4b\u95f4\u7684\u62f7\u8d1d\u6b21\u6570\u3002<\/li>\n\n<li><strong>\u6279\u5904\u7406<\/strong>\uff1aKafka\u652f\u6301\u4ee5\u6279\u7684\u5f62\u5f0f\u5904\u7406\u6d88\u606f\uff0c\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u7f51\u7edc\u8bf7\u6c42\u7684\u6b21\u6570\uff0c\u63d0\u9ad8\u6574\u4f53\u6548\u7387\u3002<\/li>\n\n<li><strong>\u7b80\u5316\u7684\u5b58\u50a8\u673a\u5236<\/strong>\uff1aKafka\u4f7f\u7528\u7b80\u5355\u7684\u987a\u5e8f\u5b58\u50a8\u6587\u4ef6\u6765\u5b58\u50a8\u6d88\u606f\uff0c\u8fd9\u79cd\u65b9\u5f0f\u5bf9\u4e8e\u987a\u5e8f\u8bfb\u5199\u975e\u5e38\u9ad8\u6548\u3002<\/li>\n<\/ol>\n<p class=\"wp-block-paragraph\"><\/p>\n<p class=\"wp-block-paragraph\"><\/p>\n<h3 class=\"wp-block-heading\">\u90e8\u7f72Kafka<\/h3>\n<p class=\"wp-block-paragraph\">\u90e8\u7f72Apache Kafka\u5230CentOS 7\u7684\u6b65\u9aa4\u5927\u81f4\u5982\u4e0b\u3002\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u60a8\u7684\u7cfb\u7edf\u6ee1\u8db3\u6700\u4f4e\u8981\u6c42\uff0c\u4f8b\u5982\u5df2\u5b89\u88c5Java\u73af\u5883\uff0c\u56e0\u4e3aKafka\u662f\u7528Scala\u548cJava\u7f16\u5199\u7684\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u6b65\u9aa4 1: \u5b89\u88c5Java<\/h3>\n<p class=\"wp-block-paragraph\">Kafka\u9700\u8981Java\u73af\u5883\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5OpenJDK 8:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">sudo yum install java-1.8.0-openjdk<\/pre>\n<p class=\"wp-block-paragraph\">\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u786e\u8ba4Java\u7248\u672c\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">java -version<\/pre>\n<h3 class=\"wp-block-heading\">\u6b65\u9aa4 2: \u4e0b\u8f7d\u548c\u89e3\u538bKafka<\/h3>\n<p class=\"wp-block-paragraph\">\u4eceApache Kafka\u7684\u5b98\u65b9\u7f51\u7ad9\u4e0b\u8f7d\u6700\u65b0\u7248\u672c\u7684Kafka\u3002\u53ef\u4ee5\u4f7f\u7528<code>wget<\/code>\u547d\u4ee4\u6765\u4e0b\u8f7d\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">wget http:\/\/apache.mirrors.pair.com\/kafka\/2.8.0\/kafka_2.13-2.8.0.tgz<\/pre>\n<p class=\"wp-block-paragraph\">\u8bf7\u6ce8\u610f\uff0c\u4e0b\u8f7d\u94fe\u63a5\u53ef\u80fd\u4f1a\u968f\u7740\u7248\u672c\u7684\u66f4\u65b0\u800c\u53d8\u5316\uff0c\u8bf7\u4ece\u5b98\u65b9\u7f51\u7ad9\u83b7\u53d6\u6700\u65b0\u7684\u4e0b\u8f7d\u94fe\u63a5\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u4e0b\u8f7d\u5b8c\u6210\u540e\uff0c\u89e3\u538bKafka\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">tar -xzf kafka_2.13-2.8.0.tgz\ncd kafka_2.13-2.8.0<\/pre>\n<h3 class=\"wp-block-heading\">\u6b65\u9aa4 3: \u914d\u7f6eKafka<\/h3>\n<p class=\"wp-block-paragraph\">Kafka\u4f7f\u7528<code>config\/server.properties<\/code>\u6587\u4ef6\u4f5c\u4e3a\u9ed8\u8ba4\u914d\u7f6e\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\u6253\u5f00\u5e76\u4fee\u6539\u5b83\uff0c\u4f46\u5bf9\u4e8e\u5927\u591a\u6570\u60c5\u51b5\uff0c\u53ef\u4ee5\u4f7f\u7528\u9ed8\u8ba4\u914d\u7f6e\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u6b65\u9aa4 4: \u542f\u52a8ZooKeeper\u670d\u52a1<\/h3>\n<p class=\"wp-block-paragraph\">Kafka\u4f7f\u7528ZooKeeper\u6765\u7ba1\u7406\u96c6\u7fa4\u72b6\u6001\u548c\u5143\u6570\u636e\u3002Kafka\u5305\u5185\u5305\u542b\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u5355\u8282\u70b9ZooKeeper\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u542f\u52a8\u5b83\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">bin\/zookeeper-server-start.sh config\/zookeeper.properties<\/pre>\n<p class=\"wp-block-paragraph\">\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u6211\u4eec\u5e94\u8be5\u4f7f\u7528\u72ec\u7acb\u7684ZooKeeper\u96c6\u7fa4\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u6b65\u9aa4 5: \u542f\u52a8Kafka\u670d\u52a1\u5668<\/h3>\n<p class=\"wp-block-paragraph\">\u5728\u53e6\u4e00\u4e2a\u7ec8\u7aef\u4e2d\uff0c\u542f\u52a8Kafka\u670d\u52a1\u5668\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">bin\/kafka-server-start.sh config\/server.properties<\/pre>\n<p class=\"wp-block-paragraph\">\u73b0\u5728Kafka\u670d\u52a1\u5668\u5e94\u8be5\u5df2\u7ecf\u5728\u8fd0\u884c\u4e86\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u6b65\u9aa4 6: \u521b\u5efa\u4e00\u4e2aKafka\u4e3b\u9898<\/h3>\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u80fd\u591f\u53d1\u9001\u548c\u63a5\u6536\u6d88\u606f\uff0c\u9700\u8981\u521b\u5efa\u4e00\u4e2aKafka\u4e3b\u9898\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201ctest\u201d\u7684\u4e3b\u9898\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">bin\/kafka-topics.sh --create --topic test --bootstrap-server localhost:9092 --replication-factor 1 --partitions 1<\/pre>\n<h3 class=\"wp-block-heading\">\u6b65\u9aa4 7: \u6d4b\u8bd5Kafka\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005<\/h3>\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u901a\u8fc7Kafka\u547d\u4ee4\u884c\u5de5\u5177\u6765\u6d4b\u8bd5\u6d88\u606f\u7684\u53d1\u9001\u548c\u63a5\u6536\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u542f\u52a8\u751f\u4ea7\u8005\u5e76\u53d1\u9001\u6d88\u606f\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">bin\/kafka-console-producer.sh --broker-list localhost:9092 --topic test<\/pre>\n<p class=\"wp-block-paragraph\">\u5728\u547d\u4ee4\u884c\u4e2d\u8f93\u5165\u6d88\u606f\uff0c\u6309\u56de\u8f66\u53d1\u9001\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u5728\u53e6\u4e00\u4e2a\u7ec8\u7aef\u4e2d\uff0c\u542f\u52a8\u6d88\u8d39\u8005\u6765\u8bfb\u53d6\u6d88\u606f\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">bin\/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test --from-beginning<\/pre>\n<p class=\"wp-block-paragraph\">\u73b0\u5728\uff0c\u6211\u4eec\u5e94\u8be5\u80fd\u591f\u5728\u6d88\u8d39\u8005\u7ec8\u7aef\u770b\u5230\u751f\u4ea7\u8005\u53d1\u9001\u7684\u6d88\u606f\u3002<\/p>\n<p class=\"wp-block-paragraph\"><\/p>\n<p class=\"wp-block-paragraph\">Java\u793a\u4f8b\uff1a<\/p>\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684Java\u7a0b\u5e8f\u793a\u4f8b\uff0c\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528Apache Kafka\u7684\u751f\u4ea7\u8005\uff08Producer\uff09\u548c\u6d88\u8d39\u8005\uff08Consumer\uff09\u3002\u8fd9\u4e2a\u4f8b\u5b50\u5047\u8bbe\u5df2\u7ecf\u6709\u4e00\u4e2a\u8fd0\u884c\u4e2d\u7684Kafka\u670d\u52a1\u5668\u548c\u4e00\u4e2a\u540d\u4e3a\u201ctest\u201d\u7684\u4e3b\u9898\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u9996\u5148\uff0c\u786e\u4fdd\u5c06Kafka\u5ba2\u6237\u7aef\u5e93\u6dfb\u52a0\u5230Java\u9879\u76ee\u4e2d\u3002\u5982\u679c\u4f7f\u7528Maven\uff0c\u53ef\u4ee5\u5728<code>pom.xml<\/code>\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8d56\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\n    <!-- Kafka\u5ba2\u6237\u7aef\u4f9d\u8d56 -->\n    \n        org.apache.kafka\n        kafka-clients\n        2.8.0 <!-- \u7248\u672c\u81ea\u5b9a\u4e49 -->\n    \n<\/pre>\n<h3 class=\"wp-block-heading\">Kafka\u751f\u4ea7\u8005\u793a\u4f8b\uff08Producer\uff09<\/h3>\n<p class=\"wp-block-paragraph\">\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a<code>SimpleProducer.java<\/code>\u7684\u6587\u4ef6\uff0c\u5e76\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import org.apache.kafka.clients.producer.KafkaProducer;\nimport org.apache.kafka.clients.producer.Producer;\nimport org.apache.kafka.clients.producer.ProducerRecord;\n\nimport java.util.Properties;\n\npublic class SimpleProducer {\n    public static void main(String[] args) {\n        String topicName = \"test\"; \/\/ Kafka\u4e3b\u9898\n        String msg = \"Hello Kafka\"; \/\/ \u53d1\u9001\u7684\u6d88\u606f\n\n        \/\/ \u8bbe\u7f6e\u751f\u4ea7\u8005\u5c5e\u6027\n        Properties props = new Properties();\n        props.put(\"bootstrap.servers\", \"localhost:9092\"); \/\/ Kafka\u670d\u52a1\u5668\u5730\u5740\n        props.put(\"key.serializer\", \"org.apache.kafka.common.serialization.StringSerializer\");\n        props.put(\"value.serializer\", \"org.apache.kafka.common.serialization.StringSerializer\");\n\n        \/\/ \u521b\u5efa\u751f\u4ea7\u8005\n        Producer producer = new KafkaProducer(props);\n\n        \/\/ \u53d1\u9001\u6d88\u606f\n        producer.send(new ProducerRecord(topicName, msg));\n\n        \/\/ \u5173\u95ed\u751f\u4ea7\u8005\n        producer.close();\n\n        System.out.println(\"\u6d88\u606f\u53d1\u9001\u5b8c\u6bd5\");\n    }\n}<\/pre>\n<h3 class=\"wp-block-heading\">Kafka\u6d88\u8d39\u8005\u793a\u4f8b\uff08Consumer\uff09<\/h3>\n<p class=\"wp-block-paragraph\">\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a<code>SimpleConsumer.java<\/code>\u7684\u6587\u4ef6\uff0c\u5e76\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import org.apache.kafka.clients.consumer.Consumer;\nimport org.apache.kafka.clients.consumer.ConsumerConfig;\nimport org.apache.kafka.clients.consumer.ConsumerRecords;\nimport org.apache.kafka.clients.consumer.KafkaConsumer;\nimport org.apache.kafka.clients.consumer.ConsumerRecord;\n\nimport java.time.Duration;\nimport java.util.Collections;\nimport java.util.Properties;\n\npublic class SimpleConsumer {\n    public static void main(String[] args) {\n        String topicName = \"test\"; \/\/ Kafka\u4e3b\u9898\n\n        \/\/ \u8bbe\u7f6e\u6d88\u8d39\u8005\u5c5e\u6027\n        Properties props = new Properties();\n        props.put(\"bootstrap.servers\", \"localhost:9092\"); \/\/ Kafka\u670d\u52a1\u5668\u5730\u5740\n        props.put(\"group.id\", \"test-group\"); \/\/ \u6d88\u8d39\u8005\u7fa4\u7ec4ID\n        props.put(\"key.deserializer\", \"org.apache.kafka.common.serialization.StringDeserializer\");\n        props.put(\"value.deserializer\", \"org.apache.kafka.common.serialization.StringDeserializer\");\n        props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, \"earliest\"); \/\/ \u4ece\u6700\u65e9\u7684\u6d88\u606f\u5f00\u59cb\u8bfb\u53d6\n\n        \/\/ \u521b\u5efa\u6d88\u8d39\u8005\n        Consumer consumer = new KafkaConsumer(props);\n\n        \/\/ \u8ba2\u9605\u4e3b\u9898\n        consumer.subscribe(Collections.singletonList(topicName));\n\n        \/\/ \u6301\u7eed\u8bfb\u53d6\u6d88\u606f\n        try {\n            while (true) {\n                ConsumerRecords records = consumer.poll(Duration.ofMillis(100));\n                for (ConsumerRecord record : records) {\n                    System.out.printf(\"\u6536\u5230\u6d88\u606f\uff1aoffset = %d, key = %s, value = %s%n\", record.offset(), record.key(), record.value());\n                }\n            }\n        } finally {\n            consumer.close();\n        }\n    }\n}<\/pre>\n<p class=\"wp-block-paragraph\">\u5728\u8fd0\u884c\u8fd9\u4e9b\u793a\u4f8b\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<ol class=\"wp-block-list\">\n<li><strong>Kafka\u73af\u5883\u51c6\u5907<\/strong>\uff1a\u786e\u4fddKafka\u670d\u52a1\u5668\u6b63\u5728\u8fd0\u884c\uff0c\u5e76\u4e14\u60a8\u5df2\u7ecf\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a\u201ctest\u201d\u7684\u4e3b\u9898\u3002\u5982\u679c\u6ca1\u6709\uff0c\u8bf7\u53c2\u8003\u4e4b\u524d\u7684\u6307\u5bfc\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u4e3b\u9898\u3002<\/li>\n\n<li><strong>\u9879\u76ee\u8bbe\u7f6e<\/strong>\uff1a\u786e\u4fdd\u60a8\u7684Java\u9879\u76ee\u5df2\u7ecf\u6dfb\u52a0\u4e86Kafka\u5ba2\u6237\u7aef\u7684\u4f9d\u8d56\u3002\u5982\u679c\u4f7f\u7528\u7684\u662fMaven\uff0c\u5c31\u50cf\u524d\u9762\u7684<code>pom.xml<\/code>\u914d\u7f6e\u7247\u6bb5\u90a3\u6837\u6dfb\u52a0\u4f9d\u8d56\u3002\u5982\u679c\u4f7f\u7528\u7684\u662fGradle\u6216\u5176\u4ed6\u6784\u5efa\u5de5\u5177\uff0c\u8bf7\u76f8\u5e94\u5730\u6dfb\u52a0Kafka\u5ba2\u6237\u7aef\u5e93\u3002<\/li>\n\n<li><strong>\u7f16\u8bd1\u4ee3\u7801<\/strong>\uff1a\u4f7f\u7528\u60a8\u7684IDE\u6216\u6784\u5efa\u5de5\u5177\u7f16\u8bd1<code>SimpleProducer.java<\/code>\u548c<code>SimpleConsumer.java<\/code>\u3002<\/li>\n\n<li><strong>\u8fd0\u884c\u751f\u4ea7\u8005<\/strong>\uff1a\u9996\u5148\u8fd0\u884c<code>SimpleProducer<\/code>\u7c7b\u3002\u8fd9\u5c06\u53d1\u9001\u4e00\u4e2a\u6d88\u606f\u5230Kafka\u7684\u201ctest\u201d\u4e3b\u9898\u3002<\/li>\n\n<li><strong>\u8fd0\u884c\u6d88\u8d39\u8005<\/strong>\uff1a\u7136\u540e\u8fd0\u884c<code>SimpleConsumer<\/code>\u7c7b\u3002\u5982\u679c\u4e00\u5207\u6b63\u5e38\uff0c\u6d88\u8d39\u8005\u5e94\u8be5\u4f1a\u4ece\u201ctest\u201d\u4e3b\u9898\u63a5\u6536\u5230\u751f\u4ea7\u8005\u53d1\u9001\u7684\u6d88\u606f\uff0c\u5e76\u5c06\u5176\u6253\u5370\u5230\u63a7\u5236\u53f0\u3002<\/li>\n<\/ol>\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff0c\u5728\u5b9e\u9645\u90e8\u7f72\u548c\u6d4b\u8bd5\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u4f60\u7684Kafka\u96c6\u7fa4\u914d\u7f6e\u8c03\u6574\u4ee3\u7801\u4e2d\u7684\u670d\u52a1\u5668\u5730\u5740\u548c\u7aef\u53e3\u53f7\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u6b64\u5916\uff0c\u5982\u679c\u60a8\u7684Kafka\u96c6\u7fa4\u542f\u7528\u4e86\u5b89\u5168\u6027\u7279\u6027\uff08\u5982SASL\u8ba4\u8bc1\u6216SSL\u52a0\u5bc6\uff09\uff0c\u5219\u9700\u8981\u5728\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u5c5e\u6027\u4e2d\u8fdb\u4e00\u6b65\u914d\u7f6e\u76f8\u5173\u7684\u5b89\u5168\u6027\u53c2\u6570\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u4e00\u65e6\u60a8\u7684\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u90fd\u5728\u8fd0\u884c\uff0c\u6211\u4eec\u5e94\u8be5\u80fd\u591f\u770b\u5230\u751f\u4ea7\u8005\u53d1\u9001\u7684\u6d88\u606f\u88ab\u6d88\u8d39\u8005\u63a5\u6536\u5e76\u6253\u5370\u51fa\u6765\u3002\u8fd9\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6f14\u793a\u4e86Kafka\u5ba2\u6237\u7aefAPI\u7684\u57fa\u672c\u7528\u6cd5\uff0c\u5bf9\u4e8e\u5b66\u4e60\u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528Kafka\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662fKafka Apache Kafka\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u6d41\u5904\u7406\u5e73\u53f0\uff0c\u7531LinkedIn\u516c\u53f8\u5f00\u53d1\u5e76\u4e8e2011\u5e74\u8d21\u732e\u7ed9Apache\u8f6f\u4ef6\u57fa\u91d1\u4f1a\u3002\u5b83 &hellip;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,10],"tags":[67,66],"class_list":["post-325","post","type-post","status-publish","format-standard","hentry","category-java","category-10","tag-kafka"],"views":616,"_links":{"self":[{"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/posts\/325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=325"}],"version-history":[{"count":2,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/posts\/325\/revisions"}],"predecessor-version":[{"id":333,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/posts\/325\/revisions\/333"}],"wp:attachment":[{"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}