{"id":47021,"date":"2024-12-02T16:00:39","date_gmt":"2024-12-02T08:00:39","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47021\/"},"modified":"2024-12-02T16:00:39","modified_gmt":"2024-12-02T08:00:39","slug":"java%e5%87%bd%e6%95%b0%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8%e5%8f%91%e5%b8%83-%e8%ae%a2%e9%98%85%e6%a8%a1%e5%bc%8f%e6%8f%90%e5%8d%87%e4%bb%a3%e7%a0%81%e5%8f%af%e5%a4%8d%e7%94%a8%e6%80%a7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47021\/","title":{"rendered":"Java\u51fd\u6570\u5982\u4f55\u5229\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u63d0\u5347\u4ee3\u7801\u53ef\u590d\u7528\u6027\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Java\u51fd\u6570\u5982\u4f55\u5229\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u63d0\u5347\u4ee3\u7801\u53ef\u590d\u7528\u6027\uff1f<\/h1>\n

\u6587\u7ae0<\/span>\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u719f\u6089\uff1f\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300aJava\u51fd\u6570\u5982\u4f55\u5229\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u63d0\u5347\u4ee3\u7801\u53ef\u590d\u7528\u6027\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u5728\u770b\u5b8c\u672c\u7bc7\u6587\u7ae0\u540e\uff0c\u6709\u66f4\u597d\u7684\u5efa\u8bae\u6216\u8005\u53d1\u73b0\u54ea\u91cc\u6709\u95ee\u9898\uff0c\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u79ef\u6781\u8bc4\u8bba\u6307\u51fa\uff0c\u8c22\u8c22\uff01\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u52a0\u6cb9\u8fdb\u6b65\uff01<\/p>\n

\"Java\u51fd\u6570\u5982\u4f55\u5229\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u63d0\u5347\u4ee3\u7801\u53ef\u590d\u7528\u6027\uff1f\u63d2\u56fe\"<\/p>\n

\u5229\u7528 Java \u51fd\u6570\u548c\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u589e\u5f3a\u4ee3\u7801\u53ef\u590d\u7528\u6027<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u662f\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5b83\u5141\u8bb8\u591a\u4e2a\u4e8b\u4ef6\u6d88\u8d39\u8005\u8ba2\u9605\u4e8b\u4ef6\u53d1\u5e03\u8005\u53d1\u5e03\u7684\u4e8b\u4ef6\u3002\u8fd9\u79cd\u6a21\u5f0f\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u590d\u7528\u6027\uff0c\u7279\u522b\u662f\u5bf9\u4e8e\u4e8b\u4ef6\u9a71\u52a8\u7684\u7cfb\u7edf\u3002<\/p>\n

\u5b9e\u73b0<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 Google Cloud Pub\/Sub \u5e93\u6765\u5b9e\u73b0\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u3002\u8be5\u5e93\u63d0\u4f9b\u4e86 Publisher<\/code> \u548c Subscriber<\/code> \u7c7b\u6765\u5206\u522b\u53d1\u5e03\u548c\u8ba2\u9605\u4e8b\u4ef6\u3002<\/p>\n

\u4e3a\u4e86\u4f7f\u7528 Pub\/Sub\uff0c\u9996\u5148\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u9879\u76ee\u5e76\u542f\u7528 Pub\/Sub API\u3002\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u53d1\u5e03\u6d88\u606f\uff1a<\/p>\n

import com.google.api.client.util.Base64;\nimport com.google.cloud.pubsub.v1.Publisher;\nimport com.google.protobuf.ByteString;\nimport com.google.pubsub.v1.ProjectTopicName;\nimport com.google.pubsub.v1.PubsubMessage;\nimport java.io.IOException;\n\npublic class MessagePublisher {\n\n  public static void main(String... args) throws Exception {\n    String projectId = \"your-project-id\";\n    String topicId = \"your-topic-id\";\n\n    ProjectTopicName topicName = ProjectTopicName.of(projectId, topicId);\n\n    Publisher publisher = null;\n    try {\n      \/\/ Create a publisher instance with default settings bound to the topic\n      publisher = Publisher.newBuilder(topicName).build();\n\n      String message = \"Hello World!\";\n\n      \/\/ Data must be a bytestring\n      ByteString data = ByteString.copyFromUtf8(message);\n      PubsubMessage pubsubMessage = PubsubMessage.newBuilder().setData(data).build();\n\n      \/\/ Once published, returns a server-assigned message id (unique within the topic)\n      String messageId = publisher.publish(pubsubMessage).get();\n      System.out.println(\"Published a message with message id: \" + messageId);\n\n    } catch (IOException e) {\n      System.out.println(e.toString());\n    } finally {\n      if (publisher != null) {\n        \/\/ When finished with the publisher, shutdown to free up resources.\n        publisher.shutdown();\n        publisher.awaitTermination(1, TimeUnit.MINUTES);\n      }\n    }\n  }\n}<\/pre>\n
\u6d88\u606f\u53d1\u5e03\u5230\u4e3b\u9898\u540e\uff0c\u53ef\u4ee5\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u8ba2\u9605\u8005\u63a5\u6536\u3002\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u8ba2\u9605\u6d88\u606f\uff1a<\/p>\n
import com.google.cloud.pubsub.v1.AckReplyConsumer;\nimport com.google.cloud.pubsub.v1.MessageReceiver;\nimport com.google.cloud.pubsub.v1.Subscriber;\nimport com.google.pubsub.v1.ProjectSubscriptionName;\nimport com.google.pubsub.v1.PubsubMessage;\nimport java.util.concurrent.TimeUnit;\nimport java.util.concurrent.TimeoutException;\n\npublic class MessageSubscriber {\n\n  public static void main(String... args) throws Exception {\n    String projectId = \"your-project-id\";\n    String subscriptionId = \"your-subscription-id\";\n\n    ProjectSubscriptionName subscriptionName =\n        ProjectSubscriptionName.of(projectId, subscriptionId);\n\n    Subscriber subscriber = null;\n    try {\n      subscriber = Subscriber.newBuilder(subscriptionName, new MessageReceiver() {\n        @Override\n        public void receiveMessage(PubsubMessage message, AckReplyConsumer consumer) {\n          \/\/ Handle incoming message, then ack the received message.\n          System.out.println(\"Id: \" + message.getMessageId());\n          System.out.println(\"Data: \" + message.getData().toStringUtf8());\n          consumer.ack();\n        }\n      }).build();\n      \/\/ Start the subscriber.\n      subscriber.startAsync().awaitRunning();\n      System.out.printf(\"Listening for messages on %s:\\n\", subscriptionName.toString());\n      \/\/ Allow the subscriber to run for 30s unless an unrecoverable error occurs.\n      subscriber.awaitTerminated(30, TimeUnit.SECONDS);\n    } catch (TimeoutException timeoutException) {\n      \/\/ Shut down the subscriber after 30s. Stop receiving messages.\n      subscriber.stopAsync();\n    }\n  }\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4ee5\u4e0b\u662f\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u5982\u4f55\u63d0\u9ad8\u4ee3\u7801\u53ef\u590d\u7528\u6027\u7684\u4e00\u4e2a\u5b9e\u6218\u6848\u4f8b\uff1a<\/p>\n
    \n
  • \u5fae\u670d\u52a1\u67b6\u6784\uff1a<\/strong>\u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\uff0c\u4e0d\u540c\u7684\u670d\u52a1\u53ef\u4ee5\u4f5c\u4e3a\u72ec\u7acb\u7684\u53d1\u5e03\u8005\u548c\u8ba2\u9605\u8005\u3002\u8fd9\u5141\u8bb8\u670d\u52a1\u677e\u6563\u8026\u5408\uff0c\u5e76\u4f7f\u5f00\u53d1\u548c\u7ef4\u62a4\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002<\/li>\n
  • \u4e8b\u4ef6\u9a71\u52a8\u7cfb\u7edf\uff1a<\/strong>\u4e8b\u4ef6\u9a71\u52a8\u7cfb\u7edf\u4f7f\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u6765\u89e6\u53d1\u57fa\u4e8e\u4e8b\u4ef6\u7684\u52a8\u4f5c\u3002\u8fd9\u53ef\u4ee5\u7b80\u5316\u7cfb\u7edf\u8bbe\u8ba1\u5e76\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u53ef\u6269\u5c55\u6027\u3002<\/li>\n
  • \u6570\u636e\u5904\u7406\u7ba1\u9053\uff1a<\/strong>\u6570\u636e\u5904\u7406\u7ba1\u9053\u53ef\u4ee5\u4f7f\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u5c06\u6570\u636e\u4ece\u4e00\u4e2a\u9636\u6bb5\u79fb\u52a8\u5230\u53e6\u4e00\u4e2a\u9636\u6bb5\u3002\u8fd9\u5141\u8bb8\u6570\u636e\u5904\u7406\u7ba1\u9053\u4ee5\u53ef\u4f38\u7f29\u4e14\u677e\u6563\u8026\u5408\u7684\u65b9\u5f0f\u6784\u5efa\u3002<\/li>\n<\/ul>\n
    \u4eca\u5929\u5173\u4e8e\u300aJava\u51fd\u6570\u5982\u4f55\u5229\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u63d0\u5347\u4ee3\u7801\u53ef\u590d\u7528\u6027\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java\u51fd\u6570\u5982\u4f55\u5229\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u63d0\u5347\u4ee3\u7801\u53ef\u590d\u7528\u6027\uff1f \u6587\u7ae0\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u719f\u6089\uff1f\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300aJava\u51fd\u6570\u5982\u4f55\u5229\u7528\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u63d0\u5347\u4ee3\u7801\u53ef\u590d\u7528\u6027\uff1f\u300b\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u5728\u770b\u5b8c\u672c\u7bc7\u6587\u7ae0\u540e\uff0c\u6709\u66f4\u597d\u7684\u5efa\u8bae\u6216\u8005\u53d1\u73b0\u54ea\u91cc\u6709\u95ee\u9898\uff0c\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u79ef\u6781\u8bc4\u8bba\u6307\u51fa\uff0c\u8c22\u8c22\uff01\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u52a0\u6cb9\u8fdb\u6b65\uff01 \u5229\u7528 Java \u51fd\u6570\u548c\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u589e\u5f3a\u4ee3\u7801\u53ef\u590d\u7528\u6027 \u5728 Java \u4e2d\uff0c\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u662f\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5b83\u5141\u8bb8\u591a\u4e2a\u4e8b\u4ef6\u6d88\u8d39\u8005\u8ba2\u9605\u4e8b\u4ef6\u53d1\u5e03\u8005\u53d1\u5e03\u7684\u4e8b\u4ef6\u3002\u8fd9\u79cd\u6a21\u5f0f\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u590d\u7528\u6027\uff0c\u7279\u522b\u662f\u5bf9\u4e8e\u4e8b\u4ef6\u9a71\u52a8\u7684\u7cfb\u7edf\u3002 \u5b9e\u73b0 \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 Google Cloud Pub\/Sub \u5e93\u6765\u5b9e\u73b0\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u3002\u8be5\u5e93\u63d0\u4f9b\u4e86 Publisher \u548c Subscriber \u7c7b\u6765\u5206\u522b\u53d1\u5e03\u548c\u8ba2\u9605\u4e8b\u4ef6\u3002 \u4e3a\u4e86\u4f7f\u7528 Pub\/Sub\uff0c\u9996\u5148\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u9879\u76ee\u5e76\u542f\u7528 Pub\/Sub API\u3002\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u53d1\u5e03\u6d88\u606f\uff1a import com.google.api.client.util.Base64; import com.google.cloud.pubsub.v1.Publisher; import com.google.protobuf.ByteString; import com.google.pubsub.v1.ProjectTopicName; import com.google.pubsub.v1.PubsubMessage; import java.io.IOException; public class MessagePublisher { public static void main(String… args) throws Exception { String projectId = “your-project-id”; String topicId = […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-47021","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=47021"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47021\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47021"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47021"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}