{"id":10006251,"date":"2022-08-19T02:25:57","date_gmt":"2022-08-18T18:25:57","guid":{"rendered":"https:\/\/ityet.com\/?p=10006251"},"modified":"2022-08-19T02:25:57","modified_gmt":"2022-08-18T18:25:57","slug":"%e5%ae%8c%e6%95%b4%e5%ae%9e%e7%8e%b0-%e9%80%9a%e8%bf%87delayqueue%e5%ae%9e%e7%8e%b0%e5%bb%b6%e6%97%b6%e4%bb%bb%e5%8a%a1","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006251","title":{"rendered":"\u5b8c\u6574\u5b9e\u73b0-\u901a\u8fc7DelayQueue\u5b9e\u73b0\u5ef6\u65f6\u4efb\u52a1"},"content":{"rendered":"<p>\u5b9e\u73b0\u5ef6\u65f6\u4efb\u52a1\u6709\u5f88\u591a\u7684\u65b9\u6cd5\uff0c\u7f51\u4e0a\u5173\u4e8e\u5ef6\u65f6\u4efb\u52a1\u7684\u5b9e\u73b0\u7684\u6587\u7ae0\u5df2\u7ecf\u4e0d\u5c11\u4e86\u3002\u6bd4\u5982\uff1a\u5b9e\u73b0\u5ef6\u65f6\u4efb\u52a1\u768410\u79cd\u65b9\u6cd5\u7b49\u7b49\u3002\u4f46\u662f\u8fd9\u4e9b\u6587\u7ae0\u57fa\u672c\u4e0a\u90fd\u662f\u5c06\u65b9\u6cd5\u5927\u6982\u7684\u5217\u4e3e\u4e00\u4e0b\uff0c\u7ed9\u51fa\u90e8\u5206\u793a\u4f8b\u4ee3\u7801\uff0c\u5bf9\u4e8e\u6709\u7ecf\u9a8c\u7684\u8001\u7a0b\u5e8f\u5458\u53ef\u80fd\u4e00\u770b\u5c31\u77e5\u9053\u8be5\u600e\u4e48\u53bb\u628a\u5b83\u5b9e\u73b0\u5b8c\u6574\uff0c\u4f46\u662f\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\u4e0d\u591f\u53cb\u597d\u3002\u6240\u4ee5\uff0c<strong>\u6211\u6253\u7b97\u5199\u4e00\u4e2a\u7cfb\u5217\u7684\u6587\u7ae0\uff0c\u8be6\u7ec6\u7684\u7ed9\u51fa\u6bcf\u79cd\u5ef6\u65f6\u4efb\u52a1\u7684\u5b9e\u73b0\u65b9\u6cd5\u3001\u5b8c\u6574\u5b9e\u73b0\u4ee3\u7801\uff0c\u4ee5\u53ca\u5de5\u4f5c\u539f\u7406\uff0c\u6b22\u8fce\u5e76\u671f\u5f85\u5927\u5bb6\u5173\u6ce8\u6211<\/strong>\u3002<\/p>\n<blockquote><p>\u5c0f\u6982\u5ff5\uff1a\u4ec0\u4e48\u662f\u5ef6\u65f6\u4efb\u52a1\uff1f\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u4f60\u4e70\u4e86\u4e00\u5f20\u706b\u8f66\u7968\uff0c\u5fc5\u987b\u572830\u5206\u949f\u4e4b\u5185\u4ed8\u6b3e\uff0c\u5426\u5219\u8be5\u8ba2\u5355\u88ab\u81ea\u52a8\u53d6\u6d88\u3002<strong>\u8ba2\u535530\u5206\u949f\u4e0d\u4ed8\u6b3e\u81ea\u52a8\u53d6\u6d88\uff0c\u8fd9\u4e2a\u4efb\u52a1\u5c31\u662f\u4e00\u4e2a\u5ef6\u65f6\u4efb\u52a1\u3002<\/strong><\/p><\/blockquote>\n<h2>\u4e00\u3001DelayQueue\u7684\u5e94\u7528\u539f\u7406<\/h2>\n<p>DelayQueue\u662f\u4e00\u4e2a\u65e0\u754c\u7684BlockingQueue\u7684\u5b9e\u73b0\u7c7b\uff0c\u7528\u4e8e\u653e\u7f6e\u5b9e\u73b0\u4e86Delayed\u63a5\u53e3\u7684\u5bf9\u8c61\uff0c\u5176\u4e2d\u7684\u5bf9\u8c61\u53ea\u80fd\u5728\u5176\u5230\u671f\u65f6\u624d\u80fd\u4ece\u961f\u5217\u4e2d\u53d6\u8d70\u3002<\/p>\n<ul>\n<li>BlockingQueue\u5373\u963b\u585e\u961f\u5217\uff0cjava\u63d0\u4f9b\u7684\u9762\u5411\u591a\u7ebf\u7a0b\u5b89\u5168\u7684\u961f\u5217\u6570\u636e\u7ed3\u6784\uff0c\u5f53\u961f\u5217\u5185\u5143\u7d20\u6570\u91cf\u4e3a0\u7684\u65f6\u5019\uff0c\u8bd5\u56fe\u4ece\u961f\u5217\u5185\u83b7\u53d6\u5143\u7d20\u7684\u7ebf\u7a0b\u5c06\u88ab\u963b\u585e\u6216\u8005\u629b\u51fa\u5f02\u5e38\u3002<\/li>\n<li>\u8fd9\u91cc\u7684\u201c\u65e0\u754c\u201d\u961f\u5217\uff0c\u662f\u6307\u961f\u5217\u7684\u5143\u7d20\u6570\u91cf\u4e0d\u5b58\u5728\u4e0a\u9650\uff0c\u961f\u5217\u7684\u5bb9\u91cf\u4f1a\u968f\u7740\u5143\u7d20\u6570\u91cf\u7684\u589e\u52a0\u800c\u6269\u5bb9\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042339388\" alt=\"\" title=\"\" loading=\"lazy\"><br \/>DelayQueue\u5b9e\u73b0\u4e86BlockingQueue\u63a5\u53e3\uff0c\u6240\u4ee5\u5177\u6709\u65e0\u754c\u3001\u963b\u585e\u7684\u7279\u70b9\uff0c\u9664\u6b64\u4e4b\u5916\u5b83\u81ea\u5df1\u7684\u6838\u5fc3\u7279\u70b9\u5c31\u662f\uff1a<\/p>\n<ul>\n<li><strong>\u653e\u5165\u8be5\u961f\u5217\u7684\u5ef6\u65f6\u4efb\u52a1\u5bf9\u8c61\uff0c\u53ea\u8981\u5230\u8fbe\u5ef6\u65f6\u65f6\u95f4\u4e4b\u540e\u624d\u80fd\u88ab\u53d6\u5230<\/strong>\u3002<\/li>\n<li>DelayQueue \u4e0d\u63a5\u6536null\u5143\u7d20<\/li>\n<li><strong>DelayQueue \u53ea\u63a5\u53d7\u90a3\u4e9b\u5b9e\u73b0\u4e86java.util.concurrent.Delayed\u63a5\u53e3\u7684\u5bf9\u8c61<\/strong><\/li>\n<\/ul>\n<h2>\u4e8c\u3001\u8ba2\u5355\u5ef6\u65f6\u4efb\u52a1\u7684\u5b9e\u73b0<\/h2>\n<p>\u4e86\u89e3\u4e86DelayQueue\u7684\u7279\u70b9\u4e4b\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5229\u7528\u5b83\u6765\u5b9e\u73b0\u5ef6\u65f6\u4efb\u52a1\u4e86\uff0c\u5b9e\u73b0<code>java.util.concurrent.Delayed<\/code>\u63a5\u53e3\u3002<\/p>\n<pre><code>import org.jetbrains.annotations.NotNull;\n\nimport java.text.SimpleDateFormat;\nimport java.util.Date;\nimport java.util.concurrent.Delayed;\nimport java.util.concurrent.TimeUnit;\n\n\/**\n * \u5ef6\u65f6\u8ba2\u5355\u4efb\u52a1\n *\/\npublic class OrderDelayObject implements Delayed {\n  private String name;\n  private long delayTime;   \/\/\u5ef6\u65f6\u65f6\u95f4\n  \/\/\u5b9e\u9645\u4e1a\u52a1\u4e2d\u8fd9\u91cc\u4f20\u8ba2\u5355\u4fe1\u606f\u5bf9\u8c61\uff0c\u6211\u8fd9\u91cc\u53ea\u505ademo\uff0c\u6240\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u4e86\n  private String order;\n\n  public OrderDelayObject(String name, long delayTime, String order) {\n    this.name = name;\n    \/\/\u5ef6\u65f6\u65f6\u95f4\u52a0\u4e0a\u5f53\u524d\u65f6\u95f4\n    this.delayTime = System.currentTimeMillis() + delayTime;\n    this.order = order;\n  }\n\n  \/\/\u83b7\u53d6\u5ef6\u65f6\u4efb\u52a1\u7684\u5012\u8ba1\u65f6\u65f6\u95f4\n  @Override\n  public long getDelay(TimeUnit unit) {\n    long diff = delayTime - System.currentTimeMillis();\n    return unit.convert(diff, TimeUnit.MILLISECONDS);\n  }\n\n  \/\/\u5ef6\u65f6\u4efb\u52a1\u961f\u5217\uff0c\u6309\u7167\u5ef6\u65f6\u65f6\u95f4\u5143\u7d20\u6392\u5e8f\uff0c\u5b9e\u73b0Comparable\u63a5\u53e3\n  @Override\n  public int compareTo(@NotNull Delayed obj) {\n    return Long.compare(this.delayTime, ((OrderDelayObject) obj).delayTime);\n  }\n\n  @Override\n  public String toString() {\n    Date date = new Date(delayTime);\n    SimpleDateFormat sd = new SimpleDateFormat(&quot;yyyy-MM-dd HH:mm:ss&quot;);\n\n    return &quot;\/nOrderDelayObject:{&quot;\n            + &quot;name=&quot; + name\n            + &quot;, time=&quot; + sd.format(date)\n            + &quot;, order=&quot; + order\n            + &quot;}&quot;;\n  }\n} <\/code><\/pre>\n<ul>\n<li>\u4e0a\u6587\u7c7b\u4e2d\u7684order\u4e3a\u8ba2\u5355\u4fe1\u606f\u5bf9\u8c61\uff0c\u5728\u5b9e\u9645\u7684\u4e1a\u52a1\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u5e94\u8be5\u662f\u4f20\u9012\u8ba2\u5355\u4fe1\u606f\uff0c\u7528\u4e8e\u53d6\u6d88\u8ba2\u5355\u4e1a\u52a1\u7684\u5b9e\u73b0\uff08\u8ba2\u535530\u5206\u949f\u4e0d\u4ed8\u6b3e\u81ea\u52a8\u53d6\u6d88\uff09\u3002<\/li>\n<li>Delayed\u63a5\u53e3\u7ee7\u627f\u81ea Comparable\u63a5\u53e3\uff0c\u6240\u4ee5\u9700\u8981\u5b9e\u73b0compareTo\u65b9\u6cd5\uff0c\u7528\u4e8e\u5ef6\u65f6\u4efb\u52a1\u5728\u961f\u5217\u4e2d\u6309\u7167\u201c\u5ef6\u65f6\u65f6\u95f4\u201d\u8fdb\u884c\u6392\u5e8f\u3002<\/li>\n<li>getDelay\u65b9\u6cd5\u662fDelayed\u63a5\u53e3\u65b9\u6cd5\uff0c\u5b9e\u73b0\u8be5\u65b9\u6cd5\u63d0\u4f9b\u83b7\u53d6\u5ef6\u65f6\u4efb\u52a1\u7684\u5012\u8ba1\u65f6\u65f6\u95f4<\/li>\n<\/ul>\n<h2>\u4e09\u3001\u8ba2\u5355\u5904\u7406<\/h2>\n<p>\u9996\u5148\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u5bb9\u5668\uff0c\u6c38\u4e45\u4fdd\u5b58\u5ef6\u65f6\u4efb\u52a1\u961f\u5217\uff0c\u5982\u679c\u662fSpring\u5f00\u53d1\u73af\u5883\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u505a\u3002<\/p>\n<pre><code>@Bean(&quot;orderDelayQueue&quot;)\npublic DelayQueue&lt;OrderDelayObject&gt; orderDelayQueue(){\n    return new DelayQueue&lt;OrderDelayObject&gt;();\n}<\/code><\/pre>\n<p>\u5f53\u7528\u6237\u4e0b\u5355\u7684\u65f6\u5019\uff0c\u5c06\u8ba2\u5355\u4e0b\u5355\u4efb\u52a1\u653e\u5165\u5ef6\u65f6\u961f\u5217<\/p>\n<pre><code>@Resource\nprivate DelayQueue&lt;OrderDelayObject&gt; orderDelayQueue;\n\n\/\/\u53d1\u8d77\u8ba2\u5355\u4e0b\u5355\u7684\u65f6\u5019\u5c06\u8ba2\u5355\u6f14\u793a\u5bf9\u8c61\u653e\u5165orderDelayQueue\norderDelayQueue.add(\n        new OrderDelayObject(\n                &quot;\u8ba2\u5355\u5ef6\u65f6\u53d6\u6d88\u4efb\u52a1&quot;,\n                30 * 60 * 1000,    \/\/\u5ef6\u65f630\u5206\u949f\n                &quot;\u5ef6\u65f6\u4efb\u52a1\u8ba2\u5355\u5bf9\u8c61\u4fe1\u606f&quot;\n        )\n);<\/code><\/pre>\n<p>\u7cfb\u7edf\u5185\u5f00\u542f\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u4e0d\u65ad\u7684\u4ece\u961f\u5217\u4e2d\u83b7\u53d6\u6d88\u606f\uff0c\u83b7\u53d6\u5230\u4e4b\u540e\u5bf9\u5ef6\u65f6\u6d88\u606f\u8fdb\u884c\u5904\u7406\u3002<code>DelayQueue<\/code>\u7684take\u65b9\u6cd5\u4ece\u961f\u5217\u4e2d\u83b7\u53d6\u5ef6\u65f6\u4efb\u52a1\u5bf9\u8c61\uff0c\u5982\u679c\u961f\u5217\u5143\u7d20\u6570\u91cf\u4e3a0\uff0c\u6216\u8005\u6ca1\u6709\u5230\u8fbe\u201c\u5ef6\u65f6\u65f6\u95f4\u7684\u4efb\u52a1\u201d\uff0c\u8be5\u7ebf\u7a0b\u4f1a\u88ab\u963b\u585e\u3002<\/p>\n<pre><code>@Component\npublic class DelayObjectConsumer  implements InitializingBean {\n\n  @Resource\n  private DelayQueue&lt;OrderDelayObject&gt; orderDelayQueue;\n\n  @Override\n  public void afterPropertiesSet() throws Exception {\n    while (true) {\n      OrderDelayObject task = orderDelayQueue.take();\n      System.out.println(task.toString());\n      System.out.println(task.getOrder());\n      \/\/\u6839\u636eorder\u8ba2\u5355\u4fe1\u606f\uff0c\u53bb\u67e5\u8be2\u8be5\u8ba2\u5355\u7684\u652f\u4ed8\u4fe1\u606f\n      \/\/\u5982\u679c\u7528\u6237\u6ca1\u6709\u8fdb\u884c\u652f\u4ed8\uff0c\u5c06\u8ba2\u5355\u4ece\u6570\u636e\u5e93\u4e2d\u5173\u95ed\n      \/\/\u5982\u679c\u8ba2\u5355\u5e76\u53d1\u91cf\u6bd4\u8f83\u5927\uff0c\u8fd9\u91cc\u53ef\u4ee5\u8003\u8651\u5f02\u6b65\u6216\u7ebf\u7a0b\u6c60\u7684\u65b9\u5f0f\u8fdb\u884c\u5904\u7406\n    }\n  }\n}<\/code><\/pre>\n<p>\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0c\u8fd9\u91cc\u7684while-true\u5faa\u73af\u7684\u5ef6\u65f6\u4efb\u52a1\u5904\u7406\u65f6\u987a\u5e8f\u6267\u884c\u7684\uff0c\u5728\u8ba2\u5355\u5e76\u53d1\u91cf\u6bd4\u8f83\u5927\u7684\u65f6\u5019\uff0c\u9700\u8981\u8003\u8651\u5f02\u6b65\u5904\u7406\u7684\u65b9\u5f0f\u5b8c\u6210\u8ba2\u5355\u7684\u5173\u95ed\u64cd\u4f5c\u3002\u6211\u4e4b\u524d\u5199\u4f5c\u4e00\u4e2aSpringBoot\u7684\u53ef\u89c2\u6d4b\u3001\u6613\u914d\u7f6e\u7684\u7ebf\u7a0b\u6c60\u5f00\u6e90\u9879\u76ee\uff0c\u53ef\u80fd\u4f1a\u5bf9\u4f60\u6709\u5e2e\u52a9\uff0c\u6e90\u4ee3\u7801\u5730\u5740\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=uVoVVmywx9m0HdOpBBdEfA%3D%3D.rzv%2Bva4x%2FPOkZ6%2Be%2BdZIs6h2pZ0aHomzefJUgiyZtqzJ2SaJuQncfrB8TNaXz%2BhzOnF6XGG9H9teYc%2F9nfz17Q%3D%3D\" rel=\"nofollow\">https:\/\/gitee.com\/hanxt\/zimug&#8230;<\/a><br \/>\u7ecf\u8fc7\u6211\u7684\u6d4b\u8bd5\uff0c\u653e\u5165orderDelayQueue\u7684\u5ef6\u65f6\u4efb\u52a1\uff0c\u5728\u534a\u5c0f\u65f6\u4e4b\u540e\u5f97\u5230\u6b63\u786e\u7684\u6267\u884c\u5904\u7406\u3002\u8bf4\u660e\u6211\u4eec\u7684\u5b9e\u73b0\u662f\u6b63\u786e\u7684\u3002<\/p>\n<h2>\u56db\u3001\u4f18\u7f3a\u70b9<\/h2>\n<p>\u4f7f\u7528DelayQueue\u5b9e\u73b0\u5ef6\u65f6\u4efb\u52a1\u975e\u5e38\u7b80\u5355\uff0c\u800c\u4e14\u7b80\u4fbf\uff0c\u5168\u90e8\u90fd\u662f\u6807\u51c6\u7684JDK\u4ee3\u7801\u5b9e\u73b0\uff0c\u4e0d\u7528\u5f15\u5165\u7b2c\u4e09\u65b9\u4f9d\u8d56\uff08\u4e0d\u4f9d\u8d56redis\u5b9e\u73b0\u3001\u6d88\u606f\u961f\u5217\u5b9e\u73b0\u7b49\uff09\uff0c\u975e\u5e38\u7684\u8f7b\u91cf\u7ea7\u3002<\/p>\n<p>\u5b83\u7684\u7f3a\u70b9\u5c31\u662f\u6240\u6709\u7684\u64cd\u4f5c\u90fd\u662f\u57fa\u4e8e\u5e94\u7528\u5185\u5b58\u7684\uff0c\u4e00\u65e6\u51fa\u73b0\u5e94\u7528\u5355\u70b9\u6545\u969c\uff0c\u53ef\u80fd\u4f1a\u9020\u6210\u5ef6\u65f6\u4efb\u52a1\u6570\u636e\u7684\u4e22\u5931\u3002\u5982\u679c\u8ba2\u5355\u5e76\u53d1\u91cf\u975e\u5e38\u5927\uff0c\u56e0\u4e3aDelayQueue\u662f\u65e0\u754c\u7684\uff0c\u8ba2\u5355\u91cf\u8d8a\u5927\uff0c\u961f\u5217\u5185\u7684\u5bf9\u8c61\u5c31\u8d8a\u591a\uff0c\u53ef\u80fd\u9020\u6210OOM\u7684\u98ce\u9669\u3002\u6240\u4ee5\u4f7f\u7528DelayQueue\u5b9e\u73b0\u5ef6\u65f6\u4efb\u52a1\uff0c\u53ea\u9002\u7528\u4e8e\u4efb\u52a1\u91cf\u8f83\u5c0f\u7684\u60c5\u51b5\u3002<br 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[&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006251","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006251","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006251"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006251\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}