{"id":269,"date":"2026-05-19T10:53:03","date_gmt":"2026-05-19T02:53:03","guid":{"rendered":"https:\/\/larkdrop.cafe\/?p=269"},"modified":"2026-05-19T10:53:30","modified_gmt":"2026-05-19T02:53:30","slug":"completablefuture-%e5%bc%82%e6%ad%a5%e7%bc%96%e6%8e%92","status":"publish","type":"post","link":"https:\/\/larkdrop.cafe\/index.php\/2026\/05\/19\/completablefuture-%e5%bc%82%e6%ad%a5%e7%bc%96%e6%8e%92\/","title":{"rendered":"CompletableFuture \u5f02\u6b65\u7f16\u6392"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5b83\u89e3\u51b3\u4e86\u4f20\u7edf&nbsp;<code>Future<\/code>&nbsp;\u7684\u5c40\u9650\u6027\uff0c\u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u3001\u5f3a\u5927\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u4e2aCompletableFuture\u5bf9\u8c61\u4e3b\u8981\u6709\u4e24\u4e2a\u529f\u80fd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8868\u793a\u4e00\u4e2aFuture\u5bf9\u8c61\uff0c\u5373\u53ef\u4ee5\u8868\u793a\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c<\/li>\n\n\n\n<li>\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u5f02\u6b65\u4efb\u52a1\u4e4b\u95f4\u7684\u529f\u80fd\u4f9d\u8d56\uff0c\u5bf9\u591a\u4e2a\u5f02\u6b65\u4efb\u52a1\u4e4b\u95f4\u8fdb\u884c&#8221;\u7ec4\u5408&#8221;\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ec0\u4e48\u662f\u7ec4\u5408\u5462\uff1f\u6bd4\u5982&#8221;\u5f02\u6b65\u4efb\u52a1A\u9700\u8981\u5728\u5f02\u6b65\u4efb\u52a1B\u4e4b\u540e\u6267\u884c\uff0c\u90a3\u4e48\u53ef\u4ee5\u901a\u8fc7CompletableFuture\u5b9e\u73b0\u4efb\u52a1A\u6267\u884c\u5b8c\u6bd5\u540e\uff0c\u81ea\u52a8\u89e6\u53d1\u4efb\u52a1B\u7684\u6267\u884c&#8221;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519161150253.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519161150253.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240519161150253\"\/><\/div><figcaption class=\"wp-element-caption\">image-20240519161150253<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4e0a\u56fe\u6240\u793a\uff0c\u8fd9\u91cc\u63cf\u7ed8\u7684\u662f\u4e00\u4e2a\u4e1a\u52a1\u63a5\u53e3\u7684\u6d41\u7a0b\uff0c\u5176\u4e2d\u5305\u62ecCF1\\CF2\\CF3\\CF4\\CF5\\CF6 \u51716\u4e2a\u6b65\u9aa4\uff0c\u5e76\u63cf\u7ed8\u4e86\u8fd9\u4e9b\u6b65\u9aa4\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u6bcf\u4e2a\u6b65\u9aa4\u53ef\u4ee5\u662f\u4e00\u6b21\u6570\u636e\u5e93\u64cd\u4f5c\u6216\u8005\u662f\u4e00\u6b21\u672c\u5730\u65b9\u6cd5\u8c03\u7528\uff0c\u6216\u8005\u662f\u4e00\u6b21\u670d\u52a1\u95f4\u7684\u8c03\u7528\u7b49\uff0c\u5728\u4f7f\u7528CompletableFuture\u8fdb\u884c\u5f02\u6b65\u5316\u7f16\u7a0b\u65f6\uff0c\u56fe\u4e2d\u7684\u6bcf\u4e2a\u6b65\u9aa4\u90fd\u4f1a\u4ea7\u751f\u4e00\u4e2aCompletableFuture\u5bf9\u8c61\uff0c\u6700\u7ec8\u7ed3\u679c\u4e5f\u4f1a\u7528\u4e00\u4e2aCompletableFuture\u6765\u8fdb\u884c\u8868\u793a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636eCompletableFuture\u4f9d\u8d56\u6570\u91cf\uff0c\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u51e0\u7c7b\uff1a\u96f6\u4f9d\u8d56\u3001\u4e00\u5143\u4f9d\u8d56\u3001\u4e8c\u5143\u4f9d\u8d56\u548c\u591a\u5143\u4f9d\u8d56\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u96f6\u4f9d\u8d56<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u96f6\u4f9d\u8d56\uff0c\u5176\u5b9e\u4e5f\u5c31\u662fCompletableFuture\u5bf9\u8c61\u7684\u521b\u5efa\uff0c\u6211\u4eec\u53ef\u4ee5\u5148\u6765\u770b\u770b\u5982\u4f55\u4e0d\u4f9d\u8d56\u5176\u4ed6\u7684CompletableFuture\u5bf9\u8c61\u6765\u521b\u5efa\u65b0\u7684CompletableFuture\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519161519164.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519161519164.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240519161519164\"\/><\/div><figcaption class=\"wp-element-caption\">image-20240519161519164<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4e0a\u56feCF1\u548cCF2\u7684\u521b\u5efa\uff0c\u5176\u5b9e\u5c31\u662f\u76f4\u63a5\u521b\u5efaCompletableFuture\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"runasync-\u65e0\u8fd4\u56de\u503c\">runAsync-\u65e0\u8fd4\u56de\u503c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u79cd\u65b9\u5f0f\u662f\u83b7\u53d6\u4e00\u4e2a\u8868\u793a\u65e0\u8fd4\u56de\u503c\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u679c\u7684CompletableFuture\u5bf9\u8c61<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u63a5\u53e3<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u83b7\u53d6\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1CompletableFuture\u5bf9\u8c61\n\/\/ \u8fd9\u91cc\u6ca1\u6709\u6307\u5b9a\u7ebf\u7a0b\u6c60\uff0c\u9ed8\u8ba4\u4f1a\u628a\u5f53\u524d\u4efb\u52a1\u4ea4\u7ed9CompletableFuture\u5185\u90e8\u7684\u7ebf\u7a0b\u6c60\u6765\u6267\u884c\nstatic CompletableFuture&lt;Void&gt; runAsync(Runnable runnable)\n\n\/\/ \u5728\u6307\u5b9a\u7684\u7ebf\u7a0b\u6c60\u4e2d\uff0c\u6267\u884c\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\nstatic CompletableFuture&lt;Void&gt; runAsync(Runnable runnable, Executor executor)<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><em>\u533a\u522b<\/em><br>\u7b2c\u4e00\u4e2a\u65b9\u6cd5\u6ca1\u6709\u4f20\u5165\u7ebf\u7a0b\u6c60\uff0c\u90a3\u4e48\u5728\u6267\u884c\u5f02\u6b65\u4efb\u52a1\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u7531<strong>CompletableFuture<\/strong>\u9ed8\u8ba4\u7684\u7ebf\u7a0b\u6c60\uff08<strong>ForkJoinPool<\/strong>\uff09\u6765\u6267\u884c<br>\u7b2c\u4e8c\u4e2a\u65b9\u6cd5\u4f20\u5165\u4e86\u7ebf\u7a0b\u6c60\uff0c\u90a3\u4e48\u6267\u884c\u7684\u65f6\u5019 \u7531\u4f20\u5165\u7684\u7ebf\u7a0b\u6c60\u6765\u6267\u884c\u5f02\u6b65\u4efb\u52a1<br>\u800c\u9ed8\u8ba4\u7684<strong>ForkJoinPool<\/strong>\u4e2d\u7684\u7ebf\u7a0b\u90fd\u662f\u5b88\u62a4\u7ebf\u7a0b\uff08\u5b88\u62a4\u7ebf\u7a0b\u7684\u7279\u70b9\u662f\u4f1a\u968f\u7740\u4e3b\u7ebf\u7a0b\u7684\u505c\u6b62\u800c\u505c\u6b62\uff09\uff0c<strong>ForkJoinPool<\/strong>\u9002\u5408\u4e8e\u628a\u4e00\u4e2a\u5927\u7684\u4efb\u52a1\uff0c\u62c6\u5206\u6210\u82e5\u5e72\u4e2a\u5c0f\u7684\u4efb\u52a1\u6765\u6267\u884c<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f7f\u7528\u6848\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;Void&gt; cf1 = CompletableFuture.runAsync(() -&gt; {\n    try {\n        Thread.sleep(1000);\n    } catch (InterruptedException e) {\n        throw new RuntimeException(e);\n    }\n    System.out.println(\"Run\u96f6\u4f9d\u8d56\u65e0\u53c2\u65e0\u8fd4\u56de\u503c\u7684\u5f02\u6b65\u4efb\u52a1\");\n});\n\nCompletableFuture&lt;Void&gt; cf2 = CompletableFuture.runAsync(() -&gt; System.out.println(\"\u5f02\u6b65\u4efb\u52a12\"));\n\ncf1.join();\ncf2.join();<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CompletableFuture&lt;Void>\uff0c\u6cdb\u578b\u7c7b\u578b\u4e3aVoid\uff0c\u8868\u793a\u5f02\u6b65\u4efb\u52a1\u6ca1\u6709\u6267\u884c\u7ed3\u679c<\/li>\n\n\n\n<li>\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u867d\u7136\u6ca1\u6709\u8fd4\u56de\u503c\uff0c\u4f46\u662f\u4f1a\u6709\u6267\u884c\u72b6\u6001\uff0c\u800c\u8fd9\u4e2a\u6267\u884c\u72b6\u6001\uff0c\u4e5f\u88ab\u5c01\u88c5\u5728CompletableFuture&lt;Void>\u5bf9\u8c61\u4e2d\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u505a\u5982\u4e0b\u64cd\u4f5c<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;Void&gt; future = CompletableFuture.runAsync(() -&gt; {\n    System.out.println(\"\u6267\u884c\u4efb\u52a1\");\n});\n\n\/\/ \u5f02\u6b65\u4efb\u52a1\u662f\u5426\u88ab\u53d6\u6d88\u4e86\nboolean isCancelled = future.isCancelled();\n\/\/ \u662f\u5426\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u4e86\u5f02\u5e38\nboolean isExceptional = future.isCompletedExceptionally();\n\/\/ \u662f\u5426\u6b63\u5e38\u6267\u884c\u5b8c\u6bd5\u4e86\nboolean done = future.isDone();<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"supplyasync-\u6709\u8fd4\u56de\u503c\">supplyAsync-\u6709\u8fd4\u56de\u503c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e8c\u79cd\u65b9\u5f0f\u662f\u83b7\u53d6\u4e00\u4e2a\u8868\u793a\u6709\u8fd4\u56de\u503c\u7684\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u679c\u7684CompletableFuture\u5bf9\u8c61\u3001<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u63a5\u53e3<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n\tSupplier&lt;U&gt; supplier \u63d0\u4f9b\u8005\u63a5\u53e3\uff0c\u4ea7\u751f\u4e00\u4e2a\u7ed3\u679c\n\tCompletableFuture&lt;U&gt; \u8868\u793asupplier\u5728\u5b50\u7ebf\u7a0b\u4e2d\u6267\u884c\u7684\u7ed3\u679c\uff0c\u5305\u542bU\u7c7b\u578b\u7684\u5bf9\u8c61\n*\/\nstatic &lt;U&gt; CompletableFuture&lt;U&gt; supplyAsync(Supplier&lt;U&gt; supplier)\n\n\n\/\/ \u5728\u6307\u5b9a\u7684\u7ebf\u7a0b\u6c60\u4e2d\uff0c\u6267\u884c\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\nstatic &lt;U&gt; CompletableFuture&lt;U&gt; supplyAsync(Supplier&lt;U&gt; supplier, Executor executor)<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface Supplier&lt;T&gt; {\n    T get();\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f7f\u7528\u6848\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;String&gt; cf1 = CompletableFuture.supplyAsync(() -&gt; {\n    String result = \"hello world\";\n    return result;\n});\n\nCompletableFuture&lt;User&gt; cf2 = CompletableFuture.supplyAsync(() -&gt; {\n    User user = User.builder().username(\"\u5f20\u4e09\").gender(\"\u7537\").birthday(new Date()).build();\n    return user;\n});\n\nString cf1Result = cf1.join();\nUser cf2Result = cf2.join();\nSystem.out.println(\"cf1Result = \" + cf1Result);\nSystem.out.println(\"cf2Result = \" + cf2Result);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CompletableFuture&lt;String>, \u6cdb\u578b\u7c7b\u578b\u4e3aString\uff0c\u8868\u793a\u5f02\u6b65\u4efb\u52a1\u6700\u7ec8\u8fd4\u56de\u7684\u7ed3\u679c\u662f\u4e00\u4e2aString\u5bf9\u8c61<\/li>\n\n\n\n<li>CompletableFuture&lt;String>\u4e2d\u9664\u4e86\u5c01\u88c5\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7684\u72b6\u6001\uff0c\u8fd8\u5c01\u88c5\u4e86\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c\uff0c\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u65b9\u5f0f\u83b7\u53d6<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ CompletableFuture\u7684\u6cdb\u578b\u662f\u4ec0\u4e48\u7c7b\u578b\uff0cget\u65b9\u6cd5\u83b7\u53d6\u7684\u5c31\u662f\u4ec0\u4e48\u7c7b\u578b\u7684\u503c\uff0c\u82e5\u4e3aVoid\uff0c\u5219get\u7684\u7ed3\u679c\u662fnull\nString result = completableFuture.get();<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5173\u4e8eCompletableFuture.get()\u65b9\u6cd5\uff0c\u662f\u4e00\u4e2a\u963b\u585e\u65b9\u6cd5\uff0c\u4f1a\u963b\u585e\u8c03\u7528\u7ebf\u7a0b\uff0c\u76f4\u5230CompletableFuture\u5bf9\u8c61\u6240\u4ee3\u8868\u7684\u7684\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u675f\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u5143\u4f9d\u8d56<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519162415395.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519162415395.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240519162415395\"\/><\/div><figcaption class=\"wp-element-caption\">image-20240519162415395<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4e0a\u56fe\u6240\u793a\uff0cCF3\u548cCF5\u90fd\u9700\u8981\u4f9d\u8d56\u4e8e\u524d\u4e00\u4e2aCompletableFuture\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"thenrun-thenrunasync\">thenRun &amp; thenRunAsync<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u63a5\u53e3<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ thenRun\u65b9\u6cd5\uff1a\u5728\u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u7ed3\u675f\u540e\uff0c\u89e6\u53d1\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\uff08thenRun\u65b9\u6cd5\u4f20\u9012\u7684\u53c2\u6570\uff09\u65e0\u53c2\u4e14\u6ca1\u6709\u8fd4\u56de\u503c\u7684\u5f02\u6b65\u4efb\u52a1\nCompletableFuture&lt;Void&gt; thenRun(Runnable action)\n\n\/\/\u5f3a\u5236\u5207\u6362\u7ebf\u7a0b\uff0c\u5982\u679c\u540e\u7eed\u64cd\u4f5c\u975e\u5e38\u8f7b\u91cf\uff0c\u4f7f\u7528 thenRunAsync \u7684\u7ebf\u7a0b\u5207\u6362\u5f00\u9500\u53ef\u80fd\u9ad8\u4e8e\u64cd\u4f5c\u672c\u8eab\u3002\n\/\/ thenRunAync\u65b9\u6cd5\uff1a\u65b9\u6cd5\u53c2\u6570\u548c\u6267\u884c\u7ed3\u679c\u540cthenRun\uff0c\u533a\u522b\u662fthenRunAsync\u65b9\u6cd5\u4f20\u9012\u7684\u5f02\u6b65\u4efb\u52a1\u6240\u6267\u884c\u7684\u7ebf\u7a0b\u662f\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b.\n\/\/ thenRunAsync\u65b9\u6cd5\u8fd8\u6709\u4e00\u4e2a\u91cd\u8f7d\u65b9\u6cd5\uff0cexecutor\u6307\u5b9a\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u6240\u4f7f\u7528\u7684\u7ebf\u7a0b\u6c60\nCompletableFuture&lt;Void&gt; thenRunAsync(Runnable action, Executor executor)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f7f\u7528\u6848\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;Void&gt; cf1 = CompletableFuture.runAsync(() -&gt; {\n    System.out.println(\"hello world\");\n});\n\nCompletableFuture&lt;Void&gt; cf2 = cf1.thenRun(() -&gt; {\n    System.out.println(\"\u65e0\u53c2\u65e0\u8fd4\u56de\u503c\u7684\u4e00\u5143\u4f9d\u8d56\u5f02\u6b65\u4efb\u52a1\");\n});\n\ncf2.join();<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u94fe\u5f0f\u8c03\u7528\u7684\u65b9\u5f0f\uff0c\u91cd\u65b0\u4e66\u5199\u4ee5\u4e0a\u7684\u4ee3\u7801(\u6548\u679c\u7b49\u6548)\uff0c\u5b9e\u9645\u5f00\u53d1\u4e2d\u6211\u4eec\u901a\u5e38\u4e60\u60ef\u4f7f\u7528\u94fe\u5f0f\u8c03\u7528\u65b9\u5f0f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture.runAsync(() -&gt; {\n    System.out.println(\"hello world\");\n}).thenRun(() -&gt; {\n    System.out.println(\"\u65e0\u53c2\u65e0\u8fd4\u56de\u503c\u7684\u4e00\u5143\u4f9d\u8d56\u5f02\u6b65\u4efb\u52a1\");\n}).join();<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"thenaccept-thenacceptasync\">thenAccept &amp; thenAcceptAsync<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u63a5\u53e3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">thenAccept\u65b9\u6cd5: \u5728\u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u675f\u540e\uff0c\u89e6\u53d1\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\uff0c\u4e14\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\uff0c\u63a5\u6536\u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u7684\u7ed3\u679c\u4f5c\u4e3a\u53c2\u6570\u6267\u884c\uff0c\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u65e0\u8fd4\u56de\u503c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n\t\u53c2\u6570\uff1a\n\t action\u7684accept\u65b9\u6cd5\u7684\u53c2\u6570\u8868\u793a\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u6240\u63a5\u53d7\u7684\u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7684\u7ed3\u679c\n\t\u8fd4\u56de\u503c:\n\t CompletableFuture&lt;Void&gt;\u8868\u793a\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c\u65e0\u8fd4\u56de\u503c\n*\/\nCompletableFuture&lt;Void&gt; thenAccept(Consumer&lt;? super T&gt; action)\n\n\/\/ thenAcceptAsync\u65b9\u6cd5: \u65b9\u6cd5\u53c2\u6570\u548c\u6267\u884c\u7ed3\u679c\u540cthenAccept\uff0c\u533a\u522b\u662fthenAcceptAsync\u65b9\u6cd5\u4f20\u9012\u7684\u5f02\u6b65\u4efb\u52a1\u6240\u6267\u884c\u7684\u7ebf\u7a0b\u662f\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\nCompletableFuture&lt;Void&gt; thenAcceptAsync(Consumer&lt;? super T&gt; action)\n\n\/\/ thenAcceptAsync\u8fd8\u6709\u4e00\u4e2a\u91cd\u8f7d\u65b9\u6cd5\uff0cexecutor\u6307\u5b9a\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u6240\u4f7f\u7528\u7684\u7ebf\u7a0b\u6c60\nCompletableFuture&lt;Void&gt; thenAcceptAsync(Consumer&lt;? super T&gt; action, Executor executor)<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface Consumer&lt;T&gt; {\n\n    void accept(T t);\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;String&gt; cf1 = CompletableFuture.supplyAsync(() -&gt; \"hello \");\nCompletableFuture&lt;Void&gt; cf2 = cf1.thenAccept((cf1Result) -&gt; {\n    System.out.println(cf1Result + \"world\");\n});\n\ncf2.join();<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"thenapply-thenapplyasync\">thenApply &amp; thenApplyAsync<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u63a5\u53e3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">thenApply\u65b9\u6cd5: \u5728\u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u675f\u540e\uff0c\u89e6\u53d1\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\uff0c\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u63a5\u6536\u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u7684\u7ed3\u679c\u4f5c\u4e3a\u53c2\u6570\uff0c\u4e14\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u6709\u81ea\u5df1\u7684\u8fd4\u56de\u503c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">thenApplyAsync\u65b9\u6cd5\uff1a\u65b9\u6cd5\u53c2\u6570\u548c\u6267\u884c\u7ed3\u679c\u540cthenApply\uff0c\u533a\u522b\u662fthenApplyAsync\u65b9\u6cd5\u4f20\u9012\u7684\u5f02\u6b65\u4efb\u52a1\u6240\u6267\u884c\u7684\u7ebf\u7a0b\u662f\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n\t\u53c2\u6570\uff1a\n\t Function\u7684apply\u65b9\u6cd5\u7b2c\u4e00\u4e2a\u53c2\u6570\u8868\u793a\u63a5\u6536\u7684\u5f53\u524d\u5f02\u6b65\u7684\u7ed3\u679c\n\t Function\u7684apply\u65b9\u6cd5\u8fd4\u56de\u503c\u8868\u793a\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u7ed3\u679c\n\t\u8fd4\u56de\u503c:\n\t CompletableFuture&lt;U&gt;\u8868\u793a\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c\u5305\u542b\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u8fd4\u56de\u503c\n*\/\n&lt;U&gt; CompletableFuture&lt;U&gt; thenApply(Function&lt;? super T,? extends U&gt; fn)\n\n\/\/ \u628a\u5f02\u6b65\u4efb\u52a1\u4ea4\u7ed9\u9ed8\u8ba4\u7684\u7ebf\u7a0b\u6c60\u6765\u6267\u884c\n&lt;U&gt; CompletableFuture&lt;U&gt; thenApplyAsync(Function&lt;? super T,? extends U&gt; fn)\n\n\/\/ \u628a\u5f02\u6b65\u4efb\u52a1\u4ea4\u7ed9\u6307\u5b9a\u7684\u7ebf\u7a0b\u6c60\u6765\u6267\u884c\nCompletableFuture&lt;U&gt; thenApplyAsync(Function&lt;? super T,? extends U&gt; fn, Executor executor)<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface Function&lt;T, R&gt; {\n    \/\/ \u5c06\u4e00\u4e2a\u53c2\u6570\u503c\u8f6c\u5316\u4e3a\u53e6\u4e00\u4e2a\u7c7b\u578b\u7684\u503c\u5e76\u8fd4\u56de\n    R apply(T t);\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f7f\u7528\u6848\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture\n    .supplyAsync(() -&gt; \"\u5f20\u4e09\")\n    .thenApply(name -&gt; {\n        User user = User.builder().username(name).gender(\"\u7537\").birthday(new Date()).build();\n        return user;\n    }).thenAccept(user -&gt; {\n        user.setGender(\"\u5973\");\n        System.out.println(user);\n    }).join();<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u5143\u4f9d\u8d56<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519201159136.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519201159136.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240519201159136\"\/><\/div><figcaption class=\"wp-element-caption\">image-20240519201159136<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4e0a\u56fe\u7ea2\u8272\u94fe\u8def\u6240\u793a\uff0cCF4\u540c\u65f6\u4f9d\u8d56\u4e8e\u4e24\u4e2aCF1\u548cCF2\uff0c\u8fd9\u79cd\u4e8c\u5143\u4f9d\u8d56\u53ef\u4ee5\u901a\u8fc7thenCombine\u7b49\u65b9\u6cd5\u6765\u5b9e\u73b0\uff0c\u5982\u4e0b\u4ee3\u7801\u6240\u793a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"thencombine-thencombineasync\">thenCombine &amp; thenCombineAsync<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u63a5\u53e3<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n\t\u53c2\u6570\uff1a\n\t other: \u5f85\u5408\u5e76\u7684\u53e6\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\n\t T: \u7b2c\u4e00\u4e2a\u4efb\u52a1\u7684\u8fd4\u56de\u7ed3\u679c\n\t U: \u7b2c\u4e8c\u4e2a\u4efb\u52a1\u7684\u8fd4\u56de\u7ed3\u679c\n\t fn: \u7ec4\u5408\u4e4b\u540e\u7684\u8fd4\u56de\u7c7b\u578b\n\t\u8fd4\u56de\u503c:\n\t CompletableFuture&lt;U&gt;\u8868\u793a\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c\u5305\u542b\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u8fd4\u56de\u503c\n*\/\npublic &lt;U,V&gt; CompletableFuture&lt;V&gt; thenCombine( CompletionStage&lt;? extends U&gt; other, BiFunction&lt;? super T,? super U,? extends V&gt; fn);\n\npublic &lt;U,V&gt; CompletableFuture&lt;V&gt; thenCombineAsync( CompletionStage&lt;? extends U&gt; other, BiFunction&lt;? super T,? super U,? extends V&gt; fn)\n\npublic &lt;U,V&gt; CompletableFuture&lt;V&gt; thenCombineAsync( CompletionStage&lt;? extends U&gt; other, BiFunction&lt;? super T,? super U,? extends V&gt; fn, Executor executor)<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>@FunctionalInterface\npublic interface BiFunction&lt;T, U, R&gt; {\n\t\/\/ T \u7b2c\u4e00\u4e2a\u4efb\u52a1\u7684\u8fd4\u56de\u7ed3\u679c\n\t\/\/ U \u7b2c\u4e8c\u4e2a\u4efb\u52a1\u7684\u8fd4\u56de\u7ed3\u679c\n\t\/\/ R \u7ec4\u5408\u4e4b\u540e\u7684\u8fd4\u56de\u7c7b\u578b\n\tR apply(T t, U u);\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f7f\u7528<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;String&gt; cf1 = CompletableFuture.supplyAsync(() -&gt; \"\u674e\u56db\");\nCompletableFuture&lt;String&gt; cf2 = CompletableFuture.supplyAsync(() -&gt; \"\u7537\");\n\nCompletableFuture&lt;User&gt; cf3 = cf1.thenCombine(cf2, (v1, v2) -&gt; {\n    User user = User.builder()\n            .username(v1)\n            .gender(v2)\n            .build();\n    return user;\n});\n\nCompletableFuture&lt;User&gt; cf4 = cf3.thenApply(user -&gt; {\n    user.setBirthday(new Date());\n    return user;\n});\n\nUser user = cf4.join();\nSystem.out.println(\"user = \" + user);<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u591a\u5143\u4f9d\u8d56<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519202449036.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20240519202449036.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240519202449036\"\/><\/div><figcaption class=\"wp-element-caption\">image-20240519202449036<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4e0a\u56fe\u7ea2\u8272\u94fe\u8def\u6240\u793a\uff0c\u6574\u4e2a\u6d41\u7a0b\u7684\u7ed3\u675f\u4f9d\u8d56\u4e8e\u4e09\u4e2a\u6b65\u9aa4CF3\u3001CF4\u3001CF5\uff0c\u8fd9\u79cd\u591a\u5143\u4f9d\u8d56\u53ef\u4ee5\u901a\u8fc7<code>allOf<\/code>\u6216<code>anyOf<\/code>\u65b9\u6cd5\u6765\u5b9e\u73b0\uff0c\u533a\u522b\u662f\u5f53\u9700\u8981\u591a\u4e2a\u4f9d\u8d56\u5168\u90e8\u5b8c\u6210\u65f6\u4f7f\u7528<code>allOf<\/code>\uff0c\u5f53\u591a\u4e2a\u4f9d\u8d56\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u5b8c\u6210\u5373\u53ef\u65f6\u4f7f\u7528<code>anyOf<\/code>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"allof\">allOf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">allOf\u65b9\u6cd5: \u53ef\u4ee5\u5c06\u591a\u4e2a\u5f02\u6b65\u4efb\u52a1\u5408\u5e76\u4e3a\u4e00\u4e2a\u65b0\u7684\u5f02\u6b65\u4efb\u52a1\uff0c\u5f53\u4e14\u4ec5\u5f53\u6240\u6709\u7684\u5f02\u6b65\u4efb\u52a1\u90fd\u6267\u884c\u5b8c\uff0c\u65b0\u7684\u5f02\u6b65\u4efb\u52a1\u624d\u7b97\u6267\u884c\u5b8c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n   \u53c2\u6570\u8868\u793a\u5f85\u5408\u5e76\u7684\u591a\u4e2a\u5f02\u6b65\u4efb\u52a1\n   \u8fd4\u56de\u503c\u4e3aCompletableFuture&lt;Void&gt;\u7c7b\u578b\uff0c\u8bf4\u660e\u5408\u5e76\u4e4b\u540e\u7684\u5f02\u6b65\u4efb\u52a1\u4e0d\u5305\u542b\u4efb\u4f55\u8fd4\u56de\u503c\n*\/\nCompletableFuture&lt;Void&gt; allOf(CompletableFuture&lt;?&gt;... cfs)<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;Void&gt; cf1 = CompletableFuture.runAsync(() -&gt; {\n    sleep(3000);\n    System.out.println(\"\u5f02\u6b65\u4efb\u52a11\u5b8c\u6210\");\n});\nCompletableFuture&lt;Void&gt; cf2 = CompletableFuture.runAsync(() -&gt; {\n    sleep(1000);\n    System.out.println(\"\u5f02\u6b65\u4efb\u52a12\u5b8c\u6210\");\n});\nCompletableFuture&lt;Void&gt; cf3 = CompletableFuture.runAsync(() -&gt; {\n    sleep(5000);\n    System.out.println(\"\u5f02\u6b65\u4efb\u52a13\u5b8c\u6210\");\n});\nCompletableFuture&lt;Void&gt; cf4 = CompletableFuture.runAsync(() -&gt; {\n    sleep(2000);\n    System.out.println(\"\u5f02\u6b65\u4efb\u52a14\u5b8c\u6210\");\n});\n\nCompletableFuture&lt;Void&gt; cfAll = CompletableFuture.allOf(cf1, cf2, cf3, cf4);\ncfAll.join();\nSystem.out.println(\"\u6267\u884c\u5b8c\u6210\");\n\nprivate static void sleep(long time) {\n    try {\n        Thread.sleep(time);\n    } catch (InterruptedException e) {\n        throw new RuntimeException(e);\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"anyof-\u4e86\u89e3\">anyOf \uff08\u4e86\u89e3\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">allOf\u65b9\u6cd5: \u53ef\u4ee5\u5c06\u591a\u4e2a\u5f02\u6b65\u4efb\u52a1\u5408\u5e76\u4e3a\u4e00\u4e2a\u65b0\u7684\u5f02\u6b65\u4efb\u52a1\uff0c\u5176\u4e2d\u53ea\u8981\u6709\u4e00\u4e2a\u4efb\u52a1\u6267\u884c\u5b8c\uff0c\u65b0\u7684\u5f02\u6b65\u4efb\u52a1\u5c31\u7b97\u6267\u884c\u5b8c\uff0c\u4e14\u4f1a\u5c06\u8be5\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c\uff0c\u4f5c\u4e3a\u65b0\u7684\u5f02\u6b65\u4efb\u52a1\u7684\u7ed3\u679c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n   \u53c2\u6570\u8868\u793a\u5f85\u5408\u5e76\u7684\u591a\u4e2a\u5f02\u6b65\u4efb\u52a1\n   \u8fd4\u56de\u503c\u4e3aCompletableFuture&lt;Object&gt; \u5408\u5e76\u4e4b\u540e\u7684\u5f02\u6b65\u4efb\u52a1\u7684\u7ed3\u679c\uff0c\u540c\u5148\u6267\u884c\u5b8c\u7684\u90a3\u4e2a\u5f02\u6b65\u4efb\u52a1\u7684\u7ed3\u679c\n*\/\nCompletableFuture&lt;Object&gt; anyOf(CompletableFuture&lt;?&gt;... cfs)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff1a\u5982\u679c\u8fd9\u4e9b\u5f85\u5408\u5e76\u7684\u5f02\u6b65\u4efb\u52a1\u4e2d\uff0c\u540c\u65f6\u6709\u591a\u4e2a\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\uff0c\u90a3\u4e48\u5408\u5e76\u4e4b\u540e\u7684\u65b0\u7684\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c\u5c31\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u5177\u6709\u5f88\u5927\u7684\u4e0d\u786e\u5b9a\u6027\uff0c\u6240\u4ee5\u5b9e\u9645\u5f00\u53d1\u4e2d\u5f88\u5c11\u7528\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;Void&gt; cf1 = CompletableFuture.runAsync(() -&gt; {\n    sleep(3000);\n    System.out.println(\"\u5f02\u6b65\u4efb\u52a11\u5b8c\u6210\");\n});\nCompletableFuture&lt;Void&gt; cf2 = CompletableFuture.runAsync(() -&gt; {\n    sleep(1000);\n    System.out.println(\"\u5f02\u6b65\u4efb\u52a12\u5b8c\u6210\");\n});\nCompletableFuture&lt;Void&gt; cf3 = CompletableFuture.runAsync(() -&gt; {\n    sleep(5000);\n    System.out.println(\"\u5f02\u6b65\u4efb\u52a13\u5b8c\u6210\");\n});\nCompletableFuture&lt;Void&gt; cf4 = CompletableFuture.runAsync(() -&gt; {\n    sleep(2000);\n    System.out.println(\"\u5f02\u6b65\u4efb\u52a14\u5b8c\u6210\");\n});\n\nCompletableFuture&lt;Object&gt; anyOfCf = CompletableFuture.anyOf(cf1, cf2, cf3, cf4);\nanyOfCf.join();\nSystem.out.println(\"\u6267\u884c\u5b8c\u6210\");\n\nprivate static void sleep(long time) {\n    try {\n        Thread.sleep(time);\n    } catch (InterruptedException e) {\n        throw new RuntimeException(e);\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5f02\u5e38\u5904\u7406<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">CompletableFuture\u8fd8\u7ed9\u6211\u4eec\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4e13\u95e8\u7528\u6765\u5904\u7406\u5f02\u5e38\u7684\u65b9\u6cd5\uff1aexceptionally<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n\t\u6ce8\u610f\uff0c\u8be5\u65b9\u6cd5\u5f53\u4e14\u4ec5\u5f53 \u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u51fa\u73b0\u5f02\u5e38\u7684\u65f6\u5019\u624d\u4f1a\u6267\u884c\n\t\u4f5c\u7528:\n\t  \u901a\u8fc7\u6267\u884cfn\uff0c\u5c06\u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u7684\u5f02\u5e38\u8f6c\u5316\u4e3a\u67d0\u4e00\u4e2a\u9ed8\u8ba4\u503c\u8fd4\u56de\n\t\u8fd4\u56de\u503c\uff1a\u5f02\u5e38\u5904\u7406\u7684\u7ed3\u679c\uff0c\u5373\u5f53\u53d1\u751f\u5f02\u5e38\u65f6\u6240\u8fd4\u56de\u7684\u9ed8\u8ba4\u503c\uff0c\u9ed8\u8ba4\u503c\u7684\u6570\u636e\u7c7b\u578b\u540c\u5f53\u524d\u5f02\u6b65\u4efb\u52a1\u7684\u8fd4\u56de\u503c\u7c7b\u578b\n*\/\nCompletableFuture&lt;T&gt; exceptionally(Function&lt;Throwable, ? extends T&gt; fn)<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>CompletableFuture&lt;int&#91;]&gt; exceptionally = CompletableFuture.supplyAsync(() -&gt; {\n    int&#91;] a = null;\n    System.out.println(a&#91;3]);\n    return a;\n})\n.exceptionally(e -&gt; new int&#91;0]);\n\nint&#91;] ints = exceptionally.get();\nSystem.out.println(ints.length);<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5c0f\u7ed3<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20250513115104402.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/118.25.99.91\/courses\/markdown\/image\/19-CompletableFuture-optimized\/image-20250513115104402.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20250513115104402\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b83\u89e3\u51b3\u4e86\u4f20\u7edf&nbsp;Future&nbsp;\u7684\u5c40\u9650\u6027\uff0c\u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u3001\u5f3a\u5927\u7684\u529f\u80fd\u3002 \u4e00\u4e2aCompletabl [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[5],"class_list":["post-269","post","type-post","status-publish","format-standard","hentry","category-learn","tag-5"],"_links":{"self":[{"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/posts\/269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/comments?post=269"}],"version-history":[{"count":1,"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/posts\/269\/revisions"}],"predecessor-version":[{"id":270,"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/posts\/269\/revisions\/270"}],"wp:attachment":[{"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/media?parent=269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/categories?post=269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/larkdrop.cafe\/index.php\/wp-json\/wp\/v2\/tags?post=269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}