{"id":202653,"date":"2025-05-22T08:18:48","date_gmt":"2025-05-22T00:18:48","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202653\/"},"modified":"2025-05-22T08:18:48","modified_gmt":"2025-05-22T00:18:48","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-java-%e5%87%bd%e6%95%b0%e5%ae%9e%e7%8e%b0%e5%bc%82%e6%ad%a5%e5%a4%84%e7%90%86%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202653\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 Java \u51fd\u6570\u5b9e\u73b0\u5f02\u6b65\u5904\u7406\uff1f"},"content":{"rendered":"

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

\u5982\u4f55\u4f7f\u7528 Java \u51fd\u6570\u5b9e\u73b0\u5f02\u6b65\u5904\u7406\uff1f<\/h1>\n

IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u5982\u4f55\u4f7f\u7528 Java \u51fd\u6570\u5b9e\u73b0\u5f02\u6b65\u5904\u7406\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

Java \u51fd\u6570\u4e2d\u7684\u5f02\u6b65\u5904\u7406\u5141\u8bb8\u5728\u540e\u53f0\u6267\u884c\u8017\u65f6\u7684\u4efb\u52a1\uff0c\u800c\u4e0d\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002\u5f02\u6b65\u51fd\u6570\u4f7f\u7528 CompletableFuture \u7c7b\u8868\u793a\u5f02\u6b65\u64cd\u4f5c\u7684\u7ed3\u679c\uff0c\u5e76\u63d0\u4f9b\u591a\u79cd\u65b9\u6cd5\u6765\u5904\u7406\u548c\u5408\u5e76\u7ed3\u679c\u3002\u901a\u8fc7\u4f7f\u7528 CompletableFuture.supplyAsync() \u65b9\u6cd5\u521b\u5efa\u5f02\u6b65\u51fd\u6570\uff0c\u5e76\u4f7f\u7528 thenAccept() \u65b9\u6cd5\u5728\u7ed3\u679c\u53ef\u7528\u65f6\u6267\u884c\u64cd\u4f5c\u3002\u5b9e\u6218\u6848\u4f8b\u663e\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u5f02\u6b65\u5904\u7406\u8fdb\u884c\u5e76\u884c\u56fe\u50cf\u8c03\u6574\u5927\u5c0f\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u4f7f\u7528 Java \u51fd\u6570\u5b9e\u73b0\u5f02\u6b65\u5904\u7406<\/strong><\/p>\n

\u5f02\u6b65\u5904\u7406\u662f\u4e00\u79cd\u5e76\u884c\u7f16\u7a0b\u6280\u672f\uff0c\u5b83\u5141\u8bb8\u5728\u540e\u53f0\u6267\u884c\u8017\u65f6\u7684\u4efb\u52a1\uff0c\u800c\u4e0d\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002\u5bf9\u4e8e\u5904\u7406\u9700\u8981\u5927\u91cf\u8ba1\u7b97\u6216 I\/O \u64cd\u4f5c\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u5f02\u6b65\u5904\u7406\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u51fd\u6570\u5b9e\u73b0\u5f02\u6b65\u5904\u7406\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5b9e\u6218\u6848\u4f8b\u3002<\/p>\n

Java \u51fd\u6570<\/strong><\/p>\n

\u51fd\u6570\u662f Java 8 \u4e2d\u5f15\u5165\u7684\u4e00\u4e2a\u7279\u6027\uff0c\u5b83\u5141\u8bb8\u5c06\u4ee3\u7801\u5757\u5c01\u88c5\u6210\u4e00\u4e2a\u53ef\u91cd\u7528\u5355\u5143\u3002\u51fd\u6570\u53ef\u4ee5\u4ee5\u540c\u6b65\u6216\u5f02\u6b65\u7684\u65b9\u5f0f\u6267\u884c\u3002\u540c\u6b65\u51fd\u6570\u5728\u8c03\u7528\u65f6\u7acb\u5373\u6267\u884c\uff0c\u800c\u5f02\u6b65\u51fd\u6570\u4f7f\u7528\u7ebf\u7a0b\u6c60\u5728\u540e\u53f0\u6267\u884c\u3002<\/p>\n

\u521b\u5efa\u5f02\u6b65\u51fd\u6570<\/strong><\/p>\n

\u8981\u521b\u5efa\u5f02\u6b65\u51fd\u6570\uff0c\u8bf7\u4f7f\u7528 CompletableFuture<\/code> \u7c7b\u3002CompletableFuture<\/code> \u8868\u793a\u4e00\u4e2a\u5f02\u6b65\u64cd\u4f5c\u7684\u7ed3\u679c\u3002\u5b83\u63d0\u4f9b\u5404\u79cd\u65b9\u6cd5\u6765\u5904\u7406\u548c\u5408\u5e76\u6765\u81ea\u591a\u4e2a\u5f02\u6b65\u64cd\u4f5c\u7684\u7ed3\u679c\u3002<\/p>\n

import java.util.concurrent.CompletableFuture;\n\npublic class AsyncFunction {\n\n    public static CompletableFuture<Integer> asyncFunction(int number) {\n        return CompletableFuture.supplyAsync(() -> {\n            \/\/ \u6267\u884c\u8017\u65f6\u7684\u64cd\u4f5c\n            return number * number;\n        });\n    }\n\n    \/\/ ...\n}<\/pre>\n
\u4f7f\u7528\u5f02\u6b65\u51fd\u6570<\/strong><\/p>\n
\u4f7f\u7528\u5f02\u6b65\u51fd\u6570\u4e0e\u4f7f\u7528\u666e\u901a\u540c\u6b65\u51fd\u6570\u7c7b\u4f3c\u3002\u5173\u952e\u7684\u533a\u522b\u5728\u4e8e\uff0c\u5f02\u6b65\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a CompletableFuture<\/code>\uff0c\u800c\u4e0d\u662f\u5373\u65f6\u7ed3\u679c\u3002<\/p>\n
public static void main(String[] args) {\n    CompletableFuture<Integer> future = AsyncFunction.asyncFunction(10);\n\n    \/\/ \u5728\u540e\u53f0\u6267\u884c\u5f02\u6b65\u8ba1\u7b97\uff0c\u4e0d\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\n    future.thenAccept(result -> {\n        \/\/ \u5f53\u7ed3\u679c\u53ef\u7528\u65f6\uff0c\u6267\u884c\u6b64\u64cd\u4f5c\n        System.out.println(\"Result: \" + result);\n    });\n\n    \/\/ \u7ee7\u7eed\u6267\u884c\u4e3b\u7ebf\u7a0b\u4e2d\u7684\u5176\u4ed6\u4efb\u52a1\n    \/\/ ...\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b\uff1a\u5f02\u6b65\u56fe\u50cf\u5904\u7406<\/strong><\/p>\n
\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u5904\u7406\u5927\u91cf\u56fe\u50cf\u3002\u4e3a\u4e86\u4f18\u5316\u6027\u80fd\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u5f02\u6b65\u5904\u7406\u6765\u5e76\u884c\u5904\u7406\u56fe\u50cf\u3002<\/p>\n
import java.awt.image.BufferedImage;\nimport java.util.concurrent.CompletableFuture;\n\npublic class ImageProcessor {\n\n    public static CompletableFuture<BufferedImage> resizeImage(BufferedImage image, int newWidth, int newHeight) {\n        return CompletableFuture.supplyAsync(() -> {\n            \/\/ \u6267\u884c\u8017\u65f6\u7684\u56fe\u50cf\u8c03\u6574\u5927\u5c0f\u64cd\u4f5c\n            return resize(image, newWidth, newHeight);\n        });\n    }\n\n    \/\/ ...\n\n}<\/pre>\n
public static void main(String[] args) {\n    List<BufferedImage> images = ...;\n\n    \/\/ \u521b\u5efa\u4e00\u4e2a CompletableFuture \u5217\u8868\uff0c\u8868\u793a\u6240\u6709\u5f02\u6b65\u56fe\u50cf\u8c03\u6574\u5927\u5c0f\u64cd\u4f5c\n    List<CompletableFuture<BufferedImage>> futures = new ArrayList<>();\n    for (BufferedImage image : images) {\n        futures.add(ImageProcessor.resizeImage(image, 100, 100));\n    }\n\n    \/\/ \u4f7f\u7528 CompletableFuture.allOf() \u7b49\u5f85\u6240\u6709\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\n    CompletableFuture<Void> allFutures = CompletableFuture.allOf(futures.toArray(new CompletableFuture[0]));\n\n    \/\/ \u5728\u6240\u6709\u56fe\u50cf\u8c03\u6574\u5927\u5c0f\u64cd\u4f5c\u5b8c\u6210\u540e\u6267\u884c\u6b64\u64cd\u4f5c\n    allFutures.thenAccept(result -> {\n        \/\/ \u6240\u6709\u56fe\u50cf\u8c03\u6574\u5927\u5c0f\u64cd\u4f5c\u5df2\u5b8c\u6210\n        \/\/ ...\n    });\n\n}<\/pre>\n
\u901a\u8fc7\u4f7f\u7528 Java \u51fd\u6570\u4e2d\u7684\u5f02\u6b65\u5904\u7406\uff0c\u6211\u4eec\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u56fe\u50cf\u5904\u7406\u7b49\u8017\u65f6\u4efb\u52a1\u7684\u6027\u80fd\uff0c\u4ece\u800c\u521b\u5efa\u66f4\u54cd\u5e94\u548c\u6709\u6548\u7387\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n
\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5982\u4f55\u4f7f\u7528 Java \u51fd\u6570\u5b9e\u73b0\u5f02\u6b65\u5904\u7406\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u4f7f\u7528 Java \u51fd\u6570\u5b9e\u73b0\u5f02\u6b65...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202653","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202653","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202653"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202653\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}