{"id":202869,"date":"2025-05-22T11:57:06","date_gmt":"2025-05-22T03:57:06","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202869\/"},"modified":"2025-05-22T11:57:06","modified_gmt":"2025-05-22T03:57:06","slug":"%e5%bc%82%e6%ad%a5java%e5%87%bd%e6%95%b0%e7%9a%84%e5%8f%82%e6%95%b0%e5%92%8c%e8%bf%94%e5%9b%9e%e5%80%bc%e7%b1%bb%e5%9e%8b%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202869\/","title":{"rendered":"\u5f02\u6b65Java\u51fd\u6570\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7c7b\u578b\u5982\u4f55\u5904\u7406"},"content":{"rendered":"

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

\u5f02\u6b65Java\u51fd\u6570\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7c7b\u578b\u5982\u4f55\u5904\u7406<\/h1>\n

\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300a\u5f02\u6b65Java\u51fd\u6570\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7c7b\u578b\u5982\u4f55\u5904\u7406\u300b<\/span>\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3<\/span>\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

\u5f02\u6b65 Java \u51fd\u6570\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7c7b\u578b\u4e0d\u540c\u4e8e\u540c\u6b65\u51fd\u6570\u3002\u53c2\u6570\u5fc5\u987b\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u4f20\u9012\u65b9\u5f0f\u4e0e\u540c\u6b65\u51fd\u6570\u7c7b\u4f3c\u3002\u5f02\u6b65\u51fd\u6570\u7684\u8fd4\u56de\u503c\u7c7b\u578b\u662f\u4e00\u4e2a CompletableFuture \u5bf9\u8c61\uff0c\u8868\u793a\u6f5c\u5728\u7684\u672a\u6765\u7ed3\u679c\uff0c\u53ef\u4ee5\u5305\u542b\u6267\u884c\u5b8c\u6210\u540e\u7684\u7ed3\u679c\u6216\u5f02\u5e38\u4fe1\u606f\u3002\u5728\u5b9e\u6218\u6848\u4f8b\u4e2d\uff0c\u5f02\u6b65\u51fd\u6570\u53ef\u7528\u4e8e\u5e76\u884c\u5904\u7406\u56fe\u50cf\u5217\u8868\uff0c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n

<\/p>\n

\u5f02\u6b65 Java \u51fd\u6570\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7c7b\u578b<\/strong><\/p>\n

\u5728\u5f02\u6b65 Java \u51fd\u6570\u4e2d\uff0c\u5904\u7406\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7c7b\u578b\u4e0e\u540c\u6b65\u51fd\u6570\u4e0d\u540c\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u5982\u4f55\u4f7f\u7528 CompletableFuture \u6765\u8868\u793a\u5f02\u6b65\u51fd\u6570\u7684\u8fd4\u56de\u503c\uff0c\u4ee5\u53ca\u5982\u4f55\u5c06\u53c2\u6570\u4f20\u9012\u7ed9\u5f02\u6b65\u51fd\u6570\u3002<\/p>\n

\u4f20\u9012\u53c2\u6570<\/strong><\/p>\n

\u4e0e\u540c\u6b65\u51fd\u6570\u7c7b\u4f3c\uff0c\u53ef\u4ee5\u901a\u8fc7\u51fd\u6570\u53c2\u6570\u4f20\u9012\u53c2\u6570\u3002\u4f46\u662f\uff0c\u5f02\u6b65\u51fd\u6570\u7684\u53c2\u6570\u5fc5\u987b\u662f \u4e0d\u53ef\u53d8<\/strong> \u7684\uff0c\u56e0\u4e3a\u5b83\u4eec\u5c06\u5728\u4e0d\u540c\u7684\u7ebf\u7a0b\u4e0a\u6267\u884c\u3002<\/p>\n

\u4f8b\u5982\uff0c\u8003\u8651\u4ee5\u4e0b Java 8 \u5f02\u6b65\u51fd\u6570\uff1a<\/p>\n

CompletableFuture<Double> calculateValue(int input) {\n    return CompletableFuture.supplyAsync(() -> {\n        \/\/ \u590d\u6742\u7684\u8ba1\u7b97\n        return doSomething(input);\n    });\n}<\/pre>\n
\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0cinput<\/code> \u53c2\u6570\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u57fa\u672c\u7c7b\u578b\uff1a\u6574\u6570\u3002<\/p>\n
\u8fd4\u56de\u503c\u7c7b\u578b<\/strong><\/p>\n
\u5f02\u6b65\u51fd\u6570\u7684\u8fd4\u56de\u503c\u7c7b\u578b\u662f\u4e00\u4e2a CompletableFuture<\/code> \u5bf9\u8c61\u3002CompletableFuture<\/code> \u4ee3\u8868\u4e00\u4e2a\u6f5c\u5728\u7684\u672a\u6765\u7ed3\u679c\u3002\u5b83\u53ef\u4ee5\u5305\u542b\u6267\u884c\u5b8c\u6210\u540e\u7684\u7ed3\u679c\uff0c\u4e5f\u53ef\u4ee5\u5305\u542b\u5f02\u5e38\u4fe1\u606f\u3002<\/p>\n
\u4f8b\u5982\uff0c\u5728\u4e0a\u9762\u7684 calculateValue<\/code> \u51fd\u6570\u4e2d\uff0c\u8fd4\u56de\u503c\u7c7b\u578b\u662f CompletableFuture<Double><\/code>\u3002\u8fd9\u610f\u5473\u7740\u51fd\u6570\u5c06\u5f02\u6b65\u6267\u884c\uff0c\u5e76\u6700\u7ec8\u8fd4\u56de\u4e00\u4e2a\u53cc\u7cbe\u5ea6\u7ed3\u679c\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u8003\u8651\u4e00\u4e2a\u8981\u5904\u7406\u56fe\u50cf\u5217\u8868\u5e76\u8ba1\u7b97\u6bcf\u5f20\u56fe\u50cf\u4e2d\u50cf\u7d20\u603b\u548c\u7684\u573a\u666f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5f02\u6b65\u51fd\u6570\u6765\u5e76\u884c\u6267\u884c\u6b64\u64cd\u4f5c\uff0c\u4ece\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n
import java.util.List;\nimport java.util.concurrent.CompletableFuture;\nimport java.awt.image.BufferedImage;\n\npublic class ImageProcessing {\n\n    public static void main(String[] args) {\n        List<BufferedImage> images = ...; \/\/ \u83b7\u53d6\u56fe\u50cf\u5217\u8868\n\n        \/\/ \u4f7f\u7528 CompletableFuture \u5e76\u884c\u5904\u7406\u56fe\u50cf\n        List<CompletableFuture<Integer>> futures = new ArrayList<>();\n        for (BufferedImage image : images) {\n            futures.add(calculatePixelSum(image));\n        }\n\n        \/\/ \u7b49\u5f85\u6240\u6709\u8ba1\u7b97\u5b8c\u6210\n        int totalPixelSum = 0;\n        for (CompletableFuture<Integer> future : futures) {\n            totalPixelSum += future.get();\n        }\n    }\n\n    public static CompletableFuture<Integer> calculatePixelSum(BufferedImage image) {\n        return CompletableFuture.supplyAsync(() -> {\n            \/\/ \u8ba1\u7b97\u56fe\u50cf\u4e2d\u6240\u6709\u50cf\u7d20\u7684\u603b\u548c\n            return sumPixels(image);\n        });\n    }\n\n    private static int sumPixels(BufferedImage image) {\n        \/\/ \u590d\u6742\u7684\u8ba1\u7b97\n        \/\/ ...\n        return result;\n    }\n}<\/pre>\n
\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f02\u6b65Java\u51fd\u6570\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7c7b...<\/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-202869","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202869","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=202869"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202869\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}