{"id":202557,"date":"2025-05-22T08:32:43","date_gmt":"2025-05-22T00:32:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202557\/"},"modified":"2025-05-22T08:32:43","modified_gmt":"2025-05-22T00:32:43","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e6%8e%a5%e5%8f%a3%e4%b8%8e%e5%8f%8d%e5%ba%94%e5%bc%8f%e7%bc%96%e7%a8%8b%e7%9a%84%e5%8d%8f%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202557\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u63a5\u53e3\u4e0e\u53cd\u5e94\u5f0f\u7f16\u7a0b\u7684\u534f\u4f5c"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u5f0f\u63a5\u53e3\u4e0e\u53cd\u5e94\u5f0f\u7f16\u7a0b\u7684\u534f\u4f5c<\/h1>\n<p>\u5728\u6587\u7ae0\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300aJava\u51fd\u6570\u5f0f\u63a5\u53e3\u4e0e\u53cd\u5e94\u5f0f\u7f16\u7a0b\u7684\u534f\u4f5c\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n<p>\u51fd\u6570\u5f0f\u63a5\u53e3\u548c\u53cd\u5e94\u5f0f\u7f16\u7a0b\u53ef\u534f\u4f5c\u521b\u5efa\u9ad8\u6548\u7684 Java \u7a0b\u5e8f\u3002\u51fd\u6570\u5f0f\u63a5\u53e3\u901a\u8fc7\u5c06\u51fd\u6570\u8868\u793a\u4e3a\u5bf9\u8c61\uff0c\u800c\u53cd\u5e94\u5f0f\u7f16\u7a0b\u4e13\u6ce8\u4e8e\u5904\u7406\u5f02\u6b65\u6570\u636e\u6d41\u3002\u534f\u4f5c\u540e\uff0c\u51fd\u6570\u5f0f\u63a5\u53e3\u8868\u793a\u8ba1\u7b97\uff0c\u53cd\u5e94\u5f0f\u7f16\u7a0b\u5f02\u6b65\u5904\u7406\u8ba1\u7b97\u3002\u4f8b\u5982\uff0c\u6c42\u5e73\u65b9\u51fd\u6570\uff1aFlux.just(1, 2, 3, 4, 5) .map(Function.identity()) .map(x -&gt; x * x) .subscribe(System.out::println);<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729917466671c721a81f71.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u5f0f\u63a5\u53e3\u4e0e\u53cd\u5e94\u5f0f\u7f16\u7a0b\u7684\u534f\u4f5c<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u63a5\u53e3\u548c\u53cd\u5e94\u5f0f\u7f16\u7a0b\u662f Java \u4e2d\u4e24\u4e2a\u5f3a\u5927\u7684\u6982\u5ff5\uff0c\u5f53\u7ed3\u5408\u4f7f\u7528\u65f6\uff0c\u53ef\u4ee5\u521b\u5efa\u9ad8\u6548\u3001\u53ef\u7ef4\u62a4\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p><strong>\u51fd\u6570\u5f0f\u63a5\u53e3<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u63a5\u53e3\u662f\u4ec5\u58f0\u660e\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u63a5\u53e3\u3002\u5b83\u4eec\u672c\u8d28\u4e0a\u662f\u5c06\u51fd\u6570\u8868\u793a\u4e3a\u5bf9\u8c61\u7684\u3002\u5728 Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>@FunctionalInterface<\/code> \u6ce8\u89e3\u6765\u58f0\u660e\u51fd\u6570\u5f0f\u63a5\u53e3\u3002<\/p>\n<p>\u4f8b\u5982\uff0c<code>Function&lt;T, R&gt;<\/code> \u63a5\u53e3\u63a5\u53d7\u7c7b\u578b\u4e3a <code>T<\/code> \u7684\u53c2\u6570\u5e76\u8fd4\u56de\u7c7b\u578b\u4e3a <code>R<\/code> \u7684\u7ed3\u679c\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0\u6b64\u63a5\u53e3\u6765\u521b\u5efa\u7b80\u5355\u7684\u51fd\u6570\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>Function&lt;Integer, Integer&gt; square = x -&gt; x * x;<\/pre>\n<p><strong>\u53cd\u5e94\u5f0f\u7f16\u7a0b<\/strong><\/p>\n<p>\u53cd\u5e94\u5f0f\u7f16\u7a0b\u662f\u4e00\u79cd\u7f16\u7a0b\u8303\u4f8b\uff0c\u4e13\u6ce8\u4e8e\u5904\u7406\u5f02\u6b65\u6570\u636e\u6d41\u3002\u5b83\u57fa\u4e8e\u54cd\u5e94\u5f0f\u539f\u5219\uff0c\u5373\u6570\u636e\u6d41\u4e2d\u7684\u4e8b\u4ef6\u5c06\u5728\u5b83\u4eec\u53ef\u7528\u540e\u7acb\u5373\u88ab\u5904\u7406\u3002<\/p>\n<p>Java \u4e2d\u6700\u5e38\u7528\u7684\u53cd\u5e94\u5f0f\u7f16\u7a0b\u5e93\u662f Reactor\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7c7b\u548c\u63a5\u53e3\uff0c\u7528\u4e8e\u5904\u7406\u5f02\u6b65\u6570\u636e\u6e90\u3001\u521b\u5efa\u53d8\u6362\u5668\u548c\u7ec4\u5408\u5668\uff0c\u4ee5\u53ca\u4e0e\u5176\u4ed6\u7a0b\u5e8f\u5143\u7d20\u4ea4\u4e92\u3002<\/p>\n<p><strong>\u534f\u4f5c<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u63a5\u53e3\u548c\u53cd\u5e94\u5f0f\u7f16\u7a0b\u53ef\u4ee5\u534f\u540c\u5de5\u4f5c\uff0c\u4ee5\u521b\u5efa\u9ad8\u6548\u4e14\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u5f0f\u63a5\u53e3\u6765\u8868\u793a\u9700\u8981\u6267\u884c\u7684\u8ba1\u7b97\uff0c\u5e76\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u6765\u5f02\u6b65\u5904\u7406\u5b83\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u9700\u8981\u5bf9\u4e00\u7cfb\u5217\u6570\u5b57\u6c42\u5e73\u65b9\u5e76\u8fd4\u56de\u7ed3\u679c\u7684\u573a\u666f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u5b9e\u73b0\uff1a<\/p>\n<pre>Flux.just(1, 2, 3, 4, 5)\n   .map(Function.identity())\n   .map(x -&gt; x * x)\n   .subscribe(System.out::println);<\/pre>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a\u6570\u5b57\u6d41\uff0c\u7136\u540e\u4f7f\u7528 <code>map<\/code> \u7b97\u5b50\u4f7f\u7528\u6807\u8bc6\u51fd\u6570\u5c06\u5176\u8f6c\u6362\u4e3a\u5305\u88c5\u7c7b\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u4f7f\u7528\u53e6\u4e00\u4e2a <code>map<\/code> \u7b97\u5b50\u5c06\u5305\u88c5\u7c7b\u6620\u5c04\u5230\u5176\u5e73\u65b9\u3002\u6700\u540e\uff0c\u6211\u4eec\u8ba2\u9605\u6d41\u5e76\u6253\u5370\u6bcf\u4e2a\u503c\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u63a5\u53e3\u548c\u53cd\u5e94\u5f0f\u7f16\u7a0b\u662f Java \u751f\u6001\u7cfb\u7edf\u4e2d\u5f3a\u5927\u7684\u5de5\u5177\u3002\u901a\u8fc7\u5c06\u5b83\u4eec\u7ed3\u5408\u5728\u4e00\u8d77\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u66f4\u7b80\u6d01\u3001\u66f4\u53ef\u7ef4\u62a4\u3001\u66f4\u9ad8\u6548\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u4ece\u800c\u5904\u7406\u5f02\u6b65\u6570\u636e\u6d41\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300aJava\u51fd\u6570\u5f0f\u63a5\u53e3\u4e0e\u53cd\u5e94\u5f0f\u7f16\u7a0b\u7684\u534f\u4f5c\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u53cd\u5e94\u5f0f\u7f16\u7a0b,\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u51fd\u6570\u5f0f\u63a5\u53e3\u4e0e\u53cd\u5e94\u5f0f\u7f16\u7a0b\u7684&#46;&#46;&#46;<\/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-202557","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202557","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=202557"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202557\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}