{"id":202693,"date":"2025-05-22T10:03:24","date_gmt":"2025-05-22T02:03:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202693\/"},"modified":"2025-05-22T10:03:24","modified_gmt":"2025-05-22T02:03:24","slug":"%e7%94%a8-java-%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e8%bf%9b%e8%a1%8c%e5%b9%b6%e8%a1%8c%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202693\/","title":{"rendered":"\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u8fdb\u884c\u5e76\u884c\u5904\u7406"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u8fdb\u884c\u5e76\u884c\u5904\u7406<\/h1>\n<p>\u4f60\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u8fdb\u884c\u5e76\u884c\u5904\u7406\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p>\u5728 Java \u4e2d\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u53ef\u4ee5\u5b9e\u73b0\u5e76\u884c\u5904\u7406\uff0c\u63d0\u9ad8\u6027\u80fd\u548c\u6548\u7387\u3002\u901a\u8fc7\u4f7f\u7528 Java 8 \u7684\u5e76\u884c\u6d41\uff1a\u521b\u5efa\u5e76\u884c\u6d41\uff1a\u901a\u8fc7\u8c03\u7528 Stream.parallel() \u65b9\u6cd5\u521b\u5efa\u5e76\u884c\u6d41\uff0c\u5b83\u53ef\u4ee5\u5728\u591a\u4e2a\u7ebf\u7a0b\u4e0a\u540c\u65f6\u5904\u7406\u5143\u7d20\u3002\u5e76\u884c\u5904\u7406\uff1a\u4f7f\u7528\u5e76\u884c\u6d41\u7684\u6d41\u64cd\u4f5c\uff0c\u4f8b\u5982 forEach() \u548c sum()\uff0c\u5bf9\u5143\u7d20\u8fdb\u884c\u5e76\u53d1\u5904\u7406\u3002\u5b9e\u9645\u6848\u4f8b\uff1a\u5e76\u884c\u5316\u6570\u7ec4\u6c42\u548c\uff0c\u901a\u8fc7\u5e76\u884c\u6d41\u663e\u8457\u63d0\u9ad8\u6c42\u548c\u901f\u5ea6\u3002\u5e76\u884c\u5904\u7406\u7684\u4f18\u70b9\u5305\u62ec\uff1a\u9ad8\u6548\u7387\uff1a\u5e76\u884c\u6d41\u5229\u7528\u591a\u4e2a\u7ebf\u7a0b\uff0c\u5927\u5927\u63d0\u9ad8\u901f\u5ea6\u3002\u7b80\u4fbf\u6027\uff1aJava 8 \u5e76\u884c\u6d41 API \u63d0\u4f9b\u6613\u7528\u65b9\u6cd5\u6765\u7ba1\u7406\u5e76\u884c\u6d41\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729932520671cace885346.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4f7f\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u8fdb\u884c\u5e76\u884c\u5904\u7406<\/strong><\/p>\n<p>\u5728 Java \u4e2d\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u5e76\u884c\u5904\u7406\uff0c\u4ece\u800c\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u6548\u7387\u3002\u672c\u6587\u5c06\u6307\u5bfc\u4f60\u5982\u4f55\u4f7f\u7528 Java 8 \u7684\u5e76\u884c\u6d41\u5728\u5b9e\u9645\u573a\u666f\u4e2d\u8fdb\u884c\u5e76\u884c\u5904\u7406\u3002<\/p>\n<p><strong>\u5e76\u884c\u6d41<\/strong><\/p>\n<p>Java 8 \u5f15\u5165\u4e86 <code>Stream<\/code> API\uff0c\u63d0\u4f9b\u4e86 <code>parallel()<\/code> \u65b9\u6cd5\u6765\u521b\u5efa\u5e76\u884c\u6d41\u3002\u5e76\u884c\u6d41\u53ef\u4ee5\u5728\u591a\u4e2a\u7ebf\u7a0b\u4e0a\u540c\u65f6\u5904\u7406\u5143\u7d20\uff0c\u4ece\u800c\u5927\u5927\u63d0\u9ad8\u5e76\u884c\u4efb\u52a1\u7684\u6267\u884c\u901f\u5ea6\u3002<\/p>\n<pre>List&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();\n\/\/ \u521b\u5efa\u5e76\u884c\u6d41\nStream&lt;Integer&gt; parallelStream = numbers.parallelStream();\n\n\/\/ \u8fd0\u7528\u6d41\u64cd\u4f5c\u8fdb\u884c\u5e76\u53d1\u5904\u7406\nparallelStream.forEach(i -&gt; {\n    \/\/ \u5bf9\u6bcf\u4e2a\u5143\u7d20 i \u8fdb\u884c\u5904\u7406\n});<\/pre>\n<p><strong>\u5b9e\u9645\u6848\u4f8b\uff1a\u5e76\u884c\u5316\u6570\u7ec4\u6c42\u548c<\/strong><\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u5305\u542b 1000 \u4e07\u4e2a\u6574\u6570\u7684\u6570\u7ec4\uff0c\u6211\u4eec\u5e0c\u671b\u8ba1\u7b97\u8fd9\u4e9b\u6574\u6570\u7684\u603b\u548c\u3002\u4f7f\u7528\u4f20\u7edf\u4e32\u884c\u65b9\u6cd5\uff0c\u6c42\u548c\u9700\u8981\u82b1\u8d39\u76f8\u5f53\u957f\u7684\u65f6\u95f4\u3002\u901a\u8fc7\u4f7f\u7528\u5e76\u884c\u6d41\uff0c\u6211\u4eec\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<pre>int[] numbers = new int[10000000];\n\/\/ \u521b\u5efa\u5e76\u884c\u6d41\nIntStream parallelStream = IntStream.of(numbers).parallel();\n\n\/\/ \u5e76\u884c\u6c42\u548c\nint sum = parallelStream.sum();\n\nSystem.out.println(\"\u5e76\u884c\u6c42\u548c\u7ed3\u679c\uff1a\" + sum);<\/pre>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<p>\u4f7f\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u8fdb\u884c\u5e76\u884c\u5904\u7406\u5177\u6709\u4ee5\u4e0b\u4f18\u70b9\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6548\u7387\uff1a<\/strong>\u5e76\u884c\u6d41\u5229\u7528\u591a\u4e2a\u7ebf\u7a0b\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u5e76\u884c\u5904\u7406\u7684\u901f\u5ea6\u548c\u6548\u7387\u3002<\/li>\n<li><strong>\u7b80\u4fbf\u6027\uff1a<\/strong>Java 8 \u7684\u5e76\u884c\u6d41 API \u63d0\u4f9b\u4e86\u7b80\u6d01\u6613\u7528\u7684\u65b9\u6cd5\u6765\u521b\u5efa\u548c\u7ba1\u7406\u5e76\u884c\u6d41\u3002<\/li>\n<li><strong>\u6269\u5c55\u6027\uff1a<\/strong>\u51fd\u6570\u5f0f\u7f16\u7a0b\u4f7f\u5e76\u53d1\u5904\u7406\u4ee3\u7801\u66f4\u5177\u6269\u5c55\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u4fbf\u4e8e\u6839\u636e\u9700\u8981\u6269\u5c55\u6216\u4fee\u6539\u3002<\/li>\n<\/ul>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u5728 Java \u4e2d\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u662f\u8fdb\u884c\u5e76\u884c\u5904\u7406\u7684\u5f3a\u5927\u65b9\u6cd5\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u6548\u7387\u3002\u901a\u8fc7\u4f7f\u7528\u5e76\u884c\u6d41\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u5730\u5e76\u884c\u5316\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1\uff0c\u4ece\u800c\u4f18\u5316\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u8fdb\u884c\u5e76\u884c\u5904\u7406\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8ejava,\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u8fdb\u884c\u5e76\u884c&#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-202693","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202693","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=202693"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202693\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}