{"id":202632,"date":"2025-05-22T09:30:01","date_gmt":"2025-05-22T01:30:01","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202632\/"},"modified":"2025-05-22T09:30:01","modified_gmt":"2025-05-22T01:30:01","slug":"%e4%bd%bf%e7%94%a8-java-%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e6%8f%90%e5%8d%87%e5%9b%be%e5%83%8f%e5%a4%84%e7%90%86%e7%ae%97%e6%b3%95%e7%9a%84%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202632\/","title":{"rendered":"\u4f7f\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u5347\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u6027\u80fd"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u4f7f\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u5347\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u6027\u80fd<\/h1>\n<p>\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u4f7f\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u5347\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u6027\u80fd\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729925858671c92e268697.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4f7f\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u5347\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u6027\u80fd<\/strong><\/p>\n<p>\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u5728\u73b0\u4ee3\u8ba1\u7b97\u4e2d\u626e\u6f14\u7740\u81f3\u5173\u91cd\u8981\u7684\u89d2\u8272\u3002\u4ece\u7b80\u5355\u7684\u6ee4\u955c\u5e94\u7528\u5230\u590d\u6742\u7684\u56fe\u50cf\u8bc6\u522b\u4efb\u52a1\uff0c\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u5728\u6211\u4eec\u7684\u65e5\u5e38\u751f\u6d3b\u4e2d\u65e0\u5904\u4e0d\u5728\u3002\u4e3a\u4e86\u5e94\u5bf9\u4e0d\u65ad\u589e\u957f\u7684\u56fe\u50cf\u6570\u636e\u91cf\u548c\u5bf9\u9ad8\u6548\u5904\u7406\u7684\u9700\u6c42\uff0c\u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u6027\u80fd\u3002<\/p>\n<p><strong>\u51fd\u6570\u5f0f\u7f16\u7a0b\u7b80\u4ecb<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u7f16\u7a0b\u662f\u4e00\u79cd\u7f16\u7a0b\u8303\u5f0f\uff0c\u5b83\u5f3a\u8c03\u4e0d\u4fee\u6539\u72b6\u6001\u548c\u4f7f\u7528\u7eaf\u51fd\u6570\u3002\u7eaf\u51fd\u6570\u5177\u6709\u76f8\u540c\u7684\u8f93\u5165\u603b\u662f\u4ea7\u751f\u76f8\u540c\u8f93\u51fa\u7684\u7279\u6027\uff0c\u5e76\u4e14\u4e0d\u4ea7\u751f\u526f\u4f5c\u7528\u3002\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u6838\u5fc3\u6982\u5ff5\u4e4b\u4e00\u662f\u201c\u4e0d\u53ef\u53d8\u6027\u201d\uff0c\u5373\u4e00\u65e6\u521b\u5efa\uff0c\u53d8\u91cf\u7684\u503c\u5c31\u65e0\u6cd5\u66f4\u6539\u3002<\/p>\n<p><strong>\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u56fe\u50cf\u5904\u7406\u4e2d\u7684\u4f18\u52bf<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u7f16\u7a0b\u975e\u5e38\u9002\u5408\u56fe\u50cf\u5904\u7406\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li><strong>\u5e76\u53d1\u6027\uff1a<\/strong>\u51fd\u6570\u5f0f\u4ee3\u7801\u662f\u65e0\u72b6\u6001\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u8f7b\u677e\u5730\u8fdb\u884c\u5e76\u884c\u5904\u7406\uff0c\u4ece\u800c\u5145\u5206\u5229\u7528\u591a\u6838\u5904\u7406\u5668\u3002<\/li>\n<li><strong>\u53ef\u7ec4\u5408\u6027\uff1a<\/strong>\u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u51fd\u6570\u7ec4\u5408\u80fd\u529b\uff0c\u8fd9\u5141\u8bb8\u5f00\u53d1\u590d\u6742\u7684\u56fe\u50cf\u5904\u7406\u6d41\u6c34\u7ebf\u3002<\/li>\n<li><strong>\u5185\u5b58\u6548\u7387\uff1a<\/strong>\u4e0d\u53ef\u53d8\u6027\u6d88\u9664\u4e86\u5bf9\u91cd\u65b0\u5206\u914d\u5185\u5b58\u7684\u9700\u8981\uff0c\u4ece\u800c\u51cf\u5c11\u4e86\u5185\u5b58\u5f00\u9500\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a\u56fe\u50cf\u7070\u5ea6\u5904\u7406<\/strong><\/p>\n<p>\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u5b9e\u6218\u6848\u4f8b\u6765\u5c55\u793a\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u56fe\u50cf\u5904\u7406\u4e2d\u7684\u4f18\u52bf\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u56fe\u50cf\uff0c\u9700\u8981\u5c06\u5176\u8f6c\u6362\u4e3a\u7070\u5ea6\u56fe\u50cf\u3002<\/p>\n<p><strong>\u4f20\u7edf\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre>for (int i = 0; i &lt; width; i++) {\n    for (int j = 0; j &lt; height; j++) {\n        int rgb = image[i][j];\n        int gray = (rgb &gt;&gt; 16) &amp; 0xFF;\n        grayImage[i][j] = gray;\n    }\n}<\/pre>\n<p><strong>\u51fd\u6570\u5f0f\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u4f7f\u7528 Java 8 \u7684\u6d41 API\uff0c\u6211\u4eec\u53ef\u4ee5\u91cd\u5199\u7070\u5ea6\u5904\u7406\u7b97\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>int[] grayImage = IntStream.range(0, width * height)\n    .map(idx -&gt; (image[idx &gt;&gt; 16] &amp; 0xFF))\n    .toArray();<\/pre>\n<p>\u5728\u51fd\u6570\u5f0f\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u6d41\u5f0f\u5904\u7406\u6765\u5e76\u884c\u5904\u7406\u6bcf\u4e2a\u50cf\u7d20\uff0c\u6d88\u9664\u4e86\u8fed\u4ee3\u7684\u9700\u8981\u3002\u7531\u4e8e\u6d41\u64cd\u4f5c\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u8f7b\u677e\u5730\u5e76\u884c\u5316\uff0c\u4ece\u800c\u5927\u5e45\u5ea6\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u7f16\u7a0b\u539f\u5219\u901a\u8fc7\u63d0\u4f9b\u53ef\u7ec4\u5408\u6027\u3001\u5e76\u53d1\u6027\u548c\u5185\u5b58\u6548\u7387\uff0c\u4e3a\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u4f18\u5316\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\u3002\u901a\u8fc7\u5c06\u8fd9\u4e9b\u539f\u5219\u5e94\u7528\u5230\u73b0\u5b9e\u4e16\u754c\u7684\u95ee\u9898\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u6027\u80fd\uff0c\u4ece\u800c\u6ee1\u8db3\u73b0\u4ee3\u8ba1\u7b97\u4e2d\u5bf9\u9ad8\u6548\u56fe\u50cf\u5904\u7406\u7684\u65e5\u76ca\u589e\u957f\u7684\u9700\u6c42\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300a\u4f7f\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u5347\u56fe\u50cf\u5904\u7406\u7b97\u6cd5\u7684\u6027\u80fd\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u5347\u56fe&#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-202632","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202632","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=202632"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202632\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}