{"id":202637,"date":"2025-05-22T08:47:26","date_gmt":"2025-05-22T00:47:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202637\/"},"modified":"2025-05-22T08:47:26","modified_gmt":"2025-05-22T00:47:26","slug":"java-%e5%87%bd%e6%95%b0%e6%89%a7%e8%a1%8c%e6%95%88%e7%8e%87%e4%b8%ba%e4%bd%95%e5%8f%97%e6%96%87%e4%bb%b6-i-o-%e6%93%8d%e4%bd%9c%e5%bd%b1%e5%93%8d%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202637\/","title":{"rendered":"Java \u51fd\u6570\u6267\u884c\u6548\u7387\u4e3a\u4f55\u53d7\u6587\u4ef6 I\/O \u64cd\u4f5c\u5f71\u54cd\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java \u51fd\u6570\u6267\u884c\u6548\u7387\u4e3a\u4f55\u53d7\u6587\u4ef6 I\/O \u64cd\u4f5c\u5f71\u54cd\uff1f<\/h1>\n<p>\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava \u51fd\u6570\u6267\u884c\u6548\u7387\u4e3a\u4f55\u53d7\u6587\u4ef6 I\/O \u64cd\u4f5c\u5f71\u54cd\uff1f\u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p>Java \u51fd\u6570\u6267\u884c\u6548\u7387\u53d7\u6587\u4ef6 I\/O \u64cd\u4f5c\u5f71\u54cd\uff0c\u539f\u56e0\u5982\u4e0b\uff1a\u963b\u585e\u5f0f\u64cd\u4f5c\uff1aI\/O \u64cd\u4f5c\u4f1a\u6682\u505c\u8fdb\u7a0b\uff0c\u5bfc\u81f4\u5ef6\u8fdf\uff1b\u8d44\u6e90\u6d88\u8017\uff1aI\/O \u64cd\u4f5c\u6d88\u8017 CPU \u548c\u5185\u5b58\u8d44\u6e90\uff0c\u5f71\u54cd\u6574\u4f53\u6027\u80fd\uff1b\u7f13\u5b58\u673a\u5236\uff1a\u96be\u4ee5\u9884\u6d4b\u7684\u7f13\u5b58\u884c\u4e3a\u4f1a\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729926392671c94f85850c.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u6267\u884c\u6548\u7387\u4e3a\u4f55\u53d7\u6587\u4ef6 I\/O \u64cd\u4f5c\u5f71\u54cd\uff1f<\/strong><\/p>\n<p><strong>\u7b80\u4ecb<\/strong><\/p>\n<p>\u6587\u4ef6 I\/O \u64cd\u4f5c\u53ef\u4ee5\u663e\u8457\u5f71\u54cd Java \u51fd\u6570\u7684\u6267\u884c\u6548\u7387\u3002\u4e86\u89e3\u8fd9\u79cd\u5f71\u54cd\u7684\u539f\u56e0\u81f3\u5173\u91cd\u8981\uff0c\u4ee5\u4fbf\u91c7\u53d6\u63aa\u65bd\u4f18\u5316\u4ee3\u7801\u5e76\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<p><strong>\u6587\u4ef6 I\/O \u64cd\u4f5c\u7684\u7279\u70b9<\/strong><\/p>\n<ul>\n<li><strong>\u963b\u585e\u5f0f\uff1a<\/strong>\u6587\u4ef6 I\/O \u64cd\u4f5c\u901a\u5e38\u662f\u963b\u585e\u5f0f\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5f53\u8fdb\u7a0b\u7b49\u5f85\u6587\u4ef6\u64cd\u4f5c\u5b8c\u6210\u65f6\uff0c\u5b83\u4f1a\u88ab\u6682\u505c\u3002<\/li>\n<li><strong>\u6162\u901f\uff1a<\/strong>\u4ece\u78c1\u76d8\u8bfb\u53d6\u6216\u5199\u5165\u6570\u636e\u6bd4\u4ece\u5185\u5b58\u64cd\u4f5c\u6570\u636e\u8981\u6162\u5f97\u591a\u3002<\/li>\n<li><strong>\u8d44\u6e90\u5bc6\u96c6\u578b\uff1a<\/strong>\u6587\u4ef6 I\/O \u64cd\u4f5c\u4f1a\u6d88\u8017 CPU \u8d44\u6e90\u548c\u5185\u5b58\u3002<\/li>\n<\/ul>\n<p><strong>\u5bf9\u51fd\u6570\u6267\u884c\u6548\u7387\u7684\u5f71\u54cd<\/strong><\/p>\n<p>\u6587\u4ef6 I\/O \u64cd\u4f5c\u4f1a\u5f71\u54cd\u51fd\u6570\u6267\u884c\u6548\u7387\uff0c\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u5ef6\u8fdf\uff1a<\/strong>\u963b\u585e\u5f0f I\/O \u64cd\u4f5c\u4f1a\u5bfc\u81f4\u51fd\u6570\u5728\u7b49\u5f85\u6587\u4ef6\u64cd\u4f5c\u5b8c\u6210\u65f6\u6682\u505c\uff0c\u4ece\u800c\u589e\u52a0\u6267\u884c\u65f6\u95f4\u3002<\/li>\n<li><strong>\u8d44\u6e90\u6d88\u8017\uff1a<\/strong>I\/O \u64cd\u4f5c\u4f1a\u6d88\u8017 CPU \u548c\u5185\u5b58\u8d44\u6e90\uff0c\u5f71\u54cd\u51fd\u6570\u7684\u6574\u4f53\u6027\u80fd\u3002<\/li>\n<li><strong>\u7f13\u5b58\uff1a<\/strong>\u6587\u4ef6 I\/O \u7f13\u5b58\u673a\u5236\u53ef\u80fd\u4f1a\u5bfc\u81f4\u96be\u4ee5\u9884\u6d4b\u7684\u6027\u80fd\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b Java \u51fd\u6570\uff0c\u5b83\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\u5e76\u5c06\u5176\u5904\u7406\uff1a<\/p>\n<pre>public static void processDataFromFile(String filePath) {\n    try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {\n        String line;\n        while ((line = reader.readLine()) != null) {\n            \/\/ Process the line\n        }\n    } catch (IOException e) {\n        e.printStackTrace();\n    }\n}<\/pre>\n<p>\u6b64\u51fd\u6570\u4f1a\u56e0\u4ee5\u4e0b\u539f\u56e0\u800c\u6548\u7387\u4f4e\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u963b\u585e\u5f0f I\/O\uff1a<\/strong>\u4f7f\u7528 <code>BufferedReader<\/code> \u4f1a\u5bfc\u81f4\u963b\u585e\u5f0f\u6587\u4ef6\u8bfb\u53d6\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u9891\u7e41\u6587\u4ef6\u8bbf\u95ee\uff1a<\/strong>\u6bcf\u6b21\u8bfb\u53d6\u6587\u4ef6\u65f6\u90fd\u8981\u521b\u5efa\u65b0\u7684 <code>BufferedReader<\/code> \u5bf9\u8c61\uff0c\u4f1a\u589e\u52a0\u8d44\u6e90\u6d88\u8017\u3002<\/li>\n<\/ul>\n<p><strong>\u4f18\u5316\u6280\u5de7<\/strong><\/p>\n<p>\u4e3a\u4e86\u4f18\u5316\u53d7\u6587\u4ef6 I\/O \u64cd\u4f5c\u5f71\u54cd\u7684\u51fd\u6570\u7684\u6267\u884c\u6548\u7387\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u6280\u5de7\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u5f02\u6b65 I\/O\uff1a<\/strong>\u5c3d\u91cf\u4f7f\u7528\u5f02\u6b65 I\/O \u5e93\uff08\u4f8b\u5982 NIO \u6216 AIO\uff09\uff0c\u907f\u514d\u963b\u585e\u5f0f I\/O \u64cd\u4f5c\u3002<\/li>\n<li><strong>\u7f13\u5b58\u6587\u4ef6\uff1a<\/strong>\u5c06\u7ecf\u5e38\u8bbf\u95ee\u7684\u6587\u4ef6\u7f13\u5b58\u5230\u5185\u5b58\u4e2d\uff0c\u4ee5\u51cf\u5c11\u5bf9\u78c1\u76d8\u7684\u8bbf\u95ee\u6b21\u6570\u3002<\/li>\n<li><strong>\u6279\u91cf\u5316 I\/O \u64cd\u4f5c\uff1a<\/strong>\u4f7f\u7528\u6279\u91cf I\/O \u64cd\u4f5c\uff08\u4f8b\u5982 <code>FileChannel.read()<\/code>\uff09\u5c06\u591a\u4e2a I\/O \u64cd\u4f5c\u5408\u5e76\u4e3a\u4e00\u6b21\u64cd\u4f5c\uff0c\u51cf\u5c11\u7cfb\u7edf\u8c03\u7528\u6b21\u6570\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5185\u5b58\u6620\u5c04\u6587\u4ef6\uff1a<\/strong>\u5c06\u6587\u4ef6\u76f4\u63a5\u6620\u5c04\u5230\u5185\u5b58\u4e2d\uff0c\u907f\u514d\u590d\u5236\u6587\u4ef6\u6570\u636e\u7684\u5f00\u9500\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300aJava \u51fd\u6570\u6267\u884c\u6548\u7387\u4e3a\u4f55\u53d7\u6587\u4ef6 I\/O \u64cd\u4f5c\u5f71\u54cd\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8ejava,\u6587\u4ef6 I\/O\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u51fd\u6570\u6267\u884c\u6548\u7387\u4e3a\u4f55\u53d7\u6587\u4ef6&#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-202637","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202637","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=202637"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202637\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}