{"id":1392,"date":"2025-08-21T16:28:46","date_gmt":"2025-08-21T08:28:46","guid":{"rendered":"https:\/\/zero-zl.cn\/?p=1392"},"modified":"2025-08-21T22:21:06","modified_gmt":"2025-08-21T14:21:06","slug":"java-io","status":"publish","type":"post","link":"https:\/\/zero-zl.cn\/index.php\/2025\/08\/21\/java-io\/","title":{"rendered":"Java IO"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"_1\u3001\u4ec0\u4e48\u662f\u6bd4\u7279-bit-\u4ec0\u4e48\u662f\u5b57\u8282-byte-\u4ec0\u4e48\u662f\u5b57\u7b26-char-\u5b83\u4eec\u957f\u5ea6\u662f\u591a\u5c11-\u5404\u6709\u4ec0\u4e48\u533a\u522b\"><a href=\"#_1\u3001\u4ec0\u4e48\u662f\u6bd4\u7279-bit-\u4ec0\u4e48\u662f\u5b57\u8282-byte-\u4ec0\u4e48\u662f\u5b57\u7b26-char-\u5b83\u4eec\u957f\u5ea6\u662f\u591a\u5c11-\u5404\u6709\u4ec0\u4e48\u533a\u522b\">1\u3001\u4ec0\u4e48\u662f\u6bd4\u7279(Bit),\u4ec0\u4e48\u662f\u5b57\u8282(Byte),\u4ec0\u4e48\u662f\u5b57\u7b26(Char),\u5b83\u4eec\u957f\u5ea6\u662f\u591a\u5c11,\u5404\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Bit\u6700\u5c0f\u7684\u4e8c\u8fdb\u5236\u5355\u4f4d \uff0c\u662f\u8ba1\u7b97\u673a\u7684\u64cd\u4f5c\u90e8\u5206\u53d6\u503c0\u6216\u80051\u3002<\/p>\n\n\n\n<p>Byte\u662f\u8ba1\u7b97\u673a\u4e2d\u5b58\u50a8\u6570\u636e\u7684\u5355\u5143\uff0c\u662f\u4e00\u4e2a8\u4f4d\u7684\u4e8c\u8fdb\u5236\u6570\uff0c\uff08\u8ba1\u7b97\u673a\u5185\u90e8\uff0c\u4e00\u4e2a\u5b57\u8282\u53ef\u8868\u793a\u4e00\u4e2a\u82f1\u6587\u5b57\u6bcd\uff0c\u4e24\u4e2a\u5b57\u8282\u53ef\u8868\u793a\u4e00\u4e2a\u6c49\u5b57\u3002\uff09 \u53d6\u503c\uff08-128-127\uff09<\/p>\n\n\n\n<p>Char\u662f\u7528\u6237\u7684\u53ef\u8bfb\u5199\u7684\u6700\u5c0f\u5355\u4f4d\uff0c\u4ed6\u53ea\u662f\u62bd\u8c61\u610f\u4e49\u4e0a\u7684\u4e00\u4e2a\u7b26\u53f7\u3002\u5982\u20185\u2019\uff0c\u2018\u4e2d\u2019\uff0c\u2018\uffe5\u2019\u7b49\u7b49\u3002\u5728java\u91cc\u9762\u753116\u4f4dbit\u7ec4\u6210Char \u53d6\u503c\uff080-65535\uff09<\/p>\n\n\n\n<p>Bit \u662f\u6700\u5c0f\u5355\u4f4d \u8ba1\u7b97\u673a\u4ed6\u53ea\u80fd\u8ba4\u8bc60\u6216\u80051<\/p>\n\n\n\n<p>Byte\u662f8\u4e2a\u5b57\u8282 \u662f\u7ed9\u8ba1\u7b97\u673a\u770b\u7684<\/p>\n\n\n\n<p>\u5b57\u7b26 \u662f\u770b\u5230\u7684\u4e1c\u897f \u4e00\u4e2a\u5b57\u7b26=\u4e8c\u4e2a\u5b57\u8282<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_2\u3001\u4ec0\u4e48\u662fio\"><a href=\"#_2\u3001\u4ec0\u4e48\u662fio\">2\u3001\u4ec0\u4e48\u662fIO\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Java IO<\/strong>\uff1a\u662f\u4ee5\u6d41\u4e3a\u57fa\u7840\u8fdb\u884c\u6570\u636e\u7684\u8f93\u5165\u8f93\u51fa\u7684\uff0c\u6240\u6709\u6570\u636e\u88ab\u4e32\u884c\u5316(\u6240\u8c13\u4e32\u884c\u5316\u5c31\u662f\u6570\u636e\u8981\u6309\u987a\u5e8f\u8fdb\u884c\u8f93\u5165\u8f93\u51fa)\u5199\u5165\u8f93\u51fa\u6d41\u3002\u7b80\u5355\u6765\u8bf4\u5c31\u662fjava\u901a\u8fc7io\u6d41\u65b9\u5f0f\u548c\u5916\u90e8\u8bbe\u5907\u8fdb\u884c\u4ea4\u4e92\u3002<br>\u5728Java\u7c7b\u5e93\u4e2d\uff0cIO\u90e8\u5206\u7684\u5185\u5bb9\u662f\u5f88\u5e9e\u5927\u7684\uff0c\u56e0\u4e3a\u5b83\u6d89\u53ca\u7684\u9886\u57df\u5f88\u5e7f\u6cdb\uff1a\u6807\u51c6\u8f93\u5165\u8f93\u51fa\uff0c\u6587\u4ef6\u7684\u64cd\u4f5c\uff0c\u7f51\u7edc\u4e0a\u7684\u6570\u636e\u4f20\u8f93\u6d41\uff0c\u5b57\u7b26\u4e32\u6d41\uff0c\u5bf9\u8c61\u6d41\u7b49\u7b49\u7b49\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u7a0b\u5e8f\u4ece\u670d\u52a1\u5668\u4e0a\u4e0b\u8f7d\u56fe\u7247\uff0c\u5c31\u662f\u901a\u8fc7\u6d41\u7684\u65b9\u5f0f\u4ece\u7f51\u7edc\u4e0a\u4ee5\u6d41\u7684\u65b9\u5f0f\u5230\u7a0b\u5e8f\u4e2d\uff0c\u5728\u5230\u786c\u76d8\u4e2d<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_3\u3001\u5728\u4e86\u89e3\u4e0d\u540c\u7684io\u4e4b\u524d\u5148\u4e86\u89e3-\u540c\u6b65\u4e0e\u5f02\u6b65-\u963b\u585e\u4e0e\u975e\u963b\u585e\u7684\u533a\u522b\"><a href=\"#_3\u3001\u5728\u4e86\u89e3\u4e0d\u540c\u7684io\u4e4b\u524d\u5148\u4e86\u89e3-\u540c\u6b65\u4e0e\u5f02\u6b65-\u963b\u585e\u4e0e\u975e\u963b\u585e\u7684\u533a\u522b\">3\u3001\u5728\u4e86\u89e3\u4e0d\u540c\u7684IO\u4e4b\u524d\u5148\u4e86\u89e3\uff1a\u540c\u6b65\u4e0e\u5f02\u6b65\uff0c\u963b\u585e\u4e0e\u975e\u963b\u585e\u7684\u533a\u522b\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u540c\u6b65<\/strong>\uff1a\u4e00\u4e2a\u4efb\u52a1\u7684\u5b8c\u6210\u4e4b\u524d\u4e0d\u80fd\u505a\u5176\u4ed6\u64cd\u4f5c\uff0c\u5fc5\u987b\u7b49\u5f85\uff08\u7b49\u4e8e\u5728\u6253\u7535\u8bdd\uff09<br><strong>\u5f02\u6b65<\/strong>\uff1a\u4e00\u4e2a\u4efb\u52a1\u7684\u5b8c\u6210\u4e4b\u524d\uff0c\u53ef\u4ee5\u8fdb\u884c\u5176\u4ed6\u64cd\u4f5c\uff08\u7b49\u4e8e\u5728\u804aQQ\uff09<br><strong>\u963b\u585e<\/strong>\uff1a\u662f\u76f8\u5bf9\u4e8eCPU\u6765\u8bf4\u7684\uff0c \u6302\u8d77\u5f53\u524d\u7ebf\u7a0b\uff0c\u4e0d\u80fd\u505a\u5176\u4ed6\u64cd\u4f5c\u53ea\u80fd\u7b49\u5f85<br><strong>\u975e\u963b\u585e<\/strong>\uff1a\u65e0\u987b\u6302\u8d77\u5f53\u524d\u7ebf\u7a0b\uff0c\u53ef\u4ee5\u53bb\u6267\u884c\u5176\u4ed6\u64cd\u4f5c<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_4\u3001\u4ec0\u4e48\u662fbio\"><a href=\"#_4\u3001\u4ec0\u4e48\u662fbio\">4\u3001\u4ec0\u4e48\u662fBIO?<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>BIO<\/strong>\uff1a<strong>\u540c\u6b65\u5e76\u963b\u585e<\/strong>\uff0c\u670d\u52a1\u5668\u5b9e\u73b0\u4e00\u4e2a\u8fde\u63a5\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5373\u5ba2\u6237\u7aef\u6709\u8fde\u63a5\u8bf7\u6c42\u65f6\u670d\u52a1\u5668\u7aef\u5c31\u9700\u8981\u542f\u52a8\u4e00\u4e2a\u7ebf\u7a0b\u8fdb\u884c\u5904\u7406\uff0c\u6ca1\u5904\u7406\u5b8c\u4e4b\u524d\u6b64\u7ebf\u7a0b\u4e0d\u80fd\u505a\u5176\u4ed6\u64cd\u4f5c\uff08\u5982\u679c\u662f\u5355\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4f20\u8f93\u7684\u6587\u4ef6\u5f88\u5927\u5462\uff1f\uff09\uff0c\u5f53\u7136\u53ef\u4ee5\u901a\u8fc7\u7ebf\u7a0b\u6c60\u673a\u5236\u6539\u5584\u3002<\/p>\n\n\n\n<p>BIO\u65b9\u5f0f<strong>\u9002\u7528\u4e8e\u8fde\u63a5\u6570\u76ee\u6bd4\u8f83\u5c0f\u4e14\u56fa\u5b9a\u7684\u67b6\u6784<\/strong>\uff0c\u8fd9\u79cd\u65b9\u5f0f\u5bf9\u670d\u52a1\u5668\u8d44\u6e90\u8981\u6c42\u6bd4\u8f83\u9ad8\uff0c\u5e76\u53d1\u5c40\u9650\u4e8e\u5e94\u7528\u4e2d\uff0cJDK1.4\u4ee5\u524d\u7684\u552f\u4e00\u9009\u62e9\uff0c\u4f46\u7a0b\u5e8f\u76f4\u89c2\u7b80\u5355\u6613\u7406\u89e3\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_5\u3001\u4ec0\u4e48\u662fnio\"><a href=\"#_5\u3001\u4ec0\u4e48\u662fnio\">5\u3001\u4ec0\u4e48\u662fNIO\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>NIO<\/strong>\uff1a<strong>\u540c\u6b65\u975e\u963b\u585e<\/strong>\uff0c\u670d\u52a1\u5668\u5b9e\u73b0\u4e00\u4e2a\u8fde\u63a5\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5373\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u8fde\u63a5\u8bf7\u6c42\u90fd\u4f1a\u6ce8\u518c\u5230\u591a\u8def\u590d\u7528\u5668\u4e0a\uff0c\u591a\u8def\u590d\u7528\u5668\u8f6e\u8be2\u5230\u8fde\u63a5\u6709I\/O\u8bf7\u6c42\u65f6\u624d\u542f\u52a8\u4e00\u4e2a\u7ebf\u7a0b\u8fdb\u884c\u5904\u7406\u3002<\/p>\n\n\n\n<p>NIO\u65b9\u5f0f<strong>\u9002\u7528\u4e8e\u8fde\u63a5\u6570\u76ee\u591a\u4e14\u8fde\u63a5\u6bd4\u8f83\u77ed\uff08\u8f7b\u64cd\u4f5c\uff09\u7684\u67b6\u6784<\/strong>\uff0c\u6bd4\u5982\u804a\u5929\u670d\u52a1\u5668\uff0c\u5e76\u53d1\u5c40\u9650\u4e8e\u5e94\u7528\u4e2d\uff0c\u7f16\u7a0b\u6bd4\u8f83\u590d\u6742\uff0cJDK1.4\u4e4b\u540e\u5f00\u59cb\u652f\u6301\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_6\u3001\u4ec0\u4e48\u662faio\"><a href=\"#_6\u3001\u4ec0\u4e48\u662faio\">6\u3001\u4ec0\u4e48\u662fAIO\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>AIO<\/strong>\uff1a<strong>\u5f02\u6b65\u975e\u963b\u585e<\/strong>\uff0c\u670d\u52a1\u5668\u5b9e\u73b0\u6a21\u5f0f\u4e3a\u4e00\u4e2a\u6709\u6548\u8bf7\u6c42\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5ba2\u6237\u7aef\u7684I\/O\u8bf7\u6c42\u90fd\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u5148\u5b8c\u6210\u4e86\u518d\u901a\u77e5\u670d\u52a1\u5668\u5e94\u7528\u53bb\u542f\u52a8\u7ebf\u7a0b\u8fdb\u884c\u5904\u7406\uff0cAIO\u65b9\u5f0f\u4f7f\u7528\u4e8e\u8fde\u63a5\u6570\u76ee\u591a\u4e14\u8fde\u63a5\u6bd4\u8f83\u957f\uff08\u91cd\u64cd\u4f5c\uff09\u7684\u67b6\u6784\uff0c\u6bd4\u5982\u76f8\u518c\u670d\u52a1\u5668\uff0c\u5145\u5206\u8c03\u7528\u64cd\u4f5c\u7cfb\u7edf\u53c2\u4e0e\u5e76\u53d1\u64cd\u4f5c\uff0c\u7f16\u7a0b\u6bd4\u8f83\u590d\u6742\uff0cJDK1.7\u4e4b\u540e\u5f00\u59cb\u652f\u6301\u3002<\/p>\n\n\n\n<p>AIO\u5c5e\u4e8eNIO\u5305\u4e2d\u7684\u7c7b\u5b9e\u73b0\uff0c\u5176\u5b9e<strong>IO\u4e3b\u8981\u5206\u4e3aBIO\u548cNIO<\/strong>\uff0cAIO\u53ea\u662f\u9644\u52a0\u54c1\uff0c\u89e3\u51b3IO\u4e0d\u80fd\u5f02\u6b65\u7684\u5b9e\u73b0\u5728\u4ee5\u524d\u5f88\u5c11\u6709Linux\u7cfb\u7edf\u652f\u6301AIO\uff0cWindows\u7684IOCP\u5c31\u662f\u8be5AIO\u6a21\u578b\u3002\u4f46\u662f\u73b0\u5728\u7684\u670d\u52a1\u5668\u4e00\u822c\u90fd\u662f\u652f\u6301AIO\u64cd\u4f5c<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_7\u3001\u4ec0\u4e48\u662fnetty\"><a href=\"#_7\u3001\u4ec0\u4e48\u662fnetty\">7\u3001\u4ec0\u4e48\u662fNetty?<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Netty\u662f\u7531JBOSS\u63d0\u4f9b\u7684\u4e00\u4e2aJava\u5f00\u6e90\u6846\u67b6\u3002Netty\u63d0\u4f9b\u5f02\u6b65\u7684\u3001\u4e8b\u4ef6\u9a71\u52a8\u7684\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u6846\u67b6\u548c\u5de5\u5177\uff0c\u7528\u4ee5\u5feb\u901f\u5f00\u53d1\u9ad8\u6027\u80fd\u3001\u9ad8\u53ef\u9760\u6027\u7684\u7f51\u7edc\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u7a0b\u5e8f\u3002<br>Netty \u662f\u4e00\u4e2a\u57fa\u4e8eNIO\u7684\u5ba2\u6237\u3001\u670d\u52a1\u5668\u7aef\u7f16\u7a0b\u6846\u67b6\uff0c\u4f7f\u7528Netty \u53ef\u4ee5\u786e\u4fdd\u4f60\u5feb\u901f\u548c\u7b80\u5355\u7684\u5f00\u53d1\u51fa\u4e00\u4e2a\u7f51\u7edc\u5e94\u7528\uff0c\u4f8b\u5982\u5b9e\u73b0\u4e86\u67d0\u79cd\u534f\u8bae\u7684\u5ba2\u6237\uff0c\u670d\u52a1\u7aef\u5e94\u7528\u3002Netty\u76f8\u5f53\u7b80\u5316\u548c\u6d41\u7ebf\u5316\u4e86\u7f51\u7edc\u5e94\u7528\u7684\u7f16\u7a0b\u5f00\u53d1\u8fc7\u7a0b\uff0c\u4f8b\u5982\uff0cTCP\u548cUDP\u7684socket\u670d\u52a1\u5f00\u53d1\u3002<\/p>\n\n\n\n<p>Netty\u662f\u7531NIO\u6f14\u8fdb\u800c\u6765\uff0c\u4f7f\u7528\u8fc7NIO\u7f16\u7a0b\u7684\u7528\u6237\u5c31\u77e5\u9053NIO\u7f16\u7a0b\u975e\u5e38\u7e41\u91cd\uff0cNetty\u662f\u80fd\u591f\u80fd\u8ddf\u597d\u7684\u4f7f\u7528NIO<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_8\u3001bio\u548cnio\u3001aio\u7684\u533a\u522b\"><a href=\"#_8\u3001bio\u548cnio\u3001aio\u7684\u533a\u522b\">8\u3001BIO\u548cNIO\u3001AIO\u7684\u533a\u522b\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>BIO\u662f\u963b\u585e\u7684\uff0cNIO\u662f\u975e\u963b\u585e\u7684.<\/p>\n\n\n\n<p>BIO\u662f\u9762\u5411\u6d41\u7684\uff0c\u53ea\u80fd\u5355\u5411\u8bfb\u5199\uff0cNIO\u662f\u9762\u5411\u7f13\u51b2\u7684, \u53ef\u4ee5\u53cc\u5411\u8bfb\u5199<\/p>\n\n\n\n<p>\u4f7f\u7528BIO\u505aSocket\u8fde\u63a5\u65f6\uff0c\u7531\u4e8e\u5355\u5411\u8bfb\u5199\uff0c\u5f53\u6ca1\u6709\u6570\u636e\u65f6\uff0c\u4f1a\u6302\u8d77\u5f53\u524d\u7ebf\u7a0b\uff0c\u963b\u585e\u7b49\u5f85\uff0c\u4e3a\u9632\u6b62\u5f71\u54cd\u5176\u5b83\u8fde\u63a5,\uff0c\u9700\u8981\u4e3a\u6bcf\u4e2a\u8fde\u63a5\u65b0\u5efa\u7ebf\u7a0b\u5904\u7406.\uff0c\u7136\u800c\u7cfb\u7edf\u8d44\u6e90\u662f\u6709\u9650\u7684,\uff0c\u4e0d\u80fd\u8fc7\u591a\u7684\u65b0\u5efa\u7ebf\u7a0b\uff0c\u7ebf\u7a0b\u8fc7\u591a\u5e26\u6765\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u7684\u5207\u6362\uff0c\u4ece\u6765\u5e26\u6765\u66f4\u5927\u7684\u6027\u80fd\u635f\u8017\uff0c\u56e0\u6b64\u9700\u8981\u4f7f\u7528NIO\u8fdb\u884cBIO\u591a\u8def\u590d\u7528\uff0c\u4f7f\u7528\u4e00\u4e2a\u7ebf\u7a0b\u6765\u76d1\u542c\u6240\u6709Socket\u8fde\u63a5\uff0c\u4f7f\u7528\u672c\u7ebf\u7a0b\u6216\u8005\u5176\u4ed6\u7ebf\u7a0b\u5904\u7406\u8fde\u63a5<\/p>\n\n\n\n<p>AIO\u662f\u975e\u963b\u585e \u4ee5\u5f02\u6b65\u65b9\u5f0f\u53d1\u8d77 I\/O \u64cd\u4f5c\u3002\u5f53 I\/O \u64cd\u4f5c\u8fdb\u884c\u65f6\u53ef\u4ee5\u53bb\u505a\u5176\u4ed6\u64cd\u4f5c\uff0c\u7531\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u7a7a\u95f4\u63d0\u9192IO\u64cd\u4f5c\u5df2\u5b8c\u6210\uff08\u4e0d\u61c2\u7684\u53ef\u4ee5\u5f80\u4e0b\u770b\uff09<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_9\u3001io\u6d41\u7684\u5206\u7c7b\"><a href=\"#_9\u3001io\u6d41\u7684\u5206\u7c7b\">9\u3001IO\u6d41\u7684\u5206\u7c7b?<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><mark>\u6309\u6d41\u7684\u65b9\u5411<\/mark>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8f93\u5165\u6d41\uff08InputStream\uff09<\/strong>\uff1a\u4ece\u6587\u4ef6\u8bfb\u5165\u5230\u5185\u5b58\u3002\u53ea\u80fd\u8fdb\u884c\u8bfb\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li><strong>\u8f93\u51fa\u6d41\uff08OuputStream\uff09<\/strong>\uff1a\u4ece\u5185\u5b58\u8bfb\u51fa\u5230\u6587\u4ef6\u3002\u53ea\u80fd\u8fdb\u884c\u5199\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u6ce8\uff1a\u8f93\u51fa\u6d41\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u521b\u5efa\u6587\u4ef6\uff0c\u800c\u8f93\u5165\u6d41\u4e0d\u4f1a\u3002<\/li>\n<\/ul>\n\n\n\n<p><mark>\u6309\u5904\u7406\u6570\u636e\u5355\u4f4d<\/mark>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5b57\u8282\u6d41<\/strong>\uff1a\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff0c\u6bcf\u6b21\u6b21\u8bfb\u5165\u6216\u8bfb\u51fa\u662f8\u4f4d\u6570\u636e\u3002\u53ef\u4ee5\u8bfb\u4efb\u4f55\u7c7b\u578b\u6570\u636e\uff0c\u56fe\u7247\u3001\u6587\u4ef6\u3001\u97f3\u4e50\u89c6\u9891\u7b49\u3002 (Java\u4ee3\u7801\u63a5\u6536\u6570\u636e\u53ea\u80fd\u4e3abyte\u6570\u7ec4)<\/li>\n\n\n\n<li><strong>\u5b57\u7b26\u6d41<\/strong>\uff1a\u4ee5\u5b57\u7b26\u4e3a\u5355\u4f4d\uff0c\u6bcf\u6b21\u8bfb\u5165\u6216\u8bfb\u51fa\u662f<mark>16\u4f4d<\/mark>\u6570\u636e\u3002\u5176\u53ea\u80fd\u8bfb\u53d6\u5b57\u7b26\u7c7b\u578b\u6570\u636e\u3002 (Java\u4ee3\u7801\u63a5\u6536\u6570\u636e\u4e3a\u4e00\u822c\u4e3achar\u6570\u7ec4\uff0c\u4e5f\u53ef\u4ee5\u662f\u522b\u7684)<\/li>\n<\/ul>\n\n\n\n<p><mark>\u6309\u89d2\u8272<\/mark>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8282\u70b9\u6d41<\/strong>\uff1a\u76f4\u63a5\u4e0e\u6570\u636e\u6e90\u76f8\u8fde\uff0c\u8bfb\u5165\u6216\u8bfb\u51fa\u3002<\/li>\n\n\n\n<li><strong>\u5904\u7406\u6d41<\/strong>\uff1a\u4e5f\u53eb<strong>\u5305\u88c5\u6d41<\/strong>\uff0c\u662f\u5bf9\u4e00\u4e2a\u5bf9\u4e8e\u5df2\u5b58\u5728\u7684\u6d41\u7684\u8fde\u63a5\u8fdb\u884c\u5c01\u88c5\uff0c\u901a\u8fc7\u6240\u5c01\u88c5\u7684\u6d41\u7684\u529f\u80fd\u8c03\u7528\u5b9e\u73b0\u6570\u636e\u8bfb\u5199\u3002\u5982\u6dfb\u52a0\u4e2aBuffering\u7f13\u51b2\u533a\u3002\uff08\u610f\u601d\u5c31\u662f\u6709\u4e2a\u7f13\u5b58\u533a\uff0c\u7b49\u4e8e\u8f6f\u4ef6\u548cmysql\u4e2d\u7684redis\uff09<\/li>\n\n\n\n<li>\u6ce8\u610f\uff1a\u4e3a\u4ec0\u4e48\u8981\u6709\u5904\u7406\u6d41\uff1f\u4e3b\u8981\u4f5c\u7528\u662f\u5728\u8bfb\u5165\u6216\u5199\u51fa\u65f6\uff0c\u5bf9\u6570\u636e\u8fdb\u884c\u7f13\u5b58\uff0c\u4ee5\u51cf\u5c11I\/O\u7684\u6b21\u6570\uff0c<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720104343514-cR3kkUx-1024x307.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"307\" data-original=\"https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720104343514-cR3kkUx-1024x307.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1453\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720103443059-63v0xXV2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"952\" height=\"385\" data-original=\"https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720103443059-63v0xXV2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1454\"  sizes=\"auto, (max-width: 952px) 100vw, 952px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720103453874-BvxJeE-t.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"856\" height=\"332\" data-original=\"https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720103453874-BvxJeE-t.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1455\"  sizes=\"auto, (max-width: 856px) 100vw, 856px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_10\u30015\u79cdio\u6a21\u578b\"><a href=\"#_10\u30015\u79cdio\u6a21\u578b\">10\u30015\u79cdIO\u6a21\u578b<\/a><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"_1\u3001\u963b\u585ebio-blocking-io\"><a href=\"#_1\u3001\u963b\u585ebio-blocking-io\">1\u3001\u963b\u585eBIO(Blocking IO)<\/a><\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4f8b\uff1aA\u62ff\u7740\u4e00\u652f\u9c7c\u7aff\u5728\u6cb3\u8fb9\u9493\u9c7c\uff0c\u5e76\u4e14\u4e00\u76f4\u5728\u9c7c\u7aff\u524d\u7b49\uff0c\u5728\u7b49\u7684\u65f6\u5019\u4e0d\u505a\u5176\u4ed6\u7684\u4e8b\u60c5\uff0c\u5341\u5206\u4e13\u5fc3\u3002\u53ea\u6709\u9c7c\u4e0a\u94a9\u7684\u65f6\uff0c\u624d\u7ed3\u675f\u6389\u7b49\u7684\u52a8\u4f5c\uff0c\u628a\u9c7c\u9493\u4e0a\u6765\u3002<br>\u5728\u5185\u6838\u5c06\u6570\u636e\u51c6\u5907\u597d\u4e4b\u524d\uff0c\u7cfb\u7edf\u8c03\u7528\u4f1a\u4e00\u76f4\u7b49\u5f85\u6240\u6709\u7684\u5957\u63a5\u5b57\uff0c\u9ed8\u8ba4\u7684\u662f\u963b\u585e\u65b9\u5f0f\u3002<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720110909957-AgGnRY2g-1024x410.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"410\" data-original=\"https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720110909957-AgGnRY2g-1024x410.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1456\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"_2\u3001\u975e\u963b\u585enio-noblocking-io\"><a href=\"#_2\u3001\u975e\u963b\u585enio-noblocking-io\">2\u3001\u975e\u963b\u585eNIO(NoBlocking IO)<\/a><\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>B\u4e5f\u5728\u6cb3\u8fb9\u9493\u9c7c\uff0c\u4f46\u662fB\u4e0d\u60f3\u5c06\u81ea\u5df1\u7684\u6240\u6709\u65f6\u95f4\u90fd\u82b1\u8d39\u5728\u9493\u9c7c\u4e0a\uff0c\u5728\u7b49\u9c7c\u4e0a\u94a9\u8fd9\u4e2a\u65f6\u95f4\u6bb5\u4e2d\uff0cB\u4e5f\u5728\u505a\u5176\u4ed6\u7684\u4e8b\u60c5\uff08\u4e00\u4f1a\u770b\u770b\u4e66\uff0c\u4e00\u4f1a\u8bfb\u8bfb\u62a5\u7eb8\uff0c\u4e00\u4f1a\u53c8\u53bb\u770b\u5176\u4ed6\u4eba\u7684\u9493\u9c7c\u7b49\uff09\uff0c\u4f46B\u5728\u505a\u8fd9\u4e9b\u4e8b\u60c5\u7684\u65f6\u5019\uff0c\u6bcf\u9694\u4e00\u4e2a\u56fa\u5b9a\u7684\u65f6\u95f4\u68c0\u67e5\u9c7c\u662f\u5426\u4e0a\u94a9\u3002\u4e00\u65e6\u68c0\u67e5\u5230\u6709\u9c7c\u4e0a\u94a9\uff0c\u5c31\u505c\u4e0b\u624b\u4e2d\u7684\u4e8b\u60c5\uff0c\u628a\u9c7c\u9493\u4e0a\u6765\u3002 <mark>B\u5728\u68c0\u67e5\u9c7c\u7aff\u662f\u5426\u6709\u9c7c\uff0c\u662f\u4e00\u4e2a\u8f6e\u8be2\u7684\u8fc7\u7a0b<\/mark>\u3002<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720111104688-CmcBRCWv-1024x565.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"565\" data-original=\"https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720111104688-CmcBRCWv-1024x565.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1457\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"_3\u3001\u5f02\u6b65aio-asynchronous-io\"><a href=\"#_3\u3001\u5f02\u6b65aio-asynchronous-io\">3\u3001\u5f02\u6b65AIO(asynchronous IO)<\/a><\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>C\u4e5f\u60f3\u9493\u9c7c\uff0c\u4f46C\u6709\u4e8b\u60c5\uff0c\u4e8e\u662f\u4ed6\u96c7\u6765\u4e86D\u3001E\u3001F\uff0c\u8ba9\u4ed6\u4eec\u5e2e\u4ed6\u7b49\u5f85\u9c7c\u4e0a\u94a9\uff0c\u4e00\u65e6\u6709\u9c7c\u4e0a\u94a9\uff0c\u5c31\u6253\u7535\u8bdd\u7ed9C\uff0cC\u5c31\u4f1a\u5c06\u9c7c\u9493\u4e0a\u53bb<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720111202884-BR_vZ_sq-1-1024x539.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"539\" data-original=\"https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720111202884-BR_vZ_sq-1-1024x539.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1464\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u5f53\u5e94\u7528\u7a0b\u5e8f\u8bf7\u6c42\u6570\u636e\u65f6\uff0c\u5185\u6838\u4e00\u65b9\u9762\u53bb\u53d6\u6570\u636e\u62a5\u5185\u5bb9\u8fd4\u56de\uff0c\u53e6\u4e00\u65b9\u9762\u5c06\u7a0b\u5e8f\u63a7\u5236\u6743\u8fd8\u7ed9\u5e94\u7528\u8fdb\u7a0b\uff0c\u5e94\u7528\u8fdb\u7a0b\u7ee7\u7eed\u5904\u7406\u5176\u4ed6\u4e8b\u60c5\uff0c\u662f\u4e00\u79cd\u975e\u963b\u585e\u7684\u72b6\u6001\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"_4\u3001\u4fe1\u53f7\u9a71\u52a8io-signal-blocking-io\"><a href=\"#_4\u3001\u4fe1\u53f7\u9a71\u52a8io-signal-blocking-io\">4\u3001\u4fe1\u53f7\u9a71\u52a8IO(signal blocking IO)<\/a><\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>G\u4e5f\u5728\u6cb3\u8fb9\u9493\u9c7c\uff0c\u4f46\u4e0eA\u3001B\u3001C\u4e0d\u540c\u7684\u662f\uff0cG\u6bd4\u8f83\u806a\u660e\uff0c\u4ed6\u7ed9\u9c7c\u7aff\u4e0a\u6302\u4e00\u4e2a\u94c3\u94db\uff0c\u5f53\u6709\u9c7c\u4e0a\u94a9\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a\u94c3\u94db\u5c31\u4f1a\u88ab\u78b0\u54cd\uff0cG\u5c31\u4f1a\u5c06\u9c7c\u9493\u4e0a\u6765\u3002<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720111317056-CUpQfXa5-1024x556.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"556\" data-original=\"https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720111317056-CUpQfXa5-1024x556.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1460\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u4fe1\u53f7\u9a71\u52a8IO\u6a21\u578b\uff0c\u5e94\u7528\u8fdb\u7a0b\u544a\u8bc9\u5185\u6838\uff1a\u5f53\u6570\u636e\u62a5\u51c6\u5907\u597d\u7684\u65f6\u5019\uff0c\u7ed9\u6211\u53d1\u9001\u4e00\u4e2a\u4fe1\u53f7\uff0c\u5bf9SIGIO\u4fe1\u53f7\u8fdb\u884c\u6355\u6349\uff0c\u5e76\u4e14\u8c03\u7528\u6211\u7684\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u6765\u83b7\u53d6\u6570\u636e\u62a5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"_5\u3001io\u591a\u8def\u8f6c\u63a5-io-multiplexing\"><a href=\"#_5\u3001io\u591a\u8def\u8f6c\u63a5-io-multiplexing\">5\u3001IO\u591a\u8def\u8f6c\u63a5(IO multiplexing)<\/a><\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>H\u540c\u6837\u4e5f\u5728\u6cb3\u8fb9\u9493\u9c7c\uff0c\u4f46\u662fH\u751f\u6d3b\u6c34\u5e73\u6bd4\u8f83\u597d\uff0cH\u62ff\u4e86\u5f88\u591a\u7684\u9c7c\u7aff\uff0c\u4e00\u6b21\u6027\u6709\u5f88\u591a\u9c7c\u7aff\u5728\u7b49\uff0cH\u4e0d\u65ad\u7684\u67e5\u770b\u6bcf\u4e2a\u9c7c\u7aff\u662f\u5426\u6709\u9c7c\u4e0a\u94a9\u3002\u589e\u52a0\u4e86\u6548\u7387\uff0c\u51cf\u5c11\u4e86\u7b49\u5f85\u7684\u65f6\u95f4\u3002<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720111433853-r0aMdL8J-1-1024x508.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"508\" data-original=\"https:\/\/zero-zl.cn\/wp-content\/uploads\/2025\/08\/image-20210720111433853-r0aMdL8J-1-1024x508.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1462\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>IO\u591a\u8def\u8f6c\u63a5\u662f\u591a\u4e86\u4e00\u4e2aselect\u51fd\u6570\uff0cselect\u51fd\u6570\u6709\u4e00\u4e2a\u53c2\u6570\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\uff0c\u5bf9\u8fd9\u4e9b\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u5faa\u73af\u76d1\u542c\uff0c\u5f53\u67d0\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u5c31\u7eea\u65f6\uff0c\u5c31\u5bf9\u8fd9\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u5904\u7406\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>IO\u591a\u8def\u8f6c\u63a5\u662f\u5c5e\u4e8e\u963b\u585eIO<\/strong>\uff0c\u4f46\u53ef\u4ee5\u5bf9\u591a\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u963b\u585e\u76d1\u542c\uff0c\u6240\u4ee5\u6548\u7387\u8f83\u963b\u585eIO\u7684\u9ad8\u3002<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_11\u3001\u4ec0\u4e48\u53eb\u5bf9\u8c61\u5e8f\u5217\u5316-\u4ec0\u4e48\u662f\u53cd\u5e8f\u5217\u5316-\u5b9e\u73b0\u5bf9\u8c61\u5e8f\u5217\u5316\u9700\u8981\u505a\u54ea\u4e9b\u5de5\u4f5c\"><a href=\"#_11\u3001\u4ec0\u4e48\u53eb\u5bf9\u8c61\u5e8f\u5217\u5316-\u4ec0\u4e48\u662f\u53cd\u5e8f\u5217\u5316-\u5b9e\u73b0\u5bf9\u8c61\u5e8f\u5217\u5316\u9700\u8981\u505a\u54ea\u4e9b\u5de5\u4f5c\">11\u3001\u4ec0\u4e48\u53eb\u5bf9\u8c61\u5e8f\u5217\u5316\uff1f\u4ec0\u4e48\u662f\u53cd\u5e8f\u5217\u5316\uff1f\u5b9e\u73b0\u5bf9\u8c61\u5e8f\u5217\u5316\u9700\u8981\u505a\u54ea\u4e9b\u5de5\u4f5c\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5bf9\u8c61\u5e8f\u5217\u5316\uff1a\u5c06\u5bf9\u8c61\u4ee5\u4e8c\u8fdb\u5236\u7684\u5f62\u5f0f\u4fdd\u5b58\u5728\u786c\u76d8\u4e0a<br>\u53cd\u5e8f\u5217\u5316\uff1a\u5c06\u4e8c\u8fdb\u5236\u7684\u6587\u4ef6\u8f6c\u5316\u4e3a\u5bf9\u8c61\u8bfb\u53d6<br>\u51c6\u5907\u5de5\u4f5c\uff1a\u5b9e\u73b0serializable\u63a5\u53e3\uff0c\u4e0d\u60f3\u8ba9\u5b57\u6bb5\u653e\u5728\u786c\u76d8\u4e0a\u5c31\u52a0transient<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_12\u3001\u5728\u5b9e\u73b0\u5e8f\u5217\u5316\u63a5\u53e3\u662f\u65f6\u5019\u4e00\u822c\u8981\u751f\u6210\u4e00\u4e2aserialversionuid\u5b57\u6bb5-\u5b83\u53eb\u505a\u4ec0\u4e48\"><a href=\"#_12\u3001\u5728\u5b9e\u73b0\u5e8f\u5217\u5316\u63a5\u53e3\u662f\u65f6\u5019\u4e00\u822c\u8981\u751f\u6210\u4e00\u4e2aserialversionuid\u5b57\u6bb5-\u5b83\u53eb\u505a\u4ec0\u4e48\">12\u3001\u5728\u5b9e\u73b0\u5e8f\u5217\u5316\u63a5\u53e3\u662f\u65f6\u5019\u4e00\u822c\u8981\u751f\u6210\u4e00\u4e2aserialVersionUID\u5b57\u6bb5,\u5b83\u53eb\u505a\u4ec0\u4e48,<\/a><\/h2>\n\n\n\n<p>\u4e00\u822c\u6709\u4ec0\u4e48\u7528<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5982\u679c\u7528\u6237\u6ca1\u6709\u81ea\u5df1\u58f0\u660e\u4e00\u4e2aserialVersionUID,\u63a5\u53e3\u4f1a\u9ed8\u8ba4\u751f\u6210\u4e00\u4e2aserialVersionUID\uff0c\u4f46\u662f\u5f3a\u70c8\u5efa\u8bae\u7528\u6237\u81ea\u5b9a\u4e49\u4e00\u4e2aserialVersionUID,\u56e0\u4e3a\u9ed8\u8ba4\u7684serialVersinUID\u5bf9\u4e8eclass\u7684\u7ec6\u8282\u975e\u5e38\u654f\u611f\uff0c\u53cd\u5e8f\u5217\u5316\u65f6\u53ef\u80fd\u4f1a\u5bfc\u81f4InvalidClassException\u8fd9\u4e2a\u5f02\u5e38\u3002<br>\u6bd4\u5982\u8bf4\u5148\u8fdb\u884c\u5e8f\u5217\u5316\uff0c\u7136\u540e\u5728\u53cd\u5e8f\u5217\u5316\u4e4b\u524d\u4fee\u6539\u4e86\u7c7b\uff0c\u90a3\u4e48\u5c31\u4f1a\u62a5\u9519\u3002\u56e0\u4e3a\u4fee\u6539\u4e86\u7c7b\uff0c\u5bf9\u5e94\u7684SerialversionUID\u4e5f\u53d8\u5316\u4e86\uff0c\u800c\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u5c31\u662f\u901a\u8fc7\u5bf9\u6bd4\u5176SerialversionUID\u6765\u8fdb\u884c\u7684\uff0c\u4e00\u65e6SerialversionUID\u4e0d\u5339\u914d\uff0c\u53cd\u5e8f\u5217\u5316\u5c31\u65e0\u6cd5\u6210\u529f\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_13\u3001\u600e\u4e48\u751f\u6210serialversionuid\"><a href=\"#_13\u3001\u600e\u4e48\u751f\u6210serialversionuid\">13\u3001\u600e\u4e48\u751f\u6210SerialversionUID\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u53ef\u5e8f\u5217\u5316\u7c7b\u53ef\u4ee5\u901a\u8fc7\u58f0\u660e\u540d\u4e3a &#8220;serialVersionUID&#8221; \u7684\u5b57\u6bb5\uff08\u8be5\u5b57\u6bb5\u5fc5\u987b\u662f\u9759\u6001 (static)\u3001\u6700\u7ec8(final) \u7684 long \u578b\u5b57\u6bb5\uff09\u663e\u5f0f\u58f0\u660e\u5176\u81ea\u5df1\u7684 serialVersionUID<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>private static final long serialVersionUID = 1L;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_14\u3001bufferedreader\u5c5e\u4e8e\u54ea\u79cd\u6d41-\u5b83\u4e3b\u8981\u662f\u7528\u6765\u505a\u4ec0\u4e48\u7684-\u5b83\u91cc\u9762\u6709\u90a3\u4e9b\u7ecf\u5178\u7684\u65b9\u6cd5\"><a href=\"#_14\u3001bufferedreader\u5c5e\u4e8e\u54ea\u79cd\u6d41-\u5b83\u4e3b\u8981\u662f\u7528\u6765\u505a\u4ec0\u4e48\u7684-\u5b83\u91cc\u9762\u6709\u90a3\u4e9b\u7ecf\u5178\u7684\u65b9\u6cd5\">14\u3001BufferedReader\u5c5e\u4e8e\u54ea\u79cd\u6d41,\u5b83\u4e3b\u8981\u662f\u7528\u6765\u505a\u4ec0\u4e48\u7684,\u5b83\u91cc\u9762\u6709\u90a3\u4e9b\u7ecf\u5178\u7684\u65b9\u6cd5<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5c5e\u4e8e\u5904\u7406\u6d41\u4e2d\u7684\u7f13\u51b2\u6d41\uff0c\u53ef\u4ee5\u5c06\u8bfb\u53d6\u7684\u5185\u5bb9\u5b58\u5728\u5185\u5b58\u91cc\u9762\uff0c\u6709readLine\uff08\uff09\u65b9\u6cd5<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_15\u3001java\u4e2d\u6d41\u7c7b\u7684\u8d85\u7c7b\u4e3b\u8981\u6709\u90a3\u4e9b\"><a href=\"#_15\u3001java\u4e2d\u6d41\u7c7b\u7684\u8d85\u7c7b\u4e3b\u8981\u6709\u90a3\u4e9b\">15\u3001Java\u4e2d\u6d41\u7c7b\u7684\u8d85\u7c7b\u4e3b\u8981\u6709\u90a3\u4e9b\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>\u8d85\u7c7b\u4ee3\u8868\u9876\u7aef\u7684\u7236\u7c7b\uff08\u90fd\u662f\u62bd\u8c61\u7c7b\uff09<\/li>\n\n\n\n<li>java.io.InputStream<\/li>\n\n\n\n<li>java.io.OutputStream<\/li>\n\n\n\n<li>java.io.Reader<\/li>\n\n\n\n<li>java.io.Writer<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u4ec0\u4e48\u662f\u6bd4\u7279(Bit),\u4ec0\u4e48\u662f\u5b57\u8282(Byte),\u4ec0\u4e48\u662f\u5b57\u7b26(Char),\u5b83\u4eec\u957f\u5ea6\u662f\u591a\u5c11,\u5404\u6709\u4ec0\u4e48\u533a\u522b\uff1f Bi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":234,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103,104],"tags":[],"class_list":["post-1392","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/posts\/1392","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1392"}],"version-history":[{"count":3,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/posts\/1392\/revisions"}],"predecessor-version":[{"id":1465,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/posts\/1392\/revisions\/1465"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/media\/234"}],"wp:attachment":[{"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}