{"id":47046,"date":"2025-07-30T05:47:30","date_gmt":"2025-07-29T21:47:30","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/47046.html"},"modified":"2025-07-30T05:47:30","modified_gmt":"2025-07-29T21:47:30","slug":"rust-%e9%a1%b9%e7%9b%ae%e5%ae%9e%e6%88%98%ef%bc%9a%e5%8d%95%e7%ba%bf%e7%a8%8b-web-%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/47046.html","title":{"rendered":"Rust \u9879\u76ee\u5b9e\u6218\uff1a\u5355\u7ebf\u7a0b Web \u670d\u52a1\u5668"},"content":{"rendered":"<\/p>\n<h4>Rust \u9879\u76ee\u5b9e\u6218&#xff1a;\u5355\u7ebf\u7a0b Web \u670d\u52a1\u5668<\/h4>\n<ul>\n<li>Rust \u9879\u76ee\u5b9e\u6218&#xff1a;\u5355\u7ebf\u7a0b Web \u670d\u52a1\u5668<\/li>\n<li>\n<ul>\n<li>\u76d1\u542c TCP \u8fde\u63a5<\/li>\n<li>\u9605\u8bfb\u8bf7\u6c42<\/li>\n<li>\u4ed4\u7ec6\u770b\u770b HTTP \u8bf7\u6c42<\/li>\n<li>\u7f16\u5199\u54cd\u5e94<\/li>\n<li>\u8fd4\u56de\u771f\u6b63\u7684 HTML<\/li>\n<li>\u9a8c\u8bc1\u8bf7\u6c42\u5e76\u9009\u62e9\u6027\u5730\u54cd\u5e94<\/li>\n<li>\u4ee3\u7801\u91cd\u6784<\/li>\n<li>\u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Rust \u9879\u76ee\u5b9e\u6218&#xff1a;\u5355\u7ebf\u7a0b Web \u670d\u52a1\u5668<\/h2>\n<p>Web \u670d\u52a1\u5668\u4e2d\u6d89\u53ca\u7684\u4e24\u4e2a\u4e3b\u8981\u534f\u8bae\u662f\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae&#xff08;HTTP&#xff09;\u548c\u4f20\u8f93\u63a7\u5236\u534f\u8bae&#xff08;TCP&#xff09;\u3002\u8fd9\u4e24\u79cd\u534f\u8bae\u90fd\u662f\u8bf7\u6c42-\u54cd\u5e94\u534f\u8bae&#xff0c;\u8fd9\u610f\u5473\u7740\u5ba2\u6237\u7aef\u53d1\u8d77\u8bf7\u6c42&#xff0c;\u670d\u52a1\u5668\u4fa6\u542c\u8bf7\u6c42\u5e76\u5411\u5ba2\u6237\u7aef\u63d0\u4f9b\u54cd\u5e94\u3002\u8fd9\u4e9b\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u5185\u5bb9\u7531\u534f\u8bae\u5b9a\u4e49\u3002<\/p>\n<p>TCP \u662f\u8f83\u4f4e\u7ea7\u522b\u7684\u534f\u8bae&#xff0c;\u5b83\u63cf\u8ff0\u4e86\u4fe1\u606f\u5982\u4f55\u4ece\u4e00\u53f0\u670d\u52a1\u5668\u4f20\u9012\u5230\u53e6\u4e00\u53f0\u670d\u52a1\u5668\u7684\u7ec6\u8282&#xff0c;\u4f46\u6ca1\u6709\u6307\u5b9a\u8be5\u4fe1\u606f\u662f\u4ec0\u4e48\u3002HTTP \u901a\u8fc7\u5b9a\u4e49\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u5185\u5bb9\u5efa\u7acb\u5728 TCP \u4e4b\u4e0a\u3002\u5728\u6280\u672f\u4e0a\u53ef\u4ee5\u5c06 HTTP \u4e0e\u5176\u4ed6\u534f\u8bae\u4e00\u8d77\u4f7f\u7528&#xff0c;\u4f46\u5728\u7edd\u5927\u591a\u6570\u60c5\u51b5\u4e0b&#xff0c;HTTP \u901a\u8fc7 TCP \u53d1\u9001\u6570\u636e\u3002<\/p>\n<p>\u6211\u4eec\u5c06\u5904\u7406 TCP \u548c HTTP \u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u539f\u59cb\u5b57\u8282\u3002<\/p>\n<h3>\u76d1\u542c TCP \u8fde\u63a5<\/h3>\n<p>\u6807\u51c6\u5e93\u63d0\u4f9b\u4e86\u4e00\u4e2a std::net \u6a21\u5757&#xff0c;\u53ef\u4ee5\u8ba9\u6211\u4eec\u76d1\u542c TCP \u8fde\u63a5\u3002<\/p>\n<p>\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\u5c06\u5728\u672c\u5730\u5730\u5740 127.0.0.1:7878 \u4e0a\u76d1\u542c\u4f20\u5165\u7684 TCP \u6d41\u3002\u5f53\u5b83\u6536\u5230\u4e00\u4e2a\u4f20\u5165\u6d41\u65f6&#xff0c;\u5b83\u5c06\u6253\u5370 Connection established&#xff01;<\/p>\n<p><span class=\"token keyword\">use<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>net<span class=\"token punctuation\">::<\/span><\/span><span class=\"token class-name\">TcpListener<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> listener <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">TcpListener<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;127.0.0.1:7878&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> stream <span class=\"token keyword\">in<\/span> listener<span class=\"token punctuation\">.<\/span><span class=\"token function\">incoming<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> stream <span class=\"token operator\">&#061;<\/span> stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token macro property\">println!<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Connection established!&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4f7f\u7528 TcpListener&#xff0c;\u6211\u4eec\u53ef\u4ee5\u76d1\u542c\u5730\u5740\u4e3a 127.0.0.1:7878 \u7684 TCP \u8fde\u63a5\u3002\u5728\u5730\u5740\u4e2d&#xff0c;\u5192\u53f7\u4e4b\u524d\u7684\u90e8\u5206\u662f\u4ee3\u8868\u672c\u5730\u5730\u5740&#xff0c;7878 \u662f\u7aef\u53e3\u3002<\/p>\n<p>bind \u51fd\u6570\u7c7b\u4f3c\u4e8e new \u51fd\u6570&#xff0c;\u4f5c\u7528\u662f\u76d1\u542c\u4e00\u4e2a\u7aef\u53e3&#xff0c;\u5b83\u8fd4\u56de Result&lt;T, E&gt;&#xff0c;\u8fd9\u8868\u660e\u7ed1\u5b9a\u6709\u53ef\u80fd\u5931\u8d25\u3002\u82e5\u6210\u529f&#xff0c;\u5219\u5f97\u5230\u4e00\u4e2a\u65b0\u7684 TcpListener \u5b9e\u4f8b&#xff1b;\u82e5\u5931\u8d25&#xff0c;\u6211\u4eec\u4f7f\u7528 unwrap \u6765\u505c\u6b62\u7a0b\u5e8f\u3002<\/p>\n<p>TcpListener \u4e0a\u7684 incoming \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668&#xff0c;\u8be5\u8fed\u4ee3\u5668\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e00\u4e2a TcpStream \u7c7b\u578b\u7684\u6d41\u3002\u5355\u4e2a\u6d41\u8868\u793a\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u8fde\u63a5&#xff0c;\u5728\u8be5\u8fc7\u7a0b\u4e2d&#xff0c;\u5ba2\u6237\u673a\u8fde\u63a5\u5230\u670d\u52a1\u5668&#xff0c;\u670d\u52a1\u5668\u751f\u6210\u54cd\u5e94&#xff0c;\u670d\u52a1\u5668\u5173\u95ed\u8fde\u63a5\u3002\u56e0\u6b64&#xff0c;\u6211\u4eec\u5c06\u4ece TcpStream \u4e2d\u8bfb\u53d6\u4ee5\u67e5\u770b\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u5185\u5bb9&#xff0c;\u7136\u540e\u5c06\u54cd\u5e94\u5199\u5165\u6d41\u4ee5\u5c06\u6570\u636e\u53d1\u9001\u56de\u5ba2\u6237\u7aef\u3002\u603b\u7684\u6765\u8bf4&#xff0c;\u8fd9\u4e2a for \u5faa\u73af\u5c06\u4f9d\u6b21\u5904\u7406\u6bcf\u4e2a\u8fde\u63a5&#xff0c;\u5e76\u4ea7\u751f\u4e00\u7cfb\u5217\u6d41\u4f9b\u6211\u4eec\u5904\u7406\u3002<\/p>\n<p>\u76ee\u524d&#xff0c;\u6211\u4eec\u5bf9\u6d41\u7684\u5904\u7406\u5305\u62ec&#xff1a;\u5982\u679c\u6d41\u6709\u4efb\u4f55\u9519\u8bef&#xff0c;\u8c03\u7528 unwrap \u6765\u7ec8\u6b62\u7a0b\u5e8f&#xff1b;\u5982\u679c\u6ca1\u6709\u4efb\u4f55\u9519\u8bef&#xff0c;\u7a0b\u5e8f\u5c06\u6253\u5370\u4e00\u6761\u6d88\u606f\u3002<\/p>\n<p>\u5728\u7ec8\u7aef\u4e2d\u8c03\u7528 cargo run&#xff0c;\u7136\u540e\u5728\u6d4f\u89c8\u5668\u4e2d\u52a0\u8f7d 127.0.0.1:7878\u3002\u6d4f\u89c8\u5668\u5e94\u8be5\u663e\u793a\u4e00\u4e2a\u9519\u8bef\u6d88\u606f&#xff0c;\u56e0\u4e3a\u670d\u52a1\u5668\u5f53\u524d\u6ca1\u6709\u53d1\u56de\u4efb\u4f55\u6570\u636e\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729214728-68894170770ce.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u4f46\u662f\u7ec8\u7aef\u4e0a\u6709\u6d4f\u89c8\u5668\u8fde\u63a5\u5230\u670d\u52a1\u5668\u65f6\u6253\u5370\u7684\u51e0\u6761\u6d88\u606f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729214728-68894170aa4f0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u9605\u8bfb\u8bf7\u6c42<\/h3>\n<p>\u5b9e\u73b0\u4e00\u4e2a handle_connection \u51fd\u6570&#xff0c;\u4ece TCP \u6d41\u4e2d\u8bfb\u53d6\u6570\u636e\u5e76\u6253\u5370\u51fa\u6765&#xff0c;\u8fd9\u6837\u6211\u4eec\u5c31\u53ef\u4ee5\u770b\u5230\u4ece\u6d4f\u89c8\u5668\u53d1\u9001\u7684\u6570\u636e\u3002<\/p>\n<p><span class=\"token keyword\">use<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>net<span class=\"token punctuation\">::<\/span><\/span><span class=\"token punctuation\">{<\/span><span class=\"token class-name\">TcpListener<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">use<\/span> <span class=\"token namespace\">std<span class=\"token punctuation\">::<\/span>io<span class=\"token punctuation\">::<\/span><\/span><span class=\"token punctuation\">{<\/span><span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token namespace\">prelude<span class=\"token punctuation\">::<\/span><\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> buf_reader <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> http_request<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Vec<\/span><span class=\"token operator\">&lt;<\/span>_<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">&#061;<\/span> buf_reader<br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">lines<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>result<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> result<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">take_while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>line<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> <span class=\"token operator\">!<\/span>line<span class=\"token punctuation\">.<\/span><span class=\"token function\">is_empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">collect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token macro property\">println!<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Request: {http_request:#?}&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> listener <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">TcpListener<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;127.0.0.1:7878&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> stream <span class=\"token keyword\">in<\/span> listener<span class=\"token punctuation\">.<\/span><span class=\"token function\">incoming<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> stream <span class=\"token operator\">&#061;<\/span> stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span>stream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5728 handle_connection \u51fd\u6570\u4e2d&#xff0c;\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684 BufReader \u5b9e\u4f8b&#xff0c;\u8be5\u5b9e\u4f8b\u5305\u88c5\u4e86\u5bf9\u6d41\u7684\u5f15\u7528\u3002BufReader \u901a\u8fc7\u4e3a\u6211\u4eec\u7ba1\u7406\u5bf9 std::io::Read trait \u65b9\u6cd5\u7684\u8c03\u7528\u6765\u589e\u52a0\u7f13\u51b2\u3002<\/p>\n<p>\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a http_request \u7684\u53d8\u91cf\u6765\u6536\u96c6\u6d4f\u89c8\u5668\u53d1\u9001\u5230\u670d\u52a1\u5668\u7684\u8bf7\u6c42\u884c\u3002\u6211\u4eec\u901a\u8fc7\u6dfb\u52a0 Vec&lt;_&gt; \u7c7b\u578b\u6ce8\u91ca\u6765\u8868\u793a\u5e0c\u671b\u5c06\u8fd9\u4e9b\u884c\u6536\u96c6\u5230\u4e00\u4e2a\u5411\u91cf\u4e2d\u3002<\/p>\n<p>BufReader \u5b9e\u73b0\u4e86 std::io::BufRead trait&#xff0c;\u5b83\u63d0\u4f9b\u4e86 lines \u65b9\u6cd5\u3002lines \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a Result&lt;String, std::io::Error&gt; \u7684\u8fed\u4ee3\u5668&#xff0c;\u65b9\u6cd5\u662f\u5728\u770b\u5230\u6362\u884c\u7b26\u65f6\u62c6\u5206\u6570\u636e\u6d41\u3002\u4e3a\u4e86\u83b7\u5f97\u6bcf\u4e2a String&#xff0c;\u6211\u4eec\u4f7f\u7528 map \u65b9\u6cd5\u5c55\u5f00\u6bcf\u4e2a Result\u3002<\/p>\n<p>\u6d4f\u89c8\u5668\u901a\u8fc7\u5728\u4e00\u884c\u4e2d\u53d1\u9001\u4e24\u4e2a\u6362\u884c\u7b26\u6765\u8868\u793a HTTP \u8bf7\u6c42\u7684\u7ed3\u675f&#xff0c;\u56e0\u6b64\u4e3a\u4e86\u4ece\u6d41\u4e2d\u83b7\u5f97\u4e00\u4e2a\u8bf7\u6c42&#xff0c;\u6211\u4eec\u4e00\u76f4\u8bfb\u53d6\u884c&#xff0c;\u76f4\u5230\u5f97\u5230\u7a7a\u5b57\u7b26\u4e32\u7684\u884c\u3002\u4e00\u65e6\u6211\u4eec\u5c06\u8fd9\u4e9b\u884c\u6536\u96c6\u5230 vector \u4e2d&#xff0c;\u6211\u4eec\u5c06\u4f7f\u7528 #? \u8c03\u8bd5\u683c\u5f0f\u5c06\u5b83\u4eec\u6253\u5370\u51fa\u6765&#xff0c;\u8fd9\u6837\u6211\u4eec\u5c31\u53ef\u4ee5\u67e5\u770b Web \u6d4f\u89c8\u5668\u53d1\u9001\u7ed9\u670d\u52a1\u5668\u7684\u6307\u4ee4\u3002<\/p>\n<p>\u8fd0\u884c\u7a0b\u5e8f\u5e76\u518d\u6b21\u5728 Web \u6d4f\u89c8\u5668\u4e2d\u53d1\u51fa\u8bf7\u6c42\u3002\u6211\u4eec\u4ecd\u7136\u4f1a\u5728\u6d4f\u89c8\u5668\u4e2d\u5f97\u5230\u4e00\u4e2a\u9519\u8bef\u9875\u9762&#xff0c;\u4f46\u662f\u6211\u4eec\u7684\u7a0b\u5e8f\u5728\u7ec8\u7aef\u4e2d\u7684\u8f93\u51fa\u73b0\u5728\u770b\u8d77\u6765\u50cf\u8fd9\u6837&#xff1a;<\/p>\n<p>Request: [<br \/>\n    &#034;GET \/ HTTP\/1.1&#034;,<br \/>\n    &#034;Host: 127.0.0.1:7878&#034;,<br \/>\n    &#034;Connection: keep-alive&#034;,<br \/>\n    &#034;sec-ch-ua: \\\\&#034;Google Chrome\\\\&#034;;v&#061;\\\\&#034;137\\\\&#034;, \\\\&#034;Chromium\\\\&#034;;v&#061;\\\\&#034;137\\\\&#034;, \\\\&#034;Not\/A)Brand\\\\&#034;;v&#061;\\\\&#034;24\\\\&#034;&#034;,<br \/>\n    &#034;sec-ch-ua-mobile: ?0&#034;,<br \/>\n    &#034;sec-ch-ua-platform: \\\\&#034;Windows\\\\&#034;&#034;,<br \/>\n    &#034;Upgrade-Insecure-Requests: 1&#034;,<br \/>\n    &#034;User-Agent: Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/137.0.0.0 Safari\/537.36&#034;,<br \/>\n    &#034;Accept: text\/html,application\/xhtml&#043;xml,application\/xml;q&#061;0.9,image\/avif,image\/webp,image\/apng,*\/*;q&#061;0.8,application\/signed-exchange;v&#061;b3;q&#061;0.7&#034;,<br \/>\n    &#034;Sec-Fetch-Site: none&#034;,<br \/>\n    &#034;Sec-Fetch-Mode: navigate&#034;,<br \/>\n    &#034;Sec-Fetch-User: ?1&#034;,<br \/>\n    &#034;Sec-Fetch-Dest: document&#034;,<br \/>\n    &#034;Accept-Encoding: gzip, deflate, br, zstd&#034;,<br \/>\n    &#034;Accept-Language: zh-CN,zh;q&#061;0.9&#034;,<br \/>\n]<\/p>\n<p>\u8ba9\u6211\u4eec\u5206\u89e3\u8fd9\u4e2a\u8bf7\u6c42\u6570\u636e\u6765\u7406\u89e3\u6d4f\u89c8\u5668\u5bf9\u7a0b\u5e8f\u7684\u8981\u6c42\u3002<\/p>\n<h3>\u4ed4\u7ec6\u770b\u770b HTTP \u8bf7\u6c42<\/h3>\n<p>HTTP \u662f\u4e00\u4e2a\u57fa\u4e8e\u6587\u672c\u7684\u534f\u8bae&#xff0c;\u8bf7\u6c42\u91c7\u7528\u4ee5\u4e0b\u683c\u5f0f&#xff1a;<\/p>\n<p>Method Request-URI HTTP-Version CRLF<br \/>\nheaders CRLF<br \/>\nmessage-body<\/p>\n<p>\u7b2c\u4e00\u884c\u662f\u8bf7\u6c42\u884c&#xff0c;\u5305\u542b\u6709\u5173\u5ba2\u6237\u7aef\u8bf7\u6c42\u5185\u5bb9\u7684\u4fe1\u606f\u3002<\/p>\n<p>\u8bf7\u6c42\u884c\u7684\u7b2c\u4e00\u90e8\u5206\u8868\u660e\u6b63\u5728\u4f7f\u7528\u7684\u65b9\u6cd5&#xff0c;\u4f8b\u5982 GET \u6216 POST&#xff0c;\u5b83\u63cf\u8ff0\u4e86\u5ba2\u6237\u7aef\u5982\u4f55\u53d1\u51fa\u6b64\u8bf7\u6c42\u3002\u6211\u4eec\u7684\u5ba2\u6237\u7aef\u4f7f\u7528 GET \u8bf7\u6c42&#xff0c;\u8fd9\u610f\u5473\u7740\u5b83\u6b63\u5728\u8bf7\u6c42\u4fe1\u606f\u3002<\/p>\n<p>\u8bf7\u6c42\u884c\u7684\u4e0b\u4e00\u90e8\u5206\u662f\/&#xff0c;\u5b83\u6307\u793a\u5ba2\u6237\u673a\u8bf7\u6c42\u7684\u7edf\u4e00\u8d44\u6e90\u6807\u8bc6\u7b26&#xff08;URI&#xff09;\u3002URI \u7c7b\u4f3c\u4e8e URL&#xff0c;\u4f46\u662f HTTP \u89c4\u8303\u4f7f\u7528\u672f\u8bed URI\u3002<\/p>\n<p>\u8bf7\u6c42\u884c\u7684\u6700\u540e\u4e00\u90e8\u5206\u662f\u5ba2\u6237\u7aef\u4f7f\u7528\u7684 HTTP \u7248\u672c&#xff0c;\u7136\u540e\u8bf7\u6c42\u884c\u4ee5 CRLF \u5e8f\u5217 \\\\r\\\\n \u7ed3\u675f&#xff0c;\u5176\u4e2d \\\\r \u662f\u56de\u8f66&#xff0c;\\\\n \u662f\u6362\u884c\u7b26\u3002CRLF \u5e8f\u5217\u5c06\u8bf7\u6c42\u884c\u4e0e\u8bf7\u6c42\u6570\u636e\u7684\u5176\u4f59\u90e8\u5206\u5206\u5f00\u3002<\/p>\n<p>\u67e5\u770b\u6211\u4eec\u6536\u5230\u7684\u8bf7\u6c42\u884c\u6570\u636e&#xff0c;\u53ef\u4ee5\u770b\u5230 GET \u662f\u65b9\u6cd5&#xff0c;\/ \u662f\u8bf7\u6c42 URI&#xff0c; HTTP\/1.1 \u662f\u7248\u672c\u3002<\/p>\n<p>\u5728\u8bf7\u6c42\u884c\u4e4b\u540e&#xff0c;\u4ece Host: \u5f00\u59cb\u7684\u5176\u4f59\u884c\u662f\u8bf7\u6c42\u5934\u3002GET \u8bf7\u6c42\u6ca1\u6709\u8bf7\u6c42\u4f53\u3002<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u77e5\u9053\u4e86\u6d4f\u89c8\u5668\u5728\u8bf7\u6c42\u4ec0\u4e48&#xff0c;\u8ba9\u6211\u4eec\u53d1\u56de\u4e00\u4e9b\u6570\u636e\u5427&#xff01;<\/p>\n<h3>\u7f16\u5199\u54cd\u5e94<\/h3>\n<p>\u6211\u4eec\u5c06\u5b9e\u73b0\u53d1\u9001\u6570\u636e\u4ee5\u54cd\u5e94\u5ba2\u6237\u673a\u8bf7\u6c42\u3002HTTP \u54cd\u5e94\u7684\u683c\u5f0f\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token constant\">HTTP<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token class-name\">Version<\/span> <span class=\"token class-name\">Status<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token class-name\">Code<\/span> <span class=\"token class-name\">Reason<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token class-name\">Phrase<\/span> <span class=\"token constant\">CRLF<\/span><br \/>\nheaders <span class=\"token constant\">CRLF<\/span><br \/>\nmessage<span class=\"token operator\">&#8211;<\/span>body<\/p>\n<p>\u7b2c\u4e00\u884c\u662f\u72b6\u6001\u884c&#xff0c;\u5176\u4e2d\u5305\u542b\u54cd\u5e94\u4e2d\u4f7f\u7528\u7684 HTTP \u7248\u672c\u3001\u603b\u7ed3\u8bf7\u6c42\u7ed3\u679c\u7684\u6570\u5b57\u72b6\u6001\u7801&#xff0c;\u4ee5\u53ca\u63d0\u4f9b\u72b6\u6001\u7801\u6587\u672c\u63cf\u8ff0\u7684\u539f\u56e0\u77ed\u8bed\u3002\u5728 CRLF \u5e8f\u5217\u4e4b\u540e\u662f\u4efb\u4f55\u54cd\u5e94\u5934\u3001\u53e6\u4e00\u4e2a CRLF \u5e8f\u5217\u548c\u54cd\u5e94\u4f53\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528 HTTP 1.1 \u7248\u672c\u7684\u54cd\u5e94\u793a\u4f8b&#xff0c;\u5b83\u7684\u72b6\u6001\u7801\u662f 200&#xff0c;\u4e00\u4e2a OK \u539f\u56e0\u77ed\u8bed&#xff0c;\u6ca1\u6709\u54cd\u5e94\u5934\u3001\u54cd\u5e94\u4f53&#xff1a;<\/p>\n<p>HTTP\/1.1 200 OK\\\\r\\\\n\\\\r\\\\n<\/p>\n<p>\u72b6\u6001\u7801 200 \u662f\u6807\u51c6\u7684\u6210\u529f\u54cd\u5e94\u3002\u8ba9\u6211\u4eec\u5c06\u5176\u5199\u5165\u6d41&#xff0c;\u4f5c\u4e3a\u5bf9\u6210\u529f\u8bf7\u6c42\u7684\u54cd\u5e94\u3002\u4fee\u6539 handle_connection \u51fd\u6570&#xff1a;<\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> buf_reader <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> http_request<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Vec<\/span><span class=\"token operator\">&lt;<\/span>_<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">&#061;<\/span> buf_reader<br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">lines<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>result<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> result<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">take_while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>line<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> <span class=\"token operator\">!<\/span>line<span class=\"token punctuation\">.<\/span><span class=\"token function\">is_empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">collect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;HTTP\/1.1 200 OK\\\\r\\\\n\\\\r\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">write_all<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span><span class=\"token function\">as_bytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>as_bytes \u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u6570\u636e\u8f6c\u6362\u4e3a\u5b57\u8282\u3002\u6d41\u4e0a\u7684 write_all \u65b9\u6cd5\u63a5\u53d7 &amp;[u8]&#xff0c;\u5e76\u5c06\u8fd9\u4e9b\u5b57\u8282\u76f4\u63a5\u53d1\u9001\u5230\u8fde\u63a5\u3002\u56e0\u4e3a write_all \u64cd\u4f5c\u53ef\u80fd\u5931\u8d25&#xff0c;\u6240\u4ee5\u6211\u4eec\u50cf\u4ee5\u524d\u4e00\u6837\u5bf9\u4efb\u4f55\u9519\u8bef\u7ed3\u679c\u4f7f\u7528 unwrap\u3002<\/p>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u66f4\u6539&#xff0c;\u8ba9\u6211\u4eec\u8fd0\u884c\u4ee3\u7801\u5e76\u5728\u6d4f\u89c8\u5668\u4e2d\u52a0\u8f7d 127.0.0.1:7878\u3002\u4f60\u5e94\u8be5\u5f97\u5230\u4e00\u4e2a\u7a7a\u767d\u9875\u9762&#xff0c;\u800c\u4e0d\u662f\u4e00\u4e2a\u9519\u8bef\u9875\u9762\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729214728-68894170d79fa.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u8fd4\u56de\u771f\u6b63\u7684 HTML<\/h3>\n<p>\u8ba9\u6211\u4eec\u5b9e\u73b0\u4e0d\u6b62\u8fd4\u56de\u4e00\u4e2a\u7a7a\u767d\u9875\u7684\u529f\u80fd\u3002\u5728\u9879\u76ee\u76ee\u5f55\u7684\u6839\u76ee\u5f55\u4e2d\u521b\u5efa\u65b0\u6587\u4ef6 hello.html\u3002<\/p>\n<p><span class=\"token doctype\"><span class=\"token punctuation\">&lt;!<\/span><span class=\"token doctype-tag\">DOCTYPE<\/span> <span class=\"token name\">html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>html<\/span> <span class=\"token attr-name\">lang<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>en<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>meta<\/span> <span class=\"token attr-name\">charset<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>utf-8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Hello!<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Hello!<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>p<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Hi from Rust<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>p<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u63a5\u7740\u4fee\u6539 handle_connection \u51fd\u6570&#xff0c;\u8bfb\u53d6 HTML \u6587\u4ef6&#xff0c;\u5c06\u5176\u4f5c\u4e3a\u6b63\u6587\u6dfb\u52a0\u5230\u54cd\u5e94\u4e2d&#xff0c;\u7136\u540e\u53d1\u9001\u3002<\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> buf_reader <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> http_request<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Vec<\/span><span class=\"token operator\">&lt;<\/span>_<span class=\"token operator\">&gt;<\/span> <span class=\"token operator\">&#061;<\/span> buf_reader<br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">lines<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>result<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> result<span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">take_while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token closure-params\"><span class=\"token closure-punctuation punctuation\">|<\/span>line<span class=\"token closure-punctuation punctuation\">|<\/span><\/span> <span class=\"token operator\">!<\/span>line<span class=\"token punctuation\">.<\/span><span class=\"token function\">is_empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">collect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> status_line <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;HTTP\/1.1 200 OK&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> contents <span class=\"token operator\">&#061;<\/span> <span class=\"token namespace\">fs<span class=\"token punctuation\">::<\/span><\/span><span class=\"token function\">read_to_string<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;hello.html&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> length <span class=\"token operator\">&#061;<\/span> contents<span class=\"token punctuation\">.<\/span><span class=\"token function\">len<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> response <span class=\"token operator\">&#061;<\/span><br \/>\n        <span class=\"token macro property\">format!<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;{status_line}\\\\r\\\\nContent-Length: {length}\\\\r\\\\n\\\\r\\\\n{contents}&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">write_all<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span><span class=\"token function\">as_bytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6211\u4eec\u4f7f\u7528 format! \u5c06 hello.html \u7684\u5185\u5bb9\u6dfb\u52a0\u5230\u54cd\u5e94\u4f53\u4e2d\u3002\u4e3a\u4e86\u786e\u4fdd\u6709\u6548\u7684 HTTP \u54cd\u5e94&#xff0c;\u6211\u4eec\u6dfb\u52a0\u4e86 Content-Length&#xff0c;\u8be5\u62a5\u5934\u8bbe\u7f6e\u4e3a\u54cd\u5e94\u4f53\u7684\u5927\u5c0f&#xff0c;\u5728\u672c\u4f8b\u4e2d\u4e3a hello.html \u7684\u5927\u5c0f\u3002<\/p>\n<p>\u8fd0\u884c\u8fd9\u6bb5\u4ee3\u7801&#xff0c;\u5e76\u5728\u6d4f\u89c8\u5668\u4e2d\u52a0\u8f7d 127.0.0.1:7878\u3002\u6211\u4eec\u770b\u5230\u6d4f\u89c8\u5668\u63a5\u6536\u5e76\u6e32\u67d3\u4e86 hello.html\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729214729-6889417103c02.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u76ee\u524d&#xff0c;\u6211\u4eec\u5ffd\u7565\u4e86 http_request \u4e2d\u7684\u8bf7\u6c42\u6570\u636e&#xff0c;\u53ea\u662f\u65e0\u6761\u4ef6\u5730\u53d1\u56de HTML \u6587\u4ef6\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u6211\u4eec\u5e0c\u671b\u6839\u636e\u8bf7\u6c42\u5b9a\u5236\u54cd\u5e94&#xff0c;\u53ea\u54cd\u5e94\u683c\u5f0f\u826f\u597d\u7684\u8bf7\u6c42\u3002<\/p>\n<h3>\u9a8c\u8bc1\u8bf7\u6c42\u5e76\u9009\u62e9\u6027\u5730\u54cd\u5e94<\/h3>\n<p>\u8ba9\u6211\u4eec\u6dfb\u52a0\u4e00\u4e9b\u529f\u80fd&#xff0c;\u5728\u8fd4\u56de HTML \u6587\u4ef6\u4e4b\u524d\u68c0\u67e5\u6d4f\u89c8\u5668\u662f\u5426\u6b63\u5728\u8bf7\u6c42 \/&#xff0c;\u5982\u679c\u6d4f\u89c8\u5668\u8bf7\u6c42\u4efb\u4f55\u5176\u4ed6\u5185\u5bb9&#xff0c;\u5219\u8fd4\u56de\u4e00\u4e2a\u9519\u8bef\u3002<\/p>\n<p>\u6211\u4eec\u9700\u8981\u4fee\u6539 handle_connection \u51fd\u6570&#xff0c;\u68c0\u67e5\u6536\u5230\u7684\u8bf7\u6c42\u7684\u5185\u5bb9&#xff0c;\u5e76\u6dfb\u52a0 if \u548c else \u5757\u4ee5\u533a\u522b\u5bf9\u5f85\u8bf7\u6c42\u3002<\/p>\n<p><span class=\"token comment\">\/\/ &#8211;snip&#8211;<\/span><\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TcpStream<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> buf_reader <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">BufReader<\/span><span class=\"token punctuation\">::<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stream<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> request_line <span class=\"token operator\">&#061;<\/span> buf_reader<span class=\"token punctuation\">.<\/span><span class=\"token function\">lines<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> request_line <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;GET \/ HTTP\/1.1&#034;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> status_line <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;HTTP\/1.1 200 OK&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> contents <span class=\"token operator\">&#061;<\/span> <span class=\"token namespace\">fs<span class=\"token punctuation\">::<\/span><\/span><span class=\"token function\">read_to_string<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;hello.html&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> length <span class=\"token operator\">&#061;<\/span> contents<span class=\"token punctuation\">.<\/span><span class=\"token function\">len<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">let<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token macro property\">format!<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token string\">&#034;{status_line}\\\\r\\\\nContent-Length: {length}\\\\r\\\\n\\\\r\\\\n{contents}&#034;<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">write_all<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span><span class=\"token function\">as_bytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ some other request<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6211\u4eec\u5c06\u53ea\u67e5\u770b HTTP \u8bf7\u6c42\u7684\u7b2c\u4e00\u884c&#xff0c;\u56e0\u6b64\u6211\u4eec\u5c06\u8c03\u7528 next \u6765\u4ece\u8fed\u4ee3\u5668\u4e2d\u83b7\u53d6\u7b2c\u4e00\u9879&#xff0c;\u800c\u4e0d\u662f\u5c06\u6574\u4e2a\u8bf7\u6c42\u8bfb\u5165 vector\u3002\u7b2c\u4e00\u6b21 unwrap \u5904\u7406 Option&#xff0c;\u5982\u679c\u8fed\u4ee3\u5668\u6ca1\u6709\u9879&#xff0c;\u5219\u505c\u6b62\u7a0b\u5e8f\u3002\u7b2c\u4e8c\u4e2a unwrap \u5904\u7406 Result&#xff0c;\u53d6\u51fa\u8bf7\u6c42\u5185\u5bb9\u3002<\/p>\n<p>\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u68c0\u67e5 request_line&#xff0c;\u770b\u770b\u5b83\u662f\u5426\u7b49\u4e8e\u5bf9 \/ \u8def\u5f84\u7684 GET \u8bf7\u6c42\u7684\u8bf7\u6c42\u884c\u3002\u5982\u679c\u662f&#xff0c;if \u5757\u8fd4\u56de hello.html \u6587\u4ef6\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u73b0\u5728\u8fd0\u884c\u6b64\u4ee3\u7801\u5e76\u8bf7\u6c42 127.0.0.1:7878&#xff0c;\u8fd8\u662f\u6210\u529f\u7684\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729214729-6889417103c02.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5982\u679c\u53d1\u51fa\u4efb\u4f55\u5176\u4ed6\u8bf7\u6c42&#xff0c;\u4f8b\u5982 127.0.0.1:7878\/other&#xff0c;\u4f60\u5c06\u5f97\u5230\u4e00\u4e2a\u8fde\u63a5\u9519\u8bef\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729214729-68894171287d7.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u73b0\u5728&#xff0c;\u8ba9\u6211\u4eec\u5b8c\u5584 else \u5757\u4e2d\u7684\u4ee3\u7801&#xff0c;\u8fd4\u56de\u4e00\u4e2a\u72b6\u6001\u7801\u4e3a 404\u3001\u539f\u56e0\u77ed\u8bed\u4e3a NOT FOUND \u7684\u54cd\u5e94&#xff0c;\u54cd\u5e94\u4f53\u662f 404.html \u6587\u4ef6\u3002<\/p>\n<p>    <span class=\"token comment\">\/\/ &#8211;snip&#8211;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> status_line <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;HTTP\/1.1 404 NOT FOUND&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> contents <span class=\"token operator\">&#061;<\/span> <span class=\"token namespace\">fs<span class=\"token punctuation\">::<\/span><\/span><span class=\"token function\">read_to_string<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;404.html&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">let<\/span> length <span class=\"token operator\">&#061;<\/span> contents<span class=\"token punctuation\">.<\/span><span class=\"token function\">len<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">let<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token macro property\">format!<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token string\">&#034;{status_line}\\\\r\\\\nContent-Length: {length}\\\\r\\\\n\\\\r\\\\n{contents}&#034;<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">write_all<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span><span class=\"token function\">as_bytes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>404.html&#xff1a;<\/p>\n<p><span class=\"token doctype\"><span class=\"token punctuation\">&lt;!<\/span><span class=\"token doctype-tag\">DOCTYPE<\/span> <span class=\"token name\">html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>html<\/span> <span class=\"token attr-name\">lang<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>en<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>meta<\/span> <span class=\"token attr-name\">charset<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>utf-8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Hello!<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>title<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>head<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Oops!<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>h1<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>p<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>Sorry, I don&#039;t know what you&#039;re asking for.<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>p<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>body<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>html<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u66f4\u6539&#xff0c;\u518d\u6b21\u8fd0\u884c\u670d\u52a1\u5668\u3002\u8bf7\u6c42 127.0.0.1:7878 \u5e94\u8be5\u8fd4\u56de hello.html \u7684\u5185\u5bb9\u3002\u800c\u4efb\u4f55\u5176\u4ed6\u8bf7\u6c42&#xff0c;\u5982 127.0.0.1:7878\/other&#xff0c;\u5e94\u8be5\u8fd4\u56de 404.html \u4e2d\u7684\u9519\u8bef HTML\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250729214729-6889417176aab.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u4ee3\u7801\u91cd\u6784<\/h3>\n<p>\u76ee\u524d&#xff0c;if \u548c els e\u5757\u6709\u5f88\u591a\u91cd\u590d&#xff1a;\u5b83\u4eec\u90fd\u5728\u8bfb\u53d6\u6587\u4ef6\u5e76\u5c06\u6587\u4ef6\u7684\u5185\u5bb9\u5199\u5165\u6d41&#xff0c;\u552f\u4e00\u7684\u533a\u522b\u662f\u72b6\u6001\u884c\u548c\u6587\u4ef6\u540d\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u5c06\u8fd9\u4e9b\u5dee\u5f02\u63d0\u53d6\u5230\u5355\u72ec\u7684 if \u548c else \u884c\u4e2d&#xff0c;\u5c06\u72b6\u6001\u884c\u548c\u6587\u4ef6\u540d\u7684\u503c\u5206\u914d\u7ed9\u53d8\u91cf&#xff0c;\u7136\u540e\u4f7f\u7528\u8fd9\u4e9b\u53d8\u91cf\u6765\u8bfb\u53d6\u6587\u4ef6\u5e76\u5199\u5165\u54cd\u5e94\u3002<\/p>\n<p><span class=\"token keyword\">fn<\/span> <span class=\"token function-definition function\">handle_connection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">mut<\/span> stream<span class=\"token punctuation\">:<\/span> <span 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<span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;HTTP\/1.1 404 NOT FOUND&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;404.html&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> contents <span class=\"token operator\">&#061;<\/span> <span class=\"token namespace\">fs<span class=\"token punctuation\">::<\/span><\/span><span class=\"token function\">read_to_string<\/span><span class=\"token punctuation\">(<\/span>filename<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">unwrap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> length <span class=\"token operator\">&#061;<\/span> contents<span class=\"token punctuation\">.<\/span><span class=\"token function\">len<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">let<\/span> response <span class=\"token operator\">&#061;<\/span><br \/>\n        <span class=\"token macro property\">format!<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;{status_line}\\\\r\\\\nContent-Length: {length}\\\\r\\\\n\\\\r\\\\n{contents}&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    stream<span class=\"token punctuation\">.<\/span><span class=\"token function\">write_all<\/span><span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">.<\/span><span 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