{"id":57794,"date":"2024-10-10T21:11:36","date_gmt":"2024-10-10T13:11:36","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57794\/"},"modified":"2024-10-10T21:11:36","modified_gmt":"2024-10-10T13:11:36","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e4%bd%bf%e7%94%a8-buffer-%e8%ae%80%e5%8f%96%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57794\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00\u4f7f\u7528 buffer \u8b80\u53d6\u6587\u4ef6"},"content":{"rendered":"<h1 id=\"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e4%bd%bf%e7%94%a8-buffer-%e8%ae%80%e5%8f%96%e6%96%87%e4%bb%b6-bGwTLCNHKF\">GO\u6559\u7a0b: Go \u8a9e\u8a00\u4f7f\u7528 buffer \u8b80\u53d6\u6587\u4ef6<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6587\u4ef6\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002Go \u8a9e\u8a00\u4ee5\u5176\u7c21\u6f54\u7684\u8a9e\u6cd5\u548c\u9ad8\u6548\u7684\u6027\u80fd\uff0c\u6210\u70ba\u4e86\u8a31\u591a\u958b\u767c\u8005\u7684\u9996\u9078\u8a9e\u8a00\u4e4b\u4e00\u3002\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 Go \u8a9e\u8a00\u4e2d\u7684 buffer \u4f86\u8b80\u53d6\u6587\u4ef6\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u4f86\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e4%bd%bf%e7%94%a8-buffer-%e8%ae%80%e5%8f%96%e6%96%87%e4%bb%b6%ef%bc%9f-bGwTLCNHKF\">\u70ba\u4ec0\u9ebc\u4f7f\u7528 buffer \u8b80\u53d6\u6587\u4ef6\uff1f<\/h2>\n<p>\u5728\u8655\u7406\u5927\u6587\u4ef6\u6642\uff0c\u9010\u884c\u6216\u9010\u5b57\u5143\u8b80\u53d6\u6587\u4ef6\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\u3002\u4f7f\u7528 buffer \u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11 I\/O \u64cd\u4f5c\u7684\u6b21\u6578\uff0c\u5f9e\u800c\u63d0\u9ad8\u8b80\u53d6\u6548\u7387\u3002Go \u8a9e\u8a00\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u4f7f\u7528 buffer \u8b80\u53d6\u6587\u4ef6\uff0c\u6700\u5e38\u898b\u7684\u65b9\u5f0f\u662f\u4f7f\u7528 <code>bufio<\/code> \u5305\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%96%87%e4%bb%b6%e8%ae%80%e5%8f%96%e6%b5%81%e7%a8%8b-bGwTLCNHKF\">\u57fa\u672c\u7684\u6587\u4ef6\u8b80\u53d6\u6d41\u7a0b<\/h2>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u8b80\u53d6\u6587\u4ef6\u7684\u57fa\u672c\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u6253\u958b\u6587\u4ef6<\/li>\n<li>\u5275\u5efa\u4e00\u500b buffer<\/li>\n<li>\u4f7f\u7528 buffer \u8b80\u53d6\u6587\u4ef6\u5167\u5bb9<\/li>\n<li>\u95dc\u9589\u6587\u4ef6<\/li>\n<\/ol>\n<h2 id=\"%e7%af%84%e4%be%8b%e4%bb%a3%e7%a2%bc-bGwTLCNHKF\">\u7bc4\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 buffer \u8b80\u53d6\u6587\u4ef6\u7684\u7c21\u55ae\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>package main\n\nimport (\n    \"bufio\"\n    \"fmt\"\n    \"os\"\n)\n\nfunc main() {\n    \/\/ \u6253\u958b\u6587\u4ef6\n    file, err := os.Open(\"example.txt\")\n    if err != nil {\n        fmt.Println(\"\u7121\u6cd5\u6253\u958b\u6587\u4ef6:\", err)\n        return\n    }\n    defer file.Close()\n\n    \/\/ \u5275\u5efa\u4e00\u500b buffer\n    scanner := bufio.NewScanner(file)\n\n    \/\/ \u4f7f\u7528 buffer \u9010\u884c\u8b80\u53d6\u6587\u4ef6\n    for scanner.Scan() {\n        fmt.Println(scanner.Text())\n    }\n\n    \/\/ \u6aa2\u67e5\u662f\u5426\u6709\u932f\u8aa4\u767c\u751f\n    if err := scanner.Err(); err != nil {\n        fmt.Println(\"\u8b80\u53d6\u6587\u4ef6\u6642\u767c\u751f\u932f\u8aa4:\", err)\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u4f7f\u7528 <code>os.Open<\/code> \u51fd\u6578\u6253\u958b\u4e00\u500b\u540d\u70ba <code>example.txt<\/code> \u7684\u6587\u4ef6\u3002\u63a5\u8457\uff0c\u6211\u5011\u4f7f\u7528 <code>bufio.NewScanner<\/code> \u5275\u5efa\u4e00\u500b scanner\uff0c\u7136\u5f8c\u4f7f\u7528 <code>scanner.Scan()<\/code> \u65b9\u6cd5\u9010\u884c\u8b80\u53d6\u6587\u4ef6\u5167\u5bb9\u3002\u6700\u5f8c\uff0c\u6211\u5011\u6aa2\u67e5\u662f\u5426\u6709\u932f\u8aa4\u767c\u751f\uff0c\u4e26\u5728\u63a7\u5236\u53f0\u8f38\u51fa\u8b80\u53d6\u7684\u5167\u5bb9\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-bufio-reader-%e9%80%b2%e8%a1%8c%e6%9b%b4%e9%ab%98%e6%95%88%e7%9a%84%e8%ae%80%e5%8f%96-bGwTLCNHKF\">\u4f7f\u7528 bufio.Reader \u9032\u884c\u66f4\u9ad8\u6548\u7684\u8b80\u53d6<\/h2>\n<p>\u9664\u4e86\u4f7f\u7528 <code>bufio.Scanner<\/code>\uff0c\u6211\u5011\u9084\u53ef\u4ee5\u4f7f\u7528 <code>bufio.Reader<\/code> \u4f86\u9032\u884c\u66f4\u9ad8\u6548\u7684\u8b80\u53d6\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 <code>bufio.Reader<\/code> \u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>package main\n\nimport (\n    \"bufio\"\n    \"fmt\"\n    \"os\"\n)\n\nfunc main() {\n    \/\/ \u6253\u958b\u6587\u4ef6\n    file, err := os.Open(\"example.txt\")\n    if err != nil {\n        fmt.Println(\"\u7121\u6cd5\u6253\u958b\u6587\u4ef6:\", err)\n        return\n    }\n    defer file.Close()\n\n    \/\/ \u5275\u5efa\u4e00\u500b bufio.Reader\n    reader := bufio.NewReader(file)\n\n    \/\/ \u9010\u884c\u8b80\u53d6\u6587\u4ef6\n    for {\n        line, err := reader.ReadString('n')\n        if err != nil {\n            break\n        }\n        fmt.Print(line)\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>bufio.NewReader<\/code> \u5275\u5efa\u4e86\u4e00\u500b reader\uff0c\u7136\u5f8c\u4f7f\u7528 <code>ReadString<\/code> \u65b9\u6cd5\u9010\u884c\u8b80\u53d6\u6587\u4ef6\u3002\u9019\u7a2e\u65b9\u6cd5\u5728\u8655\u7406\u5927\u6587\u4ef6\u6642\u901a\u5e38\u6703\u66f4\u9ad8\u6548\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bGwTLCNHKF\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528 Go \u8a9e\u8a00\u4e2d\u7684 buffer \u8b80\u53d6\u6587\u4ef6\u662f\u4e00\u500b\u9ad8\u6548\u4e14\u7c21\u55ae\u7684\u904e\u7a0b\u3002\u7121\u8ad6\u662f\u4f7f\u7528 <code>bufio.Scanner<\/code> \u9084\u662f <code>bufio.Reader<\/code>\uff0c\u90fd\u80fd\u5920\u6709\u6548\u5730\u63d0\u9ad8\u6587\u4ef6\u8b80\u53d6\u7684\u6027\u80fd\u3002\u9019\u4e9b\u6280\u8853\u5728\u8655\u7406\u5927\u6578\u64da\u96c6\u6216\u9700\u8981\u5feb\u901f I\/O \u64cd\u4f5c\u7684\u61c9\u7528\u4e2d\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u6216\u5176\u4ed6\u76f8\u95dc\u7684\u670d\u52d9\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 Go \u8a9e\u8a00\u4e2d\u4f7f\u7528 buffer \u8b80\u53d6\u6587\u4ef6\uff0c\u63d0\u5347\u6587\u4ef6\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u4ee3\u78bc\u64cd\u4f5c\uff0c\u5feb\u901f\u638c\u63e1\u5be6\u7528\u6280\u5de7\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-57794","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57794","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=57794"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57794\/revisions"}],"predecessor-version":[{"id":57795,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57794\/revisions\/57795"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}