{"id":207008,"date":"2025-07-08T08:47:20","date_gmt":"2025-07-08T00:47:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207008\/"},"modified":"2025-07-08T08:47:20","modified_gmt":"2025-07-08T00:47:20","slug":"%e5%9c%a8-golang-%e4%b8%ad%e8%ae%bf%e9%97%ae-for-%e5%be%aa%e7%8e%af%e4%b9%8b%e5%a4%96%e7%9a%84%e5%8f%98%e9%87%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207008\/","title":{"rendered":"\u5728 Golang \u4e2d\u8bbf\u95ee for \u5faa\u73af\u4e4b\u5916\u7684\u53d8\u91cf"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>\u5728 Golang \u4e2d\u8bbf\u95ee for \u5faa\u73af\u4e4b\u5916\u7684\u53d8\u91cf<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-19 14:30:34<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">Golang<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5728 Golang \u4e2d\u8bbf\u95ee for \u5faa\u73af\u4e4b\u5916\u7684\u53d8\u91cf\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u6b63\u5728\u5c1d\u8bd5\u8bfb\u53d6 csv \u6587\u4ef6\u4ee5\u5c06\u503c\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\u3002\u4f46\u662f\uff0c\u6211\u65e0\u6cd5\u8bbf\u95ee for \u5faa\u73af\u4e4b\u5916\u7684\u53d8\u91cf<\/p>\n<pre>func GetKeys(filename string) {\n    var record []string\n    var err error\n    file, err := os.Open(filename)\n    if err != nil {\n        log.Fatal(err)\n    }\n    defer file.Close()\n    \/\/ Create a new reader.\n    reader := csv.NewReader(bufio.NewReader(file))\n    for {\n        record, err = reader.Read()\n        \/\/ Stop at EOF.\n        if err == io.EOF {\n            break\n        }\n        fmt.Printf(\"%v\", record) \/\/ works fine\n        fmt.Printf(\"%v\\n\", record[0]) \/\/ works fine too\n    }\n    fmt.Printf(\"%v\\n\", record) \/\/ returns empty slice\n}\n\nfunc main() {\n    GetKeys(\"credentials.csv\")\n}<\/pre>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u5f53 <code>reader.read()<\/code> \u8fd4\u56de <code>io.eof<\/code> \u65f6\uff0c\u5faa\u73af\u4e2d\u65ad\u3002\u5f53\u60a8\u7684\u8f93\u5165\u88ab\u6d88\u8017\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n<p>\u540c\u65f6\uff08\u5f53\u8fd4\u56de<code>io.eof<\/code>\u65f6\uff09\uff0c\u8fd4\u56de\u7684\u8bb0\u5f55\u5c06\u4e3a<code>nil<\/code>\u3002 \uff1a<\/p>\n<p>\u56e0\u6b64\uff0c\u60a8\u5c06 <code>nil<\/code> \u5206\u914d\u7ed9 <code>record<\/code> \u53d8\u91cf\uff0c\u5faa\u73af\u4e2d\u65ad\uff0c\u7136\u540e\u60a8\u68c0\u67e5 <code>record<\/code> \u53d8\u91cf\u3002<\/p>\n<p>\u5982\u679c\u60a8\u7684\u76ee\u7684\u662f\u4fdd\u5b58\u6700\u540e\u4e00\u6761\u8bb0\u5f55\uff0c\u8bf7\u5c06\u5176\u5b58\u50a8\u5728\u5355\u72ec\u7684\u53d8\u91cf\u4e2d\uff0c\u5e76\u4e14\u4e0d\u8981\u7528\u6700\u540e\u4e00\u6761 <code>nil<\/code> \u8bb0\u5f55\u201c\u8986\u76d6\u201d\u5b83\uff1a<\/p>\n<pre>var lastRecord []string\nfor {\n    record, err = reader.Read()\n    \/\/ Stop at EOF.\n    if err == io.EOF {\n        break\n    }\n    lastRecord = record\n    fmt.Printf(\"%v\", record) \/\/ works fine\n    fmt.Printf(\"%v\\n\", record[0]) \/\/ works fine too\n}\nfmt.Printf(\"%v\\n\", lastRecord) \/\/ this will be the last non-nil record<\/pre>\n<p>\u672c\u7bc7\u5173\u4e8e\u300a\u5728 Golang \u4e2d\u8bbf\u95ee for \u5faa\u73af\u4e4b\u5916\u7684\u53d8\u91cf\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8eGolang\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207008","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207008","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=207008"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207008\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}