{"id":207525,"date":"2025-07-08T13:36:29","date_gmt":"2025-07-08T05:36:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207525\/"},"modified":"2025-07-08T13:36:29","modified_gmt":"2025-07-08T05:36:29","slug":"golang-csv%e5%9c%a8linux%e4%b8%8a%e5%86%99%e7%a9%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207525\/","title":{"rendered":"Golang csv\u5728linux\u4e0a\u5199\u7a7a"},"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>Golang csv\u5728linux\u4e0a\u5199\u7a7a<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-23 12:15:43<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662fGolang\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300aGolang csv\u5728linux\u4e0a\u5199\u7a7a\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u5728linux\u4e0a\u7f16\u5199csv\u6587\u4ef6\u65f6\u9047\u5230\u95ee\u9898\uff0c\u4f7f\u7528\u5b8c\u5168\u76f8\u540c\u7684\u4ee3\u7801\uff0c\u5b83\u53ef\u4ee5\u5728windows\u4e0a\u8fd0\u884c\uff0c\u4f46\u5728linux\uff08centos7\uff09\u4e0a\u6ca1\u6709\u4efb\u4f55\u5185\u5bb9\u5199\u5165\u6587\u4ef6\uff1a<\/p>\n<pre>package main\n\nimport (\n    \"os\"\n    \"fmt\"\n    \"encoding\/csv\"\n)\n\nvar data = [][]string{\n    {\"1\",\"2\",\"3\",\"4\",\"5\"},\n    {\"a\",\"b\",\"c\",\"d\",\"f\"},\n}\n\n\nfunc main() {\n    filename := \"example.csv\"\n    fp,e := os.OpenFile(filename, os.O_CREATE|os.O_APPEND, os.ModePerm)\n    if nil != e {\n        fmt.Printf(\"Open file '%s' failed: %s\\n\", filename, e)\n        os.Exit(1)\n    }\n    defer fp.Close()\n    w := csv.NewWriter(fp)\n    defer w.Flush()\n    for _,l := range data {\n        if e := w.Write(l); nil != e {\n            fmt.Printf(\"Write csv failed: %s\\n\",e)\n            os.Exit(1)\n        }\n    }\n    fmt.Println(\"Done.\")\n}<\/pre>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>golang \u89c4\u8303\u63cf\u8ff0 \uff1a<\/p>\n<p>openfile \u662f\u5e7f\u4e49\u7684 open \u8c03\u7528\uff1b\u5927\u591a\u6570\u7528\u6237\u4f1a\u4f7f\u7528 open \u6216 \u800c\u662f\u521b\u5efa\u3002\u5b83\u6253\u5f00\u5177\u6709\u6307\u5b9a\u6807\u5fd7\u7684\u547d\u540d\u6587\u4ef6\uff08o_rdonly \u7b49\uff09\u548c\u70eb\u53d1\uff08\u5728 umask \u4e4b\u524d\uff09\uff08\u5982\u679c\u9002\u7528\uff09\u3002\u5982\u679c\u6210\u529f\u7684\u8bdd\u65b9\u6cd5 \u8fd4\u56de\u7684\u6587\u4ef6\u53ef\u7528\u4e8e i\/o\u3002\u5982\u679c\u6709\u9519\u8bef\u7684\u8bdd\uff0c \u5c06\u662f *patherror \u7c7b\u578b\u3002<\/p>\n<p>\u60a8\u7f3a\u5c11\u5199\u5165\u4f7f\u7528 <code>openfile<\/code> \u51fd\u6570\u521b\u5efa\u7684\u6587\u4ef6\u7684\u6807\u5fd7\uff0c\u8fd9\u5c31\u662f\u6253\u5f00\u6587\u4ef6\u8fdb\u884c\u5199\u5165\u6216\u8bfb\u53d6\u4f46\u6ca1\u6709\u4efb\u4f55\u5185\u5bb9\u5199\u5165 csv \u7684\u539f\u56e0\u3002<\/p>\n<pre>package main\n\nimport (\n    \"encoding\/csv\"\n    \"fmt\"\n    \"os\"\n)\n\nvar data = [][]string{\n    {\"1\", \"2\", \"3\", \"4\", \"5\"},\n    {\"a\", \"b\", \"c\", \"d\", \"f\"},\n}\n\nfunc main() {\n    filename := \"example.csv\"\n    fp, e := os.openfile(filename, os.o_create|os.o_append|os.o_wronly, os.modeperm)\n    if nil != e {\n        fmt.printf(\"open file '%s' failed: %s\\n\", filename, e)\n        os.exit(1)\n    }\n    defer fp.close()\n    w := csv.newwriter(fp)\n    defer w.flush()\n    for _, l := range data {\n        if e := w.write(l); nil != e {\n            fmt.printf(\"write csv failed: %s\\n\", e)\n            os.exit(1)\n        }\n    }\n    fmt.println(\"done.\")\n}<\/pre>\n<\/p>\n<p> \u7684\u6e90\u4ee3\u7801\u4e2d\u8be6\u7ec6\u8bf4\u660e\u4e86\u6807\u5fd7\uff1a<\/p>\n<pre>\/\/ Flags to OpenFile wrapping those of the underlying system. Not all\n\n\/\/ flags may be implemented on a given system.\n\nconst (\n    \/\/ Exactly one of O_RDONLY, O_WRONLY, or O_RDWR must be specified.\n    O_RDONLY int = syscall.O_RDONLY \/\/ open the file read-only.\n    O_WRONLY int = syscall.O_WRONLY \/\/ open the file write-only.\n    O_RDWR   int = syscall.O_RDWR   \/\/ open the file read-write.\n    \/\/ The remaining values may be or'ed in to control behavior.\n    O_APPEND int = syscall.O_APPEND \/\/ append data to the file when writing.\n    O_CREATE int = syscall.O_CREAT  \/\/ create a new file if none exists.\n    O_EXCL   int = syscall.O_EXCL   \/\/ used with O_CREATE, file must not exist.\n    O_SYNC   int = syscall.O_SYNC   \/\/ open for synchronous I\/O.\n    O_TRUNC  int = syscall.O_TRUNC  \/\/ if possible, truncate file when opened.\n\n)<\/pre>\n<p>\u4eca\u5929\u5173\u4e8e\u300aGolang csv\u5728linux\u4e0a\u5199\u7a7a\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\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-207525","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207525","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=207525"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207525\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207525"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207525"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}