{"id":521,"date":"2026-05-06T10:48:21","date_gmt":"2026-05-06T01:48:21","guid":{"rendered":"https:\/\/www.zeronana.net\/?p=521"},"modified":"2026-05-06T15:38:48","modified_gmt":"2026-05-06T06:38:48","slug":"%e3%80%90%e5%88%9d%e5%bf%83%e8%80%85%e5%90%91%e3%81%91%e3%80%91go%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e6%93%8d%e4%bd%9c%e3%81%ae%e6%96%b9%e6%b3%95%ef%bd%9c%e8%aa%ad%e3%81%bf%e8%be%bc%e3%81%bf%e3%83%bb","status":"publish","type":"post","link":"https:\/\/www.zeronana.net\/?p=521","title":{"rendered":"\u3010\u521d\u5fc3\u8005\u5411\u3051\u3011Go\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306e\u65b9\u6cd5\uff5c\u8aad\u307f\u8fbc\u307f\u30fb\u66f8\u304d\u8fbc\u307f\u958b\u767a\u5165\u9580"},"content":{"rendered":"\n<p>Go \u3067\u306f\u3001\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u7c21\u5358\u306b\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<br>\u30ed\u30b0\u51fa\u529b\u3001CSV\u51e6\u7406\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u7ba1\u7406\u306a\u3069\u3001\u5b9f\u52d9\u958b\u767a\u3067\u306f\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001Go\u3067\u306e\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u30fb\u66f8\u304d\u8fbc\u307f\u65b9\u6cd5\u3092\u300c\u57fa\u672c\u30fb\u5b9f\u88c5\u30fb\u5b9f\u52d9\u3067\u4f7f\u3048\u308b\u30c6\u30af\u30cb\u30c3\u30af\u300d\u307e\u3067\u521d\u5fc3\u8005\u5411\u3051\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Go\u3067\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3059\u308b\u7406\u7531<\/h2>\n\n\n\n<p>\u4f8b\u3048\u3070\ud83d\udc47<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ed\u30b0\u4fdd\u5b58<\/li>\n\n\n\n<li>CSV\u51fa\u529b<\/li>\n\n\n\n<li>JSON\u4fdd\u5b58<\/li>\n\n\n\n<li>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u7ba1\u7406<\/li>\n\n\n\n<li>\u30d0\u30c3\u30c1\u51e6\u7406<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 \u5b9f\u52d9\u3067\u983b\u51fa<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">os.ReadFile<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>package main<br><br>import (<br>    \"fmt\"<br>    \"os\"<br>)<br><br>func main() {<br><br>    data, err := os.ReadFile(\"sample.txt\")<br><br>    if err != nil {<br>        panic(err)<br>    }<br><br>    fmt.Println(string(data))<br>}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d5\u30a1\u30a4\u30eb\u66f8\u304d\u8fbc\u307f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">os.WriteFile<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>package main<br><br>import \"os\"<br><br>func main() {<br><br>    content := &#91;]byte(\"Hello Go\")<br><br>    err := os.WriteFile(<br>        \"sample.txt\",<br>        content,<br>        0644,<br>    )<br><br>    if err != nil {<br>        panic(err)<br>    }<br>}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8ffd\u8a18\u30e2\u30fc\u30c9<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>file, err := os.OpenFile(<br>    \"sample.txt\",<br>    os.O_APPEND|os.O_WRONLY,<br>    0644,<br>)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d5\u30a1\u30a4\u30eb\u4f5c\u6210<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>file, err := os.Create(\"new.txt\")<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u884c\u5358\u4f4d\u3067\u8aad\u307f\u8fbc\u3080<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>scanner := bufio.NewScanner(file)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">CSV\u64cd\u4f5c<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>reader := csv.NewReader(file)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">JSON\u4fdd\u5b58<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>json.NewEncoder(file).Encode(data)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u52d9\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u2714 defer Close<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>defer file.Close()<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2714 \u30d1\u30b9\u7ba1\u7406<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>filepath.Join()<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2714 \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>if err != nil {<br>    return err<br>}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u52d9\u3067\u306e\u5fdc\u7528<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ed\u30b0\u7ba1\u7406<\/li>\n\n\n\n<li>CSV\u30a8\u30af\u30b9\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7<\/li>\n\n\n\n<li>\u30d0\u30c3\u30c1\u51e6\u7406<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u5931\u6557<\/h2>\n\n\n\n<p>\u274c Close\u5fd8\u308c<br>\u274c \u76f8\u5bfe\u30d1\u30b9\u554f\u984c<br>\u274c \u30d5\u30a1\u30a4\u30eb\u6a29\u9650\u30df\u30b9<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>defer Close<\/li>\n\n\n\n<li>filepath\u5229\u7528<\/li>\n\n\n\n<li>Error\u7ba1\u7406<\/li>\n\n\n\n<li>UTF-8\u7d71\u4e00<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udca1 \u7d50\u8ad6<\/h2>\n\n\n\n<p>\ud83d\udc49<br><strong>\u300c\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u306e\u57fa\u672c\u30b9\u30ad\u30eb\u300d<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Go \u3067\u306f\u3001\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u7c21\u5358\u306b\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u30ed\u30b0\u51fa\u529b\u3001CSV\u51e6\u7406\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u7ba1\u7406\u306a\u3069\u3001\u5b9f\u52d9\u958b\u767a\u3067\u306f\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306f\u975e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":522,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"Go\u8a00\u8a9e\u3067\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3092\u521d\u5fc3\u8005\u5411\u3051\u306b\u89e3\u8aac\u3002os.ReadFile\u30fbWriteFile\u3001CSV\u30fbJSON\u64cd\u4f5c\u3001\u30d5\u30a1\u30a4\u30eb\u4f5c\u6210\u3001\u8ffd\u8a18\u30e2\u30fc\u30c9\u306a\u3069\u5b9f\u52d9\u3067\u4f7f\u3048\u308b\u958b\u767a\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002","jetpack_seo_html_title":"Go\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306e\u65b9\u6cd5\uff5c\u8aad\u307f\u8fbc\u307f\u30fb\u66f8\u304d\u8fbc\u307f\u3092\u521d\u5fc3\u8005\u5411\u3051\u306b\u89e3\u8aac","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[6,7],"class_list":["post-521","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-go","tag-go-2","tag-go"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.zeronana.net\/wp-content\/uploads\/2026\/05\/Go\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306e\u65b9\u6cd5.png","_links":{"self":[{"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/posts\/521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=521"}],"version-history":[{"count":1,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions"}],"predecessor-version":[{"id":523,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions\/523"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=\/wp\/v2\/media\/522"}],"wp:attachment":[{"href":"https:\/\/www.zeronana.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeronana.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}