{"id":10006267,"date":"2022-08-21T18:20:02","date_gmt":"2022-08-21T10:20:02","guid":{"rendered":"https:\/\/ityet.com\/?p=10006267"},"modified":"2022-08-21T18:20:02","modified_gmt":"2022-08-21T10:20:02","slug":"%e8%b6%85%e5%85%a8%e6%80%bb%e7%bb%93%ef%bc%9ago%e8%af%ad%e8%a8%80%e5%a6%82%e4%bd%95%e6%93%8d%e4%bd%9c%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006267","title":{"rendered":"\u8d85\u5168\u603b\u7ed3\uff1aGo\u8bed\u8a00\u5982\u4f55\u64cd\u4f5c\u6587\u4ef6"},"content":{"rendered":"<h2>\u524d\u8a00<\/h2>\n<blockquote>\n<p>\u54c8\u55bd\uff0c\u5927\u5bb6\u597d\uff0c\u6211\u662f<code>asong<\/code>\u3002<\/p>\n<p>\u6211\u4eec\u90fd\u77e5\u9053\u5728<code>Unix<\/code>\u4e2d\u4e07\u7269\u90fd\u88ab\u79f0\u4e3a\u6587\u4ef6\uff0c\u6587\u4ef6\u5904\u7406\u662f\u4e00\u4e2a\u975e\u5e38\u5e38\u89c1\u7684\u95ee\u9898\uff0c\u6240\u4ee5\u672c\u6587\u5c31\u603b\u7ed3\u4e86<code>Go<\/code>\u8bed\u8a00\u64cd\u4f5c\u6587\u4ef6\u7684\u5e38\u89c1\u65b9\u5f0f\uff0c\u6574\u4f53\u601d\u8def\u5982\u4e0b\uff1a<\/p>\n<\/blockquote>\n<p><strong>Go\u8bed\u8a00\u7248\u672c\uff1a1.18<\/strong><\/p>\n<p>\u672c\u6587\u6240\u6709\u4ee3\u7801\u5df2\u7ecf\u4e0a\u4f20<code>github<\/code>\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=%2F4Kea879PRpS5z6nQuIRnw%3D%3D.MyYHxJlPh1XeDZz%2BEFfFewdui15hpxUB9LWfo24thMOgXQKCaIcNwz2jrJ2K7yEQi0VpqaxGcB8GKsqgRkzf8yQFPSUUMx%2F96eflB7QgX30hXL7ONsUvRPQJZVz7s11V\" rel=\"nofollow\">https:\/\/github.com\/asong2020\/&#8230;<\/a><\/p>\n<h2>\u64cd\u4f5c\u6587\u4ef6\u5305\u62ec\u54ea\u4e9b<\/h2>\n<p>\u64cd\u4f5c\u4e00\u4e2a\u6587\u4ef6\u79bb\u4e0d\u5f00\u8fd9\u51e0\u4e2a\u52a8\u4f5c\uff1a<\/p>\n<ul>\n<li>\u521b\u5efa\u6587\u4ef6<\/li>\n<li>\u6253\u5f00\u6587\u4ef6<\/li>\n<li>\u8bfb\u53d6\u6587\u4ef6<\/li>\n<li>\u5199\u5165\u6587\u4ef6<\/li>\n<li>\u5173\u95ed\u6587\u4ef6<\/li>\n<li>\u6253\u5305\/\u89e3\u5305<\/li>\n<li>\u538b\u7f29\/\u89e3\u538b\u7f29<\/li>\n<li>\u6539\u53d8\u6587\u4ef6\u6743\u9650<\/li>\n<li>\u5220\u9664\u6587\u4ef6<\/li>\n<li>\u79fb\u52a8\u6587\u4ef6<\/li>\n<li>\u91cd\u547d\u540d\u6587\u4ef6<\/li>\n<li>\u6e05\u7a7a\u6587\u4ef6<\/li>\n<\/ul>\n<p>\u6240\u4ee5\u672c\u6587\u5c31\u9488\u5bf9\u8fd9\u4e9b\u64cd\u4f5c\u603b\u7ed3\u4e86\u4e00\u4e9b\u793a\u4f8b\u65b9\u6cd5\u4f9b\u5927\u5bb6\u53c2\u8003\uff1b<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042353269\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h2>Go\u8bed\u8a00\u64cd\u4f5c\u6587\u4ef6\u53ef\u4f7f\u7528\u7684\u5e93<\/h2>\n<p>Go\u8bed\u8a00\u5b98\u65b9\u5e93\uff1a<code>os<\/code>\u3001<code>io\/ioutil<\/code>\u3001<code>bufio<\/code>\u6db5\u76d6\u4e86\u6587\u4ef6\u64cd\u4f5c\u7684\u6240\u6709\u573a\u666f\uff0c<\/p>\n<p><code>os<\/code>\u63d0\u4f9b\u4e86\u5bf9\u6587\u4ef6<code>IO<\/code>\u76f4\u63a5\u8c03\u7528\u7684\u65b9\u6cd5\uff0c<code>bufio<\/code>\u63d0\u4f9b\u7f13\u51b2\u533a\u64cd\u4f5c\u6587\u4ef6\u7684\u65b9\u6cd5\uff0c<code>io\/ioutil<\/code>\u4e5f\u63d0\u4f9b\u5bf9\u6587\u4ef6<code>IO<\/code>\u76f4\u63a5\u8c03\u7528\u7684\u65b9\u6cd5\uff0c\u4e0d\u8fc7Go\u8bed\u8a00\u5728<code>Go1.16<\/code>\u7248\u672c\u5df2\u7ecf\u5f03\u7528\u4e86<code>io\/ioutil<\/code>\u5e93\uff0c\u8fd9\u4e2a<a href=\"https:\/\/link.segmentfault.com\/?enc=OQMtPWtKgJ3VuDKdmYOmbA%3D%3D.jg4eOPVH1BMgQH7w2aWTiJuooSkhCZagQn61dyMNqpQ%3D\" rel=\"nofollow\"><code>io\/ioutil<\/code><\/a>\u5305\u662f\u4e00\u4e2a\u5b9a\u4e49\u4e0d\u660e\u786e\u4e14\u96be\u4ee5\u7406\u89e3\u7684\u4e1c\u897f\u96c6\u5408\u3002\u8be5\u8f6f\u4ef6\u5305\u63d0\u4f9b\u7684\u6240\u6709\u529f\u80fd\u90fd\u5df2\u79fb\u81f3\u5176\u4ed6\u8f6f\u4ef6\u5305\uff0c\u6240\u4ee5<code>io\/ioutil<\/code>\u4e2d\u64cd\u4f5c\u6587\u4ef6\u7684\u65b9\u6cd5\u90fd\u5728<code>io<\/code>\u5e93\u6709\u76f8\u540c\u542b\u4e49\u7684\u65b9\u6cd5\uff0c\u5927\u5bb6\u4ee5\u540e\u5728\u4f7f\u7528\u5230ioutil\u4e2d\u7684\u65b9\u6cd5\u662f\u53ef\u4ee5\u901a\u8fc7\u6ce8\u91ca\u5728\u5176\u4ed6\u5305\u627e\u5230\u5bf9\u5e94\u7684\u65b9\u6cd5\u3002<\/p>\n<h2>\u6587\u4ef6\u7684\u57fa\u7840\u64cd\u4f5c<\/h2>\n<p>\u8fd9\u91cc\u6211\u628a \u521b\u5efa\u6587\u4ef6\u3001\u6253\u5f00\u6587\u4ef6\u3001\u5173\u95ed\u6587\u4ef6\u3001\u6539\u53d8\u6587\u4ef6\u6743\u9650\u8fd9\u4e9b\u5f52\u4e3a\u5bf9\u6587\u4ef6\u7684\u57fa\u672c\u64cd\u4f5c\uff0c\u5bf9\u6587\u4ef6\u7684\u57fa\u672c\u64cd\u4f5c\u76f4\u63a5\u4f7f\u7528<code>os<\/code>\u5e93\u4e2d\u7684\u65b9\u6cd5\u5373\u53ef\uff0c\u56e0\u4e3a\u6211\u4eec\u9700\u8981\u8fdb\u884c<code>IO<\/code>\u64cd\u4f5c\uff0c\u6765\u770b\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"go\">import (\n    &quot;log&quot;\n    &quot;os&quot;\n)\nfunc main() {\n    \/\/ \u521b\u5efa\u6587\u4ef6\n    f, err := os.Create(&quot;asong.txt&quot;)\n    if err != nil{\n        log.Fatalf(&quot;create file failed err=%s\/n&quot;, err)\n    }\n    \/\/ \u83b7\u53d6\u6587\u4ef6\u4fe1\u606f\n    fileInfo, err := f.Stat()\n    if err != nil{\n        log.Fatalf(&quot;get file info failed err=%s\/n&quot;, err)\n    }\n\n    log.Printf(&quot;File Name is %s\/n&quot;, fileInfo.Name())\n    log.Printf(&quot;File Permissions is %s\/n&quot;, fileInfo.Mode())\n    log.Printf(&quot;File ModTime is %s\/n&quot;, fileInfo.ModTime())\n\n    \/\/ \u6539\u53d8\u6587\u4ef6\u6743\u9650\n    err = f.Chmod(0777)\n    if err != nil{\n        log.Fatalf(&quot;chmod file failed err=%s\/n&quot;, err)\n    }\n\n    \/\/ \u6539\u53d8\u62e5\u6709\u8005\n    err = f.Chown(os.Getuid(), os.Getgid())\n    if err != nil{\n        log.Fatalf(&quot;chown file failed err=%s\/n&quot;, err)\n    }\n\n    \/\/ \u518d\u6b21\u83b7\u53d6\u6587\u4ef6\u4fe1\u606f \u9a8c\u8bc1\u6539\u53d8\u662f\u5426\u6b63\u786e\n    fileInfo, err = f.Stat()\n    if err != nil{\n        log.Fatalf(&quot;get file info second failed err=%s\/n&quot;, err)\n    }\n    log.Printf(&quot;File change Permissions is %s\/n&quot;, fileInfo.Mode())\n\n    \/\/ \u5173\u95ed\u6587\u4ef6\n    err = f.Close()\n    if err != nil{\n        log.Fatalf(&quot;close file failed err=%s\/n&quot;, err)\n    }\n    \n    \/\/ \u5220\u9664\u6587\u4ef6\n    err = os.Remove(&quot;asong.txt&quot;)\n    if err != nil{\n        log.Fatalf(&quot;remove file failed err=%s\/n&quot;, err)\n    }\n}<\/code><\/pre>\n<h2>\u5199\u6587\u4ef6<\/h2>\n<h3>\u5feb\u5199\u6587\u4ef6<\/h3>\n<p><code>os<\/code>\/<code>ioutil<\/code>\u5305\u90fd\u63d0\u4f9b\u4e86<code>WriteFile<\/code>\u65b9\u6cd5\u53ef\u4ee5\u5feb\u901f\u5904\u7406\u521b\u5efa\/\u6253\u5f00\u6587\u4ef6\/\u5199\u6570\u636e\/\u5173\u95ed\u6587\u4ef6\uff0c\u4f7f\u7528\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"go\">func writeAll(filename string) error {\n    err := os.WriteFile(&quot;asong.txt&quot;, []byte(&quot;Hi asong\/n&quot;), 0666)\n    if err != nil {\n        return err\n    }\n    return nil\n}<\/code><\/pre>\n<h3>\u6309\u884c\u5199\u6587\u4ef6<\/h3>\n<p><code>os<\/code>\u3001<code>buffo<\/code>\u5199\u6570\u636e\u90fd\u6ca1\u6709\u63d0\u4f9b\u6309\u884c\u5199\u5165\u7684\u65b9\u6cd5\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5728\u8c03\u7528<code>os.WriteString<\/code>\u3001<code>bufio.WriteString<\/code>\u65b9\u6cd5\u662f\u5728\u6570\u636e\u4e2d\u52a0\u5165\u6362\u884c\u7b26\u5373\u53ef\uff0c\u6765\u770b\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"go\">import (\n    &quot;bufio&quot;\n    &quot;log&quot;\n    &quot;os&quot;\n)\n\/\/ \u76f4\u63a5\u64cd\u4f5cIO\nfunc writeLine(filename string) error {\n    data := []string{\n        &quot;asong&quot;,\n        &quot;test&quot;,\n        &quot;123&quot;,\n    }\n    f, err := os.OpenFile(filename, os.O_WRONLY, 0666)\n    if err != nil{\n        return err\n    }\n\n    for _, line := range data{\n        _,err := f.WriteString(line + &quot;\/n&quot;)\n        if err != nil{\n            return err\n        }\n    }\n    f.Close()\n    return nil\n}\n\/\/ \u4f7f\u7528\u7f13\u5b58\u533a\u5199\u5165\nfunc writeLine2(filename string) error {\n    file, err := os.OpenFile(filename, os.O_WRONLY, 0666)\n    if err != nil {\n        return err\n    }\n\n    \/\/ \u4e3a\u8fd9\u4e2a\u6587\u4ef6\u521b\u5efabuffered writer\n    bufferedWriter := bufio.NewWriter(file)\n    \n    for i:=0; i &lt; 2; i++{\n        \/\/ \u5199\u5b57\u7b26\u4e32\u5230buffer\n        bytesWritten, err := bufferedWriter.WriteString(\n            &quot;asong\u771f\u5e05\/n&quot;,\n        )\n        if err != nil {\n            return err\n        }\n        log.Printf(&quot;Bytes written: %d\/n&quot;, bytesWritten)\n    }\n    \/\/ \u5199\u5185\u5b58buffer\u5230\u786c\u76d8\n    err = bufferedWriter.Flush()\n    if err != nil{\n        return err\n    }\n\n    file.Close()\n    return nil\n}<\/code><\/pre>\n<h3>\u504f\u79fb\u91cf\u5199\u5165<\/h3>\n<p>\u67d0\u4e9b\u573a\u666f\u6211\u4eec\u60f3\u6839\u636e\u7ed9\u5b9a\u7684\u504f\u79fb\u91cf\u5199\u5165\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528<code>os<\/code>\u4e2d\u7684<code>writeAt<\/code>\u65b9\u6cd5\uff0c\u4f8b\u5b50\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"go\">import &quot;os&quot;\n\nfunc writeAt(filename string) error {\n    data := []byte{\n        0x41, \/\/ A\n        0x73, \/\/ s\n        0x20, \/\/ space\n        0x20, \/\/ space\n        0x67, \/\/ g\n    }\n    f, err := os.OpenFile(filename, os.O_WRONLY, 0666)\n    if err != nil{\n        return err\n    }\n    _, err = f.Write(data)\n    if err != nil{\n        return err\n    }\n\n    replaceSplace := []byte{\n        0x6F, \/\/ o\n        0x6E, \/\/ n\n    }\n    _, err = f.WriteAt(replaceSplace, 2)\n    if err != nil{\n        return err\n    }\n    f.Close()\n    return nil\n}<\/code><\/pre>\n<h3>\u7f13\u5b58\u533a\u5199\u5165<\/h3>\n<p><code>os<\/code>\u5e93\u4e2d\u7684\u65b9\u6cd5\u5bf9\u6587\u4ef6\u90fd\u662f\u76f4\u63a5\u7684<code>IO<\/code>\u64cd\u4f5c\uff0c\u9891\u7e41\u7684<code>IO<\/code>\u64cd\u4f5c\u4f1a\u589e\u52a0<code>CPU<\/code>\u7684\u4e2d\u65ad\u9891\u7387\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5185\u5b58\u7f13\u5b58\u533a\u6765\u51cf\u5c11<code>IO<\/code>\u64cd\u4f5c\uff0c\u5728\u5199\u5b57\u8282\u5230\u786c\u76d8\u524d\u4f7f\u7528\u5185\u5b58\u7f13\u5b58\uff0c\u5f53\u5185\u5b58\u7f13\u5b58\u533a\u7684\u5bb9\u91cf\u5230\u8fbe\u4e00\u5b9a\u6570\u503c\u65f6\u5728\u5199\u5185\u5b58\u6570\u636ebuffer\u5230\u786c\u76d8\uff0c<code>bufio<\/code>\u5c31\u662f\u8fd9\u6837\u793a\u4e00\u4e2a\u5e93\uff0c\u6765\u4e2a\u4f8b\u5b50\u6211\u4eec\u770b\u4e00\u4e0b\u600e\u4e48\u4f7f\u7528\uff1a<\/p>\n<pre><code class=\"go\">import (\n    &quot;bufio&quot;\n    &quot;log&quot;\n    &quot;os&quot;\n)\n\nfunc writeBuffer(filename string) error {\n    file, err := os.OpenFile(filename, os.O_WRONLY, 0666)\n    if err != nil {\n        return err\n    }\n\n    \/\/ \u4e3a\u8fd9\u4e2a\u6587\u4ef6\u521b\u5efabuffered writer\n    bufferedWriter := bufio.NewWriter(file)\n\n    \/\/ \u5199\u5b57\u7b26\u4e32\u5230buffer\n    bytesWritten, err := bufferedWriter.WriteString(\n        &quot;asong\u771f\u5e05\/n&quot;,\n    )\n    if err != nil {\n        return err\n    }\n    log.Printf(&quot;Bytes written: %d\/n&quot;, bytesWritten)\n\n    \/\/ \u68c0\u67e5\u7f13\u5b58\u4e2d\u7684\u5b57\u8282\u6570\n    unflushedBufferSize := bufferedWriter.Buffered()\n    log.Printf(&quot;Bytes buffered: %d\/n&quot;, unflushedBufferSize)\n\n    \/\/ \u8fd8\u6709\u591a\u5c11\u5b57\u8282\u53ef\u7528\uff08\u672a\u4f7f\u7528\u7684\u7f13\u5b58\u5927\u5c0f\uff09\n    bytesAvailable := bufferedWriter.Available()\n    if err != nil {\n        return err\n    }\n    log.Printf(&quot;Available buffer: %d\/n&quot;, bytesAvailable)\n    \/\/ \u5199\u5185\u5b58buffer\u5230\u786c\u76d8\n    err = bufferedWriter.Flush()\n    if err != nil{\n        return err\n    }\n\n    file.Close()\n    return nil\n}<\/code><\/pre>\n<h2>\u8bfb\u6587\u4ef6<\/h2>\n<h3>\u8bfb\u53d6\u5168\u6587\u4ef6<\/h3>\n<p>\u6709\u4e24\u79cd\u65b9\u5f0f\u6211\u4eec\u53ef\u4ee5\u8bfb\u53d6\u5168\u6587\u4ef6\uff1a<\/p>\n<ul>\n<li><code>os<\/code>\u3001<code>io\/ioutil<\/code>\u4e2d\u63d0\u4f9b\u4e86<code>readFile<\/code>\u65b9\u6cd5\u53ef\u4ee5\u5feb\u901f\u8bfb\u53d6\u5168\u6587<\/li>\n<li><code>io\/ioutil<\/code>\u4e2d\u63d0\u4f9b\u4e86<code>ReadAll<\/code>\u65b9\u6cd5\u5728\u6253\u5f00\u6587\u4ef6\u53e5\u67c4\u540e\u53ef\u4ee5\u8bfb\u53d6\u5168\u6587\uff1b<\/li>\n<\/ul>\n<pre><code class=\"go\">import (\n    &quot;io\/ioutil&quot;\n    &quot;log&quot;\n    &quot;os&quot;\n)\n\nfunc readAll(filename string) error {\n    data, err := os.ReadFile(filename)\n    if err != nil {\n        return err\n    }\n    log.Printf(&quot;read %s content is %s&quot;, filename, data)\n    return nil\n}\n\nfunc ReadAll2(filename string) error {\n    file, err := os.Open(&quot;asong.txt&quot;)\n    if err != nil {\n        return err\n    }\n\n    content, err := ioutil.ReadAll(file)\n    log.Printf(&quot;read %s content is %s\/n&quot;, filename, content)\n\n    file.Close()\n    return nil\n}<\/code><\/pre>\n<h3>\u9010\u884c\u8bfb\u53d6<\/h3>\n<p><code>os<\/code>\u5e93\u4e2d\u63d0\u4f9b\u4e86<code>Read<\/code>\u65b9\u6cd5\u662f\u6309\u7167\u5b57\u8282\u957f\u5ea6\u8bfb\u53d6\uff0c\u5982\u679c\u6211\u4eec\u60f3\u8981\u6309\u884c\u8bfb\u53d6\u6587\u4ef6\u9700\u8981\u914d\u5408<code>bufio<\/code>\u4e00\u8d77\u4f7f\u7528\uff0c<code>bufio<\/code>\u4e2d\u63d0\u4f9b\u4e86\u4e09\u79cd\u65b9\u6cd5<code>ReadLine<\/code>\u3001<code>ReadBytes(&quot;\/n&quot;)<\/code>\u3001<code>ReadString(&quot;\/n&quot;)<\/code>\u53ef\u4ee5\u6309\u884c\u8bfb\u53d6\u6570\u636e\uff0c\u4e0b\u9762\u6211\u4f7f\u7528<code>ReadBytes(&quot;\/n&quot;)<\/code>\u6765\u5199\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"go\">func readLine(filename string) error {\n    file, err := os.OpenFile(filename, os.O_RDONLY, 0666)\n    if err != nil {\n        return err\n    }\n    bufferedReader := bufio.NewReader(file)\n    for {\n        \/\/ ReadLine is a low-level line-reading primitive. Most callers should use\n        \/\/ ReadBytes('\/n') or ReadString('\/n') instead or use a Scanner.\n        lineBytes, err := bufferedReader.ReadBytes('\/n')\n        bufferedReader.ReadLine()\n        line := strings.TrimSpace(string(lineBytes))\n        if err != nil &amp;&amp; err != io.EOF {\n            return err\n        }\n        if err == io.EOF {\n            break\n        }\n        log.Printf(&quot;readline %s every line data is %s\/n&quot;, filename, line)\n    }\n    file.Close()\n    return nil\n}<\/code><\/pre>\n<h3>\u6309\u5757\u8bfb\u53d6\u6587\u4ef6<\/h3>\n<p>\u6709\u4e9b\u573a\u666f\u6211\u4eec\u60f3\u6309\u7167\u5b57\u8282\u957f\u5ea6\u8bfb\u53d6\u6587\u4ef6\uff0c\u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u5982\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><code>os<\/code>\u5e93\u7684<code>Read<\/code>\u65b9\u6cd5<\/li>\n<li><code>os<\/code>\u5e93\u914d\u5408<code>bufio.NewReader<\/code>\u8c03\u7528<code>Read<\/code>\u65b9\u6cd5<\/li>\n<li><code>os<\/code>\u5e93\u914d\u5408<code>io<\/code>\u5e93\u7684<code>ReadFull<\/code>\u3001<code>ReadAtLeast<\/code>\u65b9\u6cd5<\/li>\n<\/ul>\n<pre><code class=\"go\">\/\/ use bufio.NewReader\nfunc readByte(filename string) error {\n    file, err := os.OpenFile(filename, os.O_RDONLY, 0666)\n    if err != nil {\n        return err\n    }\n    \/\/ \u521b\u5efa Reader\n    r := bufio.NewReader(file)\n\n    \/\/ \u6bcf\u6b21\u8bfb\u53d6 2 \u4e2a\u5b57\u8282\n    buf := make([]byte, 2)\n    for {\n        n, err := r.Read(buf)\n        if err != nil &amp;&amp; err != io.EOF {\n            return err\n        }\n\n        if n == 0 {\n            break\n        }\n        log.Printf(&quot;writeByte %s every read 2 byte is %s\/n&quot;, filename, string(buf[:n]))\n    }\n    file.Close()\n    return nil\n}\n\n\/\/ use os\nfunc readByte2(filename string) error{\n    file, err := os.OpenFile(filename, os.O_RDONLY, 0666)\n    if err != nil {\n        return err\n    }\n\n    \/\/ \u6bcf\u6b21\u8bfb\u53d6 2 \u4e2a\u5b57\u8282\n    buf := make([]byte, 2)\n    for {\n        n, err := file.Read(buf)\n        if err != nil &amp;&amp; err != io.EOF {\n            return err\n        }\n\n        if n == 0 {\n            break\n        }\n        log.Printf(&quot;writeByte %s every read 2 byte is %s\/n&quot;, filename, string(buf[:n]))\n    }\n    file.Close()\n    return nil\n}\n\n\n\/\/ use os and io.ReadAtLeast\nfunc readByte3(filename string) error{\n    file, err := os.OpenFile(filename, os.O_RDONLY, 0666)\n    if err != nil {\n        return err\n    }\n\n    \/\/ \u6bcf\u6b21\u8bfb\u53d6 2 \u4e2a\u5b57\u8282\n    buf := make([]byte, 2)\n    for {\n        n, err := io.ReadAtLeast(file, buf, 0)\n        if err != nil &amp;&amp; err != io.EOF {\n            return err\n        }\n\n        if n == 0 {\n            break\n        }\n        log.Printf(&quot;writeByte %s every read 2 byte is %s\/n&quot;, filename, string(buf[:n]))\n    }\n    file.Close()\n    return nil\n}<\/code><\/pre>\n<h3>\u5206\u9694\u7b26\u8bfb\u53d6<\/h3>\n<p><code>bufio<\/code>\u5305\u4e2d\u63d0\u4f9b\u4e86<code>Scanner<\/code>\u626b\u63cf\u5668\u6a21\u5757\uff0c\u5b83\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u628a\u6570\u636e\u6d41\u5206\u5272\u6210\u4e00\u4e2a\u4e2a\u6807\u8bb0\u5e76\u9664\u53bb\u5b83\u4eec\u4e4b\u95f4\u7684\u7a7a\u683c\uff0c\u4ed6\u652f\u6301\u6211\u4eec\u5b9a\u5236<code>Split<\/code>\u51fd\u6570\u505a\u4e3a\u5206\u9694\u51fd\u6570\uff0c\u5206\u9694\u7b26\u53ef\u4ee5\u4e0d\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u5b57\u8282\u6216\u8005\u5b57\u7b26\uff0c\u6211\u4eec\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5206\u9694\u51fd\u6570\uff0c\u5728\u5206\u9694\u51fd\u6570\u5b9e\u73b0\u5206\u9694\u89c4\u5219\u4ee5\u53ca\u6307\u9488\u79fb\u52a8\u591a\u5c11\uff0c\u8fd4\u56de\u4ec0\u4e48\u6570\u636e\uff0c\u5982\u679c\u6ca1\u6709\u5b9a\u5236<code>Split<\/code>\u51fd\u6570\uff0c\u90a3\u4e48\u5c31\u4f1a\u4f7f\u7528\u9ed8\u8ba4<code>ScanLines<\/code>\u4f5c\u4e3a\u5206\u9694\u51fd\u6570\uff0c\u4e5f\u5c31\u662f\u4f7f\u7528\u6362\u884c\u4f5c\u4e3a\u5206\u9694\u7b26\uff0c<code>bufio<\/code>\u4e2d\u8fd8\u63d0\u4f9b\u4e86\u9ed8\u8ba4\u65b9\u6cd5<code>ScanRunes<\/code>\u3001<code>ScanWrods<\/code>\uff0c\u4e0b\u9762\u6211\u4eec\u7528<code>SacnWrods<\/code>\u65b9\u6cd5\u5199\u4e2a\u4f8b\u5b50\uff0c\u83b7\u53d6\u7528\u7a7a\u683c\u5206\u9694\u7684\u6587\u672c\uff1a<\/p>\n<pre><code class=\"go\">func readScanner(filename string) error {\n    file, err := os.OpenFile(filename, os.O_RDONLY, 0666)\n    if err != nil {\n        return err\n    }\n\n    scanner := bufio.NewScanner(file)\n    \/\/ \u53ef\u4ee5\u5b9a\u5236Split\u51fd\u6570\u505a\u5206\u9694\u51fd\u6570\n    \/\/ ScanWords \u662fscanner\u81ea\u5e26\u7684\u5206\u9694\u51fd\u6570\u7528\u6765\u627e\u7a7a\u683c\u5206\u9694\u7684\u6587\u672c\u5b57\n    scanner.Split(bufio.ScanWords)\n    for {\n        success := scanner.Scan()\n        if success == false {\n            \/\/ \u51fa\u73b0\u9519\u8bef\u6216\u8005EOF\u662f\u8fd4\u56deError\n            err = scanner.Err()\n            if err == nil {\n                log.Println(&quot;Scan completed and reached EOF&quot;)\n                break\n            } else {\n                return err\n            }\n        }\n        \/\/ \u5f97\u5230\u6570\u636e\uff0cBytes() \u6216\u8005 Text()\n        log.Printf(&quot;readScanner get data is %s&quot;, scanner.Text())\n    }\n    file.Close()\n    return nil\n}<\/code><\/pre>\n<h2>\u6253\u5305\/\u89e3\u5305<\/h2>\n<p>Go\u8bed\u8a00\u7684<code>archive<\/code>\u5305\u4e2d\u63d0\u4f9b\u4e86<code>tar<\/code>\u3001<code>zip<\/code>\u4e24\u79cd\u6253\u5305\/\u89e3\u5305\u65b9\u6cd5\uff0c\u8fd9\u91cc\u4ee5<code>zip<\/code>\u7684\u6253\u5305\/\u89e3\u5305\u4e3a\u4f8b\u5b50\uff1a<\/p>\n<p><code>zip<\/code>\u89e3\u5305\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"go\">import (\n    &quot;archive\/zip&quot;\n    &quot;fmt&quot;\n    &quot;io&quot;\n    &quot;log&quot;\n    &quot;os&quot;\n)\n\nfunc main()  {\n    \/\/ Open a zip archive for reading.\n    r, err := zip.OpenReader(&quot;asong.zip&quot;)\n    if err != nil {\n        log.Fatal(err)\n    }\n    defer r.Close()\n    \/\/ Iterate through the files in the archive,\n    \/\/ printing some of their contents.\n    for _, f := range r.File {\n        fmt.Printf(&quot;Contents of %s:\/n&quot;, f.Name)\n        rc, err := f.Open()\n        if err != nil {\n            log.Fatal(err)\n        }\n        _, err = io.CopyN(os.Stdout, rc, 68)\n        if err != nil {\n            log.Fatal(err)\n        }\n        rc.Close()\n    }\n}<\/code><\/pre>\n<p><code>zip<\/code>\u6253\u5305\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"go\">func writerZip()  {\n    \/\/ Create archive\n    zipPath := &quot;out.zip&quot;\n    zipFile, err := os.Create(zipPath)\n    if err != nil {\n        log.Fatal(err)\n    }\n\n    \/\/ Create a new zip archive.\n    w := zip.NewWriter(zipFile)\n    \/\/ Add some files to the archive.\n    var files = []struct {\n        Name, Body string\n    }{\n        {&quot;asong.txt&quot;, &quot;This archive contains some text files.&quot;},\n        {&quot;todo.txt&quot;, &quot;Get animal handling licence.\/nWrite more examples.&quot;},\n    }\n    for _, file := range files {\n        f, err := w.Create(file.Name)\n        if err != nil {\n            log.Fatal(err)\n        }\n        _, err = f.Write([]byte(file.Body))\n        if err != nil {\n            log.Fatal(err)\n        }\n    }\n    \/\/ Make sure to check the error on Close.\n    err = w.Close()\n    if err != nil {\n        log.Fatal(err)\n    }\n}<\/code><\/pre>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u672c\u6587\u5f52\u6839\u7ed3\u5e95\u662f\u4ecb\u7ecd<code>os<\/code>\u3001<code>io<\/code>\u3001<code>bufio<\/code>\u8fd9\u4e9b\u5305\u5982\u4f55\u64cd\u4f5c\u6587\u4ef6\uff0c\u56e0\u4e3a<code>Go<\/code>\u8bed\u8a00\u64cd\u4f5c\u63d0\u4f9b\u4e86\u592a\u591a\u4e86\u65b9\u6cd5\uff0c\u501f\u7740\u672c\u6587\u5168\u90fd\u4ecb\u7ecd\u51fa\u6765\uff0c\u5728\u4f7f\u7528\u7684\u65f6\u5019\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u5f53\u4f5c\u6587\u6863\u67e5\u8be2\uff0c\u5982\u679c\u4f60\u95ee\u7528\u4ec0\u4e48\u65b9\u6cd5\u64cd\u4f5c\u6587\u4ef6\u662f\u6700\u4f18\u7684\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u6211\u4e5f\u6ca1\u6cd5\u56de\u7b54\u4f60\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u573a\u666f\u5206\u6790\u7684\uff0c\u5982\u679c\u8fd9\u4e9b\u65b9\u6cd5\u4f60\u90fd\u77e5\u9053\u4e86\uff0c\u5728\u5199\u4e00\u4e2abenchmark\u5bf9\u6bd4\u4e00\u4e0b\u5c31\u53ef\u4ee5\u4e86\uff0c\u5b9e\u8df5\u624d\u662f\u68c0\u9a8c\u771f\u7406\u7684\u552f\u4e00\u6807\u51c6\u3002<\/p>\n<p>\u672c\u6587\u6240\u6709\u4ee3\u7801\u5df2\u7ecf\u4e0a\u4f20<code>github<\/code>\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=QJwMkMxZ9Ix%2FwfO1YRVD4g%3D%3D.DftxbG4quzJp14HJnZBWlaYzWk5tY7dXpEkU9SA8gG82qJk3J7iBnJEjyJo5oZlU0shdfsQL%2B2aecfjSwGef%2FiQP0S8QQIbz3WZv6VpIStZRYqqG8K%2BStghQot23%2FWFt\" rel=\"nofollow\">https:\/\/github.com\/asong2020\/&#8230;<\/a><\/p>\n<p>\u597d\u5566\uff0c\u672c\u6587\u5230\u8fd9\u91cc\u5c31\u7ed3\u675f\u4e86\uff0c\u6211\u662f<strong>asong<\/strong>\uff0c\u6211\u4eec\u4e0b\u671f\u89c1\u3002<\/p>\n<p><strong>\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff1aGolang\u68a6\u5de5\u5382<\/strong><\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042353267\">https:\/\/segmentfault.com\/a\/1190000042353267<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u54c8\u55bd\uff0c\u5927\u5bb6\u597d\uff0c\u6211\u662fasong\u3002 \u6211\u4eec\u90fd\u77e5\u9053\u5728Unix\u4e2d\u4e07\u7269\u90fd\u88ab\u79f0\u4e3a\u6587\u4ef6\uff0c\u6587\u4ef6\u5904\u7406\u662f\u4e00\u4e2a\u975e\u5e38\u5e38\u89c1\u7684\u95ee\u9898\uff0c\u6240 [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006267","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006267","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006267"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006267\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006267"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}