打开文件：没有这样的文件或目录。

huangapple
go评论126阅读模式
英文:

go - open file no such file or directory

问题

我写了一个包装函数来渲染模板，代码如下：

  1. func RenderTemplate(w http.ResponseWriter, data interface{}, tmpl... string) {
  2.     cwd, _ := os.Getwd()
  3.     for _ , file := range tmpl{
  4.         file = filepath.Join(cwd,"./view/"+file+".html")
  5.     }
  6.     t, err := template.ParseFiles(tmpl...)
  7.     if err != nil {
  8.         http.Error(w, err.Error(), http.StatusInternalServerError)
  9.         return
  10.     }
  11.     err = t.Execute(w, data)
  12.     if err != nil {
  13.         http.Error(w, err.Error(), http.StatusInternalServerError)
  14.     }
  15. }

我在 main 函数中设置了静态文件夹和路由处理程序：

  1. http.Handle("/public/", http.StripPrefix("/public/", http.FileServer(http.Dir("public"))))
  2. http.HandleFunc("/", route.IndexHandler)

这是我的路由处理程序：

  1. func IndexHandler(w http.ResponseWriter, r *http.Request) {
  2.     files := []string{"base", "index"}
  3.     util.RenderTemplate(w, nil, files...)
  4. }

我打算使用模板嵌套来帮助 index.html 扩展 base.html。

这是 base.html 的内容：

  1. {{define "base"}}
  2. <!DOCTYPE html>
  3. <html>
  4. <head>
  5.     <meta charset="utf-8">
  6.     <title>{{template "title" .}}</title>
  7.     <script type="text/javascript" src="https://code.jquery.com/jquery-2.2.0.min.js"></script>
  8.     <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
  9.     <script type="text/javascript" src="/js/isotope.pkgd.min.js"></script>
  10.     <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
  11.     <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
  12.     <link rel="stylesheet" type="text/css" href="/css/style.css">
  13. </head>
  14. <body>
  15.     {{template "index" .}}
  16. </body>
  17. </html>
  18. {{end}}

这是 index.html 的内容：

  1. <!DOCTYPE html>
  2. <html>
  3. {{define "title"}}Homepage{{end}}
  4. <body>
  5.     {{define "index"}}
  6.     <div class="wrapper">
  7.         <div class="page-content">
  8.             <div class="container">
  9.                 <div class="left">
  10.                     <img src="../public/images/img_landing_page_mac.png">
  11.                 </div>
  12.                 <div class="right">
  13.                     <h2 style="font-size: 33px; letter-spacing: 5px">Organize <br>Modern Knowledge<br> for Mankind</h2>
  14.                     <p style="font-size: 20px;margin-top: 35px;letter-spacing: 4px">Consume, Colect and Revisit <br>Knowledge at Your Fingertips</p>
  15.                     <a href="#" style="margin-top: 80px;display: inline-block;margin-left: -17px"><img src="../public/images/btn_get_chrome.png"></a>
  16.                 </div>
  17.             </div>
  18.         </div>
  19.     </div>
  20.     {{end}}
  21. </body>
  22. </html>

但是当我运行服务器并在浏览器上请求路径时，显示出错信息 open base: no such file or directory。我的渲染函数有问题吗？

英文:

I write a wrapper function to render template like this

  1. func RenderTemplate(w http.ResponseWriter, data interface{}, tmpl... string) {
  2.     cwd, _ := os.Getwd()
  3.     for _ , file := range tmpl{
  4.         file = filepath.Join(cwd,&quot;./view/&quot;+file+&quot;.html&quot;)
  5.     }
  6.     t, err := template.ParseFiles(tmpl...)
  7.     if err != nil {
  8.         http.Error(w, err.Error(), http.StatusInternalServerError)
  9.         return
  10.     }
  11.     err = t.Execute(w, data)
  12.     if err != nil {
  13.         http.Error(w, err.Error(), http.StatusInternalServerError)
  14.     }
  15. }

I setup static folder and route handler in main

  1. http.Handle(&quot;/public/&quot;,http.StripPrefix(&quot;/public/&quot;,http.FileServer(http.Dir(&quot;public&quot;))))
  3. http.HandleFunc(&quot;/&quot;,route.IndexHandler)

And this is my route handler

  1. func IndexHandler(w http.ResponseWriter, r *http.Request) {
  2. 	files:=[]string{&quot;base&quot;,&quot;index&quot;}
  3. 	util.RenderTemplate(w, nil, files...)
  4. }

I intend to use template nesting to help index.html extend base.html

This is base.html

  1. {{define &quot;base&quot;}}
  2. &lt;!DOCTYPE html&gt;
  3. &lt;html&gt;
  4. &lt;head&gt;
  5. 	&lt;meta charget=&quot;utf-8&quot;&gt;
  6. 	&lt;title&gt;{{template &quot;title&quot;.}}&lt;/title&gt;
  7. 	&lt;script type=&quot;text/javascript&quot; src=&quot;https://code.jquery.com/jquery-2.2.0.min.js&quot;&gt;&lt;/script&gt;
  8. 	&lt;script type=&quot;text/javascript&quot; src=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;
  9. 	&lt;script type=&quot;text/javascript&quot; src=&quot;/js/isotope.pkgd.min.js&quot;&gt;&lt;/script&gt;
  10. 	&lt;link rel=&quot;stylesheet&quot; type=&quot;text/css&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css&quot;&gt;
  11. 	&lt;link rel=&quot;stylesheet&quot; type=&quot;text/css&quot; href=&quot;https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css&quot;&gt;
  12. 	&lt;link rel=&quot;stylesheet&quot; type=&quot;text/css&quot; href=&quot;/css/style.css&quot;&gt;
  13. &lt;/head&gt;
  14. &lt;body&gt;
  15. 	{{template &quot;index&quot;.}}
  16. &lt;/body&gt;
  17. &lt;/html&gt;
  18. {{end}}

This is index.html

  1. &lt;!DOCTYPE html&gt;
  2. &lt;html&gt;
  3. {{define &quot;title&quot;}}Homepage{{end}}
  4. &lt;body&gt;
  5. 	{{define &quot;index&quot;}}
  6. 	&lt;div class=&quot;wrapper&quot;&gt;
  7. 		&lt;div class=&quot;page-content&quot;&gt;
  8. 			&lt;div class=&quot;container&quot;&gt;
  9. 				&lt;div class=&quot;left&quot;&gt;
  10. 					&lt;img src=&quot;../public/images/img_landing_page_mac.png&quot;&gt;
  11. 				&lt;/div&gt;
  12. 				&lt;div class=&quot;right&quot;&gt;
  13. 					&lt;h2 style=&quot;font-size: 33px; letter-spacing: 5px&quot;&gt;Organize &lt;br&gt;Modern Knowledge&lt;br&gt; for Mankind&lt;/h2&gt;
  14. 					&lt;p style=&quot;font-size: 20px;margin-top: 35px;letter-spacing: 4px&quot;&gt;Consume, Colect and Revisit &lt;br&gt;Knowledge at Your Fingertips&lt;/p&gt;
  15. 					&lt;a href=&quot;#&quot; style=&quot;margin-top: 80px;display: inline-block;margin-left: -17px&quot;&gt;&lt;img src=&quot;../public/images/btn_get_chrome.png&quot;&gt;&lt;/a&gt;
  16. 				&lt;/div&gt;
  17. 			&lt;/div&gt;
  18. 		&lt;/div&gt;
  19. 	&lt;/div&gt;
  20. 	{{end}}
  21. &lt;/body&gt;
  22. &lt;/html&gt;

But when I run server, and request the path on browser, it displays an error

open base: no such file or directory

Something's wrong with my rendering function?

答案1

得分: 1

t, err := template.ParseFiles(tmpl...)

我猜测 tmpl 不是一个文件路径 打开文件：没有这样的文件或目录。
我猜测你想要像这样做：

files := make([]string, len(tmpl))
for i, file := range tmpl{
files[i] = filepath.Join(cwd, "./view/"+file+".html")
}
t, err := template.ParseFiles(files...)

英文: 
  1. t, err := template.ParseFiles(tmpl...)

I guess `tmpl' seems not a filepath :(<br >
I guess you wanna like this.

  1. files := make([]string, len(tmpl))
  2. for i, file := range tmpl{
  3.     files[i] = appendfilepath.Join(cwd,&quot;./view/&quot;+file+&quot;.html&quot;)
  4. }
  5. t, err := template.ParseFiles(files...)

huangapple
  • 本文由 发表于 2016年3月10日 08:22:55
  • 转载请务必保留本文链接：https://go.coder-hub.com/35905338.html
  • file
  • go
  • html
  • render
  • template-engine
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