Go 1.16 embed特性的简单应用

项目结构如下:

1└─ui
2    └─embed_ui.go
3    └─dist
4        └─index.html
5        └─static
6            ├─css
7                └─ ...
8            ├─fonts
9                └─ ...
10            └─js
11                └─ ...
12└─main.go
13└─go.mod
14
15
16//embed_ui.go
17package ui
18
19import (
20	`embed`
21)
22
23//go:embed dist
24var WebUI embed.FS
25
26
27//main.go
28// 嵌入普通静态资源
29type StaticResource struct {
30	// 静态资源
31	staticFS embed.FS
32	// 设置embed文件到静态资源的相对路径，也就是embed注释里的路径
33	path string
34}
35// 静态资源被访问逻辑
36func (_this_ *StaticResource) Open(name string) (fs.File, error) {
37	var fullName string
38	if strings.Contains(name,`/`){
39		fullName = path.Join(_this_.path,"static",name)
40	}else{
41		fullName = path.Join(_this_.path,name)
42	}
43	file, err := _this_.staticFS.Open(fullName)
44	return file, err
45}
46
47func main() {
48    // 设置静态资源
49    static := &StaticResource{
50        staticFS: ui.WebUI,
51        path:     "dist",
52    }
53
54    engine := gin.Default()
55    {
56        // 设置
57        engine.StaticFS("/static/",http.FS(static))
58        // 首页
59        engine.GET("/", func(context *gin.Context) {
60            context.Writer.WriteHeader(http.StatusOK)
61            indexHTML,_ := static.staticFS.ReadFile(static.path + "/" + "index.html")
62            context.Writer.Write(indexHTML)
63            context.Writer.Header().Add("Accept","text/html")
64            context.Writer.Flush()
65        })
66    }
67    engine.Run()
68}
69
70
71[GIN-debug] GET    /static/*filepath         --> github.com/gin-gonic/gin.(*RouterGroup).createStaticHandler.func1 (3 handlers)
72[GIN-debug] HEAD   /static/*filepath         --> github.com/gin-gonic/gin.(*RouterGroup).createStaticHandler.func1 (3 handlers)
73[GIN-debug] GET    /                         --> main.main.func1 (3 handlers)
74[GIN-debug] Environment variable PORT is undefined. Using port :8080 by default
75[GIN-debug] Listening and serving HTTP on :8080
76[GIN] 2021/02/17 - 17:37:07 | 200 |       530.8µs |             ::1 | GET      "/"
77[GIN] 2021/02/17 - 17:37:07 | 200 |    135.1147ms |             ::1 | GET      "/static/js/chunk-2d0b6337.40e74af5.js"
78[GIN] 2021/02/17 - 17:37:07 | 200 |    134.5926ms |             ::1 | GET      "/static/css/chunk-3d4a32e8.4951a1b7.css"
79[GIN] 2021/02/17 - 17:37:07 | 200 |    146.7519ms |             ::1 | GET      "/static/css/index.d72cf005.css"
80[GIN] 2021/02/17 - 17:37:07 | 200 |    147.2865ms |             ::1 | GET      "/static/js/index.15d7bf17.js"
81[GIN] 2021/02/17 - 17:37:07 | 200 |    151.6588ms |             ::1 | GET      "/static/css/chunk-vendors.16da611a.css"
82[GIN] 2021/02/17 - 17:37:07 | 200 |    148.8884ms |             ::1 | GET      "/static/js/chunk-vendors.24c0b194.js"
83[GIN] 2021/02/17 - 17:37:07 | 200 |            0s |             ::1 | GET      "/static/js/chunk-2d0d69a3.6eb93f6e.js"
84[GIN] 2021/02/17 - 17:37:07 | 200 |       364.8µs |             ::1 | GET      "/static/js/chunk-2d0e53c4.94fb2765.js"
85[GIN] 2021/02/17 - 17:37:07 | 200 |       382.2µs |             ::1 | GET      "/static/js/chunk-3d4a32e8.ced07e34.js"
86[GIN] 2021/02/17 - 17:37:07 | 200 |            0s |             ::1 | GET      "/static/fonts/element-icons.535877f5.woff"

不太习惯写长篇大论的文章,看得不是太明白的可以参考下面的链接,研究这个也是了解下用法,如果有更好的写法欢迎留言,共同讨论

参考: https://blog.csdn.net/RA681t58CJxsgCkJ31/article/details/113777516