vfsgen 是一個很不錯的golang 靜態資源嵌入工具包，使用簡單，功能強大，以下是一個簡單的使用
環境准備
- docker-compose 文件
主要是方便構建以及運行
version: "3"
services:
app:
build: ./
image: dalongrong/vfsgen-app
ports:
- "9090:9090"
- vfsgen 試用
主要是基於vfsgen提供的包，調用方便，方便生成代碼可以直接調用的包（嵌入的資源）
項目結構
dist 為生成的嵌入靜態資源的包，cmd 為生成的嵌入資源的代碼調用，項目根的main.go為一個httpserver 主要是調用
生成的嵌入資源的包，resource 為一些環境
├── Dockerfile
├── README.md
├── cmd
│ └── main.go
├── dist
│ └── mydir-dist.go
├── docker-compose.yaml
├── go.mod
├── go.sum
├── main.go
└── resource
├── dev
│ ├── css
│ │ └── index.css
│ ├── fs
│ ├── index.html
│ └── js
│ └── index.js
└── pre
├── css
│ └── index.css
├── fs
├── index.html
└── js
└── index.js
go.mod
module github.com/rongfengliang/demoapp
go 1.14
require (
github.com/mitchellh/gox v1.0.1 // indirect
github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749 // indirect
github.com/shurcooL/vfsgen v0.0.0-20200627165143-92b8a710ab6c // indirect
golang.org/x/tools v0.0.0-20200724001824-cbb3c69a3747 // indirect
)
cmd/main.go
package main
import (
"log"
"net/http"
"github.com/shurcooL/httpfs/union"
"github.com/shurcooL/vfsgen"
)
func main() {
// 使用了union可以方便的進行資源合並
// use union for combin resource
var Assets = union.New(map[string]http.FileSystem{
"/login/dev": http.Dir("./resource/dev"),
"/login/pre": http.Dir("./resource/pre"),
})
var fs http.FileSystem = Assets
err := vfsgen.Generate(fs, vfsgen.Options{
PackageName: "dist",
Filename: "./dist/mydir-dist.go",
VariableName: "MyDir",
})
if err != nil {
log.Fatalln(err)
}
}
main.go
package main
import (
"net/http"
"github.com/rongfengliang/demoapp/dist"
)
func main() {
http.Handle("/login/pre/", http.FileServer(dist.MyDir))
http.Handle("/login/dev/", http.FileServer(dist.MyDir))
http.ListenAndServe(":9090", nil)
}
- dockerfile
為了方便打包，代碼使用了gox 構建很方便,一個命令就可搞定基本主流平台的打包
FROM golang:1.14-alpine AS build-env
WORKDIR /go/src/app
RUN /bin/sed -i 's,http://dl-cdn.alpinelinux.org,https://mirrors.aliyun.com,g' /etc/apk/repositories
ENV GO111MODULE=on
ENV GOPROXY=https://goproxy.cn
RUN go get github.com/mitchellh/gox
COPY go.mod .
COPY go.sum .
COPY main.go .
COPY resource ./resource
COPY dist ./dist
COPY cmd/main.go ./cmd/main.go
RUN apk update && apk add git \
&& go run cmd/main.go && gox
FROM alpine:latest
WORKDIR /app
RUN /bin/sed -i 's,http://dl-cdn.alpinelinux.org,https://mirrors.aliyun.com,g' /etc/apk/repositories
RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
COPY --from=build-env /go/src/app/demoapp_* /app/
CMD ["/app/demoapp_linux_amd64"]
構建&&運行效果
- 構建
docker-compose build
- 啟動
docker-compose up -d
訪問 /login/pre/ /login/dev 地址 
說明
從工具的使用上vfsgen 是比較高效以及簡單的，是一個不錯的靜態資源嵌入工具,而且還支持template操作
參考資料
https://github.com/rongfengliang/vfsgen-learning
https://github.com/shurcooL/vfsgen
https://github.com/mitchellh/gox
https://github.com/laher/goxc