生命不止，繼續 go go go!!!

昨天介紹了iris框架，介紹了如何使用basic認證、Markdown、YAML、Json等：?
Go實戰–也許最快的Go語言Web框架kataras/iris初識(basic認證、Markdown、YAML、Json)

繼續跟大家一起學習iris框架.

TOML

什么是toml??
toml也是一種配置文件，關于golang中配置文件的使用之前也有介紹過：?
Go實戰–go語言中使用YAML配置文件(與json、xml、ini對比)

toml是Tom’s Obvious, Minimal Language.的縮寫！

配置文件的使用由來已久，從.ini、XML、JSON、YAML再到TOML，語言的表達能力越來越強，同時書寫便捷性也在不斷提升。 TOML是前GitHub CEO， Tom Preston-Werner，于2013年創建的語言，其目標是成為一個小規模的易于使用的語義化配置文件格式。TOML被設計為可以無二義性的轉換為一個哈希表(Hash table)。

github地址：?
https://github.com/toml-lang/toml

Star: 6478

例子

# This is a TOML document.title = "TOML Example"[owner] name = "Tom Preston-Werner" dob = 1979-05-27T07:32:00-08:00 # First class dates[database] server = "192.168.1.1" ports = [ 8001, 8001, 8002 ] connection_max = 5000 enabled = true[servers]# Indentation (tabs and/or spaces) is allowed but not required[servers.alpha]ip = "10.0.0.1"dc = "eqdc10"[servers.beta]ip = "10.0.0.2"dc = "eqdc10"[clients] data = [ ["gamma", "delta"], [1, 2] ]# Line breaks are OK when inside arrays hosts = ["alpha","omega" ]

看到了吧，不關心空格和縮進。

規范?
大小寫敏感?
必須是UTF-8編碼?
不關心空格、縮進?
使用#進行注釋

Go中操作TOML的優秀開源庫?
https://github.com/BurntSushi/toml?
https://github.com/pelletier/go-toml?
具體的之后會專業寫博客介紹

iris讀取toml?
新建iris.tml文件：

DisablePathCorrection = false EnablePathEscape = false FireMethodNotAllowed = true DisableBodyConsumptionOnUnmarshal = false TimeFormat = "Mon, 01 Jan 2006 15:04:05 GMT" Charset = "UTF-8"[Other]MyServerName = "iris"

main.go:

package mainimport ("github.com/kataras/iris""github.com/kataras/iris/context" )func main() {app := iris.New()app.Get("/", func(ctx context.Context) {ctx.HTML("<b>Hello Iris TOML!</b>")})app.Run(iris.Addr(":8080"), iris.WithConfiguration(iris.TOML("iris.tml"))) }

Cache

關于緩存，一直沒有跟大家介紹，github上也有很多關于golang的優秀的Cache庫：?
patrickmn/go-cache?
An in-memory key:value store/cache (similar to Memcached) library for Go, suitable for single-machine applications.

golang/groupcache?
groupcache is a caching and cache-filling library, intended as a replacement for memcached in many cases.?
同樣，我們以后再進行詳細介紹，這里我們看看iris中使用Cache：

package mainimport ("time""github.com/kataras/iris""github.com/kataras/iris/cache""github.com/kataras/iris/context" )func main() {app := iris.Default()cachedHandler := cache.WrapHandler(h, 2*time.Minute)app.Get("/hello", cachedHandler)app.Run(iris.Addr(":8080")) }func h(ctx context.Context) {ctx.HTML("<h1> Hello, this should be cached. Every 2 minutes it will be refreshed, check your browser's inspector</h1>") }

cookie

關于cookie，之前也有些文章分享過：?
Go實戰–go中使用cookie(The way to go)

iris當然不會缺少cookie的功能了。

package mainimport ("github.com/kataras/iris""github.com/kataras/iris/context""github.com/kataras/iris/sessions""github.com/gorilla/securecookie" )func newApp() *iris.Application {app := iris.New()cookieName := "mycustomsessionid"// AES only supports key sizes of 16, 24 or 32 bytes.// You either need to provide exactly that amount or you derive the key from what you type in.hashKey := []byte("the-big-and-secret-fash-key-here")blockKey := []byte("lot-secret-of-characters-big-too")secureCookie := securecookie.New(hashKey, blockKey)mySessions := sessions.New(sessions.Config{Cookie: cookieName,Encode: secureCookie.Encode,Decode: secureCookie.Decode,})app.Get("/", func(ctx context.Context) {ctx.Writef("You should navigate to the /set, /get, /delete, /clear,/destroy instead")})app.Get("/set", func(ctx context.Context) {//set session valuess := mySessions.Start(ctx)s.Set("name", "iris")//test if setted herectx.Writef("All ok session setted to: %s", s.GetString("name"))})app.Get("/get", func(ctx context.Context) {// get a specific key, as string, if no found returns just an empty strings := mySessions.Start(ctx)name := s.GetString("name")ctx.Writef("The name on the /set was: %s", name)})app.Get("/delete", func(ctx context.Context) {// delete a specific keys := mySessions.Start(ctx)s.Delete("name")})app.Get("/clear", func(ctx context.Context) {// removes all entriesmySessions.Start(ctx).Clear()})app.Get("/update", func(ctx context.Context) {// updates expire date with a new datemySessions.ShiftExpiration(ctx)})app.Get("/destroy", func(ctx context.Context) {//destroy, removes the entire session data and cookiemySessions.Destroy(ctx)})return app }func main() {app := newApp()app.Run(iris.Addr(":8080")) }

瀏覽器訪問：http://localhost:8080/set?
http://localhost:8080/get

總結

以上是生活随笔為你收集整理的Go实战--也许最快的Go语言Web框架kataras/iris初识二(TOML、Cache、Cookie)的全部內容，希望文章能夠幫你解決所遇到的問題。

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