mirror of
https://github.com/kataras/iris.git
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92 lines
3.2 KiB
Go
92 lines
3.2 KiB
Go
package main
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import (
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"net/http"
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"strings"
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"github.com/kataras/iris"
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)
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// In this example you'll just see one use case of .WrapRouter.
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// You can use the .WrapRouter to add custom logic when or when not the router should
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// be executed in order to execute the registered routes' handlers.
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//
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// To see how you can serve files on root "/" without a custom wrapper
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// just navigate to the "file-server/single-page-application" example.
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//
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// This is just for the proof of concept, you can skip this tutorial if it's too much for you.
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func newApp() *iris.Application {
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app := iris.New()
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app.OnErrorCode(iris.StatusNotFound, func(ctx iris.Context) {
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ctx.HTML("<b>Resource Not found</b>")
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})
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app.Get("/", func(ctx iris.Context) {
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ctx.ServeFile("./public/index.html", false)
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})
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app.Get("/profile/{username}", func(ctx iris.Context) {
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ctx.Writef("Hello %s", ctx.Params().Get("username"))
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})
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// serve files from the root "/", if we used .StaticWeb it could override
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// all the routes because of the underline need of wildcard.
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// Here we will see how you can by-pass this behavior
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// by creating a new file server handler and
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// setting up a wrapper for the router(like a "low-level" middleware)
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// in order to manually check if we want to process with the router as normally
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// or execute the file server handler instead.
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// use of the .StaticHandler
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// which is the same as StaticWeb but it doesn't
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// registers the route, it just returns the handler.
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fileServer := app.StaticHandler("./public", false, false)
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// wrap the router with a native net/http handler.
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// if url does not contain any "." (i.e: .css, .js...)
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// (depends on the app , you may need to add more file-server exceptions),
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// then the handler will execute the router that is responsible for the
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// registered routes (look "/" and "/profile/{username}")
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// if not then it will serve the files based on the root "/" path.
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app.WrapRouter(func(w http.ResponseWriter, r *http.Request, router http.HandlerFunc) {
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path := r.URL.Path
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// Note that if path has suffix of "index.html" it will auto-permant redirect to the "/",
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// so our first handler will be executed instead.
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if !strings.Contains(path, ".") { // if it's not a resource then continue to the router as normally.
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router(w, r)
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return
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}
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// acquire and release a context in order to use it to execute
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// our file server
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// remember: we use net/http.Handler because here we are in the "low-level", before the router itself.
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ctx := app.ContextPool.Acquire(w, r)
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fileServer(ctx)
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app.ContextPool.Release(ctx)
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})
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return app
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}
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func main() {
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app := newApp()
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// http://localhost:8080
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// http://localhost:8080/index.html
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// http://localhost:8080/app.js
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// http://localhost:8080/css/main.css
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// http://localhost:8080/profile/anyusername
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app.Run(iris.Addr(":8080"))
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// Note: In this example we just saw one use case,
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// you may want to .WrapRouter or .Downgrade in order to bypass the iris' default router, i.e:
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// you can use that method to setup custom proxies too.
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//
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// If you just want to serve static files on other path than root
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// you can just use the StaticWeb, i.e:
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// .StaticWeb("/static", "./public")
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// ________________________________requestPath, systemPath
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}
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