创新互联IRIS教程：iris中间件

使用空白中间件替换默认中间件

app := iris.New()

替换为

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app := iris.Default()

使用中间件

package main

import (
    "github.com/kataras/iris/v12"

    "github.com/kataras/iris/v12/middleware/recover"
)

func main() {
    // Creates an iris application without any middleware by default
    app := iris.New()

    // Global middleware using `UseRouter`.
    //
    // Recovery middleware recovers from any panics and writes a 500 if there was one.
    app.UseRouter(recover.New())

    // Per route middleware, you can add as many as you desire.
    app.Get("/benchmark", MyBenchLogger(), benchEndpoint)

    // Authorization group
    // authorized := app.Party("/", AuthRequired())
    // exactly the same as:
    authorized := app.Party("/")
    // per group middleware! in this case we use the custom created
    // AuthRequired() middleware just in the "authorized" group.
    authorized.Use(AuthRequired())
    {
        authorized.Post("/login", loginEndpoint)
        authorized.Post("/submit", submitEndpoint)
        authorized.Post("/read", readEndpoint)

        // nested group
        testing := authorized.Party("testing")
        testing.Get("/analytics", analyticsEndpoint)
    }

    // Listen and serve on 0.0.0.0:8080
    app.Listen(":8080")
}

中间件中的GOroutine

在中间件或处理程序中启动新的 Goroutines 时，您不应该使用其中的原始上下文，您必须使用只读副本。

func main() {
    app := iris.Default()

    app.Get("/long_async", func(ctx iris.Context) {
        // create a clone to be used inside the goroutine
        ctxCopy := ctx.Clone()
        go func() {
            // simulate a long task with time.Sleep(). 5 seconds
            time.Sleep(5 * time.Second)

            // note that you are using the copied context "ctxCopy", IMPORTANT
            log.Printf("Done! in path: %s", ctxCopy.Path())
        }()
    })

    app.Get("/long_sync", func(ctx iris.Context) {
        // simulate a long task with time.Sleep(). 5 seconds
        time.Sleep(5 * time.Second)

        // since we are NOT using a goroutine, we do not have to copy the context
        log.Printf("Done! in path: %s", ctx.Path())
    })

    app.Listen(":8080")
}

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