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package main
import (
func main() {
app := newApp()
// use Postman or whatever to do a POST request
// (however you are always free to use app.Get and GET http method requests to read body of course)
// to the http://localhost:8080 with RAW BODY:
addr: localhost:8080
serverName: Iris
// The response should be:
// Received: main.config{Addr:"localhost:8080", ServerName:"Iris"}
app.Run(iris.Addr(":8080"), iris.WithoutServerError(iris.ErrServerClosed), iris.WithOptimizations)
func newApp() *iris.Application {
app := iris.New()
app.Post("/", handler)
return app
// simple yaml stuff,
type config struct {
Addr string `yaml:"addr"`
ServerName string `yaml:"serverName"`
// Decode implements the `kataras/iris/context#BodyDecoder` optional interface
// that any go type can implement in order to be self-decoded when reading the request's body.
func (c *config) Decode(body []byte) error {
return yaml.Unmarshal(body, c)
func handler(ctx iris.Context) {
var c config
// Note:
// second parameter is nil because our &c implements the `context#BodyDecoder`
// which has a priority over the context#Unmarshaler (which can be a more global option for reading request's body)
// see the `http_request/read-custom-via-unmarshaler/main.go` example to learn how to use the context#Unmarshaler too.
// Note 2:
// If you need to read the body again for any reason
// you should disable the body consumption via `app.Run(..., iris.WithoutBodyConsumptionOnUnmarshal)`.
if err := ctx.UnmarshalBody(&c, nil); err != nil {
ctx.Writef("Received: %#+v", c)
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