Golang Is Shit E002

ThisIsGo.go

package main

import (
	"fmt"
	"io/ioutil"
	"net/http"
)

type BodyPrinter struct {
}

func (ctr *BodyPrinter) ServeHTTP(w http.ResponseWriter, req *http.Request) {
	body, _ := ioutil.ReadAll(req.Body)

	resp := string(body)
	_, _ = fmt.Fprintf(w, "body is\n%s\nlength is %d", resp, len(resp))
}

func Run() {
	http.Handle("/url", new(BodyPrinter))

	err := http.ListenAndServe(":8090", nil)
	if err != nil {
		panic(err)
	}
}

ThisIsGoTest.sh

#### slash slash ❌
curl --location 'localhost:8090//url' \
--header 'Content-Type: application/json' \
--data '{}'

body is
length is 0     ## why?

#### slash ✅
$ curl --location 'localhost:8091/url' \
--header 'Content-Type: application/json' \
--data '{}'

body is
{}
length is 2

ThisIsJava.java

package com.example;

import io.micronaut.http.MediaType;
import io.micronaut.http.annotation.Body;
import io.micronaut.http.annotation.Controller;
import io.micronaut.http.annotation.Get;
import io.micronaut.http.annotation.Post;

@Controller("/")
public class HelloController {

    @Get(uri = "/hello/get", produces = MediaType.TEXT_PLAIN) // (2)
    public String index() {
        return "Hello World";
    }

    @Post(uri = "/hello/post", consumes = MediaType.APPLICATION_JSON)
    public String process(@Body String formInput)  {
        return String.format("Hello json body len=%d", formInput.length());
    }
}

ThisIsJavaTest.sh

#### slash slash ✅
curl --location 'localhost:8090/hello//post' \
--header 'Content-Type: application/json' \
--data '{}'

{"_links":{"self":[{"href":"/hello//post","templated":false}]},"_embedded":{"errors":[{"message":"Page Not Found"}]},"message":"Not Found"}

#### slash ✅
$ curl --location 'localhost:8091/hello/post' \
--header 'Content-Type: application/json' \
--data '{}'

Hello json body len=2