hello gin

main.go

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package main

import (
	"log"
	"net/http"
	"time"

	"github.com/gin-contrib/cors"
	"github.com/gin-gonic/gin"
)

func main() {
	gin.SetMode(gin.ReleaseMode)

	router := gin.Default()

	router.Use(cors.New(cors.Config{
		AllowCredentials: true,
		AllowHeaders:     []string{"Origin", "Authorization", "Content-Type"},
		AllowMethods:     []string{"DELETE", "GET", "PATCH", "POST", "PUT"},
		AllowOrigins:     []string{"*"},
		AllowOriginFunc: func(origin string) bool {
			return true
		},
		ExposeHeaders: []string{"Content-Type"},
		MaxAge:        24 * time.Hour,
	}))

	router.POST("/auth/login", loginEndpoint)
	if err := router.Run(":9090"); err != nil {
		log.Fatalf("failed to run: %v", err)
	}
}

func loginEndpoint(ctx *gin.Context) {
	ctx.JSON(http.StatusOK, gin.H{
		"message": "Hello Gin!",
	})
}

main.js

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

const axios = require('axios')

async function postRequest() {
    axios.post('http://localhost:9090/auth/login', {
        username: 'admin',
        password: 'admin'
      }, {
        headers: {
          'Content-Type': 'application/x-www-form-urlencoded'
        }
      })
      .then (function (resp) {
        console.log(`Data: ${resp.data.message}`)
        console.log(`Date: ${resp.headers.date}`)
        console.log(`Path: ${resp.request.path}`)
        console.log(`Request method: ${resp.request.method}`)
        console.log(`Status code: ${resp.status}`)
        console.log(`Status text: ${resp.statusText}`)
      })
      .catch (error => {
        console.log(error)
      })
}

postRequest()