Golang : Gin framework accept query string by post request example

Golang's standard net/http package has excellent and sufficient functions to handle web applications such as a micro service or API service workload. However, there are times when you want to use third party framework such as Gin instead. For this tutorial, we will explore how to configure a simple Gin web application to accept query string input by POST request such as :

http://example.com/query?firstparameter=somevalue&secondparameter=somevalue

Here we go!

 package main

 import (
 "net/http"
 "github.com/gin-gonic/gin"
 )

 func main() {
  r := gin.Default()

  r.GET("/query", func(c *gin.Context) {
 first := c.Request.URL.Query().Get("first") //<---- here!
 c.String(http.StatusOK, "First is "+first+"\n")

 second := c.Request.URL.Query().Get("second")
 c.String(http.StatusOK, "Second is "+second+"\n")
  })

  r.Run(":8080") // listen and serve on 0.0.0.0:8080

 }

Assuming that you are running this program on localhost... point your browser to

http://localhost:8080/query?first=123&second=abc

and if everything goes smoothly, you should see these reply from the web application.

First is 123

Second is abc

References :

https://github.com/gin-gonic/gin