Go Gin-Gonic, get text from POST request


I’m starting to develop a REST API using Go and package Gin-Gonic. The idea is to create a REST API that receives POST requests in a JSON format and redirects this call to another application (also a API). Here is a piece of code:

package main

import (

func main() {
    r := gin.Default()
    r.GET("/status", func(c *gin.Context) {
        c.String(200, "on")

    r.GET("/user/:name", func(c *gin.Context) {
        name := c.Param("name")
        c.String(http.StatusOK, "Hello %s", name)

    r.GET("/user/:name/:action", func(c *gin.Context) {
        name := c.Param("name")
        action := c.Param("action")
        message := name + " is " + action
        c.String(http.StatusOK, message)

    r.POST("/foo", func(c *gin.Context) {
        fmt.Printf("%s", "At least I got here")
        message := c.PostForm() //???
        c.JSON(200, gin.H{"status": message}) //???
    r.Run(":8080") // listen an

At function r.Posts("/foo",...) I would like c.JSON to send me back the full JSON that I sent:

curl -H "Content-Type: application/json" -X POST -d '{"user":"xyz","password":"xyz"}' http://localhost:8080/foo

I’ve seen examples where they bind the JSON file by creating a struct with the same structure as the input JSON (check Gin-Gonic examples at https://github.com/gin-gonic/gin ). However I only need to resend the full string without taking care of the format. Any ideas?


I ended up creating a struct to parse my JSON, then I make some required calculations and finally I resend the data parsing my JSON to string using json.Marshal. I think it makes sense to parse the JSON, it is a way to check whether the info received is correct.

Answered By – Salami

Answer Checked By – Clifford M. (GoLangFix Volunteer)

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