<form action="/login" method="post">
Пароль <input type="text" name="pass"><br><br>
<input type="submit" value="Submit">
</form>
router.POST("/login", func(c *gin.Context) {
pass, _ := ioutil.ReadAll(c.Request.Body)
if strings.ReplaceAll(string(pass), "pass=", "") != "123" {
fmt.Println("Ошибка")
return
}
})
router.POST("/login", func(c *gin.Context) {
pass := c.PostForm("pass")
if pass != "123" {
fmt.Println("Ошибка")
return
}
})