Cookie/AddCookie

Cookie方法从HTTP请求头中获取cookie，AddCookie则添加cookie至HTTP响应头。

Example

package main
import (
    "math/rand"
    "net/http"
    "strconv"
    "github.com/vicanso/elton"
    "github.com/vicanso/elton/middleware"
)
func main() {
    e := elton.New()
    e.Use(middleware.NewDefaultResponder())
    e.GET("/", func(c *elton.Context) (err error) {
        cookie, _ := c.Cookie("jt")
        if cookie == nil {
            _ = c.AddCookie(&http.Cookie{
                Name:  "jt",
                Value: strconv.Itoa(rand.Int()),
            })
        }
        c.Body = cookie
        return
    })
    err := e.ListenAndServe(":3000")
    if err != nil {
        panic(err)
    }
}