Cookie

設定和取得 cookie。

import (
  "fmt"

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

func main() {

  router := gin.Default()

  router.GET("/cookie", func(c *gin.Context) {

      cookie, err := c.Cookie("gin_cookie")

      if err != nil {
          cookie = "NotSet"
          c.SetCookie("gin_cookie", "test", 3600, "/", "localhost", false, true)
      }

      fmt.Printf("Cookie 值：%s \n", cookie)
  })

  router.Run()
}

將 max age 設定為 -1 來刪除 cookie。

c.SetCookie("gin_cookie", "test", -1, "/", "localhost", false, true)

透過 http.Cookie 設定 cookie (v1.11+)

Gin 也支援使用 *http.Cookie 來設定 cookie，可以存取 Expires、MaxAge、SameSite 和 Partitioned 等欄位。

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

func main() {
  r := gin.Default()
  r.GET("/set-cookie", func(c *gin.Context) {
    c.SetCookieData(&http.Cookie{
      Name:   "session_id",
      Value:  "abc123",
      Path:   "/",
      Domain:   "localhost",
      Expires:  time.Now().Add(24 * time.Hour),
      MaxAge:   86400,
      Secure:   true,
      HttpOnly: true,
      SameSite: http.SameSiteLaxMode,
      // Partitioned: true, // Go 1.22+
    })
    c.String(http.StatusOK, "ok")
  })
  r.Run(":8080")
}