我编写了一个设置 cookie 并删除它的网络应用程序。为了向场景阐明我的意思,请查看以下代码片段。
package main
import (
"fmt"
"github.com/gorilla/mux"
"net/http"
"time"
)
func rootHandler(rw http.ResponseWriter, r *http.Request) {
fmt.Fprintf(rw, "Hello Foo")
}
func setCookieHandler(rw http.ResponseWriter, r *http.Request) {
c := &http.Cookie{
Name: "storage",
Value: "value",
Path: "/",
MaxAge: 0,
HttpOnly: true,
}
http.SetCookie(rw, c)
}
func deleteCookieHandler(rw http.ResponseWriter, r *http.Request) {
c, err := r.Cookie("storage")
if err != nil {
panic(err.Error())
}
c.Name = "Deleted"
c.Value = "Unuse"
c.Expires = time.Unix(1414414788, 1414414788000)
}
func readCookieHandler(rw http.ResponseWriter, r *http.Request) {
c, err := r.Cookie("storage")
if err != nil {
panic(err.Error())
}
fmt.Println(c.Expires)
}
func evaluateCookieHandler(rw http.ResponseWriter, r *http.Request) {
c, err := r.Cookie("storage")
if err != nil {
panic(err.Error())
}
if time.Now().After(c.Expires) {
fmt.Println("Cookie is expired.")
}
}
func main() {
mux := mux.NewRouter()
mux.HandleFunc("/", rootHandler)
mux.HandleFunc("/cookie", setCookieHandler)
mux.HandleFunc("/delete", deleteCookieHandler)
mux.HandleFunc("/read", readCookieHandler)
mux.HandleFunc("/eval", evaluateCookieHandler)
http.ListenAndServe(":3000", mux)
}
如您所见,当我访问/cookie 位置时,它将按预期设置一个 cookie。然后当我调用/delete 时,它应该更改 cookie 的名称、值和过期时间。过期时间已更改,但名称和值未更改。
我想要的是,当用户单击退出按钮删除 cookie 时,从浏览器中删除用于在身份验证系统中退出的 cookie。
我还发现 this link并遵循建议,但未按预期工作。
最佳答案
要删除名为“storage”的 cookie,发送具有相同 cookie 名称的 set-cookie。
deleteCookieHandler()应该如下所示
c := &http.Cookie{
Name: "storage",
Value: "",
Path: "/",
Expires: time.Unix(0, 0),
HttpOnly: true,
}
http.SetCookie(rw, c)
关于cookies - 如何删除cookie,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27671061/