Go語言 Cookie的使用

這是一個建立於 的文章，其中的資訊可能已經有所發展或是發生改變。

首先看看Cookie的結構體

type Cookie struct {    Name  string    Value string    Path       string    // optional    Domain     string    // optional    Expires    time.Time // optional    RawExpires string    // for reading cookies only    // MaxAge=0 means no 'Max-Age' attribute specified.    // MaxAge<0 means delete cookie now, equivalently 'Max-Age: 0'    // MaxAge>0 means Max-Age attribute present and given in seconds    MaxAge   int    Secure   bool    HttpOnly bool    Raw      string    Unparsed []string // Raw text of unparsed attribute-value pairs}

 

設定Cookie

cookie := http.Cookie{Name: "testcookiename", Value: "testcookievalue", Path: "/", MaxAge: 86400}http.SetCookie(w, &cookie)

 

讀取Cookie

cookie, err := req.Cookie("testcookiename")

 

刪除Cookie

cookie := http.Cookie{Name: "testcookiename", Path: "/", MaxAge: -1}http.SetCookie(w, &cookie)

 

 

package mainimport (    "net/http")func SayHello(w http.ResponseWriter, req *http.Request) {    w.Write([]byte("Hello"))}func ReadCookieServer(w http.ResponseWriter, req *http.Request) {    // read cookie    cookie, err := req.Cookie("testcookiename")    if err == nil {        cookievalue := cookie.Value        w.Write([]byte("<b>cookie的值是：" + cookievalue + "</b>\n"))    } else {        w.Write([]byte("<b>讀取出現錯誤：" + err.Error() + "</b>\n"))    }}func WriteCookieServer(w http.ResponseWriter, req *http.Request) {    cookie := http.Cookie{Name: "testcookiename", Value: "testcookievalue", Path: "/", MaxAge: 86400}    http.SetCookie(w, &cookie)    w.Write([]byte("<b>設定cookie成功。</b>\n"))}func DeleteCookieServer(w http.ResponseWriter, req *http.Request) {    cookie := http.Cookie{Name: "testcookiename", Path: "/", MaxAge: -1}    http.SetCookie(w, &cookie)    w.Write([]byte("<b>刪除cookie成功。</b>\n"))}func main() {    http.HandleFunc("/", SayHello)    http.HandleFunc("/readcookie", ReadCookieServer)    http.HandleFunc("/writecookie", WriteCookieServer)    http.HandleFunc("/deletecookie", DeleteCookieServer)    http.ListenAndServe(":80", nil)}

 

http://localhost/readcookie

http://localhost/writecookie

http://localhost/deletecookie