Cookie is not set at the POSTMAN

Question

Am试图通过使用Golang 编写代码blow在POSTMAN设置cookie

sub := handlers.NewSunscribers(s)
router := mux.NewRouter()  
router.HandleFunc("/sub/set", sub.SetCookie).Methods("POST")
log.Fatal(http.ListenAndServe(":8000", router))
type SubHandlers struct {
sub storage.Sub
}

func (s SubHandlers) SetCookie(w http.ResponseWriter, r *http.Request) {
json.NewEncoder(w).Encode("Am trying to set a cookie")
cookie := &http.Cookie{
Name:   "name",
Value:  "Biola",
MaxAge: 3000,
}
w.Write([]byte("Cookie set Successfully"))
http.SetCookie(w, cookie)

}

所以在我运行了这个程序之后，我检查了POSTMAN"；cookie"；botton低于"；发送"；botton和我意识到饼干不在那里。有人能解释一下我哪里做错了吗？。

Answer 1

首先设置cookie，然后编写响应。示例：

http.SetCookie(w, cookie)
w.Write([]byte("Cookie set Successfully"))

Answer 2

我后来意识到，如果写入响应，就不能设置cookie正文优先，必须先设置cookie，然后将其他消息发送到响应体可以如下：

func setCookie(w http.ResponseWriter, r *http.Request) {
cookie := &http.Cookie{
Name:   "name",
Value:  "Bola",
MaxAge: 300,
}
http.SetCookie(w, cookie)
w.Write([]byte("Cookie set Successfully"))
}