我正在尝试测试我是否在域A中,域A客户端是否可以将域B cookie发送到域B.
这是我的golang代码
package main
import (
"fmt"
"net/http"
"log"
"time"
"encoding/json"
)
func setCookie(w http.ResponseWriter, r *http.Request) {
expiration := time.Now().Add(365 * 24 * time.Hour)
cookie := http.Cookie{Path: "/test_receive_cookie", Name: "test_cors", Value: "test_cors", Expires: expiration}
http.SetCookie(w, &cookie)
fmt.Fprintf(w, "Success")
}
func receiveCookie(w http.ResponseWriter, r *http.Request) {
fmt.Println(r.Cookies())
data := make(map[string]interface{})
for _, cookie := range r.Cookies() {
data[cookie.Name] = cookie.Value
}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(data)
}
func main() {
http.HandleFunc("/set_cookie", setCookie)
http.HandleFunc("/test_receive_cookie", receiveCookie)
err := http.ListenAndServe(":8012", nil)
if err != nil {
log.Fatal("ListenAndServe: ", err)
}
}
我首先点击http://localhost:8012/set_cookie
,然后使用此library打开包含javascript的html文件
this._xhr.get(
"http://localhost:8012/test_receive_cookie",
{ headers: { "Access-Control-Allow-Origin": "*" }},
function(err, resp) {
console.log(resp);
console.log(err);
});
发生了以下情况
Failed to load http://localhost:8012/test_receive_cookie: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access.
我的服务器从[]
fmt.Println(r.Cookies())
如果我点击http://localhost:8012/test_receive_cookie
我可以看到我设置的cookie在浏览器上打印出来,但当我打开调用端点的html时,服务器将有空cookie
我的问题是如何使用客户端代码将cookie传回http://localhost:8012/test_receive_cookie
?
我错过了一些配置代码吗?
答案 0 :(得分:2)
您需要Go服务器发送Access-Control-Allow-Origin
标头,客户端无法提供它们(请参阅CORS)。
如果您更新服务器以添加此标头,则客户端将停止抛出错误。
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.Header().Set("Access-Control-Allow-Origin", "*")