【求助】Go爬虫无法获取北邮人论坛cookie的疑惑

#### 背景 这两天尝试写个Go爬虫爬北邮人论坛，期望能登录后保存cookie，后续的访问都带着这个cookie。查看资料推荐用`net/http/cookiejar`。 目前能登录成功，获取成功登录Json。但是发现并未获取登录后的cookie，导致后续直接Get帖子正文报错**“您未登录,请登录后继续操作”** 请教各位大神，这种情况哪里出错了？ #### 实现 ``` package main import ( "net/http/cookiejar" "net/url" "strings" "fmt" "net/http" "crypto/tls" "io/ioutil" ) func main() { // init cookiejar var cookieJar *cookiejar.Jar cookieJar, _ = cookiejar.New(nil) // init client with cookiejar httpClient := &http.Client{ Jar: cookieJar, } // login param postValues := url.Values{} postValues.Set("id", "ID") postValues.Set("passwd", "PWD") postValues.Set("s-mode", "0") postValues.Set("CookieDate", "3") // request for login httpReq, _ := http.NewRequest("POST", "https://bbs.byr.cn/user/ajax_login.json", strings.NewReader(postValues.Encode())) httpReq.Header.Set("Content-Type", "application/x-www-form-urlencoded; param=value") httpReq.Header.Add("X-Requested-With", "XMLHttpRequest") httpReq.Header.Add("Connection", "keep-alive") httpReq.Header.Add("User-Agent", "Mozilla/5.0") httpReq.Header.Add("Referer", "https://bbs.byr.cn") httpReq.Header.Add("Accept", "application/json, text/javascript, */*; q=0.01") httpReq.Header.Add("authority", "bbs.byr.cn") // for nginx/1.10 httpClient.Transport = &http.Transport{ TLSNextProto: make(map[string]func(authority string, c *tls.Conn) http.RoundTripper), } // login httpResp, _ := httpClient.Do(httpReq) fmt.Printf("req cookies: %s \n", httpReq.Cookies()) fmt.Printf("resp cookies: %s \n", httpResp.Cookies()) // request to get article content httpReq1, _ := http.NewRequest("GET", "https://bbs.byr.cn/article/Golang/842", nil) httpReq1.Header.Add("X-Requested-With", "XMLHttpRequest") httpResp1, _ := httpClient.Do(httpReq1) body, _ := ioutil.ReadAll(httpResp1.Body) fmt.Println(string(body)) } ``` 输出(可见cookie为空)： ``` req cookies: [] resp cookies: [] (...省略...) <h5>产生错误的可能原因：</h5><ul><li><samp class="ico-pos-dot"></samp>您未登录,请登录后继续操作</li> (...省略...) ``` **困扰多时，求各位指点**