cookiejar 自动存储cookie
最后更新于：2022-04-02 02:44:48
[TOC]
## cookiejar
cookiejar会自动帮忙管理服务端返回的cookies
```
jar, _ := cookiejar.New(nil)
c := http.Client{
Jar: jar,
}
request, _ := http.NewRequest("get", "http://127.0.0.1:84", nil)
c.Do(request)
fmt.Printf("%+v\n", len(request.Cookies())) // 0
request, _ = http.NewRequest("get", "http://127.0.0.1:84", nil)
c.Do(request)
fmt.Printf("%+v\n", len(request.Cookies())) // 1
request, _ = http.NewRequest("get", "http://127.0.0.1:84", nil)
c.Do(request)
fmt.Printf("%+v\n", len(request.Cookies())) // 1
```
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