本人是 PHPer， 最近在学习GO， 用过 Yii 框架，应该熟悉 yiichina.com, 里面有个自动签到功能，用Go 练习写了一个自动签到功能
```go
package main
import (
"io/ioutil"
"net/http"
"net/http/cookiejar"
"net/url"
"os"
"regexp"
"strings"
"time"
)
var cookies []*http.Cookie
const (
login_url = "https://www.yiichina.com/login"
sign_url = "https://www.yiichina.com/registration"
)
func main() {
/******************** 登录开始 ****************************/
c := &http.Client{}
csrf := getCsrf(c, login_url, true)
var postData = url.Values{}
postData.Add("_csrf", csrf)
postData.Add("LoginForm[username]", "*******")
postData.Add("LoginForm[password]", "*******")
postData.Add("LoginForm[rememberMe]", "0")
postData.Add("LoginForm[rememberMe]", "1")
postData.Add("login-button", "")
postDataStr := postData.Encode()
loginReq, _ := http.NewRequest("POST", login_url, strings.NewReader(postDataStr))
loginReq.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8")
loginReq.Header.Set("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8")
loginReq.Header.Set("Cache-Control", "no-cache")
loginReq.Header.Set("Connection","keep-alive")
loginReq.Header.Set("Content-Length","250")
loginReq.Header.Set("Content-Type","application/x-www-form-urlencoded")
loginReq.Header.Set("Host","www.yiichina.com")
loginReq.Header.Set("Origin", "https://www.yiichina.com")
loginReq.Header.Set("Pragma", "no-cache")
loginReq.Header.Set("Referer", "https://www.yiichina.com/login")
loginReq.Header.Set("Upgrade-Insecure-Requests", "1")
loginReq.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36")
for _, v := range cookies {
loginReq.AddCookie(v)
}
jar, _ := cookiejar.New(nil)
c.Jar = jar
resp, _ := c.Do(loginReq)
cookies = resp.Cookies()
/******************** 签到开始 ****************************/
_csrf := getCsrf(c, sign_url, false)
var signPostData = url.Values{}
signPostData.Add("_csrf", _csrf)
signPostStr := signPostData.Encode()
signReq, _ := http.NewRequest("POST", sign_url, strings.NewReader(signPostStr))
signReq.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8")
signReq.Header.Set("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8")
signReq.Header.Set("Cache-Control", "no-cache")
signReq.Header.Set("Connection","keep-alive")
signReq.Header.Set("Content-Length","250")
signReq.Header.Set("Content-Type","application/x-www-form-urlencoded")
signReq.Header.Set("Host","www.yiichina.com")
signReq.Header.Set("Origin", "https://www.yiichina.com")
signReq.Header.Set("Pragma", "no-cache")
signReq.Header.Set("Referer", "https://www.yiichina.com/")
signReq.Header.Set("X-Requested-With", "XMLHttpRequest")
signReq.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36")
for _, v := range cookies {
signReq.AddCookie(v)
}
res, _ := c.Do(signReq)
content, _ := ioutil.ReadAll(res.Body)
name := "E:/go/1.txt"
str_time := time.Now().Format("2006-01-02 15:04:05")
f, _ := os.OpenFile(name, os.O_WRONLY|os.O_APPEND, 0666)
logStr := str_time + " : " + string(content) + "\n"
f.Write([]byte(logStr))
}
func getCsrf(c * http.Client, url string, isSetCookie bool) string {
req, _ := http.NewRequest("GET", url, nil)
res, _ := c.Do(req)
data, _ := ioutil.ReadAll(res.Body)
re, _ := regexp.Compile("<meta name=\"csrf-token\" content=\"(.+)\">")
submatch := re.FindSubmatch([]byte(data))
if isSetCookie {
cookies = res.Cookies()
}
csrf := string(submatch[1])
return csrf
}
```
有疑问加站长微信联系（非本文作者））
