code

access_token open_id , code

acc code , :

ess_tok

https:\/\/open.weixin.qq.com\/connect\/oauth2\/authorize?

appid=APPID&redirect_uri=REDIRECT_URI&response_type=code&scope=SCOPE&state=STA

:

+ , code

open_id url , redirect_uri ,

code ,

code

userInfo

, access_token open_id

,, JS-SDK (,

JS-SDK sdk )

,

1. ASCII , : jsapi_ticket

2, url (sort) noncestr

(

3. (key1=value1&key2=value2….) time

) url

(

sha1 access_token

url )

appID

secret

(

,

)

(, svn

,

:

,)

:

serverUrl

, url get 34

,

, signature , timestamp , nonce , echostr

, echostr , url, , :

url

,

echostr, ,

,

,