WeChat Development (I) application interface and token acquisition, token acquisition

Development (1) application interface and token acquisition

Author: Songyang

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Link: http://blog.csdn.net/fansongy/article/details/43233369

Apply for developers

Log onto the public platform and click the Developer Center on the left to apply to become a developer.

You can see the Developer Center interface, which includes AppId and AppSecret. Currently, the AppSecret is partially hidden. If you want to view the complete version, you need to bind your mobile phone and brush the QR code. This looks safe.

Get Access_token

In order not to expose the automatic AppId and AppSecret, we need to use an access_token to the server.GETMethod to access the following URL:

https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET

Parameter description

Parameters	Required?	Description
Grant_type	Yes	Obtain access_token and enter client_credentia
Appid	Yes	Unique third-party user credential
Secret	Yes	The unique credential key of a third-party user, that is, appsecret

The returned result is Json:

{    "access_token": "G4TT9jG3Y3S3pK4rBMxuCHFgRdo56SQKpC8WKv_4-rIeJ0UwnOaN9t8DCoIyKgSDAVAIKdV2cveWZ--oOEvsoYGy1jBTicXWQCgq2SHdo-Y",    "expires_in": 7200}

This access_token can be used by our server to request various information from the server. The relevant documentation is here

Access interface

List of server IP addresses as test requests.

Access:

https://api.weixin.qq.com/cgi-bin/getcallbackip?access_token=ACCESS_TOKEN

Replace ACCESS_TOKEN with the text requested in the previous step. We can see that a Json is returned:

{    "ip_list": [        "101.226.62.77",        "101.226.62.78",        "101.226.62.79",        "140.207.54.77",        "140.207.54.78",        "140.207.54.79",        "140.207.54.80"    ]}

These are the server address list.

Error List

An error occurs when a network request is sent. The official Error List document is here.