获取登陆二维码（第一步）
# Obtain the login QR code (step 1)
**Brief description**：
- Contact customer service before use
**request URL**
- {APIURL}/dy/login/loginqr
**Request mode**
- POST
**Request header Headers:（Don't forget to pass it on**）
- Content-Type：application/json
- **Access-Token：loginInterface return**
**parameter**
|Parameter name | required | type | description|
|-|-|-|-|
Return data：
|Parameter name | type | description|
|-|-|-|-|
|code|string|0 success,! 0 failed|
|msg|string|feedback information|
|data|||
Request parameter example
```
{
"wcid": "1353626603531276288"
}
```
Successful return example
```
```
Error return example
```
{
"msg": "Call failed",
"code": -1,
"data": null
}
```
**Login complete steps**：