上传文件

上传流程图

      +-----------------+ +-----------------+ +-----------------+
      | Client/Browser  | |    FORM API     | |     知晓云       |
      +-----------------+ +-----------------+ +-----------------+
              |                   |                   |
             +++        Request authorization        +++
             |-|====================================>|-|
             |-|                  |                  |-|
             |-|        Response authorization       |-|
             |-|<====================================|-|
             +++                  |                  +++
              |                   |                   |
             +++     Upload      +++                 +++
             |-|================>|-|                 |-|
             |-|                 |-|                 |-|
             |-|     Response    |-|                 |-|
             |-|<================|-|                 |-|
             +++                 +++                 +++
              |                   |                   |

使用知晓云开放 API 上传文件需要以下两个步骤：

1. 获取上传文件所需授权凭证和上传地址

接口

POST https://cloud.minapp.com/userve/v1/upload/

参数说明

Content-Type: application/json

参数 类型 必填 说明
filename String N 上传的文件名
category_id String N 文件分类 ID

返回参数

参数 类型 说明
id String 上传的文件 ID
policy String 文件上传配置
authorization String 文件上传凭证
file_link String 文件上传成功后的访问地址
upload_url String 上传文件的目标地址

代码示例

var axios = require('axios').create({
  withCredentials: true
})

axios.post('https://cloud.minapp.com/userve/v1/upload/', {
  filename: 'crop.gif',
  category_id: '5a1ba7b708443e7fc5f2fb18'
}).then(res => {
  console.log(res.data)
})

返回示例

{
    "policy": "eyJkYXRlIjogIldlZCwgMDYgRGVjIDIwMTcgMDM6MzI6MzMgR01UIiwgIm5vdGlmeS11cmwiOiAiaHR0cHM6Ly9zc28uaWZhbnIuY29tL2V4dGFwaS9oeWRyb2dlbi91cHl1bi9jYWxsYmFjay8yODcvNWEyNzY0ZDFmZmYxZDYxYWQwZWNhMjQ1LyIsICJidWNrZXQiOiAiY2xvdWQtbWluYXBwLTI4NyIsICJzYXZlLWtleSI6ICIxZU1RUmxrSndoZ2FNaUNnLmdpZiIsICJleHBpcmF0aW9uIjogMTUxMjUzMTQ1M30=",
    "upload_url": "https://v0.api.upyun.com/cloud-minapp-287",
    "file_link": "https://cloud-minapp-287.cloud.ifanrusercontent.com/1eMQRlkJwhgaMiCg.gif",
    "id": "5a2764d1fff1d61ad0eca245",
    "authorization": "UPYUN allenzhang:MzmYCcWVjrWoeovC4+tM5Bgwusg="
}

状态码说明

200 获得授权凭证成功，400 参数错误（不支持上传的文件格式)，404 找不到文件分类 ID

2. 使用上一步获取的授权凭证和上传地址，进行文件上传

接口

POST {UPLOAD_URL}

UPLOAD_URL 是调用上一步的接口所返回的字段 upload_url 的值，形如：

  https://v0.api.upyun.com/cloud-minapp-287

参数说明

Content-Type: multipart/form-data

参数 类型 必填 说明
authorization String Y 授权凭证
file String Y 上传的文件流
policy String Y 授权凭证

代码示例

// 注意这里不能使用 withCredentials: true
// var axios = require('axios').create({
//  withCredentials: true
// })

let formData = new FormData()
formData.append('file', fileObj)
formData.append('policy', 'eyJkYXRlIjogIldlZCwgMDYgRGVjIDIwMTcgMDM6MzI6MzMgR01UIiwgIm5vdGlmeS11cmwiOiAiaHR0cHM6Ly9zc28uaWZhbnIuY29tL2V4dGFwaS9oeWRyb2dlbi91cHl1bi9jYWxsYmFjay8yODcvNWEyNzY0ZDFmZmYxZDYxYWQwZWNhMjQ1LyIsICJidWNrZXQiOiAiY2xvdWQtbWluYXBwLTI4NyIsICJzYXZlLWtleSI6ICIxZU1RUmxrSndoZ2FNaUNnLmdpZiIsICJleHBpcmF0aW9uIjogMTUxMjUzMTQ1M30')
formData.append('authorization', 'UPYUN allenzhang:MzmYCcWVjrWoeovC4+tM5Bgwusg=')

axios.post('https://v0.api.upyun.com/cloud-minapp-287', formData, {
  'headers': {'Content-Type': 'multipart/form-data'},
})

返回示例

{
    "image-type": "GIF",
    "image-frames": 8,
    "image-height": 8,
    "code": 200,
    "file_size": 329,
    "image-width": 8,
    "url": "1eMQRlkJwhgaMiCg.gif",
    "time": 1512531154,
    "message": "ok",
    "mimetype": "image/gif"
}

状态码说明

200 上传成功

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