# aliyun-oss-appserver-go
通过Web端上传数据到OSS. 服务端签名直传并设置上传回调.
## 安装
[https://github.com/alphasnow/aliyun-oss-appserver-go](https://github.com/alphasnow/aliyun-oss-appserver-go)
```shell
go get -u github.com/alphasnow/aliyun-oss-appserver-go
```
## 示例
### 生成授权
```go
token := appserver.NewToken(&Config{
AccessKeyId: "yourAccessKeyId",
AccessKeySecret: "yourAccessKeySecret",
Host: "https://bucket-name.oss-cn-hangzhou.aliyuncs.com",
Directory: "user-dir-prefix/",
ExpireSecond: 600,
// 回调只支持 PutObject, PostObject, CompleteMultipartUpload
CallbackUrl: "http://domain.com/oss/callback",
})
postToken, _ := token.Generate()
postTokenJson, _ := json.Marshal(postToken)
//{
// "OSSAccessKeyId": "yourAccessKeyId",
// "policy": "eyJleHBpcmF0aW9uIjoiMjAyNS0wMS0wMVQwMDowMDowMFoiLCJjb25kaXRpb25zIjpbWyJzdGFydHMtd2l0aCIsIiRrZXkiLCJ1c2VyLWRpci1wcmVmaXgvIl1dfQ==",
// "callback": "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",
// "signature": "uXL82wU5IGCd7vcZKX9gua5TUJs=",
// "host": "https://bucket-name.oss-cn-hangzhou.aliyuncs.com",
// "expire": 1735689600,
// "directory": "user-dir-prefix/"
//}
```
## 上传文件
```bash
curl --location "https://bucket-name.oss-cn-hangzhou.aliyuncs.com" \
--form 'key="user-dir-prefix/${filename}"' \
--form 'policy="eyJleHBpcmF0aW9uIjoiMjAyNS0wMS0wMVQwMDowMDowMFoiLCJjb25kaXRpb25zIjpbWyJzdGFydHMtd2l0aCIsIiRrZXkiLCJ1c2VyLWRpci1wcmVmaXgvIl1dfQ=="' \
--form 'OSSAccessKeyId="yourAccessKeyId"' \
--form 'callback="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"' \
--form 'signature="uXL82wU5IGCd7vcZKX9gua5TUJs="' \
--form 'file=@"~/Downloads/image.jpg"'
```
## 回调验证
```go
aliyunOSSCallback := appserver.NewAliyunOSSCallback(request)
callbackBody,err := aliyunOSSCallback.VerifySignature()
//{
// "bucket": "bucket-name",
// "object": "user-dir-prefix/image.jpg",
// "etag": "A3AC1B2FAADBD*****EE9F5EA57CAACB",
// "size": 2788,
// "mimeType": "image/jpeg",
// "imageInfo": {
// "height": 197,
// "width": 257,
// "format": "jpg"
// },
// "crc64": 34616313***72852000,
// "contentMd5": "o6wbL6rb0***7p9epXyqyw==",
// "vpcId": null,
// "clientIp": "100.20.30.40",
// "reqId": "674EB5AA2*****37341888F8",
// "operation": "PutObject"
//}
```
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