使用golang调用阿里云oss接口_go对接oss

逻辑:

• 初始化oss client: 需要endpoint,accessKeyId,accessSecret三个参数, 我的oss服务是在成都,所以endpoint的链接为 link, 如果是杭州则将后缀的chengdu更改为hangzhou即可!
• 获取forfile文件header: ctx.Fromfile获取文件header, 与时间戳共同构成新的文件名作为bucketKey!
• 判断bucket是否存在: IsBucketExist, 不存在则创建
• put object: readall将文件数据读出来保存在byte切片中,再使用bytes.reader作为数据源put object

接口测试

curl -X POST -F "file=@${file_path}" 127.0.0.1:9999/oss/upload
1

代码

package main

import (
	"bytes"
	"fmt"
	"io/ioutil"
	"net/http"
	"strconv"
	"strings"
	"time"

	"github.com/aliyun/aliyun-oss-go-sdk/oss"
	"github.com/gin-gonic/gin"
)

/*

 */

const (
	EndPoint     = "https://oss-cn-chengdu.aliyuncs.com"
	AccessKeyId  = "LTAI5tG54xxxt1pwmknxx6"
	AccessSecret = "gCYMvWMsxxxxxnsvn24QxxxxEBdcvsm"
	BucketName   = "alenza"

	UploadSuccess = 0
	UploadFailed  = 1
)

func init() {
	var err error
	oc.client, err = oss.New(EndPoint, AccessKeyId, AccessSecret)
	if err != nil {
		fmt.Println(err)
		return
	}
}

var oc osscurd

type osscurd struct {
	client *oss.Client
}

func (o *osscurd) upload(ctx *gin.Context) {
	// 1. get fileHeader
	fileHeader, err := ctx.FormFile("file")
	if err != nil {
		ctx.JSON(http.StatusBadRequest, gin.H{
			"code": UploadFailed,
			"msg":  err.Error(),
		})
		return
	}
	ts := time.Now().Unix()
	tsStr := strconv.FormatInt(ts, 10)
	before, after, _ := strings.Cut(fileHeader.Filename, ".")
	newFileName := before + "_" + tsStr + "." + after // usage of bucket_file_name

	// 2. bucket
	exist, err := oc.client.IsBucketExist(BucketName)
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, gin.H{
			"code": UploadFailed,
			"msg":  err.Error(),
		})
		return
	}

	if !exist {
		if err := oc.client.CreateBucket(BucketName); err != nil {
			ctx.JSON(http.StatusInternalServerError, gin.H{
				"code": UploadFailed,
				"msg":  err.Error(),
			})
			return
		}
	}

	bucketIns, err := oc.client.Bucket(BucketName)
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, gin.H{
			"code": UploadFailed,
			"msg":  err.Error(),
		})
		return
	}

	// 3. upload
	fd, err := fileHeader.Open()
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, gin.H{
			"code": UploadFailed,
			"msg":  err.Error(),
		})
		return
	}
	fileBytes, err := ioutil.ReadAll(fd)
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, gin.H{
			"code": UploadFailed,
			"msg":  err.Error(),
		})
		return
	}
	if err = bucketIns.PutObject(newFileName, bytes.NewReader(fileBytes)); err != nil {
		ctx.JSON(http.StatusInternalServerError, gin.H{
			"code": UploadFailed,
			"msg":  err.Error(),
		})
	} else {
		ctx.JSON(http.StatusOK, gin.H{
			"code": UploadSuccess,
			"msg":  fileHeader.Filename + " upload success! object key: " + newFileName,
		})
		return
	}

}

func main() {
	e := gin.Default()

	e.POST("/oss/put", oc.upload)

	e.Run(":9999")
}

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