Go上傳檔案

package main

import (
	"context"
	"flag"
	"log"
	"strings"

	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials"
)

// 定義全域變數
var (
	region     string // 儲存地區
	bucketName string // 儲存空間名稱
	objectName string // 對象名稱
)

// init函數用於初始化命令列參數
func init() {
	flag.StringVar(&region, "region", "", "The region in which the bucket is located.")
	flag.StringVar(&bucketName, "bucket", "", "The name of the bucket.")
	flag.StringVar(&objectName, "object", "", "The name of the object.")
}

func main() {
	// 解析命令列參數
	flag.Parse()

	// 檢查bucket名稱是否為空白
	if len(bucketName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, bucket name required")
	}

	// 檢查region是否為空白
	if len(region) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, region required")
	}

	// 檢查object名稱是否為空白
	if len(objectName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, object name required")
	}

	// 定義要上傳的內容
	content := "hi oss"

	// 載入預設配置並設定憑證提供者和地區
	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		WithRegion(region)

	// 建立OSS用戶端
	client := oss.NewClient(cfg)

	// 建立上傳對象的請求
	request := &oss.PutObjectRequest{
		Bucket: oss.Ptr(bucketName),        // 儲存空間名稱
		Key:    oss.Ptr(objectName),        // 對象名稱
		Body:   strings.NewReader(content), // 要上傳的內容
	}

	// 執行上傳對象的請求
	result, err := client.PutObject(context.TODO(), request)
	if err != nil {
		log.Fatalf("failed to put object %v", err)
	}

	// 列印上傳對象的versionId
	log.Printf("put object result versionId:%#v\n", *result.VersionId)
}

package main

import (
	"context"
	"flag"
	"log"
	"strings"

	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials"
)

// 定義全域變數
var (
	region     string
	bucketName string
	objectName string
)

// init函數用於初始化命令列參數
func init() {
	flag.StringVar(&region, "region", "", "The region in which the bucket is located.")
	flag.StringVar(&bucketName, "bucket", "", "The name of the bucket.")
	flag.StringVar(&objectName, "object", "", "The name of the object.")
}

func main() {
	// 解析命令列參數
	flag.Parse()

	// 定義追加檔案的初始位置
	var (
		position = int64(0)
	)

	// 檢查bucket名稱是否為空白
	if len(bucketName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, bucket name required")
	}

	// 檢查region是否為空白
	if len(region) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, region required")
	}

	// 檢查object名稱是否為空白
	if len(objectName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, object name required")
	}

	// 載入預設配置並設定憑證提供者和region
	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		WithRegion(region)

	// 建立OSS用戶端
	client := oss.NewClient(cfg)

	// 定義要追加的內容
	content := "hi append object"

	// 建立AppendObject請求
	request := &oss.AppendObjectRequest{
		Bucket:   oss.Ptr(bucketName),
		Key:      oss.Ptr(objectName),
		Position: oss.Ptr(position),
		Body:     strings.NewReader(content),
		Tagging:  oss.Ptr("tag1=value1&tag2=value2"), //設定對象標籤
	}

	// 執行第一次AppendObject請求並處理結果
	// 第一次追加上傳的位置是0，傳回值中包含下一次追加的位置
	result, err := client.AppendObject(context.TODO(), request)
	if err != nil {
		log.Fatalf("failed to append object %v", err)
	}

	// 建立第二次AppendObject請求
	request = &oss.AppendObjectRequest{
		Bucket:   oss.Ptr(bucketName),
		Key:      oss.Ptr(objectName),
		Position: oss.Ptr(result.NextPosition), //從第一次AppendObject傳回值中擷取NextPosition
		Body:     strings.NewReader("hi append object"),
	}

	// 執行第二次AppendObject請求並處理結果
	result, err = client.AppendObject(context.TODO(), request)
	if err != nil {
		log.Fatalf("failed to append object %v", err)
	}

	// 列印追加對象的versionId
	log.Printf("append object result:%#v\n", *result.VersionId)
}

package main

import (
	"bufio"
	"bytes"
	"context"
	"flag"
	"io"
	"log"
	"os"
	"sync"

	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials"
)

// 定義全域變數
var (
	region     string // 儲存地區
	bucketName string // 源儲存空間名稱
	objectName string // 來源物件名稱

)

// init函數用於初始化命令列參數
func init() {
	flag.StringVar(&region, "region", "", "The region in which the bucket is located.")
	flag.StringVar(&bucketName, "bucket", "", "The name of the source bucket.")
	flag.StringVar(&objectName, "object", "", "The name of the source object.")
}

func main() {
	// 解析命令列參數
	flag.Parse()

	// 定義上傳ID
	var uploadId string

	// 檢查源儲存空間名稱是否為空白
	if len(bucketName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, source bucket name required")
	}

	// 檢查儲存地區是否為空白
	if len(region) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, region required")
	}

	// 檢查來源物件名稱是否為空白
	if len(objectName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, source object name required")
	}

	// 載入預設配置並設定憑證提供者和地區
	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		WithRegion(region)

	// 建立OSS用戶端
	client := oss.NewClient(cfg)

	// 初始化分區上傳請求
	initRequest := &oss.InitiateMultipartUploadRequest{
		Bucket: oss.Ptr(bucketName),
		Key:    oss.Ptr(objectName),
	}
	initResult, err := client.InitiateMultipartUpload(context.TODO(), initRequest)
	if err != nil {
		log.Fatalf("failed to initiate multipart upload %v", err)
	}

	// 列印初始化分區上傳的結果
	log.Printf("initiate multipart upload result:%#v\n", *initResult.UploadId)
	uploadId = *initResult.UploadId

	// 初始化等待組和互斥鎖
	var wg sync.WaitGroup
	var parts []oss.UploadPart
	count := 3
	var mu sync.Mutex

	// 讀取本地檔案內容到記憶體，將yourLocalFile替換為實際的本地檔案名稱和路徑
	file, err := os.Open("yourLocalFile")
	if err != nil {
		log.Fatalf("failed to open local file %v", err)
	}
	defer file.Close()

	bufReader := bufio.NewReader(file)
	content, err := io.ReadAll(bufReader)
	if err != nil {
		log.Fatalf("failed to read local file %v", err)
	}
	log.Printf("file size: %d\n", len(content))

	// 計算每個分區的大小
	chunkSize := len(content) / count
	if chunkSize == 0 {
		chunkSize = 1
	}

	// 啟動多個goroutine進行分區上傳
	for i := 0; i < count; i++ {
		start := i * chunkSize
		end := start + chunkSize
		if i == count-1 {
			end = len(content)
		}

		wg.Add(1)
		go func(partNumber int, start, end int) {
			defer wg.Done()

			// 建立分區上傳請求
			partRequest := &oss.UploadPartRequest{
				Bucket:     oss.Ptr(bucketName),                 // 目標儲存空間名稱
				Key:        oss.Ptr(objectName),                 // 目標對象名稱
				PartNumber: int32(partNumber),                   // 分區編號
				UploadId:   oss.Ptr(uploadId),                   // 上傳ID
				Body:       bytes.NewReader(content[start:end]), // 分區內容
			}

			// 發送分區上傳請求
			partResult, err := client.UploadPart(context.TODO(), partRequest)
			if err != nil {
				log.Fatalf("failed to upload part %d: %v", partNumber, err)
			}

			// 記錄分區上傳結果
			part := oss.UploadPart{
				PartNumber: partRequest.PartNumber,
				ETag:       partResult.ETag,
			}

			// 使用互斥鎖保護共用資料
			mu.Lock()
			parts = append(parts, part)
			mu.Unlock()
		}(i+1, start, end)
	}

	// 等待所有goroutine完成
	wg.Wait()

	// 完成分區上傳請求
	request := &oss.CompleteMultipartUploadRequest{
		Bucket:   oss.Ptr(bucketName),
		Key:      oss.Ptr(objectName),
		UploadId: oss.Ptr(uploadId),
		CompleteMultipartUpload: &oss.CompleteMultipartUpload{
			Parts: parts,
		},
	}
	result, err := client.CompleteMultipartUpload(context.TODO(), request)
	if err != nil {
		log.Fatalf("failed to complete multipart upload %v", err)
	}

	// 列印完成分段上傳的versionId
	log.Printf("complete multipart upload result versionId:%#v\n", *result.VersionId)
}