352 lines
10 KiB
Go
352 lines
10 KiB
Go
package utils
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import (
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"ai_xhs/config"
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"fmt"
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"io"
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"mime"
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"mime/multipart"
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"path/filepath"
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"strings"
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"time"
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"github.com/aliyun/aliyun-oss-go-sdk/oss"
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"github.com/google/uuid"
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)
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// OSSStorage 阿里云OSS存储服务
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type OSSStorage struct {
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client *oss.Client
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bucket *oss.Bucket
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config *config.OSSConfig
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}
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var ossStorage *OSSStorage
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// InitOSS 初始化OSS客户端
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func InitOSS() error {
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cfg := &config.AppConfig.Upload.OSS
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// 打印详细配置信息用于调试
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fmt.Printf("\n=== OSS初始化配置 ===\n")
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fmt.Printf("Endpoint: [%s]\n", cfg.Endpoint)
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fmt.Printf("AccessKeyID: [%s]\n", cfg.AccessKeyID)
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fmt.Printf("AccessKeySecret: [%s] (长度: %d)\n", cfg.AccessKeySecret, len(cfg.AccessKeySecret))
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fmt.Printf("BucketName: [%s]\n", cfg.BucketName)
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fmt.Printf("BasePath: [%s]\n", cfg.BasePath)
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fmt.Printf("Domain: [%s]\n", cfg.Domain)
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fmt.Printf("==================\n\n")
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// 创建OSSClient实例
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client, err := oss.New(cfg.Endpoint, cfg.AccessKeyID, cfg.AccessKeySecret)
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if err != nil {
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return fmt.Errorf("创建OSS客户端失败: %w", err)
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}
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// 获取存储空间
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bucket, err := client.Bucket(cfg.BucketName)
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if err != nil {
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return fmt.Errorf("获取OSS Bucket失败: %w", err)
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}
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ossStorage = &OSSStorage{
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client: client,
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bucket: bucket,
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config: cfg,
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}
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return nil
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}
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// min 辅助函数
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func min(a, b int) int {
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if a < b {
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return a
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}
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return b
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}
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// UploadFile 上传文件到OSS
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func (s *OSSStorage) UploadFile(file multipart.File, filename string, objectPath string) (string, error) {
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// 生成OSS对象路径
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objectKey := s.generateObjectKey(objectPath, filename)
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// 获取文件MIME类型
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contentType := getContentType(filename)
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// 上传文件到OSS，设置Content-Type和其他元数据
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// 使用 ObjectACL 设置为公共读，确保文件可以直接访问
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err := s.bucket.PutObject(objectKey, file,
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oss.ContentType(contentType),
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oss.ObjectACL(oss.ACLPublicRead),
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oss.ContentDisposition("inline"), // 关键：设置为inline而不是attachment
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)
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if err != nil {
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return "", fmt.Errorf("上传文件到OSS失败: %w", err)
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}
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// 获取OSS返回的文件URL
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fileURL, err := s.GetFileURL(objectKey)
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if err != nil {
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return "", fmt.Errorf("获取OSS文件URL失败: %w", err)
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}
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return fileURL, nil
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}
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// UploadFromBytes 从字节数组上传文件到OSS
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func (s *OSSStorage) UploadFromBytes(data []byte, filename string, objectPath string) (string, error) {
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// 生成OSS对象路径
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objectKey := s.generateObjectKey(objectPath, filename)
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// 获取文件MIME类型
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contentType := getContentType(filename)
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// 上传文件到OSS，设置Content-Type和其他元数据
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err := s.bucket.PutObject(objectKey, strings.NewReader(string(data)),
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oss.ContentType(contentType),
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oss.ObjectACL(oss.ACLPublicRead),
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oss.ContentDisposition("inline"),
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)
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if err != nil {
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return "", fmt.Errorf("上传文件到OSS失败: %w", err)
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}
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// 获取OSS返回的文件URL
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fileURL, err := s.GetFileURL(objectKey)
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if err != nil {
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return "", fmt.Errorf("获取OSS文件URL失败: %w", err)
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}
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return fileURL, nil
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}
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// UploadFromReader 从Reader上传文件到OSS
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func (s *OSSStorage) UploadFromReader(reader io.Reader, filename string, objectPath string) (string, error) {
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// 生成OSS对象路径
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objectKey := s.generateObjectKey(objectPath, filename)
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// 获取文件MIME类型
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contentType := getContentType(filename)
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// 打印详细上传信息
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fmt.Printf("\n=== OSS上传请求 ===\n")
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fmt.Printf("ObjectKey: [%s]\n", objectKey)
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fmt.Printf("ContentType: [%s]\n", contentType)
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fmt.Printf("Endpoint: [%s]\n", s.config.Endpoint)
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fmt.Printf("BucketName: [%s]\n", s.config.BucketName)
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fmt.Printf("AccessKeyID: [%s]\n", s.config.AccessKeyID)
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fmt.Printf("AccessKeySecret: [%s]\n", s.config.AccessKeySecret)
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fmt.Printf("==================\n\n")
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// 上传文件到OSS，设置Content-Type和其他元数据
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err := s.bucket.PutObject(objectKey, reader,
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oss.ContentType(contentType),
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oss.ObjectACL(oss.ACLPublicRead),
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oss.ContentDisposition("inline"),
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)
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if err != nil {
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fmt.Printf("\n!!! OSS上传失败 !!!\n")
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fmt.Printf("错误详情: %v\n", err)
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fmt.Printf("错误类型: %T\n", err)
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fmt.Printf("==================\n\n")
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return "", fmt.Errorf("上传文件到OSS失败: %w", err)
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}
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// 获取OSS返回的文件URL
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fileURL, err := s.GetFileURL(objectKey)
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if err != nil {
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return "", fmt.Errorf("获取OSS文件URL失败: %w", err)
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}
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fmt.Printf("✓ OSS上传成功: %s\n\n", fileURL)
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return fileURL, nil
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}
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// DeleteFile 删除OSS中的文件
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func (s *OSSStorage) DeleteFile(objectKey string) error {
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err := s.bucket.DeleteObject(objectKey)
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if err != nil {
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return fmt.Errorf("删除OSS文件失败: %w", err)
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}
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return nil
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}
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// IsObjectExist 检查对象是否存在
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func (s *OSSStorage) IsObjectExist(objectKey string) (bool, error) {
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exist, err := s.bucket.IsObjectExist(objectKey)
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if err != nil {
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return false, fmt.Errorf("检查OSS对象是否存在失败: %w", err)
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}
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return exist, nil
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}
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// GetFileURL 获取文件访问URL（使用OSS SDK标准方法）
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func (s *OSSStorage) GetFileURL(objectKey string) (string, error) {
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// 如果配置了自定义域名，使用自定义域名
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if s.config.Domain != "" {
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// 确保 Domain 以 https:// 开头
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domain := s.config.Domain
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if !strings.HasPrefix(domain, "http://") && !strings.HasPrefix(domain, "https://") {
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domain = "https://" + domain
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}
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url := fmt.Sprintf("%s/%s", strings.TrimRight(domain, "/"), objectKey)
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return url, nil
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}
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// 使用OSS SDK获取对象的公共URL
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// 正确格式：https://bucket-name.endpoint/objectKey
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// Endpoint 不应该包含 https://
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endpoint := s.config.Endpoint
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// 移除 endpoint 中可能存在的协议前缀
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endpoint = strings.TrimPrefix(endpoint, "https://")
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endpoint = strings.TrimPrefix(endpoint, "http://")
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endpoint = strings.TrimRight(endpoint, "/")
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// 移除 objectKey 开头的斜杠
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objectKey = strings.TrimLeft(objectKey, "/")
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url := fmt.Sprintf("https://%s.%s/%s", s.config.BucketName, endpoint, objectKey)
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return url, nil
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}
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// GeneratePresignedURL 生成临时访问URL（带签名）
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func (s *OSSStorage) GeneratePresignedURL(objectKey string, expireSeconds int64) (string, error) {
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signedURL, err := s.bucket.SignURL(objectKey, oss.HTTPGet, expireSeconds)
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if err != nil {
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return "", fmt.Errorf("生成预签名URL失败: %w", err)
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}
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return signedURL, nil
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}
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// generateObjectKey 生成OSS对象键名
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func (s *OSSStorage) generateObjectKey(objectPath string, filename string) string {
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// 组合基础路径和对象路径
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basePath := strings.TrimRight(s.config.BasePath, "/")
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objectPath = strings.TrimLeft(objectPath, "/")
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// OSS 路径统一使用斜杠，避免 Windows 下使用反斜杠
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if basePath == "" {
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return strings.ReplaceAll(filepath.ToSlash(filepath.Join(objectPath, filename)), "\\", "/")
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}
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return strings.ReplaceAll(filepath.ToSlash(filepath.Join(basePath, objectPath, filename)), "\\", "/")
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}
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// UploadToOSS 上传文件到OSS（兼容旧接口）
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func UploadToOSS(reader io.Reader, originalFilename string) (string, error) {
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if ossStorage == nil {
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return "", fmt.Errorf("OSS未初始化，请先调用InitOSS()")
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}
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// 生成唯一文件名
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filename := GenerateFilename(originalFilename)
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// 使用日期目录作为路径
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objectPath := time.Now().Format("20060102")
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return ossStorage.UploadFromReader(reader, filename, objectPath)
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}
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// DeleteFromOSS 从OSS删除文件（兼容旧接口）
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func DeleteFromOSS(fileURL string) error {
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if ossStorage == nil {
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return fmt.Errorf("OSS未初始化")
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}
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cfg := ossStorage.config
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// 从URL中提取ObjectKey
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var objectKey string
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if cfg.Domain != "" {
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// 自定义域名格式: https://domain.com/path/file.jpg
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domain := cfg.Domain
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if !strings.HasPrefix(domain, "http://") && !strings.HasPrefix(domain, "https://") {
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domain = "https://" + domain
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}
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objectKey = strings.TrimPrefix(fileURL, fmt.Sprintf("%s/", strings.TrimRight(domain, "/")))
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} else {
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// 默认域名格式: https://bucket.endpoint/path/file.jpg
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endpoint := strings.TrimPrefix(cfg.Endpoint, "https://")
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endpoint = strings.TrimPrefix(endpoint, "http://")
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objectKey = strings.TrimPrefix(fileURL, fmt.Sprintf("https://%s.%s/", cfg.BucketName, endpoint))
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}
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return ossStorage.DeleteFile(objectKey)
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}
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// GenerateFilename 生成唯一文件名
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func GenerateFilename(originalFilename string) string {
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ext := filepath.Ext(originalFilename)
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name := strings.TrimSuffix(originalFilename, ext)
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// 生成时间戳和UUID
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timestamp := time.Now().Format("20060102150405")
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uuidStr := uuid.New().String()[:8]
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// 清理文件名，移除特殊字符
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name = strings.ReplaceAll(name, " ", "_")
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name = strings.ReplaceAll(name, "(", "")
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name = strings.ReplaceAll(name, ")", "")
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return fmt.Sprintf("%s_%s_%s%s", name, timestamp, uuidStr, ext)
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}
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// IsValidImageType 验证图片文件类型
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func IsValidImageType(filename string) bool {
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ext := strings.ToLower(filepath.Ext(filename))
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validExts := []string{".jpg", ".jpeg", ".png", ".gif", ".webp", ".svg"}
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for _, validExt := range validExts {
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if ext == validExt {
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return true
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}
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}
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return false
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}
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// getContentType 根据文件名获取MIME类型
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func getContentType(filename string) string {
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ext := strings.ToLower(filepath.Ext(filename))
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// 常见图片类型
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switch ext {
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case ".jpg", ".jpeg":
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return "image/jpeg"
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case ".png":
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return "image/png"
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case ".gif":
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return "image/gif"
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case ".webp":
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return "image/webp"
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case ".svg":
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return "image/svg+xml"
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case ".bmp":
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return "image/bmp"
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case ".ico":
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return "image/x-icon"
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// 常见文档类型
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case ".pdf":
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return "application/pdf"
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case ".doc":
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return "application/msword"
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case ".docx":
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return "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
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case ".xls":
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return "application/vnd.ms-excel"
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case ".xlsx":
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return "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
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case ".txt":
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return "text/plain; charset=utf-8"
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case ".json":
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return "application/json"
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case ".xml":
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return "application/xml"
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default:
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// 使用Go标准库自动检测
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if mimeType := mime.TypeByExtension(ext); mimeType != "" {
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return mimeType
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}
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// 默认类型
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return "application/octet-stream"
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}
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}
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