commit

2026-01-06 19:36:42 +08:00
parent 15b579d64a
commit 19942144fb
261 changed files with 24034 additions and 5477 deletions
--- a/go_backend/utils/oss.go
+++ b/go_backend/utils/oss.go
@@ -0,0 +1,351 @@
+package utils
+
+import (
+	"ai_xhs/config"
+	"fmt"
+	"io"
+	"mime"
+	"mime/multipart"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/aliyun/aliyun-oss-go-sdk/oss"
+	"github.com/google/uuid"
+)
+
+// OSSStorage 阿里云OSS存储服务
+type OSSStorage struct {
+	client *oss.Client
+	bucket *oss.Bucket
+	config *config.OSSConfig
+}
+
+var ossStorage *OSSStorage
+
+// InitOSS 初始化OSS客户端
+func InitOSS() error {
+	cfg := &config.AppConfig.Upload.OSS
+
+	// 打印详细配置信息用于调试
+	fmt.Printf("\n=== OSS初始化配置 ===\n")
+	fmt.Printf("Endpoint: [%s]\n", cfg.Endpoint)
+	fmt.Printf("AccessKeyID: [%s]\n", cfg.AccessKeyID)
+	fmt.Printf("AccessKeySecret: [%s] (长度: %d)\n", cfg.AccessKeySecret, len(cfg.AccessKeySecret))
+	fmt.Printf("BucketName: [%s]\n", cfg.BucketName)
+	fmt.Printf("BasePath: [%s]\n", cfg.BasePath)
+	fmt.Printf("Domain: [%s]\n", cfg.Domain)
+	fmt.Printf("==================\n\n")
+
+	// 创建OSSClient实例
+	client, err := oss.New(cfg.Endpoint, cfg.AccessKeyID, cfg.AccessKeySecret)
+	if err != nil {
+		return fmt.Errorf("创建OSS客户端失败: %w", err)
+	}
+
+	// 获取存储空间
+	bucket, err := client.Bucket(cfg.BucketName)
+	if err != nil {
+		return fmt.Errorf("获取OSS Bucket失败: %w", err)
+	}
+
+	ossStorage = &OSSStorage{
+		client: client,
+		bucket: bucket,
+		config: cfg,
+	}
+
+	return nil
+}
+
+// min 辅助函数
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+// UploadFile 上传文件到OSS
+func (s *OSSStorage) UploadFile(file multipart.File, filename string, objectPath string) (string, error) {
+	// 生成OSS对象路径
+	objectKey := s.generateObjectKey(objectPath, filename)
+
+	// 获取文件MIME类型
+	contentType := getContentType(filename)
+
+	// 上传文件到OSS，设置Content-Type和其他元数据
+	// 使用 ObjectACL 设置为公共读，确保文件可以直接访问
+	err := s.bucket.PutObject(objectKey, file,
+		oss.ContentType(contentType),
+		oss.ObjectACL(oss.ACLPublicRead),
+		oss.ContentDisposition("inline"), // 关键：设置为inline而不是attachment
+	)
+	if err != nil {
+		return "", fmt.Errorf("上传文件到OSS失败: %w", err)
+	}
+
+	// 获取OSS返回的文件URL
+	fileURL, err := s.GetFileURL(objectKey)
+	if err != nil {
+		return "", fmt.Errorf("获取OSS文件URL失败: %w", err)
+	}
+	return fileURL, nil
+}
+
+// UploadFromBytes 从字节数组上传文件到OSS
+func (s *OSSStorage) UploadFromBytes(data []byte, filename string, objectPath string) (string, error) {
+	// 生成OSS对象路径
+	objectKey := s.generateObjectKey(objectPath, filename)
+
+	// 获取文件MIME类型
+	contentType := getContentType(filename)
+
+	// 上传文件到OSS，设置Content-Type和其他元数据
+	err := s.bucket.PutObject(objectKey, strings.NewReader(string(data)),
+		oss.ContentType(contentType),
+		oss.ObjectACL(oss.ACLPublicRead),
+		oss.ContentDisposition("inline"),
+	)
+	if err != nil {
+		return "", fmt.Errorf("上传文件到OSS失败: %w", err)
+	}
+
+	// 获取OSS返回的文件URL
+	fileURL, err := s.GetFileURL(objectKey)
+	if err != nil {
+		return "", fmt.Errorf("获取OSS文件URL失败: %w", err)
+	}
+	return fileURL, nil
+}
+
+// UploadFromReader 从Reader上传文件到OSS
+func (s *OSSStorage) UploadFromReader(reader io.Reader, filename string, objectPath string) (string, error) {
+	// 生成OSS对象路径
+	objectKey := s.generateObjectKey(objectPath, filename)
+
+	// 获取文件MIME类型
+	contentType := getContentType(filename)
+
+	// 打印详细上传信息
+	fmt.Printf("\n=== OSS上传请求 ===\n")
+	fmt.Printf("ObjectKey: [%s]\n", objectKey)
+	fmt.Printf("ContentType: [%s]\n", contentType)
+	fmt.Printf("Endpoint: [%s]\n", s.config.Endpoint)
+	fmt.Printf("BucketName: [%s]\n", s.config.BucketName)
+	fmt.Printf("AccessKeyID: [%s]\n", s.config.AccessKeyID)
+	fmt.Printf("AccessKeySecret: [%s]\n", s.config.AccessKeySecret)
+	fmt.Printf("==================\n\n")
+
+	// 上传文件到OSS，设置Content-Type和其他元数据
+	err := s.bucket.PutObject(objectKey, reader,
+		oss.ContentType(contentType),
+		oss.ObjectACL(oss.ACLPublicRead),
+		oss.ContentDisposition("inline"),
+	)
+	if err != nil {
+		fmt.Printf("\n!!! OSS上传失败 !!!\n")
+		fmt.Printf("错误详情: %v\n", err)
+		fmt.Printf("错误类型: %T\n", err)
+		fmt.Printf("==================\n\n")
+		return "", fmt.Errorf("上传文件到OSS失败: %w", err)
+	}
+
+	// 获取OSS返回的文件URL
+	fileURL, err := s.GetFileURL(objectKey)
+	if err != nil {
+		return "", fmt.Errorf("获取OSS文件URL失败: %w", err)
+	}
+
+	fmt.Printf("✓ OSS上传成功: %s\n\n", fileURL)
+	return fileURL, nil
+}
+
+// DeleteFile 删除OSS中的文件
+func (s *OSSStorage) DeleteFile(objectKey string) error {
+	err := s.bucket.DeleteObject(objectKey)
+	if err != nil {
+		return fmt.Errorf("删除OSS文件失败: %w", err)
+	}
+	return nil
+}
+
+// IsObjectExist 检查对象是否存在
+func (s *OSSStorage) IsObjectExist(objectKey string) (bool, error) {
+	exist, err := s.bucket.IsObjectExist(objectKey)
+	if err != nil {
+		return false, fmt.Errorf("检查OSS对象是否存在失败: %w", err)
+	}
+	return exist, nil
+}
+
+// GetFileURL 获取文件访问URL（使用OSS SDK标准方法）
+func (s *OSSStorage) GetFileURL(objectKey string) (string, error) {
+	// 如果配置了自定义域名，使用自定义域名
+	if s.config.Domain != "" {
+		// 确保 Domain 以 https:// 开头
+		domain := s.config.Domain
+		if !strings.HasPrefix(domain, "http://") && !strings.HasPrefix(domain, "https://") {
+			domain = "https://" + domain
+		}
+		url := fmt.Sprintf("%s/%s", strings.TrimRight(domain, "/"), objectKey)
+		return url, nil
+	}
+
+	// 使用OSS SDK获取对象的公共URL
+	// 正确格式：https://bucket-name.endpoint/objectKey
+	// Endpoint 不应该包含 https://
+	endpoint := s.config.Endpoint
+	// 移除 endpoint 中可能存在的协议前缀
+	endpoint = strings.TrimPrefix(endpoint, "https://")
+	endpoint = strings.TrimPrefix(endpoint, "http://")
+	endpoint = strings.TrimRight(endpoint, "/")
+
+	// 移除 objectKey 开头的斜杠
+	objectKey = strings.TrimLeft(objectKey, "/")
+
+	url := fmt.Sprintf("https://%s.%s/%s", s.config.BucketName, endpoint, objectKey)
+	return url, nil
+}
+
+// GeneratePresignedURL 生成临时访问URL（带签名）
+func (s *OSSStorage) GeneratePresignedURL(objectKey string, expireSeconds int64) (string, error) {
+	signedURL, err := s.bucket.SignURL(objectKey, oss.HTTPGet, expireSeconds)
+	if err != nil {
+		return "", fmt.Errorf("生成预签名URL失败: %w", err)
+	}
+	return signedURL, nil
+}
+
+// generateObjectKey 生成OSS对象键名
+func (s *OSSStorage) generateObjectKey(objectPath string, filename string) string {
+	// 组合基础路径和对象路径
+	basePath := strings.TrimRight(s.config.BasePath, "/")
+	objectPath = strings.TrimLeft(objectPath, "/")
+
+	// OSS 路径统一使用斜杠，避免 Windows 下使用反斜杠
+	if basePath == "" {
+		return strings.ReplaceAll(filepath.ToSlash(filepath.Join(objectPath, filename)), "\\", "/")
+	}
+
+	return strings.ReplaceAll(filepath.ToSlash(filepath.Join(basePath, objectPath, filename)), "\\", "/")
+}
+
+// UploadToOSS 上传文件到OSS（兼容旧接口）
+func UploadToOSS(reader io.Reader, originalFilename string) (string, error) {
+	if ossStorage == nil {
+		return "", fmt.Errorf("OSS未初始化，请先调用InitOSS()")
+	}
+
+	// 生成唯一文件名
+	filename := GenerateFilename(originalFilename)
+
+	// 使用日期目录作为路径
+	objectPath := time.Now().Format("20060102")
+
+	return ossStorage.UploadFromReader(reader, filename, objectPath)
+}
+
+// DeleteFromOSS 从OSS删除文件（兼容旧接口）
+func DeleteFromOSS(fileURL string) error {
+	if ossStorage == nil {
+		return fmt.Errorf("OSS未初始化")
+	}
+
+	cfg := ossStorage.config
+
+	// 从URL中提取ObjectKey
+	var objectKey string
+	if cfg.Domain != "" {
+		// 自定义域名格式: https://domain.com/path/file.jpg
+		domain := cfg.Domain
+		if !strings.HasPrefix(domain, "http://") && !strings.HasPrefix(domain, "https://") {
+			domain = "https://" + domain
+		}
+		objectKey = strings.TrimPrefix(fileURL, fmt.Sprintf("%s/", strings.TrimRight(domain, "/")))
+	} else {
+		// 默认域名格式: https://bucket.endpoint/path/file.jpg
+		endpoint := strings.TrimPrefix(cfg.Endpoint, "https://")
+		endpoint = strings.TrimPrefix(endpoint, "http://")
+		objectKey = strings.TrimPrefix(fileURL, fmt.Sprintf("https://%s.%s/", cfg.BucketName, endpoint))
+	}
+
+	return ossStorage.DeleteFile(objectKey)
+}
+
+// GenerateFilename 生成唯一文件名
+func GenerateFilename(originalFilename string) string {
+	ext := filepath.Ext(originalFilename)
+	name := strings.TrimSuffix(originalFilename, ext)
+
+	// 生成时间戳和UUID
+	timestamp := time.Now().Format("20060102150405")
+	uuidStr := uuid.New().String()[:8]
+
+	// 清理文件名，移除特殊字符
+	name = strings.ReplaceAll(name, " ", "_")
+	name = strings.ReplaceAll(name, "(", "")
+	name = strings.ReplaceAll(name, ")", "")
+
+	return fmt.Sprintf("%s_%s_%s%s", name, timestamp, uuidStr, ext)
+}
+
+// IsValidImageType 验证图片文件类型
+func IsValidImageType(filename string) bool {
+	ext := strings.ToLower(filepath.Ext(filename))
+	validExts := []string{".jpg", ".jpeg", ".png", ".gif", ".webp", ".svg"}
+
+	for _, validExt := range validExts {
+		if ext == validExt {
+			return true
+		}
+	}
+	return false
+}
+
+// getContentType 根据文件名获取MIME类型
+func getContentType(filename string) string {
+	ext := strings.ToLower(filepath.Ext(filename))
+
+	// 常见图片类型
+	switch ext {
+	case ".jpg", ".jpeg":
+		return "image/jpeg"
+	case ".png":
+		return "image/png"
+	case ".gif":
+		return "image/gif"
+	case ".webp":
+		return "image/webp"
+	case ".svg":
+		return "image/svg+xml"
+	case ".bmp":
+		return "image/bmp"
+	case ".ico":
+		return "image/x-icon"
+	// 常见文档类型
+	case ".pdf":
+		return "application/pdf"
+	case ".doc":
+		return "application/msword"
+	case ".docx":
+		return "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
+	case ".xls":
+		return "application/vnd.ms-excel"
+	case ".xlsx":
+		return "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
+	case ".txt":
+		return "text/plain; charset=utf-8"
+	case ".json":
+		return "application/json"
+	case ".xml":
+		return "application/xml"
+	default:
+		// 使用Go标准库自动检测
+		if mimeType := mime.TypeByExtension(ext); mimeType != "" {
+			return mimeType
+		}
+		// 默认类型
+		return "application/octet-stream"
+	}
+}