fix():修改s3为阿里云oss

internal/config/config.go

@@ -83,7 +83,8 @@ type OssConfig struct {
 	AccessKeyID      string        `mapstructure:"access_key_id"`
 	AccessKeySecret  string        `mapstructure:"access_key_secret"`
 	Bucket           string        `mapstructure:"bucket"`
-	AssumeRoleArn    string        `mapstructure:"assume_role_arn"`
+	UploadMaxSize    int64         `mapstructure:"upload_max_size"` // 上传文件最大大小(字节)
+	AssumeRoleArn    string        `mapstructure:"assume_role_arn"` // AWS S3专用,阿里云不需要
 	PresignUrlExpire time.Duration `mapstructure:"presign_url_expire"`
 }
 

internal/oss/s3.go

@@ -39,7 +39,18 @@ func initClient() error {
 			Credentials: credentials.NewStaticCredentialsProvider(cfg.AccessKeyID, cfg.AccessKeySecret, ""),
 		}
 
-		s3c := s3.NewFromConfig(awsCfg)
+		// 如果配置了自定义 endpoint (如阿里云 OSS),则设置 endpoint resolver
+		if cfg.Endpoint != "" {
+			awsCfg.BaseEndpoint = aws.String("https://" + cfg.Endpoint)
+		}
+
+		// 创建 S3 客户端,使用虚拟主机样式(阿里云 OSS 要求)
+		s3c := s3.NewFromConfig(awsCfg, func(o *s3.Options) {
+			// 阿里云 OSS 使用虚拟主机样式: bucket.endpoint/key
+			// AWS S3 默认也是虚拟主机样式,所以保持 UsePathStyle = false (默认值)
+			o.UsePathStyle = false
+		})
+
 		c = &s3Client{
 			client:  s3c,
 			presign: s3.NewPresignClient(s3c),