解决跨越问题

backend/app/config.py

@@ -1,28 +1,38 @@
 """
 Application configuration
 """
-from pydantic_settings import BaseSettings
-from pydantic import Field, field_validator
+from typing import Union
+from pydantic_settings import BaseSettings, SettingsConfigDict
+from pydantic import Field, field_validator, ValidationInfo
+
+
+def parse_cors_origins(v: Union[str, list]) -> list[str]:
+    """Parse CORS origins from comma-separated string or list"""
+    if isinstance(v, str):
+        # Parse comma-separated string
+        return [origin.strip() for origin in v.split(',') if origin.strip()]
+    if isinstance(v, list):
+        return v
+    return ["*"]
 
 
 class Settings(BaseSettings):
     """Application settings"""
 
+    model_config = SettingsConfigDict(env_file=".env")
+
     # Application
     app_name: str = "Cosmo - Deep Space Explorer"
     api_prefix: str = "/api"
 
     # CORS settings - allow all origins for development (IP access support)
-    cors_origins: list[str] = ["*"]
+    cors_origins: list[str] = Field(default_factory=lambda: ["*"])
 
     @field_validator('cors_origins', mode='before')
     @classmethod
-    def parse_cors_origins(cls, v):
+    def validate_cors_origins(cls, v: Union[str, list], info: ValidationInfo) -> list[str]:
         """Parse CORS origins from comma-separated string or JSON array"""
-        if isinstance(v, str):
-            # Parse comma-separated string
-            return [origin.strip() for origin in v.split(',') if origin.strip()]
-        return v
+        return parse_cors_origins(v)
 
     # Cache settings
     cache_ttl_days: int = 3
@@ -67,8 +77,5 @@ class Settings(BaseSettings):
             return f"redis://:{self.redis_password}@{self.redis_host}:{self.redis_port}/{self.redis_db}"
         return f"redis://{self.redis_host}:{self.redis_port}/{self.redis_db}"
 
-    class Config:
-        env_file = ".env"
-
 
 settings = Settings()