修改完善这个专利部分

backend/config.py

@@ -1,14 +1,48 @@
+import os
+from pathlib import Path
+
+try:
+    from dotenv import load_dotenv
+except ImportError:
+    def load_dotenv(*args, **kwargs):
+        return False
+
 base_url = "https://api.coze.cn/v1"
 coze_token = "sat_12nW40INoJxArrDXbY4lSCoudbqkOYTcphC99BP2efWyzxmsk4q81WDX3ezWgqZ5"
 workflow_id = "7608812635877900322"
 STITCH_WORKFLOW_ID = "7608813873483300907"
 
+BASE_DIR = Path(__file__).resolve().parent
+LOADED_ENV_FILES = []
+
+
+def _load_env_files():
+    candidates = (
+        BASE_DIR / ".env",
+        BASE_DIR.parent / "app" / ".env",
+        BASE_DIR.parent / ".env",
+    )
+    for env_path in candidates:
+        if env_path.is_file():
+            load_dotenv(dotenv_path=env_path, override=False)
+            LOADED_ENV_FILES.append(str(env_path))
+
+
+def _get_env(*names, default=None):
+    for name in names:
+        value = os.getenv(name)
+        if value not in (None, ""):
+            return value, name
+    return default, "config.default"
+
+
+_load_env_files()
 
 # MySQL 配置
-mysql_host = "8.136.19.173"
-mysql_user = "aiimage"
-mysql_password = "WTFrb5y6hNLz6hNy"  # 请修改为您的数据库密码
-mysql_database = "aiimage"
+mysql_host, mysql_host_source = _get_env("mysql_host", "MYSQL_HOST", default="47.110.241.161")
+mysql_user, mysql_user_source = _get_env("mysql_user", "MYSQL_USER", default="aiimage")
+mysql_password, mysql_password_source = _get_env("mysql_password", "MYSQL_PASSWORD", default="WTFrb5y6hNLz6hNy")
+mysql_database, mysql_database_source = _get_env("mysql_database", "MYSQL_DATABASE", default="aiimage")
 
 
 cache_path = "./user_data"
@@ -22,20 +56,20 @@ bucket_path = "nanri-image/"
 
 file_url_pre = f"https://{bucket}.oss-cn-hangzhou.aliyuncs.com/"
 
-import os
-backend_java_base_url = os.environ.get('BACKEND_JAVA_BASE_URL', 'http://127.0.0.1:18080').rstrip('/')
-# backend_java_base_url = os.environ.get('BACKEND_JAVA_BASE_URL', 'http://8.136.19.173:18080').rstrip('/')
-# backend_java_base_url = os.environ.get('BACKEND_JAVA_BASE_URL', 'http://47.111.163.154:18080').rstrip('/')
-# backend_java_base_url = os.environ.get('BACKEND_JAVA_BASE_URL', 'http://121.196.149.225:18080').rstrip('/')
-os.environ['OSS_ACCESS_KEY_ID'] = accessKeyId
-os.environ['OSS_ACCESS_KEY_SECRET'] = accessKeySecret
-os.environ['SECRET_KEY'] = "ddffc7c1d02121d9554d7b080b2511b6"
+backend_java_base_url, backend_java_base_url_source = _get_env(
+    "java_api_base",
+    "BACKEND_JAVA_BASE_URL",
+    default="http://127.0.0.1:18080",
+    # default="http://47.111.163.154:18080",
+)
+backend_java_base_url = backend_java_base_url.rstrip("/")
+os.environ["OSS_ACCESS_KEY_ID"] = accessKeyId
+os.environ["OSS_ACCESS_KEY_SECRET"] = accessKeySecret
+os.environ["SECRET_KEY"] = "ddffc7c1d02121d9554d7b080b2511b6"
 
 
 debug = True
 version = "1.0.0"
 APP_UPDATE_URL = ""
-os.environ['APP_VERSION'] = version
-os.environ['APP_UPDATE_URL'] = version
-
-
+os.environ["APP_VERSION"] = version
+os.environ["APP_UPDATE_URL"] = version