新建小程序后端，新建数据库

mini-program/app/main.py

@@ -0,0 +1,35 @@
+import os
+
+from fastapi import FastAPI
+
+try:
+    # For module mode: `uvicorn app.main:app`
+    from app.routers.health import router as health_router
+    from app.settings import settings
+except ModuleNotFoundError:
+    # For script mode: `python app/main.py` or VS Code "Run Python File"
+    from routers.health import router as health_router
+    from settings import settings
+
+
+def create_app() -> FastAPI:
+    app = FastAPI(
+        title=settings.app_name,
+        version=settings.app_version,
+        description=settings.app_description,
+    )
+    app.include_router(health_router)
+    return app
+
+
+app = create_app()
+
+
+if __name__ == "__main__":
+    import uvicorn
+
+    uvicorn.run(
+        app,
+        host=os.getenv("HOST", settings.host),
+        port=int(os.getenv("PORT", str(settings.port))),
+    )