1.在createBrowserRouter上添加basename属性，比如

const RouterRender = createBrowserRouter([{path: '/',element: <App><Login></Login></App>},...SystemRouter,...InventoryRouter,...FlowManageRouter,{path: "*",element: <Navigate to='/'></Navigate>}],{basename:"/platform"}
)
export default RouterRender;

2.在package.json中添加"homepage":"."

{"homepage": "."
}

3。安心打包就可以啦