react router 路由守卫

import ｛Route，Redirect｝from “react-router-dom”
const PrivateRoute = ({component:Component, ...rest}) =>(
  <Route
    {...rest}
    render={props=>{
       return isLogin ?
       <Component {...props}>
       :
       <Redirect
         to={{
            pathname:'/login',
            state:{redirect:props.location.pathname}
          }}
       >
    }}
  />
)