編輯：已解決！請(qǐng)看下文。我希望我的組件在每次瀏覽器請(qǐng)求其 URL 時(shí)Blog觸發(fā)動(dòng)作創(chuàng)建者，無(wú)論是通過(guò)鏈接還是刷新。fetchBlog我想用 React useEffectHook 和 React-ReduxuseDispatch和useSelectorHooks 來(lái)做。但是，我的操作僅在點(diǎn)擊頁(yè)面鏈接時(shí)觸發(fā)；我不明白為什么，即使在閱讀了幾個(gè)解釋（如官方文檔）之后。這是代碼：// Everything duly imported, or else VSC would yell at meexport default function Blog() {  const dispatch = useDispatch();    // slug is set here with useSelector, this always works  useEffect(() => {    dispatch(fetchBlog(slug))  }, [slug, dispatch]);  const blog = useSelector((state) => state.blogs[0]);    // return renders the blog information from the blog constant    // since the action does not fire, blog is undefined because state.blogs is an empty array}我知道，刷新時(shí)fetchBlog不會(huì)因?yàn)?Redux DevTools 而觸發(fā)，也因?yàn)槲以赿ebugger那里放了一個(gè)。（并且后端日志沒(méi)有顯示進(jìn)來(lái)的請(qǐng)求。）動(dòng)作創(chuàng)建者本身和reducer 必須在工作；如果不是，則通過(guò)鏈接訪問(wèn)該頁(yè)面時(shí)將無(wú)法正確加載。編輯：我已經(jīng)確定useSelector并且useDispatch不是問(wèn)題的根本原因，因?yàn)楦囊褂玫拇aconnect并mapStateToProps給出mapDispatchToProps相同的結(jié)果。問(wèn)題似乎與useEffect.