首页 > 解决方案 > NextJS useRouter 在函数体内使用时出错

问题描述

我希望这是一个简单的问题。我不明白它为什么这样做。无论如何,使用 NextJS,我正在尝试使用 useRouter 挂钩访问路由器中的参数,并将其与 querystring 插件组合以拆分 asPath,因为如果使用无状态,NextJS 不允许您访问路由器的查询部分。这是我的代码:

import { useRouter } from 'next/router';
import queryString from "query-string";

const withPageRouter = (router) => {
    router.query = { ...queryString.parse(router.asPath.split(/\?/)[1]) };
    return router;
  };

function getRouterParams(){
  const router = useRouter();
  router = withPageRouter(router);
  return router;
}

export async function getTown() {
const town = await getRouterParams();
return town;
}

现在,当我尝试运行它时,出现此错误:

Server Error

Error: Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:
1. You might have mismatching versions of React and the renderer (such as React DOM)
2. You might be breaking the Rules of Hooks
3. You might have more than one copy of React in the same app
See https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem.
This error happened while generating the page. Any console logs will be displayed in the terminal window.
Source

lib/api.js (34:26) @ getRouterParams

  32 | 
  33 | function getRouterParams(){
> 34 |   const router = useRouter();
     |                          ^
  35 |   router = withPageRouter(router);
  36 |   return router;
  37 | }

但对我来说,它看起来应该没问题;它在函数体中吗?我觉得我错过了一些明显的东西。我很感激帮助。

标签: javascriptreactjsnext.jsnext-router

解决方案


您不能在正常功能中调用 useRouter() 。

您只能在 React 函数组件或自定义钩子的顶部调用 useRouter()

在此处了解有关 Hooks 规则的更多信息:https ://reactjs.org/docs/hooks-rules.html


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