小编Wal*_*man的帖子

“解析错误：缺少分号”。

语法错误：client\src\App.js：缺少分号 (15:21)

此错误显示在 componentDidMount() 行上。

完整的代码如下。

import React, { Component } from "react";
import AppNavBar from "./components/AppNavbar";
import ShoppingList from "./components/ShoppingList";
import ItemModal from "./components/ItemModal";
import { Container } from "reactstrap";

import { Provider } from "react-redux";
import store from "./store";
import { loadUser } from "./actions/authActions";

import "bootstrap/dist/css/bootstrap.min.css";
import "./App.css";

function App() {
  componentDidMount() {
    store.dispatch(loadUser());
  }
  return (
    <Provider store={store}>
      <div className="App">
        <AppNavBar />
        <Container>
          <ItemModal />
          <ShoppingList />
        </Container>
      </div>
    </Provider>
  );
}

export default …

类型错误：res.status 不是 auth 处的函数（D:\PROJECT\Web Application\Learning React\MERN STACK\middleware\auth.js:17:9）。我收到这个错误。代码如下。

const config = require("config");
const jwt = require("jsonwebtoken");

function auth(res, req, next) {
  const token = req.header("x-auth-token");

  // Check for token
  if (!token) res.status(401).json({ msg: "No token, authorization denied" });

  try {
    // verify token
    const decoded = jwt.verify(token, config.get("jwtSecret"));
    // Add user from payload
    req.user = decoded;
    next();
  } catch (e) {
    res.status(400).json({ msg: "Token is not valid" });
  }
}

module.exports = auth;

错误截图