我已经调查了这个问题3天了,但是还无法解决。
完整的错误信息如下:
C:\Users\XXXXXX\WebstormProjects\XXXX\server\routes\auth.jsx:58
return res.send(ReactDOMServer.renderToString(<LoginPage />));
^
SyntaxError: Unexpected token <
at createScript (vm.js:56:10)
at Object.runInThisContext (vm.js:97:10)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (C:\Users\XXXXXX\WebstormProjects\XXXX\index.js:10:20)
这是我的webpack.config.js文件:
const path = require('path');
module.exports = {
entry: path.join(__dirname, '/client/src/app.jsx'),
output: {
path: path.join(__dirname, '/client/dist/js'),
filename: 'app.js',
publicPath: "/"
},
module: {
loaders: [{
test: /\.jsx?$/,
include: [
path.join(__dirname, '/client/src'),
path.join(__dirname, '/server/routes')
],
loader: 'babel-loader',
query: {
babelrc: false,
presets: ['es2015', 'stage-2', 'react']
}
}],
},
devServer: {
historyApiFallback: true
},
watch: true
};
现在是/server/routes/auth.jsx文件:
const express = require('express');
const validator = require('validator');
const router = new express.Router();
const React = require('react');
const ReactDOMServer = require('react-dom/server');
const LoginPage = require('../../client/src/containers/LoginPage.jsx');
function validateLoginForm(payload) {
const errors = {};
let isFormValid = true;
let message = '';
if (!payload || typeof payload.email !== 'string' || payload.email.trim().length === 0) {
isFormValid = false;
errors.email = 'Please provide your email address.';
}
if (!payload || typeof payload.password !== 'string' || payload.password.trim().length === 0) {
isFormValid = false;
errors.password = 'Please provide your password.';
}
if (!payload || typeof payload.password !== 'string' || payload.password.trim().length <= 8)
{
isFormValid = false;
errors.password = 'Please provide a password that\'s more than 8 char';
}
if (!isFormValid) {
message = 'Check the form for errors.';
}
return {
success: isFormValid,
message,
errors
};
}
router.post('/login', (req, res) => {
console.log("lol");
const validationResult = validateLoginForm(req.body);
if (!validationResult.success) {
return res.status(400).json({
success: false,
message: validationResult.message,
errors: validationResult.errors
});
}
console.log("Went through validationResult without problems");
return res.status(200).end();
});
router.get('/login', (req, res) => {
console.log(req.url);
return res.send(ReactDOMServer.renderToString(<LoginPage />)); // THE PROBLEM
});
router.get('/', (req, res) => {
console.log(req.url);
console.log("lmao")
});
module.exports = router;
最终的 /client/src/containers/LoginPage.jsx :
import React from 'react';
import LoginForm from '../components/LoginForm.jsx';
class LoginPage extends React.Component{
/**
* Class constructor.
*/
constructor(props) {
super(props);
// set the initial component state
this.state = {
errors: {},
user: {
email: '',
password: ''
}
};
this.processForm = this.processForm.bind(this);
this.changeUser = this.changeUser.bind(this);
}
/**
* Process the form.
*
* @param {object} event - the JavaScript event object
*/
processForm(event) {
// prevent default action. in this case, action is the form submission event
event.preventDefault();
const email = encodeURIComponent(this.state.user.email);
const password = encodeURIComponent(this.state.user.password);
const formData = `email=${email}&password=${password}`;
// create an AJAX request
const xhr = new XMLHttpRequest();
xhr.open('post', '/login');
xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
xhr.responseType = 'json';
xhr.addEventListener('load', () => {
if (xhr.status === 200) {
// success
// change the component-container state
this.setState({
errors: {}
});
console.log('The form is valid');
} else {
// failure
// change the component state
const errors = xhr.response.errors ? xhr.response.errors : {};
errors.summary = xhr.response.message;
this.setState({
errors
});
}
});
xhr.send(formData);
}
/**
* Change the user object.
*
* @param {object} event - the JavaScript event object
*/
changeUser(event) {
const field = event.target.name;
const user = this.state.user;
user[field] = event.target.value;
this.setState({
user
});
}
/**
* Render the component.
*/
render() {
return (
<LoginForm
onSubmit={this.processForm}
onChange={this.changeUser}
errors={this.state.errors}
user={this.state.user}
/>
);
}
}
export default LoginPage;
我首先添加了path.join(__dirname, '/server/routes')
,以告诉Webpack和Babel还要搜索这个文件夹以转译JSX,但不管怎样都失败了。
然后我将auth.jsx中的 return res.send(ReactDOMServer.renderToString(<LoginPage />));
替换为:
var html = ReactDOMServer.renderToString(React.createElement(LoginPage));
return res.send(ReactDOMServer.renderToString('base', html));
但是,这样做会导致 Node 报错,错误信息如下:
C:\Users\XXXXXX\WebstormProjects\XXXX\client\src\containers\LoginPage.jsx:1
(function (exports, require, module, __filename, __dirname) { import React from 'react';
^^^^^^
SyntaxError: Unexpected token import
at createScript (vm.js:56:10)
at Object.runInThisContext (vm.js:97:10)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (C:\Users\XXXXXX\WebstormProjects\XXXX\server\routes\auth.jsx:8:19)
再次强调,这是一个转码的问题。
请注意,在auth.jsx中没有这条路由,Web应用程序可以正常工作,但我无法通过URL访问/login。
我做错了什么?
我正在使用最新版本的Express、React、React Router和Node。我的操作系统是Windows 7。
提前致谢。
webpack.config.js
,不是package.json
,对吗? - atomrc