【发布时间】：2021-02-28 09:04:25
【问题描述】：
我有一个 React 应用程序，在这个应用程序中有一个名为 backend 的文件夹。此文件夹包含 2 个文件：
Config 通过 nodemailer 包含一个带有电子邮件和密码的变量。 Index.js（这是我的服务器应该运行的）有这个：
const path = require("path");
const express = require("express");
const transporter = require("./config");
const dotenv = require("dotenv");
dotenv.config();
const app = express();
const buildPath = path.join(__dirname, "..", "build");
app.use(express.json());
app.use(express.static(buildPath));
app.post("/send", (req, res) => {
try {
const mailOptions = {
from: req.body.email, // sender address
to: process.env.email, // list of receivers
subject: req.body.subject, // Subject line
html: `
<p>You have a new contact request.</p>
<h3>Contact Details</h3>
<ul>
<li>Name: ${req.body.name}</li>
<li>Email: ${req.body.email}</li>
<li>Subject: ${req.body.subject}</li>
<li>Message: ${req.body.message}</li>
</ul>
`,
};
transporter.sendMail(mailOptions, function (err, info) {
if (err) {
res.status(500).send({
success: false,
message: "Something went wrong. Try again later",
});
} else {
res.send({
success: true,
message: "Thanks for contacting us. We will get back to you shortly",
});
}
});
} catch (error) {
res.status(500).send({
success: false,
message: "Something went wrong. Try again later",
});
}
});
app.listen(3030, () => {
console.log("server start on port 3030");
});
然后，在不同的文件夹（组件）中，我有一个获取表单信息的组件文件，它应该将它带到服务器：
import React, { useState } from "react";
import axios from "axios";
import { Form, Button } from "react-bootstrap";
import Navbar from "../components/Navbar";
import BottomNav from "../components/BottomNav";
const Contact = () => {
const [state, setState] = useState({
name: "",
email: "",
subject: "",
message: "",
});
const [result, setResult] = useState(null);
const sendEmail = event => {
event.preventDefault();
axios
.post("/send", { ...state })
.then(response => {
setResult(response.data);
setState({
name: "",
email: "",
subject: "",
message: "",
});
})
.catch(() => {
setResult({
success: false,
message: "Something went wrong. Try again later",
});
});
};
const onInputChange = event => {
const { name, value } = event.target;
setState({
...state,
[name]: value,
});
};
return (
<div>
<Navbar />
{result && (
<p className={`${result.success ? "success" : "error"}`}>
{result.message}
</p>
)}
<form
className="phs-form-wrapper mt-8 h-screen flex flex-col items-center "
onSubmit={sendEmail}
>
<Form.Group
className=" phs-form-group flex flex-col items-center"
controlId="name"
>
<Form.Label className="phs-form-label mr-2">Full Name</Form.Label>
<Form.Control
type="text"
name="name"
value={state.name}
onChange={onInputChange}
/>
</Form.Group>
<Form.Group
className=" phs-form-group flex flex-col items-center"
controlId="email"
>
<Form.Label className="phs-form-label mr-2">Email</Form.Label>
<Form.Control
type="text"
name="email"
value={state.email}
onChange={onInputChange}
/>
</Form.Group>
<Form.Group
className=" phs-form-group flex flex-col items-center"
controlId="subject"
>
<Form.Label className="phs-form-label mr-2">Subject</Form.Label>
<Form.Control
type="text"
name="subject"
value={state.subject}
onChange={onInputChange}
/>
</Form.Group>
<Form.Group
className=" phs-form-group flex flex-col items-center"
controlId="subject"
>
<Form.Label className="phs-form-label mr-2">Message</Form.Label>
<Form.Control
as="textarea"
name="message"
value={state.message}
rows="3"
onChange={onInputChange}
/>
</Form.Group>
<Button
className="phs-form-submit-button bg-black text-white p-4 mt-4"
variant="primary"
type="submit"
>
Submit
</Button>
</form>
<BottomNav />
</div>
);
};
export default Contact;
我在两台服务器上都收到错误消息。 在 localhost:3000 上，每当我尝试提交我得到的信息时，我都会在其中运行我的 react 应用程序：
VM635:1 POST http://localhost:3000/send 404 (Not Found)
在本地主机上：3030：
GET http://localhost:3030/ 404 (Not Found)
localhost/:1 Refused to load the image 'http://localhost:3030/favicon.ico' because it violates the following Content Security Policy directive: "default-src 'none'". Note that 'img-src' was not explicitly set, so 'default-src' is used as a fallback.
我注意到我的 axios 有一个 .post("/send") 但我尝试将其更改为 localhost:3030/send 并且也不起作用。
另外，我有 2 个 package.json 文件，一个在我的 react 文件夹 (web) 中，另一个在我的后端文件夹中。
后端有一个这样的脚本：
"scripts": {
"dev": "nodemon src/index.js"
}
网页版有不同的脚本，所以我运行不同的服务器：
"scripts": {
"start": "npm run watch:css && react-scripts start",
"build": "npm run watch:css && react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject",
"watch:css": "postcss src/assets/tailwind.css -o src/assets/main.css"
}
有什么想法吗？
【问题讨论】：
标签： node.js reactjs server nodemailer nodemon