[英]Socket IO with React and Express. ReactJS Error: Could not proxy request /socket.io/?EIO=4… from localhost:3000 to http://127.0.0.1:4000
[英]Proxy error: Could not proxy request /adduser from localhost:3000 to http://127.0.0.1/4000
我收到类似“内部服务器错误”的错误,不知道哪里错了,请尝试解决我的问题,如果您有任何疑问,请随时提问。
package.json
这是我的前端 package.json 文件,我在其中添加了代理以与后端通信。
{
"name": "todo",
"version": "0.1.0",
"private": true,
"proxy": "http://127.0.0.1/4000/",
"dependencies": {
"@testing-library/jest-dom": "^5.11.4",
"@testing-library/react": "^11.1.0",
"@testing-library/user-event": "^12.1.10",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-router-dom": "^6.0.2",
"react-scripts": "4.0.3",
"web-vitals": "^1.0.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
用户.js
这是我写的逻辑部分中的 user.js 文件
const User = require("../model/userdata");
// Get All Users
exports.getAllUser = async (req, res) => {
User.find().exec((err, users) => {
if (err || !users) {
return res.status(400).json({
err: "No Users Found",
});
}
res.json(users);
});
};
// Add a single User
exports.addUser = (req, res) => {
const user = new User(req.body);
user.save((err, user) => {
if (err) {
console.log("ERROR:", err);
return res.status(400).json({
err: "not able to connect",
});
}
res.json({
id: user._id,
name: user.name,
email: user.email,
phone: user.phone,
});
});
};
// Get a Single User
exports.getUserById = (req, res) => {
const id = req.params.id;
User.findById(id, (err, user) => {
if (err) {
return res.status(400).json({
err: "No User Found",
});
}
res.json(user);
console.log(user);
});
};
// Edit User
exports.editUser = (req, res) => {
const id = req.params.id;
User.findByIdAndUpdate(
id,
{
$set: req.body,
},
(err, user) => {
if (err) {
return res.status(400).json({
err: "User Updation Failed",
});
}
res.json("User Updated Successfully");
}
);
};
exports.deleteUser = (req, res) => {
let id = req.params.id;
User.findByIdAndRemove(id, (err, user) => {
if (err) {
return res.status(400).json({
err: "Not able to deleted",
});
}
res.json("User Deleted Succefully..");
});
};
用户.js
这是用户的路线
const express = require("express");
const {
getAllUser,
addUser,
getUserById,
deleteUser,
editUser,
} = require("../controller/user");
const route = express.Router();
route.get("/", getAllUser);
route.post("/adduser", addUser);
route.get("/:id", getUserById);
route.delete("/:id", deleteUser);
route.put("/:id", editUser);
module.exports = route;
就像错误消息所暗示的那样, 500 Internal Server Error
您的服务器端有问题。 你应该在那里进行调试。 这个问题与 React 无关。
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