我在同一台本地计算机上的端口 3000 和快速服务器的端口 4000 上运行我的反应应用程序。
在我的反应应用程序中,我使用 fetch api 将我的注册表单数据发送到我的快递服务器'/register' 路由-
const response = await fetch('/register' , {
method: 'POST',
headers : {
"Content-Type" : "application/json"
},
body: JSON.stringify({
name: username,
email : useremail,
phone : userphone,
work : userwork,
password: userpassword,
cpassword : usercpassword
})
});
const data = await response.json();
if(data.status === 422 || !data){
window.alert("Invalid registration");
console.log("Invalid registration");
}else{
window.alert("registration successful");
console.log("registration successful");
//using useHistory hook
history.push('/login');
}
}
在我的快递服务器中,我在“/注册”路线上做一个发布方法并将表单数据存储在我的数据库中 -
router.post('/register' , (req,res)=>{
const {name, email, phone, work, password, cpassword} = req.body;
//we are checking if any of the inputs are empty or not
if(!name || !email || !phone || !work || !password || !cpassword){
return res.status(422).send('Please Fill All The Fields');
}
//we are observing if a user already registered or not by checking it's email
User.findOne({email : email})
.then((userExist) =>{
if(userExist){
return res.status(422).send('Email already exists');
}else if(password !== cpassword){
return res.status(422).send('Passwords are not matching');
}
//if the email dont exist , that means the user is new and we will store it's data in the DB
const user = new User({
name : name,
email : email,
phone : phone,
work : work,
password : password,
cpassword : cpassword,
});
//saved the stored data in the DB
user.save()
.then(()=>{
res.status(201).send('User registered Successfully')
})
.catch((err)=>{
res.status(500).send(err);
})
}).catch((err)=>{
console.log(err);
})
})
在我的 react 应用程序的 package.json 文件中,我将代理添加到 localhost:4000(在端口 4000 定义的快速服务器) -
{
"name": "frontend",
"version": "0.1.0",
"private": true,
"proxy" : "http://localhost:4000",
"dependencies": {
"@testing-library/jest-dom": "^5.11.10",
"@testing-library/react": "^11.2.6",
"@testing-library/user-event": "^12.8.3",
"bootstrap": "^5.0.0-beta3",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-router-dom": "^5.2.0",
"react-scripts": "4.0.3",
"web-vitals": "^1.1.1"
},
"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"
]
}
}
在我的 Firefox 控制台中,我面临这个错误 -
在网络选项卡下的浏览器中,我得到了这个-
我面临 422 状态错误。过去 5 小时我一直在尝试解决这个问题,但是在阅读了许多解决方案和文章后,我无法解决我的这个问题。我还在 stackoverflow 上检查了类似的问题,但解决方案他们没有工作。基本上,我试图通过在 package.json 文件(react 应用程序)中定义一个代理将我的注册表单数据从我的反应应用程序发送到我的快递服务器,但我不知道为什么反应仍然认为它是自己的端口 3000 而不是服务器端口 4000。请帮我解决这个问题。非常感谢。