Detailed explanation of the configuration steps for using Auth0 in React project and integrating into back-end services

The configuration steps for using Auth0 in a React project and integrating into a backend service are as follows:

1. Create an application in Auth0

Log in to Auth0 Dashboard.
Navigate to the Applications section and click Create Application.
Name your application and select the application type "Single Page Web Applications".
Click “Create”.

2. Configure Auth0 application

1. On the application settings page, set the following fields:

Allowed Callback URLs: http://localhost:3000/callback (local address of the development environment)
Allowed Logout URLs: http://localhost:3000 (local address of the development environment)
Allowed Web Origins: http://localhost:3000 (local address of the development environment)

2. Save the changes.

3. Install Auth0 SDK in React project

In the React project root directory, open the terminal and run:

npm install @auth0/auth0-react

4. Configure Auth0 in React project

Create a name calledauth_config.jsonfile containing the following content:

{
  "domain": "YOUR_AUTH0_DOMAIN",
  "clientId": "YOUR_AUTH0_CLIENT_ID",
  "audience": "YOUR_API_IDENTIFIER"
}

existsrcCreate a directory calledFile:

import React from "react";
import { useNavigate } from "react-router-dom";
import { Auth0Provider } from "@auth0/auth0-react";
import config from "./auth_config.json";
const Auth0ProviderWithHistory = ({ children }) => {
  const navigate = useNavigate();
  const onRedirectCallback = (appState) => {
    navigate(appState?.returnTo || );
  };
  return (
    <Auth0Provider
      domain={}
      clientId={}
      audience={}
      redirectUri={}
      onRedirectCallback={onRedirectCallback}
    >
      {children}
    </Auth0Provider>
  );
};
export default Auth0ProviderWithHistory;

existsrc/Use in the fileAuth0ProviderWithHistoryPackage Application:

import React from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter } from 'react-router-dom';
import Auth0ProviderWithHistory from './auth0-provider-with-history';
import App from './App';
(
  <BrowserRouter>
    <Auth0ProviderWithHistory>
      <App />
    </Auth0ProviderWithHistory>
  </BrowserRouter>,
  ('root')
);

5. Use Auth0 in React component

useuseAuth0Hook access Auth0 authentication status:

import React from "react";
import { useAuth0 } from "@auth0/auth0-react";
const Profile = () => {
  const { user, isAuthenticated, isLoading } = useAuth0();
  if (isLoading) {
    return <div>Loading...</div>;
  }
  return (
    isAuthenticated && (
      <div>
        <img src={} alt={} />
        <h2>{}</h2>
        <p>{}</p>
      </div>
    )
  );
};
export default Profile;

Create login and logout buttons:

import React from "react";
import { useAuth0 } from "@auth0/auth0-react";
const LoginButton = () => {
  const { loginWithRedirect } = useAuth0();
  return <button onClick={() => loginWithRedirect()}>Log In</button>;
};
const LogoutButton = () => {
  const { logout } = useAuth0();
  return <button onClick={() => logout({ returnTo:  })}>Log Out</button>;
};
export { LoginButton, LogoutButton };

6. Integrate into back-end services

Verify the JWT token in the backend service. Take Go as an example, use/auth0/go-jwt-middlewareand/form3tech-oss/jwt-go：

package main
import (
  "net/http"
  "/auth0/go-jwt-middleware"
  "/dgrijalva/jwt-go"
  "/gorilla/mux"
)
var myJwtMiddleware = ({
  ValidationKeyGetter: func(token *) (interface{}, error) {
    audience := "YOUR_API_IDENTIFIER"
    checkAud := .().VerifyAudience(audience, false)
    if !checkAud {
      return token, ("invalid audience")
    }
    iss := "https://YOUR_AUTH0_DOMAIN/"
    checkIss := .().VerifyIssuer(iss, false)
    if !checkIss {
      return token, ("invalid issuer")
    }
    cert, err := getPemCert(token)
    if err != nil {
      return nil, err
    }
    return ([]byte(cert))
  },
  SigningMethod: jwt.SigningMethodRS256,
})
func main() {
  r := ()
  ("/api/private", ((func(w , r *) {
    ([]byte("This is a private endpoint"))
  })))
  (":8080", r)
}
func getPemCert(token *) (string, error) {
  // Implementation to get the PEM certificate
}

In a React project, usegetAccessTokenSilentlyMethods to obtain access token and add it to the API requestedAuthorizationhead:

import React from "react";
import { useAuth0 } from "@auth0/auth0-react";
import axios from "axios";
const CallApi = () => {
  const { getAccessTokenSilently } = useAuth0();
  const callApi = async () => {
    try {
      const token = await getAccessTokenSilently();
      const response = await ("http://localhost:8080/api/private", {
        headers: {
          Authorization: `Bearer ${token}`,
        },
      });
      ();
    } catch (error) {
      (error);
    }
  };
  return <button onClick={callApi}>Call API</button>;
};
export default CallApi;

Through the above steps, you can integrate Auth0 into your React project and interact with your backend services.

This is the article about the configuration steps for using Auth0 in a React project and integrating it into a backend service. For more related React content, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!