As a senior Java backend engineer experienced in Spring Boot and MySQL, you already understand the importance of building real-world applications. Now, let's apply that knowledge to build a payment application using RESTful APIs.
The goal of the payment application is to demonstrate how to integrate third-party payment services into your application. This is a common requirement in many e-commerce or online marketplace platforms.
Here's a basic structure of the payment application:
- Frontend: Create a React component that fetches and displays transactions from the RESTful API. Here's an example:
JAVASCRIPT
1import React, { useState, useEffect } from 'react';
2import axios from 'axios';
3
4const PaymentApp = () => {
5 const [transactions, setTransactions] = useState([]);
6 const [loading, setLoading] = useState(true);
7
8 useEffect(() => {
9 // Fetch transactions from the RESTful API
10 axios.get('/api/transactions')
11 .then(response => {
12 setTransactions(response.data);
13 setLoading(false);
14 })
15 .catch(error => {
16 console.error('Error fetching transactions:', error);
17 setLoading(false);
18 });
19 }, []);
20
21 return (
22 <div>
23 {loading ? (
24 <p>Loading...</p>
25 ) : (
26 <ul>
27 {transactions.map(transaction => (
28 <li key={transaction.id}>{transaction.description} - ${transaction.amount}</li>
29 ))}
30 </ul>
31 )}
32 </div>
33 );
34};
35
36export default PaymentApp;xxxxxxxxxx37
export default PaymentApp;// Import the necessary librariesimport React, { useState, useEffect } from 'react';import axios from 'axios';const PaymentApp = () => { const [transactions, setTransactions] = useState([]); const [loading, setLoading] = useState(true); useEffect(() => { // Fetch transactions from the RESTful API axios.get('/api/transactions') .then(response => { setTransactions(response.data); setLoading(false); }) .catch(error => { console.error('Error fetching transactions:', error); setLoading(false); }); }, []); return ( <div> {loading ? ( <p>Loading</p> ) : ( <ul> {transactions.map(transaction => ( <li key={transaction.id}>{transaction.description} - ${transaction.amount}</li>OUTPUT
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