How do you integrate a Java backend with a frontend built using Angular or React?

I-Hub Talent: The Best Full Stack Java Institute in Hyderabad

Looking for the best Full Stack Java institute in Hyderabad? I-Hub Talent is your go-to destination for expert-led training in Java, Spring Boot, Hibernate, Microservices, Frontend, and Backend Development. With an industry-focused curriculum and real-world projects, I-Hub Talent ensures students gain hands-on experience in Java programming, Angular, React, RESTful APIs, MySQL, NoSQL, and Cloud Deployment.

Our Full Stack Java course is designed for beginners and professionals, covering essential concepts like OOPs, Data Structures, Web Development, and Enterprise Application Development. At I-Hub Talent, you will receive personalized mentorship, interview preparation, and 100% placement assistance to kickstart your IT career.

Join I-Hub Talent’s Full Stack Java course in Hyderabad and build a strong foundation in Java-based technologies with top trainers. Take your career to new heights with practical learning, real-time projects, and career guidance.

Integrating a Java backend with a frontend built using Angular or React involves creating a seamless connection between the two layers via RESTful APIs. Here’s how to approach it:

  1. Expose REST APIs in Java (Backend):
    Use frameworks like Spring Boot to build RESTful web services. Annotate controller classes with @RestController and expose endpoints using @GetMapping, @PostMapping, etc.

  2. Enable Cross-Origin Requests (CORS):
    Configure CORS in Spring Boot to allow the frontend to access the backend (especially during development)

  3. Connect from Angular/React (Frontend):
    Use HttpClient (Angular) or fetch/axios (React) to call backend APIs.

  4. Data Format:
    Communication typically uses JSON. Ensure your backend uses Jackson or Gson for JSON serialization.

  5. Deployment:
    Serve the frontend (Angular/React build output) using a web server or configure Spring Boot to serve static files. Alternatively, host them separately and use a reverse proxy like Nginx.This architecture supports decoupled development, enabling frontend and backend teams to work independently while maintaining a robust, scalable system.

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