Spring Boot WebClient Masterclass | API Calls, Headers & Error Handling
Spring Boot WebClient Masterclass | API Calls, Headers & Error Handling
Welcome to BackendVerse! 🌿
In this video, we’ve implemented Spring Boot WebClient — a modern and reactive HTTP client for making REST API calls in Spring Boot applications. 🚀
You’ll learn how to configure, customize, and handle real-world API communication with robust error handling and clean code practices.
🧠 What You’ll Learn in This Video
📌 Configure WebClient Bean in Spring Boot
📌 Perform GET and POST API Calls with ease
📌 Add and manage Custom Headers dynamically
📌 Handle Multiple Status Codes using onStatus() & onRawStatus()
📌 Implement a powerful Fallback Error Handler for resilience
🎯 Why Watch This Video?
✔️ Master WebClient — the modern alternative to RestTemplate
✔️ Learn advanced error handling for multiple status codes
✔️ Improve your API integration reliability and maintainability
✔️ Write clean, production-grade HTTP clients for microservices
🧩 Tech Stack
Java 21
Spring Boot 3
Gradle
Intellij
Webclient
Time Stamps:
00:00 – Introduction to Project
00:13 – Video Overview & Agenda Breakdown
01:55 – Understanding Project Packages in Spring Boot
02:58 – Creating WebClient Bean in Spring Boot
04:08 – Implementing Create User API with WebClient (POST Method)
06:59 – Implementing Get User API with WebClient (GET Method)
08:34 – Testing Create and Get User APIs in Postman
09:47 – Adding Custom and Per-API Headers in WebClient
13:05 – Implementing Robust Error Handling for Multiple Status Codes
17:21 – Testing Error Handling for Different Status Codes
19:27 – Setting up Fallback Error Handler in Spring Boot (onErrorResume)
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🔗 GitHub Code
👉 https://github.com/backendverse/sprin...
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