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Send Multiple Headers with Spring WebClient
- In modern microservices and cloud-native applications, sending metadata with HTTP requests is a common need.
- Spring WebClient is important for setting headers properly, allowing for multiple headers in a single request and defining default headers globally.
- HTTP headers include Content-Type, Authorization, Accept, and custom values like X-Custom-* for various purposes.
- A sample code snippet creates a test endpoint in Spring that logs received headers alongside book information.
- Using WebClient in Spring involves configuring it either by autowiring a WebClient.Builder or by defining a reusable bean.
- Setting multiple headers in WebClient for a specific request can be done using .header() or .headers(Consumer
). - Default headers can be set globally in WebClient to ensure consistency across requests.
- Request-specific headers take precedence over global headers if both are set for the same key.
- Practical use of Java Spring WebClient for sending multiple HTTP headers is crucial in microservice architectures.
- Configuring headers globally, customizing per request, and verifying through a sample controller are demonstrated in the article.
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