Скачать или смотреть How to Pass Query Parameters in URL in Java Spring Boot

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Summary: Learn how to effectively pass query parameters in URL using Java Spring Boot, ensuring seamless communication between client and server in your web applications.
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When developing web applications with Java Spring Boot, passing query parameters in URLs is a common requirement for retrieving specific data or triggering certain actions. Fortunately, Spring Boot provides convenient ways to handle query parameters effortlessly. Here's how you can do it:

Using @RequestParam Annotation

One of the simplest ways to handle query parameters in Spring Boot is by using the @RequestParam annotation in your controller methods. Here's a basic example:

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In this example, the param query parameter is accessed using the @RequestParam annotation. You can specify the parameter name within the annotation, and Spring Boot will automatically bind the value to the corresponding method parameter.

Multiple Query Parameters

You can also handle multiple query parameters by adding multiple @RequestParam annotations:

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Optional Query Parameters

If a query parameter is optional, you can specify a default value for the corresponding method parameter:

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Using HttpServletRequest

Alternatively, you can access query parameters directly from the HttpServletRequest object:

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Conclusion

In Java Spring Boot, passing query parameters in URLs is straightforward and can be done using annotations like @RequestParam. Whether handling single or multiple parameters, required or optional, Spring Boot provides flexible solutions to suit your application's needs, ensuring seamless communication between client and server.