Kesha Williams explains how to extract parameters from the request.
- [Instructor] Let's learn how to extract…information from the request.…The following types of parameters can be…extracted for use in the Resource class.…Query parameters, URI path parameters,…form elements, cookies, headers, and a matrix.…Let's discuss the URI path parameter in more detail,…and then see it in action.…URI path parameters indicated by the @PathParam annotation…are extracted from the URI of the request,…and essentially injects the value…of the parameter into the method.…
Here's a tip.…You can inject multiple parameters into a Java method…using a format similar to what's below.…Simply list each path parameter…separated by a forward slash.…I've opened IntelliJ and navigated…to the ApplicationResource.java file.…On line 33, the getApplication resource method…demonstrates returning an application.…For now, we have the data hard-coded,…but that will soon change.…
If you notice here on line 32,…we are using the @Path annotation at the method level.…The @Path annotation on this resource method…marks it as a subresource.…
Author
Released
1/18/2019- Comparing when to use JAX-WS vs. JAX-RS
- Using JAX-RS annotations
- Accessing REST resources with JAX-RS
- Creating JAX-WS endpoints
- Writing RESTful services using JAX-RS
- Reading, writing, updating, and deleting data via endpoints
- Mapping to entities
- Error handling
- Testing web services
- Securing Java EE web services
Skill Level Intermediate
Duration
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Introduction
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1. Understanding Web Services
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Web services overview4m 20s
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Why use Java EE?1m 53s
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Decide which service to use1m 27s
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2. Building RESTful Web Services with JAX-RS
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Understand REST services3m 6s
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Use JAX-RS annotations4m 31s
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Map to entities3m 42s
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Extract request parameters3m 13s
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Use HTTP GET4m 20s
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Use HTTP POST2m 39s
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Use HTTP PUT2m 8s
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Use HTTP DELETE2m 5s
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3. Accessing REST Resources with the JAX-RS Client API
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Use the JAX-RS Client API4m 28s
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Use advanced features2m 7s
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4. Building SOAP Web Services with JAX-WS
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Understand SOAP services1m 29s
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Create a JAX-WS endpoint4m 55s
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Create data via an endpoint2m 24s
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Map to entities with JAXB3m 50s
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5. Searching, Error Handling, and Testing in Web Services
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Search in web services4m 56s
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Incorporate error handling3m 45s
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Test web services2m 45s
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6. Documentation, Logging, and Tracing
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Document web services1m 36s
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Secure web services4m 48s
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Conclusion
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Next steps1m 51s
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Video: Extract request parameters