JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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JAX-RS @Path annotation with regular expression match example


This page gives you an example using JAX-RS @Path annotation, how to bind a URI pattern to your java method using regular expression match.

In the previous examples we have given details of application setup, dependencies, web.xml file configurations: If you want to know about these configuration, please refer these:

Restful web services using RESTEasy hello world example.
Restful web services using Jersey hello world example.

Look at the below class to apply @Path annotation with regular expression to your method:

package com.java2novice.restful;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;

@Path("/employee")
public class EmployeeService {

	@GET
	@Path("{empId: [0-9]+}")
	public Response getEmployeeById(@PathParam("empId") String empId){
		
		return Response.status(200).entity("Got employee with id : " + empId).build();
	}
	
	@GET
	@Path("/name/{empName: [a-zA-Z\\s]+}")
	public Response getEmployeeByName(@PathParam("empName") String name){
		
		return Response.status(200).entity("Got employee with name : " + name).build();
	}
}

In the above example, if you use "/employee/123" URI pattern, getEmployeeById() method will be invoked, and you will get "Got employee with id : 123" as a response.

If you use "/employee/name/javanovice" URI pattern, then getEmployeeByName() method will be invoked and you will get "Got employee with name : javanovice" as a response.

In the next page you will see an example on how to use @PathParam annotation.

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Restful Web Services Examples

  1. Restful web services using RESTEasy hello world example.
  2. Restful web services using Jersey hello world example.
  3. JAX-RS @Path annotation example
  4. JAX-RS @Path annotation with regular expression match example
  5. JAX-RS @PathParam annotation example
  6. JAX-RS @QueryParam and @DefaultValue annotations example
  7. JAX-RS @MatrixParam annotation example
  8. How to read multiple values of a query paramter in JAX-RS restful web services?
  9. How to pass header parameters as method inputs in JAX-RS restful web services?
  10. How to read header parameters in JAX-RS restful web services?
  11. JAX-RS @FormParam annotation example
  12. How to upload file using Jersey restful web services?
  13. How to download file using java restful web services?
  14. XML based Restful web service with RESTEasy and JAXB.
  15. XML based Restful web service with Jersey and JAXB.
  16. Json based Restful web service with RESTEasy, Jettison and JAXB
  17. Json based Restful web service with RESTEasy and Jackson
  18. Json based Restful web service with Jersey and Jackson
  19. How to input json request with Jersey and Jackson?
  20. Java client for restful web service using java.net package
  21. Java client for restful web service using Jersey API
  22. Java restful webservices with HTTP basic authentication.
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What is wrapper class?
Everything in java is an object, except primitives. Primitives are int, short, long, boolean, etc. Since they are not objects, they cannot return as objects, and collection of objects. To support this, java provides wrapper classes to move primitives to objects. Some of the wrapper classes are Integer, Long, Boolean, etc.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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