How to load Spring applicationContext into Jersey Application - spring

Question

I'm creating a Jersey JAX-RS web service with the following:
package com.mycompany.rest.config;
import java.util.Set;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
#ApplicationPath("")
public class ApplicationConfig extends Application {
#Override
public Set<Class<?>> getClasses() {
return getRestResourceClasses();
}
private Set<Class<?>> getRestResourceClasses() {
Set<Class<?>> resources = new java.util.HashSet<Class<?>>();
resources.add(com.mycompany.rest.controllers.UserController.class);
return resources;
}
}
However, when I try and integrate a spring applicationContext such as the following :
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.mycompany.rest.user"/>
<bean id="userService" class="com.mycompany.rest.user.UserServiceImpl" />
</beans>
I get null pointers from my controller class for the userService being loaded by the bean pasted above. I'm assuming this is because the application context is not being loaded into the Jersey application.
Is there a way of doing this?

Answer 1

If you want to inject Spring beans into your Jersey resource classes, you need to add jersey-spring3 dependency to your class path. see https://jersey.java.net/documentation/latest/spring.html
An hello-world example can be found at https://github.com/jersey/jersey/tree/2.19/examples/helloworld-spring-webapp

Answer 2

I had the same problem, and i fixed it by adding #autowired to my service, and extending SpringBeanAutowiringSupport like the following :
#Path("/mails")
public class MailController extends SpringBeanAutowiringSupport{
#Autowired
private MailService mailService;
#GET
#Path("/{code}")
#Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
public String getMails(#PathParam("code") String code) throws Exception {
//function logic
}
Note that this is working without integrating jersey-springx.jar
And I'm using Spring 3 along with jersey-bundle-1.19.1.jar