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JAX-RS : Services Configuration

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Table of Contents

Configuring JAX-RS services programmatically

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Code Block

	xml
	xml

<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:jaxws="http://cxf.apache.org/blueprint/jaxws"
           xmlns:jaxrs="http://cxf.apache.org/blueprint/jaxrs"
           xmlns:cxf="http://cxf.apache.org/blueprint/core"
           xsi:schemaLocation="
             http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
             http://cxf.apache.org/blueprint/jaxrs http://cxf.apache.org/schemas/blueprint/jaxrs.xsd
             http://cxf.apache.org/blueprint/core http://cxf.apache.org/schemas/blueprint/core.xsd
             ">

    <cxf:bus>
        <cxf:features>
            <cxf:logging/>
        </cxf:features>
    </cxf:bus>

     <jaxrs:server id="customerService" address="/customers">
        <jaxrs:serviceBeans>
           <ref component-id="serviceBean" />
        </jaxrs:serviceBeans>
     </jaxrs:server>

     <bean id="serviceBean" class="service.CustomerService"/>
</blueprint>

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Code Block

	xml
	xml

<beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xmlns:jaxrs="http://cxf.apache.org/jaxrs"
      xsi:schemaLocation="
         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
         http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">

     <import resource="classpath:META-INF/cxf/cxf.xml" />
     <import resource="classpath:META-INF/cxf/osgi/cxf-extension-osgi.xml" />

     <jaxrs:server id="customerService" address="/customers">
        <jaxrs:serviceBeans>
           <ref bean="serviceBean"/>
        </jaxrs:serviceBeans>
     </jaxrs:server>
      
     <bean id="serviceBean" class="service.CustomerService"/> 
</beans>

Spring Boot

Example:

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language	java

import org.apache.cxf.Bus;
import org.apache.cxf.jaxrs.JAXRSServerFactoryBean;
import org.apache.cxf.transport.servlet.CXFServlet;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.embedded.EmbeddedServletContainerFactory;
import org.springframework.boot.context.embedded.ServletRegistrationBean;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;

@Configuration
@EnableAutoConfiguration
@ImportResource({ "classpath:META-INF/cxf/cxf.xml" })
public class Application extends SpringBootServletInitializer {

    @Autowired
    private ApplicationContext applicationContext;

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    // Replaces the need for web.xml
    @Bean
    public ServletRegistrationBean servletRegistrationBean(ApplicationContext context) {
        return new ServletRegistrationBean(new CXFServlet(), "/api/*");
    }

    @Bean
    public Server helloRestService() {
        Bus bus = (Bus) applicationContext.getBean(Bus.DEFAULT_BUS_ID);
        Object implementor = new HelloWorldRestImpl();
        JAXRSServerFactoryBean endpoint = new EndpointImpl(bus, implementor);
        endpoint.setDdddress("/hello");
        return endpoint.create();
    }

    // Used when deploying to a standalone servlet container, i.e. tomcat
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }

}

Please also check the classes in this package.

Configuring JAX-RS endpoints programmatically without Spring

Note that even though no Spring is explicitly used in the previous section, it is still used by default to have various CXF components registered with the bus such as transport factories. If no Spring libraries are available on the classpath then please follow the following example :

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Please see CXF SpringBoot documentation.

Please see JAX-RS Spring Boot and JAX-RS Spring Boot Scan demos.

Please see JAXRSClientSpringBoot documentation on how CXF JAX-RS Clients can be used in a SpringBoot Application.

Configuring JAX-RS endpoints programmatically without Spring

Note that even though no Spring is explicitly used in the previous section, it is still used by default to have various CXF components registered with the bus such as transport factories. If no Spring libraries are available on the classpath then please follow the following example :

Code Block

	java
	java

JAXRSServerFactoryBean sf = new JAXRSServerFactoryBean();
sf.setResourceClasses(CustomerService.class);
sf.setResourceProvider(CustomerService.class, new SingletonResourceProvider(new CustomerService()));
sf.setAddress("http://localhost:9000/");
BindingFactoryManager manager = sf.getBus().getExtension(BindingFactoryManager.class);
JAXRSBindingFactory factory = new JAXRSBindingFactory();
factory.setBus(sf.getBus());
manager.registerBindingFactory(JAXRSBindingFactory.JAXRS_BINDING_ID, factory);
sf.create();

Blueprint Web

This section describes how CXF JAX-RS endpoints can be bootstrapped with CXFBlueprintServlet and Blueprint contexts.

This approach is recommended for developers building CXF JAX-RS endpoints to be deployed in OSGI and which will do RequestDispatcher-based forwards.

Additionally it allows to reuse the same Blueprint contexts between OSGI and non-OSGI deployments.

Both options below work with CXF 3.1.3:

Code Block

	xml
	xml

<dependency>
  <groupId>org.apache.cxf</groupId>
  <artifactId>cxf-rt-frontend-jaxrs</artifactId>
  <version>3.1.3</version>
</dependency>

Maven dependencies

OSGI

Code Block

	xml
	xml

<dependency>
  <groupId>org.apache.aries.blueprint</groupId>
  <artifactId>org.apache.aries.blueprint.webosgi</artifactId>
  <version>1.0.1</version>
</dependency>

In OSGI (Karaf) one should also install a 'war' feature.

Servlet Container

Code Block

	xml
	xml

<dependency>
  <groupId>org.apache.aries.blueprint</groupId>
  <artifactId>org.apache.aries.blueprint.web</artifactId>
  <version>1.1.1</version>
</dependency>

Common example

This web.xml shows how to setup CXFBlueprintServlet which processes this Blueprint context. It works exactly the same way in OSGI and non-OSGI environments.

Configuring JAX-RS services in container with Spring configuration file.

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Code Block

	xml
	xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
	<servlet>
		<servlet-name>CXFServlet1</servlet-name>
		<display-name>CXF Servlet1</display-name>
		<servlet-class>
			org.apache.cxf.transport.servlet.CXFServlet
		</servlet-class>
                <init-param>
                   <param-name>config-location</param-name>
       
            <param-value>/WEB-INF/beans1.xml</param-value>
                </init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

        <servlet>
		<servlet-name>CXFServlet2</servlet-name>
		<display-name>CXF Servlet2</display-name>
		<servlet-class>
			org.apache.cxf.transport.servlet.CXFServlet
		</servlet-class>
                <init-param>
                   <param-name>config-location</param-name>
                   <param-value>/WEB-INF/beans2.xml</param-value>
                </init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>


	<servlet-mapping>
		<servlet-name>CXFServlet1</servlet-name>
		<url-pattern>/1/*</url-pattern>
	</servlet-mapping>

        <servlet-mapping>
		<servlet-name>CXFServlet2</servlet-name>
		<url-pattern>/2/*</url-pattern>
	</servlet-mapping>
</web-app>

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Code Block

	xml
	xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">

  <import resource="classpath:META-INF/cxf/cxf.xml" />
  <import resource="classpath:META-INF/cxf/cxf-servlet.xml" />

  <bean class="org.apache.cxf.jaxrs.JAXRSServerFactoryBean" init-method="create">
    <property name="address" value="/service1"/>
    <property:serviceBeans> name="serviceBeans">
      <ref bean="customerBean" />
    </property:serviceBeans>property>
  </jaxrs:server>bean>

  <bean id="customerBean" class="demo.jaxrs.server.CustomerService" />
</beans>

...

Prototype beans will have their postconstruct and predestroy method called before a resource method is invoked and immediately after the invocation has returned but before the response has actually been serialized. You can indicate that the predestroy method has to be called after the request has completely gone out of scope (that is after the response body if any has been written to the output stream) by adding an "org.apache.cxf.jaxrs.service.scope" property with the value set to "request".

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Code Block

	xml
	xml

<beans>
  
  <cxf:bus>
        <cxf:properties>
            <entry key="javax.ws.rs.ext.ExceptionMapper" value-ref="exceptionMapper"/>
        </cxf:properties>
  </cxf:bus

  <bean id="exceptionMapper" class="org.apache.cxf.systest.jaxrs.RuntimeExceptionMapper"/>

  <jaxrs:server id="customerService" address="/service1">
    <jaxrs:serviceBeans>
      <bean class="org.apache.cxf.systest.jaxrs.CustomerService"/>
    </jaxrs:serviceBeans>
  </jaxrs:server>

  <jaxrs:server id="customerService" address="/service2">
    <jaxrs:serviceBeans>
      <bean class="org.apache.cxf.systest.jaxrs.CustomerService2"/>
    </jaxrs:serviceBeans>
  </jaxrs:server>
  
  </beans>

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Code Block

	xml
	xml

<beans xmlns:util="http://www.springframework.org/schema/util">
  
  <cxf:bus>
        <cxf:properties>
            <entry key="org.apache.cxf.jaxrs.bus.providers" value-ref="busProviders"/>
        </cxf:properties>
  </cxf:bus

  <util:list id="busProviders">
    <ref bean="exceptionMapper"/>
    <ref bean="customMessageBodyReader"/>
    <ref bean="customMessageBodyWriter"/>
  </util:list>

  <bean id="exceptionMapper" class="org.apache.cxf.systest.jaxrs.RuntimeExceptionMapper"/>
  <bean id="customMessageBodyReader" class="org.apache.cxf.systest.jaxrs.CustomReader"/>
  <bean id="customMessageBodyWriter" class="org.apache.cxf.systest.jaxrs.CustomWriter"/> 

  <jaxrs:server id="customerService" address="/service1">
    <jaxrs:serviceBeans>
      <bean class="org.apache.cxf.systest.jaxrs.CustomerService"/>
    </jaxrs:serviceBeans>
  </jaxrs:server>

  <jaxrs:server id="customerService" address="/service2">
    <jaxrs:serviceBeans>
      <bean class="org.apache.cxf.systest.jaxrs.CustomerService2"/>
    </jaxrs:serviceBeans>
  </jaxrs:server>
  
  </beans>

...

Code Block

	xml
	xml

{code:xml}
<servlet>
 <servlet-name>CXFServlet</servlet-name>
 <display-name>CXF Servlet</display-name>
 <servlet-class>
     org.apache.cxf.transport.servlet.CXFServlet
 </servlet-class>
 <init-param>
    <param-name>config-location</param-name>
    <param-value>/WEB-INF/beans1.xml</param-value>
 </init-param>
 <init-param>
    <param-name>disable-address-updates</param-name>
    <param-value>true</param-value>
 </init-param>
 <load-on-startup>1</load-on-startup>
</servlet>

Code Block

Auto-discovery of root resources and providers

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Please see this page for more information.

Starting from CXF 3.1.0: JaxrsServletContextInitializer will be chiiped org.apache.cxf.jaxrs.servlet.sci.JaxrsServletContainerInitializer implementing javax.servlet.ServletContainerInitializer is shipped in a cxf-rt-rs-http-sc sci module.

Adding this module This will support no-web.xml and other JAX-RS deployments depending on the container auto-discovery mechanism as described in a 2.3.2 section of JSR-339 (JAX-RS 2.0).

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Child pages

Versions Compared

Old Version 34

New Version Current

Key

Configuring JAX-RS services programmatically

Spring Boot

Configuring JAX-RS endpoints programmatically without Spring

Configuring JAX-RS endpoints programmatically without Spring

Blueprint Web

Maven dependencies

OSGI

Servlet Container

Common example

Configuring JAX-RS services in container with Spring configuration file.

Auto-discovery of root resources and providers

Child pages

Page History

Versions Compared

Old Version 34

New Version Current

Key

Configuring JAX-RS services programmatically

Spring Boot

Configuring JAX-RS endpoints programmatically without Spring

Configuring JAX-RS endpoints programmatically without Spring

Blueprint Web

Maven dependencies

OSGI

Servlet Container

Common example

Configuring JAX-RS services in container with Spring configuration file.

Auto-discovery of root resources and providers