JAX-RS之resteasy跟spring整合

其实,在JAX-RS标准下,jboss的resteasy跟spring结合的话,无非是如何去取得
spring中的bean而已.两个方法,例子如下

1 比如有个接口和实现类

Java代码 ​​ ​​

1. public interface
2.     
3.     String getMsg();   
4.     
5. }

public interface CustomerBo{
 
  String getMsg();
 
}

  实现类

​

1. public class CustomerBoImpl implements
2.     
3. public
4.     
5. return "RESTEasy + Spring example";   
6.     
7.     }

public class CustomerBoImpl implements CustomerBo {
 
  public String getMsg() {
 
    return "RESTEasy + Spring example";
 
  }

applicationContext.xml

<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-3.0.xsd ">

<bean id="customerBo" class="com.mkyong.customer.impl.CustomerBoImpl">

        </bean>

</beans>

之后用WebApplicationContextUtils + ServletContext

引用

@Path("/customer")
public class PrintService {

CustomerBo customerBo;

@GET
@Path("/print")
public Response printMessage(@Context ServletContext servletContext) {

//get Spring application context
ApplicationContext ctx =
                     WebApplicationContextUtils.getWebApplicationContext(servletContext);
customerBo= ctx.getBean("customerBo",CustomerBo.class);

String result = customerBo.getMsg();

return Response.status(200).entity(result).build();

}

第2种方法,自己写类,实现ApplicationContextAware ,当然这个类要单例

​​​

1. import
2. import
3. import
4.     
5. public class SpringApplicationContext implements
6.     
7. private static
8.     
9. // Private constructor prevents instantiation from other classes 
10. private
11.     
12. @Override
13. public void
14. throws
15.         appContext = applicationContext;   
16.     
17.     }   
18.     
19. public static
20. return
21.     }   
22.     
23. }

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
 
public class SpringApplicationContext implements ApplicationContextAware {
 
  private static ApplicationContext appContext;
 
  // Private constructor prevents instantiation from other classes
        private SpringApplicationContext() {}
 
  @Override
  public void setApplicationContext(ApplicationContext applicationContext)
      throws BeansException {
    appContext = applicationContext;
 
  }
 
  public static Object getBean(String beanName) {
    return appContext.getBean(beanName);
  }
 
}

  applicationContext.xml

<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-3.0.xsd ">

<bean class="com.mkyong.context.SpringApplicationContext"></bean>

<bean id="customerBo" class="com.mkyong.customer.impl.CustomerBoImpl">

        </bean>

</beans>

使用:

​

1. import
2. import
3. import
4. import
5. import
6.     
7. @Path("/customer")   
8. public class
9.     
10.     CustomerBo customerBo;   
11.     
12. @GET
13. @Path("/print")   
14. public
15.     
16. "customerBo");   
17.     
18.         String result = customerBo.getMsg();   
19.     
20. return Response.status(200).entity(result).build();   
21.     
22.     }   
23.     
24. }

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.core.Response;
import com.mkyong.context.SpringApplicationContext;
import com.mkyong.customer.CustomerBo;
 
@Path("/customer")
public class PrintService {
 
  CustomerBo customerBo;
 
  @GET
  @Path("/print")
  public Response printMessage() {
 
    customerBo = (CustomerBo) SpringApplicationContext.getBean("customerBo");
 
    String result = customerBo.getMsg();
 
    return Response.status(200).entity(result).build();
 
  }
 
}

    web.xml整合

<web-app id="WebApp_ID" version="2.4"

xmlns="http://java.sun.com/xml/ns/j2ee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

​​ http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> ​​ <display-name>Restful Web Application</display-name>

<context-param>

<param-name>resteasy.resources</param-name>

<param-value>com.mkyong.rest.PrintService</param-value>

</context-param>

<listener>

<listener-class>

org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap

                </listener-class>

</listener>

<listener>

<listener-class>

                        org.springframework.web.context.ContextLoaderListener

                </listener-class>

</listener>

<servlet>

<servlet-name>resteasy-servlet</servlet-name>

<servlet-class>

org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher

                </servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>resteasy-servlet</servlet-name>

<url-pattern>/*</url-pattern>

</servlet-mapping>

</web-app>