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 CustomerBo{   
2.     
3.     String getMsg();   
4.     
5. }  

public interface CustomerBo{ String getMsg(); }

  实现类
  

Java代码

1. public class CustomerBoImpl implements CustomerBo {   
2.     
3.     public String getMsg() {   
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
 

Java代码

1. import org.springframework.beans.BeansException;   
2. import org.springframework.context.ApplicationContext;   
3. import org.springframework.context.ApplicationContextAware;   
4.     
5. public class SpringApplicationContext implements ApplicationContextAware {   
6.     
7.     private static ApplicationContext appContext;   
8.     
9.     // Private constructor prevents instantiation from other classes  
10.         private SpringApplicationContext() {}   
11.     
12.     @Override  
13.     public void setApplicationContext(ApplicationContext applicationContext)   
14.             throws BeansException {   
15.         appContext = applicationContext;   
16.     
17.     }   
18.     
19.     public static Object getBean(String beanName) {   
20.         return appContext.getBean(beanName);   
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() {} @Overridepublic 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:
 

Java代码

1. import javax.ws.rs.GET;   
2. import javax.ws.rs.Path;   
3. import javax.ws.rs.core.Response;   
4. import com.mkyong.context.SpringApplicationContext;   
5. import com.mkyong.customer.CustomerBo;   
6.     
7. @Path("/customer")   
8. public class PrintService {   
9.     
10.     CustomerBo customerBo;   
11.     
12.     @GET  
13.     @Path("/print")   
14.     public Response printMessage() {   
15.     
16.         customerBo = (CustomerBo) SpringApplicationContext.getBean("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>