Get HttpServletRequest in Jax Rs / Appfuse application?

陌路散爱 提交于 2019-12-28 06:17:11

问题


I created a basic application shell with AppFuse, and followed the AppFuse tutorial to create a a simple RESTful service with Jax-RS. That works just fine. A call to http://localhost:8080/services/api/persons returns a collection of Person objects as a Json formatted string with the right data.

I now would like to access the ServletRequest and ServletResponse objects from within a RESTful service exposed by Appfuse (to use another library that requires these objects).

I think that should be doable by adding an @Context annotation, e.g. following this StackOverflow post and this forum post.

But if I add the @Context tag (see below), it compiles fine but throws an Exception when the server is restarted (attached at bottom).

Here's the declaration of the @WebService:

@WebService
@Path("/persons")
public interface PersonManager extends GenericManager<Person, Long> {
    @Path("/")
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    List<Person> read();
    ...
}

And here's the implementation class where I think I would call the @Context annotation:

@Service("personManager") 
public class PersonManagerImpl extends GenericManagerImpl<Person, Long> implements PersonManager { 
    PersonDao personDao; 
    @Context ServletRequest request; // Exception thrown on launch if this is present 
    @Context ServletContext context;  // Exception thrown on launch of this is present 
    ... 
    } 

Hopefully I'm missing something simple, either something to include to make it work, or to realize that getting the ServletRequest isn't supposed to be possible because.... Any clues would be welcome.

Am running this on Tomcat in IntelliJ.

=== EXCEPTION STACK TRACE (Truncated) ===

Caused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are: 
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'serviceBeans' threw exception; nested exception is java.lang.RuntimeException: java.lang.NullPointerException 
        at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:102) 
        at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:58) 
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1358) 
        ... 37 more 

回答1:


Try injecting the HttpServletRequest and HttpServletContext directly:

@Context private HttpServletRequest servletRequest;
@Context private HttpServletContext servletContext;



回答2:


Adding it to the method signature worked. I imagine it's because the request and response objects don't yet exist when the class is instantiated, but does when called by the brower.

@Path("/")
@GET
@Produces(MediaType.APPLICATION_JSON)
List<Person> read( @Context HttpServletRequest httpServletRequest, @Context HttpServletResponse httpServletResponse) { }


来源:https://stackoverflow.com/questions/9612194/get-httpservletrequest-in-jax-rs-appfuse-application

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!