在Jax Rs / Appfuse应用程序中获取HttpServletRequest？ [英] Get HttpServletRequest in Jax Rs / Appfuse application?

问题描述

我使用AppFuse创建了一个基本的应用程序shell，并遵循了 AppFuse教程使用Jax-RS创建一个简单的RESTful服务。这很好用。对 http：// localhost：8080 / services / api / persons 的调用将Person对象的集合作为带有正确数据的Json格式字符串返回。

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.

我现在想要访问 ServletRequest 和 ServletResponse Appfuse公开的RESTful服务中的对象（使用另一个需要这些对象的库）。

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).

我认为应该通过添加@Context注释来实现，例如按照 StackOverflow帖子和论坛帖子。

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

但是如果我添加@Context标签（如下所示，它可以很好地编译，但在重新启动服务器时会抛出异常（附在底部）。

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

这是 @WebService 的声明：

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

这是我认为的实施课程将调用 @Context 注释：

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 
    ... 
    } 

希望我错过了一些简单的东西，要么包括要使其工作，要么意识到不应该让ServletRequest成为可能因为......任何线索都会受到欢迎。

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.

我在IntelliJ的Tomcat上运行它。

Am running this on Tomcat in IntelliJ.

=== EXCEPTION STACK TRACE（截断）===

=== 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 

推荐答案

尝试注入 HttpServletRequest 和 HttpServletContext 直接：

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

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