Getting request object outside of DispatchServlet.

[Jay Abrahm]

I am trying to get the request object so that I could get the application URL outside of the dispatch servlet. I tried all three methods below and it returned null.

Is there any other way to get the request object from the RequestContextListener

ServletRequestAttributes t = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();
HttpServletRequest req = t.getRequest(); 

HttpServletRequest req = FlexContext.getHttpRequest();

@Autowired
private HttpServletRequest req; 

String completeURL = req.getRequestURL().toString() + "?" + req.getQueryString();

My web.xml has the following code.

<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>

<servlet>
	<servlet-name>springflex</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
	<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>springflex</servlet-name>
<url-pattern>/messagebroker/*</url-pattern>
</servlet-mapping>

Caused by: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
	at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:123)

[Mark Spritzler]

Where are you putting this code? In a Spring MVC Controller, a Servlet, a Struts Action. We need a little more context.

Mark

[Jay Abrahm]

I should have attached this earlier.

public class RoutingDataSource extends AbstractRoutingDataSource {

	@Autowired(required = true)
	private HttpServletRequest request; 

	public HttpServletRequest getRequest() {
		return request;
	}


	@Override
	protected Object determineCurrentLookupKey() {
		// Get URL, determine DB type
		
		// First attempt to get the complete URL
		ServletRequestAttributes t = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();  
		HttpServletRequest req = t.getRequest();   

		// Second attempt to get the complete URL
		HttpServletRequest req = FlexContext.getHttpRequest();  
		
		// Third attempt to get the complete URL
//		@Autowired  
//		private HttpServletRequest req;   
	
		String tempURL = req.getRequestURL().toString() + "?" + req.getQueryString();
		
		if(tempURL=..)
		return A;
		if(tempURL=..)
		return B;
	}
}


<bean id="dataSourceServerBased" class="com.test.RoutingDataSource">
   <property name="targetDataSources">
	  <map key-type="com.test.RoutingDataSource">
		 <entry key="A" value-ref="datasourceA"/>
		 <entry key="B" value-ref="datasourceB"/>
	  </map>
   </property>
   <property name="defaultTargetDataSource" ref="A"/>
</bean>

[Mark Spritzler]

Next question, how is that code being called. If is comes from a request already and goes first into the Controller or Action, then just get the data out of the request there and pass that down.

I think there is a design/architecture design flaw where you would need the HttpServletRequest passing into a non-controller/action class.

Mark

[Jay Abrahm]

The Spring container (if I can use that work here) calls this class since I have AbstractRoutingDataSource defined.

I basically need the HttpServletRequest so that I can get the URL to decide the datasource to connect to. If I can get the URL parameters in any other way that should do just fine.

[Sean Clark]

Hey,

I think personally I would use a standard filter to do this as it will have to be set for each request. That way you get the request passed in anyway to do your logic.

Sean

[MarK sujoKi]

@Jay Abrahm

Were you able to get the request object outside of DispatchServlet? If yes, could you please share how?

[Mark Spritzler]

Mark. I think it would be best to create a new thread with any question that you might have. Basically, putting your question into better context.

Thanks

Mark