using @requestbody for Jsons request not working saying "Method not allowed"

[namratanarula]

HI,
I have Spring applications built where in I am able to retrieve the response when using simple request parameters in the request coming from UI.However when trying to replace it with @RequestBody with passing a json in the request.It gives me 405 "Method not allowed error".
Here is the code of web.xml file
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherSe rvlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>

<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListe ner
</listener-class>
</listener>

spring_servlet.xml

<context:component-scan base-package="com.dataguise.dgcontrol.servlets" />
<mvc:annotation-driven />
<bean class="org.springframework.web.servlet.mvc.annotat ion.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>

<ref bean="jsonConverter" />
</list>
</property>
</bean>

<bean class="org.springframework.web.servlet.view.json.M appingJacksonJsonView">
<property name="contentType" value="application/json"/>
</bean>

<bean id="jsonConverter"
class="org.springframework.http.converter.json.Map pingJacksonHttpMessageConverter">
<property name="supportedMediaTypes" value="application/json" />
</bean>

My Spring controller class has two methods
@Controller


public class DgCentralControllerServlet {

DgControlRepository repo = new DgControlRepository();


///Method 1
@RequestMapping(value ="/LoadDiscoverExpression")
public @ResponseBody List<DgPolicyRegexPatternsUI> getMovie(@RequestParam("id") Integer id ,@RequestParam("source") String source, HttpServletResponse response,
HttpServletRequest request) throws DgException{

List<DgPolicyRegexPatternsUI> dgRegexPatternsList = repo.loadPolicyRegexPatternsTest(id,source, "All");

return dgRegexPatternsList;
}

/// Method 2
@RequestMapping(value ="/LoadDiscover", method=RequestMethod.POST, headers={"Accept=*/*", "Content-Type=application/json"})
public @ResponseBody DgDiscoverExpressionPol getexp(@RequestBody DgDiscoverExpressionPol pol,Model model) throws Exception{

DgDiscoverExpressionPol returnpol = new DgDiscoverExpressionPol();
returnpol.setSource(pol.getSource());
return returnpol;
}

Method 1 works and gives me response when running the URL on the browser .using RESTCLIENT addon on mozilla
http://localhost:8080/dgControl/Load...rce=structured

However when using the Method 2 on the the RESTCLIENT (add on on mozilla) to give POST request
http://localhost:8080/dgControl/LoadDiscover
with the request body as json={"source":"structured"}

It gives me 405 Method not allowed error

Is there any other classes I need to create for json conversion to Objects to me implemented?

[Marten Deinum]

Please use [ code][/code ] tags when posting code/xml/stacktraces, that way it remains readable...

Don't use the ion.AnnotationMethodHandlerAdapter when using Spring 3.1 or up. Remove it, jackson will be setup for you automatically by Spring 3.1 and up when it detects the classes.

[namratanarula]

HI,
Thanks for the reply.Removing the AnnotationMethodhandlerAdapter didnt help.Infact this time the error I saw in tomcat console logs were

java.lang.NoSuchMethodError: org.codehaus.jackson.type.JavaType.isConcrete()Z
    at org.codehaus.jackson.map.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:80)
    at org.codehaus.jackson.map.deser.StdDeserializerProvider._createDeserializer(StdDeserializerProvider.java:266)
    at org.codehaus.jackson.map.deser.StdDeserializerProvider._createAndCacheValueDeserializer(StdDeserializerProvider.java:198)
    at org.codehaus.jackson.map.deser.StdDeserializerProvider.hasValueDeserializerFor(StdDeserializerProvider.java:152)

[Marten Deinum]

Looks like a jackson version error or jar conflict.

[namratanarula]

I noticed that I was using @enableWebMvc annotation in my @controller class.Removing this annotation solved the above issue.But the "Method not allowed" error is still there.In fact when seeing the detail explanation of the error in the REST client , it says

The specified HTTP method is not allowed for the requested resource (Request method 'POST' not supported).

where in I have specified the method definition as POST

@RequestMapping(value ="/LoadDiscover", method=RequestMethod.POST, headers={"Accept=*/*", "Content-Type=application/json"})

I am not sure where m I missing things

[Marten Deinum]

Enable trace logging to see what is happening inside spring and why the request isn't matched. I would start by removing the headers part and see if that makes it work.

[namratanarula]

Hey, Thanks a ton..I enabled the log trace and this is what I received

2013-02-27 16:03:02,984 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.FrameworkServlet:processRequest(643) | Bound request context to thread: org.apache.catalina.connector.RequestFacade@1ea07a3 
2013-02-27 16:03:03,020 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.DispatcherServlet:doService(690) | DispatcherServlet with name 'spring' processing POST request for [/dgControl/LoadDiscover] 
2013-02-27 16:03:03,083 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.DispatcherServlet:getHandler(939) | Testing handler map [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping@468fa3] in DispatcherServlet with name 'spring' 
2013-02-27 16:03:03,119 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.handler.AbstractUrlHandlerMapping:getHandlerInternal(219) | Mapping [/LoadDiscover] to handler 'com.dataguise.dgcontrol.servlets.DgCentralControllerServlet@192a63a' 
2013-02-27 16:03:03,151 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.DispatcherServlet:getHandlerAdapter(976) | Testing handler adapter [org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter@ce0284] 
2013-02-27 16:03:03,216 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver:resolveException(106) | Resolving exception from handler [com.dataguise.dgcontrol.servlets.DgCentralControllerServlet@192a63a]: org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' not supported 
2013-02-27 16:03:03,296 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver:resolveException(106) | Resolving exception from handler [com.dataguise.dgcontrol.servlets.DgCentralControllerServlet@192a63a]: org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' not supported 
2013-02-27 16:03:03,336 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver:resolveException(106) | Resolving exception from handler [com.dataguise.dgcontrol.servlets.DgCentralControllerServlet@192a63a]: org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' not supported 
2013-02-27 16:03:03,366 |  WARN | 	[http-8080-1] |org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver:handleHttpRequestMethodNotSupported(166) | Request method 'POST' not supported 
2013-02-27 16:03:03,401 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.DispatcherServlet:doDispatch(805) | Null ModelAndView returned to DispatcherServlet with name 'spring': assuming HandlerAdapter completed request handling 
2013-02-27 16:03:03,431 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.FrameworkServlet:processRequest(670) | Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade@1ea07a3 
2013-02-27 16:03:03,456 | DEBUG | 	[http-8080-1] |org.springframework.web.servlet.FrameworkServlet:processRequest(677) | Successfully completed request 
2013-02-27 16:03:03,488 | DEBUG | 	[http-8080-1] |org.springframework.context.support.AbstractApplicationContext:publishEvent(299) | Publishing event in WebApplicationContext for namespace 'spring-servlet': ServletRequestHandledEvent: url=[/dgControl/LoadDiscover]; client=[0:0:0:0:0:0:0:1]; method=[POST]; servlet=[spring]; session=[null]; user=[null]; time=[499ms]; status=[OK] 
2013-02-27 16:03:03,521 | DEBUG | 	[http-8080-1] |org.springframework.context.support.AbstractApplicationContext:publishEvent(299) | Publishing event in Root WebApplicationContext: ServletRequestHandledEvent: url=[/dgControl/LoadDiscover]; client=[0:0:0:0:0:0:0:1]; method=[POST]; servlet=[spring]; session=[null]; user=[null]; time=[499ms]; status=[OK]

Trying to see where did I miss the handler

[Marten Deinum]

It appears to be still debug nog trace. Which spring version are you using?

[namratanarula]

I am using spring 3.0