title: Spring 3.2 @ExceptionHandler @ResponseBody JSON Response Via Jackson
body: <p>Please help me to send JSON Response for the @ExceptionHandler.
  As far as i understand i need to configure the view resolver which handles response for this method.
  Please have a look at my code. Controller Advice:</p>
  
  <pre><code>import java.util.List;
  import java.util.Locale;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.context.MessageSource;
  import org.springframework.context.i18n.LocaleContextHolder;
  import org.springframework.http.HttpStatus;
  import org.springframework.validation.BindingResult;
  import org.springframework.validation.FieldError;
  import org.springframework.web.bind.MethodArgumentNotValidException;
  import org.springframework.web.bind.annotation.ControllerAdvice;
  import org.springframework.web.bind.annotation.ExceptionHandler;
  import org.springframework.web.bind.annotation.ResponseBody;
  import org.springframework.web.bind.annotation.ResponseStatus;
  
  import com.models.ValidationErrorDTO;
  
  @ControllerAdvice
  public class RestErrorHandler {
  
      private MessageSource messageSource;
  
      @Autowired
      public RestErrorHandler(MessageSource messageSource) {
          this.messageSource = messageSource;
      }
  
      @ExceptionHandler(MethodArgumentNotValidException.class)
      @ResponseStatus(HttpStatus.BAD_REQUEST)
      @ResponseBody
      public ValidationErrorDTO processValidationError(
              MethodArgumentNotValidException ex) {
          System.out.println("IN THE EXCEPTION HANDLER !!!!");
          BindingResult result = ex.getBindingResult();
          List&lt;FieldError&gt; fieldErrors = result.getFieldErrors();
  
          return processFieldErrors(fieldErrors);
      }
  
      private ValidationErrorDTO processFieldErrors(List&lt;FieldError&gt; fieldErrors) {
          ValidationErrorDTO dto = new ValidationErrorDTO();
  
          for (FieldError fieldError : fieldErrors) {
              String localizedErrorMessage = resolveLocalizedErrorMessage(fieldError);
              dto.addFieldError(fieldError.getField(), localizedErrorMessage);
          }
  
          return dto;
      }
  
      private String resolveLocalizedErrorMessage(FieldError fieldError) {
          Locale currentLocale = LocaleContextHolder.getLocale();
          String localizedErrorMessage = messageSource.getMessage(fieldError,
                  currentLocale);
  
          // If the message was not found, return the most accurate field error
          // code instead.
          // You can remove this check if you prefer to get the default error
          // message.
          if (localizedErrorMessage.equals(fieldError.getDefaultMessage())) {
              String[] fieldErrorCodes = fieldError.getCodes();
              localizedErrorMessage = fieldErrorCodes[0];
          }
          System.out.println("THE MESSAGE IS :: " + localizedErrorMessage);
          return localizedErrorMessage;
      }
  }
  </code></pre>
  
  <p>Jackson View Resolver that i have in my application.</p>
  
  <pre><code>&lt;bean id="jacksonObjectMapper" class="org.codehaus.jackson.map.ObjectMapper" /&gt;
  &lt;bean id="jacksonSerializationConfig" class="org.codehaus.jackson.map.SerializationConfig"
      factory-bean="jacksonObjectMapper" factory-method="getSerializationConfig" /&gt;
  &lt;bean
      class="org.springframework.beans.factory.config.MethodInvokingFactoryBean"&gt;
      &lt;property name="targetObject" ref="jacksonSerializationConfig" /&gt;
      &lt;property name="targetMethod" value="setSerializationInclusion" /&gt;
      &lt;property name="arguments"&gt;
          &lt;list&gt;
              &lt;value type="org.codehaus.jackson.map.annotate.JsonSerialize.Inclusion"&gt;NON_DEFAULT&lt;/value&gt;
          &lt;/list&gt;
      &lt;/property&gt;
  &lt;/bean&gt;
  </code></pre>
  
  <p>Now I guess i need to add something like this to get the @ResponseBody Work for the @ExceptionHandler methods.</p>
  
  <pre><code>&lt;!-- JSON format support for Exception --&gt;
      &lt;bean id="methodHandlerExceptionResolver"
          class="org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver"&gt;
          &lt;property name="messageConverters"&gt;
              &lt;list&gt;
                  &lt;ref bean="jacksonMessageConverter" /&gt;
              &lt;/list&gt;
          &lt;/property&gt;
      &lt;/bean&gt;
      &lt;bean id="jacksonMessageConverter"
          class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"&gt;&lt;/bean&gt;
  </code></pre>
  
  <p>But i have no idea, how it is internally working, Please help !!</p>
  
  <p>This is the error i am getting :</p>
  
  <pre><code>02:09:28,030 ERROR [org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver] (http--127.0.0.1-8080-1) Failed to invoke @ExceptionHandler method: public com.models.ValidationErrorDTO com.RestErrorHandler.processValidationError(org.springframework.web.bind.MethodArgumentNotValidException): org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation
      at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:126) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:90) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:189) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:69) [spring-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:122) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.doResolveHandlerMethodException(ExceptionHandlerExceptionResolver.java:321) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.handler.AbstractHandlerMethodExceptionResolver.doResolveException(AbstractHandlerMethodExceptionResolver.java:60) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:136) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1148) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:985) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:920) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:827) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:801) [spring-webmvc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) [spring-security-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) [spring-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) [spring-web-3.2.1.RELEASE.jar:3.2.1.RELEASE]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
      at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
      at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
      at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
      at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
      at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_65]
  </code></pre>
  
  <p>References : 
  <a href="http://www.petrikainulainen.net/programming/spring-framework/spring-from-the-trenches-adding-validation-to-a-rest-api/" rel="nofollow noreferrer">http://www.petrikainulainen.net/programming/spring-framework/spring-from-the-trenches-adding-validation-to-a-rest-api/</a></p>
  
  <p><a href="https://stackoverflow.com/questions/5097134/spring-exceptionhandler-does-not-work-with-responsebody">Spring @ExceptionHandler does not work with @ResponseBody</a></p>
  
  <p><a href="http://www.waheedtechblog.in/2013/01/how-exceptionhandler-return-json-in.html" rel="nofollow noreferrer">http://www.waheedtechblog.in/2013/01/how-exceptionhandler-return-json-in.html</a></p>