Spring JSON request getting 406 not Acceptable

Question

this is my javascript       function getWeather               getJSON  getTemperature         data option selected   val    null  function data                alert  Success                                                       this is my controller    RequestMapping value   getTemperature  id    headers  Accept       method   RequestMethod GET   ResponseBody public Weather getTemparature  PathVariable  id   Integer id       Weather weather   weatherService getCurrentWeather id           return weather      spring-servlet xml   lt context annotation-config   gt   lt tx annotation-driven   gt    Getting this error   GET http   localhost 8080 web getTemperature 2 406  Not Acceptable    Headers   Response Headers  Server  Apache-Coyote 1 1 Content-Type    text html charset utf-8 Content-Length  1070 Date    Sun  18 Sep 2011 17 00 35 GMT   Request Headers  Host    localhost 8080 User-Agent  Mozilla 5 0  Windows NT 6 1  WOW64  rv 6 0 2  Gecko 20100101 Firefox 6 0 2 Accept  application json  text javascript       q 0 01 Accept-Language en-us en q 0 5 Accept-Encoding gzip  deflate Accept-Charset  ISO-8859-1 utf-8 q 0 7   q 0 7 Connection  keep-alive X-Requested-With    XMLHttpRequest Referer http   localhost 8080 web weather Cookie  JSESSIONID 7D27FAC18050ED84B58DAFB0A51CB7E4   Interesting note   I get 406 error  but the hibernate query works meanwhile  This is what tomcat log says  everytime when I change selection in dropbox    select weather0  ID as ID0 0   weather0  CITY ID as CITY2 0 0   weather0  DATE as DATE0 0   weather0  TEMP as TEMP0 0  from WEATHER weather0  where weather0  ID     What could the problem be  There were two similar questions in SO before  I tried all the accepted hints there  but they did not work I guess     Any suggestions  Feel free to ask questions

User · Answer

lt dependency gt       lt groupId gt com fasterxml jackson jaxrs lt  groupId gt       lt artifactId gt jackson-jaxrs-base lt  artifactId gt       lt version gt 2 6 3 lt  version gt   lt  dependency gt

User · Answer

Make sure that the sent object  Weather in this case  contains getter setter

User · Answer

As  atott mentioned   If you have added the latest version of Jackson in your pom xml  and with Spring 4 0 or newer  using  ResponseBody on your action method and  RequestMapping configured with produces  application json charset utf-8   however  you still got 406 Not Acceptable   I guess you need to try this in your MVC DispatcherServlet context configuration    lt mvc annotation-driven content-negotiation-manager  contentNegotiationManager    gt    lt bean id  contentNegotiationManager  class  org springframework web accept ContentNegotiationManagerFactoryBean  gt       lt property name  favorPathExtension  value  false    gt   lt  bean gt    That s the way how I resolved my issue finally

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Can you remove the headers element in  RequestMapping and try     Like      RequestMapping value   getTemperature  id    method   RequestMethod GET     I guess spring does an  contains check  rather than exact match for accept headers  But still  worth a try to remove the headers element and check

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lt dependency gt           lt groupId gt com fasterxml jackson core lt  groupId gt           lt artifactId gt jackson-databind lt  artifactId gt           lt version gt 2 8 0 lt  version gt       lt  dependency gt    i don t use ssl authentication and this jackson-databind contain jackson-core jar and jackson-databind jar  and then change the RequestMapping content like this    RequestMapping value     id  number    produces    application json  charset UTF-8   method   RequestMethod GET  public  ResponseBody Customer findCustomer  PathVariable int number       Customer result   customerService findById number       return result      attention  if your produces is not  application json  type and i had not noticed this and got an 406 error  help this can help you out

User · Answer

Check as  joyfun did for the correct version of jackson but also check our headers     Accept   may not be transmitted by the client     use firebug or equivalent to check what your get request is actually sending   I think the headers attribute of the annotation  may  be checking literals although I m not 100  sure

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Make sure that following 2 jar s are present in class path   If any one or both are missing then this error will come   jackson-core-asl-1 9 X jar jackson-mapper-asl-1 9 X jar

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406 Not Acceptable The resource identified by the request is only capable of generating response entities which have content characteristics not acceptable according to the accept headers sent in the request   So  your request accept header is application json and your controller is not able to return that  This happens when the correct HTTPMessageConverter can not be found to satisfy the  ResponseBody annotated return value  HTTPMessageConverter are automatically registered when you use the  lt mvc annotation-driven gt   given certain 3-d party libraries in the classpath  Either you don t have the correct Jackson library in your classpath  or you haven t used the  lt mvc annotation-driven gt  directive  I successfully replicated your scenario and it worked fine using these two libraries and no headers  quot Accept     quot  directive   jackson-core-asl-1 7 4 jar jackson-mapper-asl-1 7 4 jar

User · Answer

Finally found answer from here   Mapping restful ajax requests to spring  I quote       RequestBody  ResponseBody annotations don t use normal view resolvers  they use their own HttpMessageConverters  In order to use these annotations  you should configure these converters in AnnotationMethodHandlerAdapter  as described in the reference  you probably need MappingJacksonHttpMessageConverter

User · Answer

There is another case where this status will be returned  if the Jackson mapper cannot figure out how to serialize your bean  For example  if you have two accessor methods for the same boolean property  isFoo   and getFoo     What s happening is that Spring s MappingJackson2HttpMessageConverter calls Jackson s StdSerializerProvider to see if it can convert your object  At the bottom of the call chain  StdSerializerProvider  createAndCacheUntypedSerializer throws a JsonMappingException with an informative message  However  this exception is swallowed by StdSerializerProvider  createAndCacheUntypedSerializer  which tells Spring that it can t convert the object  Having run out of converters  Spring reports that it s not being given an Accept header that it can use  which of course is bogus when you re giving it       There is a bug for this behavior  but it was closed as  cannot reproduce   the method that s being called doesn t declare that it can throw  so swallowing exceptions is apparently an appropriate solution  yes  that was sarcasm   Unfortunately  Jackson doesn t have any logging     and there are a lot of comments in the codebase wishing it did  so I suspect this isn t the only hidden gotcha

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make sure your have correct jackson version   in your classpath

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check this thread  spring mvc restcontroller return json string p s  you should add jack son mapping config to your WebMvcConfig class      Override   protected void configureMessageConverters            List lt HttpMessageConverter lt   gt  gt  converters             put the jackson converter to the front of the list so that application json content-type strings will be treated as JSON       converters add new MappingJackson2HttpMessageConverter              and probably needs a string converter too for text plain content-type strings to be properly handled       converters add new StringHttpMessageConverter

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I had same issue  with Latest Spring 4 1 1 onwards you need to add following jars to pom xml    lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-core lt  artifactId gt       lt version gt 2 4 1 lt  version gt   lt  dependency gt   lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-databind lt  artifactId gt       lt version gt 2 4 1 1 lt  version gt   lt  dependency gt    also make sure you have following jar    lt dependency gt       lt groupId gt org codehaus jackson lt  groupId gt       lt artifactId gt jackson-core-asl lt  artifactId gt       lt version gt 1 9 13 lt  version gt   lt  dependency gt    lt dependency gt       lt groupId gt org codehaus jackson lt  groupId gt       lt artifactId gt jackson-mapper-asl lt  artifactId gt       lt version gt 1 9 13 lt  version gt   lt  dependency gt    406 Spring MVC Json  not acceptable according to the request  quot accept quot  headers

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Spring 4 3 10   I used the below settings to resolve the issue   Step 1  Add the below dependencies       lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-core lt  artifactId gt       lt version gt 2 6 7 lt  version gt   lt  dependency gt   lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-databind lt  artifactId gt       lt version gt 2 6 7 lt  version gt   lt  dependency gt   lt dependency gt       lt groupId gt org codehaus jackson lt  groupId gt       lt artifactId gt jackson-core-asl lt  artifactId gt       lt version gt 1 9 13 lt  version gt   lt  dependency gt   lt dependency gt       lt groupId gt org codehaus jackson lt  groupId gt       lt artifactId gt jackson-mapper-asl lt  artifactId gt       lt version gt 1 9 13 lt  version gt   lt  dependency gt    Step 2  Add the below in your MVC DispatcherServlet context configuration    lt mvc annotation-driven content-negotiation-manager  contentNegotiationManager   gt    lt bean id  contentNegotiationManager      class  org springframework web accept ContentNegotiationManagerFactoryBean  gt       lt property name  favorPathExtension  value  false   gt       lt property name  favorParameter  value  true   gt       lt property name  ignoreAcceptHeader  value  false    gt   lt  bean gt    Since spring 3 2  as per the default configuration favorPathExtension is set as true  because of this if the request uri have any proper extensions like  htm spring will give priority for the extension  In step 2 I had added the contentNegotiationManager bean to override this

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This is update answer for springVersion 5 0 3 RELEASE    Those above answers will be only worked older springVersion  lt  4 1 version  for latest spring you have to add following dependencies in gradle file   compile group   com fasterxml jackson core   name   jackson-core   version  fasterxmljackson compile group   com fasterxml jackson core   name   jackson-databind   version  fasterxmljackson  fasterxmljackson 2 9 4   I hope this will be helpful for who using latest spring version

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In the controller  shouldn t the response body annotation be on the return type and not the method  like so     RequestMapping value   getTemperature  id    headers  Accept       method   RequestMethod GET  public  ResponseBody Weather getTemparature  PathVariable  id   Integer id       Weather weather   weatherService getCurrentWeather id           return weather      I d also use the raw jquery ajax function  and make sure contentType and dataType are being set correctly   On a different note  I find the spring handling of json rather problematic  It was easier when I did it all myself using strings  and GSON

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I was having the same problem because I was missing the  EnableWebMvc annotation   All of my spring configurations are annotation-based  the XML equivalent would be mvc annotation-driven

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Other then the obvious problems I had another one that I couldn t fix regardless of including all possible JARs  dependancies and annotations in Spring servlet  Eventually I found that I have wrong file extension by that I mean I had two separate servlet running in same container and I needed to map to different file extensions where one was   do  and the other as used for subscriptions was randomly named   sub   All good but SUB is valid file extension normally used for films subtitle files and thus Tomcat was overriding the header and returning something like  text x-dvd sub     so all was fine but the application was expecting JSON but getting Subtitles thus all I had to do is change the mapping in my web xml file I ve added    lt mime-mapping gt       lt extension gt sub lt  extension gt       lt mime-type gt application json lt  mime-type gt   lt  mime-mapping gt

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I had the same problem  my controller method executes but response is Error 406  I debug AbstractMessageConverterMethodProcessor writeWithMessageConverters and found that method ContentNegotiationManager resolveMediaTypes always returns text html which is not supported by MappingJacksonHttpMessageConverter  The problem is that the  org springframework web accept ServletPathExtensionContentNegotiationStrategy works earlier than org springframework web accept HeaderContentNegotiationStrategy  and extension of my request  get-clients html is the cause of my problem with Error 406  I just changed request url to  get-clients

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Check  lt mvc annotation-driven   gt  in dispatcherservlet xml   if not add it  And add     lt dependency gt       lt groupId gt org codehaus jackson lt  groupId gt       lt artifactId gt jackson-core-asl lt  artifactId gt       lt version gt 1 9 13 lt  version gt   lt  dependency gt    lt dependency gt       lt groupId gt org codehaus jackson lt  groupId gt       lt artifactId gt jackson-mapper-asl lt  artifactId gt       lt version gt 1 9 13 lt  version gt   lt  dependency gt    these dependencies in your pom xml

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I had the same problem unfortunately non of the solution here solved my problem as my problem was something in a different class    I first checked that all dependencies are in place as suggested by  bekur  then I checked the request response that travels from clients to the server all headers was in place an properly set by Jquery   I then checked the RequestMappingHandlerAdapter MessageConverters and all 7 of them were in place  I really started to hate Spring   I then updated to from Spring 4 0 6 RELEASE to 4 2 0 RELEASE I have got another response rather than the above  It was Request processing failed  nested exception is java lang IllegalArgumentException  No converter found for return value of type   Here is my controller method      RequestMapping value     upload   method   RequestMethod POST produces    application json       public ResponseEntity lt UploadPictureResult gt  pictureUpload FirewalledRequest initialRequest             DefaultMultipartHttpServletRequest request    DefaultMultipartHttpServletRequest  initialRequest getRequest             try               Iterator lt String gt  iterator   request getFileNames                 while  iterator hasNext                      MultipartFile file   request getFile iterator next                     session save toImage file                            catch  Exception e                return new ResponseEntity lt UploadPictureResult gt  new UploadPictureResult   HttpStatus INTERNAL SERVER ERROR                     return new ResponseEntity lt UploadPictureResult gt  new UploadPictureResult    HttpStatus OK                  public class UploadPictureResult extends WebResponse       private List lt Image gt  images       public void setImages List lt Image gt  images            this images   images                    public class WebResponse implements Serializable         protected String message       public WebResponse                public WebResponse String message             this message   message              public void setMessage String message            this message   message            The solution was to make UploadPictureResult not to extend WebResponse   For some reason spring was not able to determine the how to convert UploadPictureReslt when it extended WebResponse

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Probably no one is scrolling down this far  but none of the above solutions fixed it for me  but making all my getter methods public did   I d left my getter visibility at package-private  Jackson decided it couldn t find them and blew up   Using  JsonAutoDetect getterVisibility NON PRIVATE  only partially fixed it

[java] Spring JSON request getting 406 (not Acceptable)

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