POST JSON fails with 415 Unsupported media type Spring 3 mvc

Question

I am trying to send a POST request to a servlet  Request is sent via jQuery in this way   var productCategory   new Object    productCategory idProductCategory   1  productCategory description    Descrizione2   newCategory productCategory     where newCategory is  function newCategory productCategory        postJSON  ajax newproductcategory   productCategory  function        idProductCategory          console debug  Inserted      idProductCategory             and postJSON is    postJSON   function url  data  callback        return jQuery ajax        type    POST        url   url       contentType    application json        data   JSON stringify data        dataType    json        success   callback              With firebug I see that JSON is sent correctly     idProductCategory  1  description   Descrizione2     But I get 415 Unsupported media type  Spring mvc controller has signature       RequestMapping value     ajax newproductcategory   method   RequestMethod POST  public  ResponseBody Integer newProductCategory HttpServletRequest request           RequestBody ProductCategory productCategory    Some days ago it worked  now it is not  I ll show more code if needed  Thanks

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I managed out how to make it works  Tell me in case I am wrong  I used only one way to serialize deserialize  I removed all annotations regarding this   JSONSerialize and  JSONDeserialize  and registered Serializers and Deserializers in CustomObjectMapper class  I didn t find an article explaining this behaviour but I resolved in this way  Hope it s useful

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I had the same issue  adding    lt mvc annotation-driven   gt   lt mvc default-servlet-handler   gt    to the spring-xml solved it

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I faced a similar issue and this is how I fixed it   The problem is due to the conversion process from JSON to Java  one need to have the right run time jackson libraries for the conversion to happen correctly   Add the following jars  through dependency or by downloading and adding to the classpath    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   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 5 3 lt  version gt   lt  dependency gt    This should fix the problem    Complete Code   function         ajax       type   POST       url   saveUserDetails do       data  JSON stringify         name   Gerry         ity   Sydney              headers           Accept    application json          Content-Type    application json             success  function data          if  data status     OK           alert  Person has been added          else         alert  Failed adding person      data status          data errorMessage       and the controller signature looks like this    RequestMapping value     saveUserDetails do   method   RequestMethod POST  public  ResponseBody Person addPerson   RequestBody final  Person person      Hope this helps

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1 a  Add following in  applicationContext-mvc xml   xmlns mvc  http   www springframework org schema mvc  xsi schemaLocation       http   www springframework org schema mvc http   www springframework org schema mvc     add jackson library

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I had a similar problem but found the issue was that I had neglected to provide a default constructor for the DTO that was annotated with  RequestBody

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In your Model Class add a json property annotation  also have a default constructor   JsonProperty  user name   private String userName    JsonProperty  first name   private String firstName    JsonProperty  last name   private String lastName

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Spring boot   spring mvn  with issue    PostMapping   addDonation   public String addDonation  RequestBody DonatorDTO donatorDTO      with solution    RequestMapping value     addDonation   method   RequestMethod POST   ResponseBody public GenericResponse addDonation final DonatorDTO donatorDTO  final HttpServletRequest request

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I faced this issue when I integrated spring boot with spring mvc  I solved it by just adding these dependencies    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   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 5 3 lt  version gt   lt  dependency gt

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A small side note - stumbled upon this same error while developing a web application  The mistake we found  by toying with the service with Firefox Poster  was that both fields and values in the Json should be surrounded by double quotes  For instance        idProductCategory     1     description   Descrizione1         idProductCategory     2     description   Descrizione2       In our case we filled the json via javascript  which can be a little confusing when it comes with dealing with single double quotes  from what I ve heard   What s been said before in this and other posts  like including the  Accept  and  Content-Type  headers  applies too   Hope t helps

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I resolved this issue by adding jackson-json data binding to my pom    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 3 lt  version gt   lt  dependency gt

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I had the same problem  I had to follow these steps to resolve the issue   1  Make sure you have the following 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   jackson-version  lt  version gt     2 4 3      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   jackson-version  lt  version gt     2 4 3      lt  dependency gt    2  Create the following filter       public class CORSFilter extends OncePerRequestFilter             Override         protected void doFilterInternal HttpServletRequest request                                          HttpServletResponse response  FilterChain filterChain                  throws ServletException  IOException                String origin   request getHeader  origin                origin    origin    null    origin equals         null    origin              response addHeader  Access-Control-Allow-Origin   origin               response addHeader  Access-Control-Allow-Methods    POST  GET  PUT  UPDATE  DELETE  OPTIONS                response addHeader  Access-Control-Allow-Credentials    true                response addHeader  Access-Control-Allow-Headers                        Authorization  origin  content-type  accept  x-requested-with                 filterChain doFilter request  response                     3  Apply the above filter for the requests in web xml       lt filter gt           lt filter-name gt corsFilter lt  filter-name gt           lt filter-class gt com your package CORSFilter lt  filter-class gt       lt  filter gt       lt filter-mapping gt           lt filter-name gt corsFilter lt  filter-name gt           lt url-pattern gt    lt  url-pattern gt       lt  filter-mapping gt    I hope this is useful to somebody

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I believe I ran exactly into the same issue  After countless hours of fighting with the JSON  the JavaScript and the Server  I found the culprit  In my case I had a Date object in the DTO  this Date object was converted to a String so we could show it in the view with the format  HH mm   When JSON information was being sent back  this Date String object had to be converted back into a full Date Object  therefore we also need a method to set it in the DTO  The big BUT is you cannot have 2 methods with the same name  Overload  in the DTO even if they have different type of parameter  String vs Date  because this will give you also the 415 Unsupported Media type error   This was my controller method     RequestMapping value     alarmdownload update   produces    application json   method   RequestMethod POST    public  ResponseBody   StatusResponse update  RequestBody AlarmDownloadDTO   rowList        System out println  hola        return new StatusResponse          This was my DTO example  id get set and preAlarm get Methods are not included for code shortness     JsonIgnoreProperties ignoreUnknown   true  public class AlarmDownloadDTO implements Serializable      private static final SimpleDateFormat formatHHmm   new SimpleDateFormat  HH mm       private String id    private Date preAlarm     public void setPreAlarm Date date         this preAlarm    date        public void setPreAlarm String date            try         this preAlarm   formatHHmm parse date         catch  ParseException e          this preAlarm   null        catch  NullPointerException e         this preAlarm   null                To make everything work you need to remove the method with Date type parameter  This error is very frustrating  Hope this can save someone hours of debugging

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I ve had this happen before with Spring  ResponseBody and it was because there was no accept header sent with the request  Accept header can be a pain to set with jQuery  but this worked for me source    postJSON   function url  data  callback        return jQuery ajax       headers              Accept    application json            Content-Type    application json               type    POST        url   url       data   JSON stringify data        dataType    json        success   callback              The Content-Type header is used by  RequestBody to determine what format the data being sent from the client in the request is  The accept header is used by  ResponseBody to determine what format to sent the data back to the client in the response  That s why you need both headers

User · Answer

adding content type into the request as application json resolved the issue

[ajax] POST JSON fails with 415 Unsupported media type, Spring 3 mvc

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