How to get full REST request body using Jersey

Question

How can one get the full HTTP REST request body for a POST request using Jersey   In our case the data will be XML   Size would vary from 1K to 1MB   The docs seem to indicate you should use MessageBodyReader but I can t see any examples

User · Answer

Since you re transferring data in xml  you could also  un marshal directly from to pojos   There s an example  and more info  in the jersey user guide  which I copy here   POJO with JAXB annotations    XmlRootElement public class Planet       public int id      public String name      public double radius      Resource    Path  planet   public class Resource         GET      Produces MediaType APPLICATION XML      public Planet getPlanet             Planet p   new Planet            p id   1          p name    Earth           p radius   1 0           return p              POST      Consumes MediaType APPLICATION XML      public void setPlanet Planet p            System out println  setPlanet     p name                    The xml that gets produced consumed    lt  xml version  1 0  encoding  UTF-8  standalone  yes   gt   lt planet gt       lt id gt 1 lt  id gt       lt name gt Earth lt  name gt       lt radius gt 1 0 lt  radius gt   lt  planet gt

User · Answer

You could use the  Consumes annotation to get the full body   import javax ws rs Consumes  import javax ws rs POST  import javax ws rs Path  import javax ws rs core MediaType  import javax xml transform Transformer  import javax xml transform TransformerConfigurationException  import javax xml transform TransformerException  import javax xml transform TransformerFactory  import javax xml transform dom DOMSource  import javax xml transform stream StreamResult  import org w3c dom Document    Path  doc   public class BodyResource      POST    Consumes MediaType APPLICATION XML    public void post Document doc  throws TransformerConfigurationException  TransformerException         Transformer tf   TransformerFactory newInstance   newTransformer        tf transform new DOMSource doc   new StreamResult System out            Note  Don t forget the  Content-Type  application xml  header by the request

User · Answer

Turns out you don t have to do much at all     See below - the parameter x will contain the full HTTP body  which is XML in our case     POST public Response go String x  throws IOException

User · Answer

Try this using this single code   import javax ws rs POST  import javax ws rs Path    Path   serviceX   public class MyClassRESTService         POST      Path   doSomething          public void someMethod String x             System out println x                      String x contains the body  you can process                    it  parse it using JAXB and so on                The url for try rest services ends       serviceX doSomething

User · Answer

It does seem you would have to use a MessageBodyReader here  Here s an example  using jdom   import org jdom Document  import javax ws rs ext MessageBodyReader  import javax ws rs ext Provider  import javax ws rs ext MediaType  import javax ws rs ext MultivaluedMap  import java lang reflect Type  import java lang annotation Annotation  import java io InputStream    Provider    this annotation is necessary   ConsumeMime  application xml      this is a hint to the system to only consume xml mime types public class XMLMessageBodyReader implements MessageBodyReader lt Document gt      private SAXBuilder builder   new SAXBuilder       public boolean isReadable Class type  Type genericType  Annotation   annotations  MediaType mediaType           check if we re requesting a jdom Document     return Document class isAssignableFrom type          public Document readFrom Class type  Type genericType  Annotation   annotations  MediaType mediaType  MultivaluedMap lt String  String gt  httpHeaders  InputStream entityStream        try         return builder build entityStream             catch  Exception e             handle error somehow                Add this class to the list of resources your jersey deployment will process  usually configured via web xml  I think   You can then use this reader in one of your regular resource classes like this    Path   somepath    POST public void handleXMLData Document doc         do something with the document     I haven t verified that this works exactly as typed  but that s the gist of it  More reading here    http   weblogs java net blog mhadley archive 2008 02 integrating jer 2 html http   blogs oracle com sandoz entry jersey and abdera with a

[java] How to get full REST request body using Jersey?

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