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https://issues.apache.org/jira/browse/CXF-4772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13559618#comment-13559618
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Yan Min Sheng commented on CXF-4772:
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As the blog states, the DelegatingInputStream/CacheStream can not be read
twice, so it is a known issue in CXF? CXF can not support MTOM data save back
to client?
> AssessmentDataStore do not cache the last attachment binary stream, so the
> DataHandler.writeTo() will fail if it is called for the second time
> ----------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CXF-4772
> URL: https://issues.apache.org/jira/browse/CXF-4772
> Project: CXF
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.6.2
> Reporter: Yan Min Sheng
> Priority: Critical
> Labels: patch
> Attachments: CXF4772.patch
>
>
> When trying test MTOM through JAX-WS, we found that the AssessmentDataStore
> can only be written once. It will fail for the second time. After
> investigation, it seems that the binary stream is not cached by the
> AssessmentDataStore, so each time a DelegatingStream will be created to
> handle the writeTo request. While the DelegatingStream is closed, it can not
> handle the writeTo request again.
> The suggestion is to cache the newly created attachement after it is created
> in AttachmentDeserializer
> The interface is:
> /**
> * This class was generated by the JAXWS SI.
> * JAX-WS RI 2.0_01-b15-fcs
> * Generated source version: 2.0
> *
> */
> @WebService(name = "MTOMInterface", targetNamespace =
> "http://shengym.com/wssvt/acme/InsBusiness/";)
> public interface MTOMInterface {
> /**
> *
> * @param input
> * @param params
> * @return
> * returns com.ibm.wssvt.acme.insbusiness.ImageDepot
> * @throws InsFaultException
> */
> @WebMethod(action = "http://shengym.com/wssvt/acme/sendImage";)
> @WebResult(name = "output", targetNamespace = "")
> @RequestWrapper(localName = "sendImage", targetNamespace =
> "http://shengym.com/wssvt/acme/InsBusiness/";, className =
> "com.shengym.wssvt.acme.insbusiness.SendImage")
> @ResponseWrapper(localName = "sendImageResponse", targetNamespace =
> "http://shengym.com/wssvt/acme/InsBusiness/";, className =
> "com.shengym.wssvt.acme.insbusiness.SendImageResponse")
> public ImageDepot sendImage(
> @WebParam(name = "input", targetNamespace = "")
> ImageDepot input,
> @WebParam(name = "params", targetNamespace = "")
> ParamsType params)
> throws InsFaultException
> ;
> }
> ImageDepot.java
> @XmlAccessorType(XmlAccessType.FIELD)
> @XmlType(name = "ImageDepot", propOrder = {
> "image"
> })
> public class ImageDepot {
> @XmlElement(required = true)
> @XmlMimeType("multipart/*")
> protected List<DataHandler> image;
> /**
> * Gets the value of the image property.
> *
> * <p>
> * This accessor method returns a reference to the live list,
> * not a snapshot. Therefore any modification you make to the
> * returned list will be present inside the JAXB object.
> * This is why there is not a <CODE>set</CODE> method for the image
> property.
> *
> * <p>
> * For example, to add a new item, do as follows:
> * <pre>
> * getImage().add(newItem);
> * </pre>
> *
> *
> * <p>
> * Objects of the following type(s) are allowed in the list
> * {@link DataHandler }
> *
> *
> */
> public List<DataHandler> getImage() {
> if (image == null) {
> image = new ArrayList<DataHandler>();
> }
> return this.image;
> }
> }
> The client code will look like:
> void setOutputImage(ImageDepot imgin, ImageDepot imgout) throws
> Exception {
> List<DataHandler> imglist = imgin.getImage();
> try {
> DataHandler img = null;
> // traverse each of the image
> for (DataHandler img : imglist) {
> if (img != null) {
> File f = new File(msgID +
> "_server_image"+ imglist.indexOf(img));
> if (f.exists()) {
> f.delete();
> }
> FileOutputStream fos = new
> FileOutputStream(f);
> img.writeTo(fos);
> imgout.getImage().add(img);
> fos.close();
> }
> }
> } catch (Exception e) {
> System.out.println("Exception caught in MTOMService
> sendImage ...");
> e.printStackTrace(System.out);
> throw e;
> }
> }
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