CODEWITHSUNDEEP
javaweb-servicesjaxbjax-ws
K. Siva Prasad Reddy
K. Siva Prasad Reddy

Reputation: 12375

wsimport tool is converting DataHandler type byte[] in the generated client code

I have a simple WebService developed using JAXWS. I need to upload/download some Files. I have created a Class FileItem with DataHandler a property. The service is running fine.

But when I generated the client stubs using wsimport tool, the FileItem class is having byte[] type property instead of DataHandler type.

How can I customize this behavior so that the generated code also have same DataHandler Type in generated client code?

Upvotes: 3

Views: 4491

Answers (2)

bdoughan
bdoughan

Reputation: 148977

Short Answer

If you specify an xmime:expectedContentTypes on the element that is anything except: image/gif, image/jpeg, text/xml, or application/xml then the generated property will be of type DataHandler.

Long Answer

From Section H.2.1.1 Binding Known Media Type of the JAXB 2.2 specification, below are how mime types correspond to the generated Java types.

MIME Type              Java Type
---------              -------------
image/gif              java.awt.Image
image/jpeg             java.awt.Image
text/xml               javax.xml.transform.Source
application/xml        javax.xml.transform.Source
any other mime type    javax.activation.DataHandler

XML Schema

Below is an XML schema that has many elements of type base64Binary, most of them are qualified with xmime:expectedContentTypes so that we can see the impact on the resulting class generation.

<?xml version="1.0"?>
<xsd:schema
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xmime="http://www.w3.org/2005/05/xmlmime"
    xmlns="http://www.example.com"
    targetNamespace="http://www.example.com">
    <xsd:element name="root">
        <xsd:complexType>
            <xsd:sequence>
                <xsd:element minOccurs="0" name="default" type="xsd:base64Binary"/>
                <xsd:element minOccurs="0" name="imageGif" type="xsd:base64Binary" xmime:expectedContentTypes="image/gif"/>
                <xsd:element minOccurs="0" name="imageJpeg" type="xsd:base64Binary" xmime:expectedContentTypes="image/jpeg"/>
                <xsd:element minOccurs="0" name="textXml" type="xsd:base64Binary" xmime:expectedContentTypes="text/xml"/>
                <xsd:element minOccurs="0" name="applicationXml" type="xsd:base64Binary" xmime:expectedContentTypes="application/xml"/>
                <xsd:element minOccurs="0" name="anythingElse" type="xsd:base64Binary" xmime:expectedContentTypes="anything/else"/>
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>
</xsd:schema>

Root(Generated Class)

Below is the resulting generated class. The resulting property types are byte[], Image, Source, and DataHandler.

package com.example;

import java.awt.Image;
import javax.activation.DataHandler;
import javax.xml.bind.annotation.*;
import javax.xml.transform.Source;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "_default",
    "imageGif",
    "imageJpeg",
    "textXml",
    "applicationXml",
    "anythingElse"
})
@XmlRootElement(name = "root")
public class Root {

    @XmlElement(name = "default")
    protected byte[] _default;
    @XmlMimeType("image/gif")
    protected Image imageGif;
    @XmlMimeType("image/jpeg")
    protected Image imageJpeg;
    @XmlMimeType("text/xml")
    protected Source textXml;
    @XmlMimeType("application/xml")
    protected Source applicationXml;
    @XmlMimeType("anything/else")
    protected DataHandler anythingElse;


    ...
}

Upvotes: 8

Rens Verhage
Rens Verhage

Reputation: 5857

It seems wsimport does not know how your DataHandler objects should be serialized and just assumes you want them as a byte array. Use the right jaxb annotations on your DataHandler class for proper XML serialization.

Upvotes: 0

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