1
Advanced JAXRPC
Ye Wu
http://www.ise.gmu.edu/~wuye
SWE 645
Component-based Software Development
sources: Java Web Service Architecture, James McGoven and etc.,
Morgan Kaufmann, Ch 4, 10, 11 (8 and 9 are supporting chapters)
2007-4-17 © Dr. Ye Wu 2
Attachment in JAX-RPC
• How to transfer binary data through JAX-RPC?
– Base64-encoding
• Translate binary to text
• Increase the size by nearly 33%
– SOAP with attachments
2007-4-17 © Dr. Ye Wu 3
SOAP Message – With Attachment
Content-type:text/xml
<?xml verion=1.0>
<SOAP:Envelope>
……
</SOAP:Envelope>
HTTP Message
--MIME_boundary
--MIME_boundary
Content-type:image/jpg
…Image file…
--MIME_boundary
2007-4-17 © Dr. Ye Wu 4
Attachment in SOAP
Javax.xml.transform.source
Javax.mail.internet.MimeMultipart
Java.lang.string
Java.awt.image
Java.awt.image
Text/xml
Multipart/*
Text/plain
Image/jpg
Image/gif
•Javax.activation.DataHandler is automatically sent
As attachment.
•MIME types and Java class mapping.
2007-4-17 © Dr. Ye Wu 5
Developing the Axis service
public class ATServer{
public ATServer() { }
public String UpLoadFile(javax.activation.DataHandler att) {
try {
att.writeTo(new FileOutputStream("ABC"));
} catch (Exception e) {
e.printStackTrace();
return "Error";
}
return "OK";
}
}
2007-4-17 © Dr. Ye Wu 6
Developing the Axis service
QName qn = new QName("YW","DataHandler");
call.registerTypeMapping(DataHandler.class, qn,
org.apache.axis.encoding.ser.JAFDataHandlerSerializerFactory.class,
org.apache.axis.encoding.ser.JAFDataHandlerDeserializerFactory.class);
call.addParameter("inputfile", qn, ParameterMode.IN );
FileDataSource ds = new FileDataSource("ABC");
DataHandler handler = new DataHandler(ds);
call.setReturnType(XMLType.XSD_STRING);
String rts = (String)call.invoke(new Object[]{handler});
