Encoding Problems: Java Client, Axis and SAP Webservice Call

[Former Member]

I have a problem with encoding, in my case with "German Umlaute" (öäüÖÄÜ).

I have a Java Client (Eclipse Rich Client).

With Axis 1.2.1 (wsdl2java) I was generating the classes to access the SAP Webservices.

(The SAP-WS Server provides me the *.wsdl file).

On the client side I am using JaxB (JAXB Reference Implementation 1.0.4 from jwsdp-1.5) to generate an XML String from Model-Objects (marshall).

I try it with the two marshaller Methods:

- "ByteArrayOutputStream" = UTF-8 Encoded (marshaller.marshal(obj, byteArrayOutputStream);)

- "StringWriter" = Plain text (marshaller.marshal(obj, stringWriter);)

The German Umlaute in the marshalled string looks like this:

- ByteArrayOutputStream: Ä=Ä / ä=ä / Ö=Ö / ö=ö / Ü=Ãœ / ü=ü

- StringWriter: Ä=Ä / ä=ä ....

Then I send the string through the Axis generated classes to the SAP Server. (The XML string is an parameter of an Webservice Method/Call)

I debuged the Axis Layer (Soap Envelop) and I saw that the SAOP encodes my String to be able to sended it over the net.

Axis encodes my string like this:

- on the ByteArrayOutputStream String

Ä(Ä) -> Ä

ä(ä) -> ä

Ö(Ö) -> Ö

ö(ö) -> ö

Ãœ(Ü) -> Ãœ

ü(ü) -> zu ü

- on the StringWriter String

ä -> ä

Ä -> Ä

ö -> ö

Ö -> Ö

ü -> ü

Ü -> Ü

My problem is on the Server Side; The SAP Developers assert that my encoding is not right.

The character they become are wrong. They cannot handle my string, and cannot save the "German Umlauts"

What I am doing wrong, or what are they doing wrong?

Is there something special that I missed in my WebService Call procedure?

Is this the wrong way to access SAP Webservices from Java? Can this be so complicated?

Thank you.

[angel_dichev]

Hi,

check you message in binary format, probably your writer has corrupted the UTF-8 encoding localy at the client side

Check in binary/hex format what are the umlauts' codes:

in UTF-8 they suppose to be:

ö - c3 b6

ä - c3 a4

ü - c3 bc

Ö - c3 96

Ä - c3 84

Ü - c3 9c

Regards, Angel

[Former Member]

Hi,

I don't think that the UTF is corrupted, I think the problem is that I encode the String two times. That means:

- the JaxB marshaller makes from Ä -> Ä (ByteArrayOutputStream)

- soap/axis encodes the Ä -> Ä (à is à / „ is „)

This is wrong, because the SAP Server received Ä --> Ä

and on the server side i don't think there is a backward encoding

from Ä --> Ä

I have to use the StringWriter method of JaxB marshaller to generate the string, and I have to passed the generated string without encoding to Axis/Soap.

Soap encodes automatically this String to UTF-8, like:

äÄöÖüÜ = äÄöÖüÜ

If there is a special character like for example „ so Soap encodes this to „

On the Server Side the recevied string will be converted by Soap to the original sended String.

String>>SOAP CLIENT(Encoding)....>Internet>...SOAP SERVER(Decoding)>>String

What do you think?