I am calling the SAP SOAP service from a web servlet in Java. For some reason, SAP gives me an error every time I use special characters in the fields of my query, for example "è" or "à". The SOAP service WSDL is defined in UTF-8, and I set the character encoding accordingly, as shown below. However, I'm not sure if this is the right way. Also note that if I use the SOAP UI (with the same envelope), the request works correctly, so it must be something on the Java side.
URL url = new URL(SOAP_URL);
String authorization = Base64Coder.encodeString(SOAP_USERNAME + ":" + SOAP_PASSWORD);
String envelope = "<soapenv:Envelope xmlns:soapenv='http://schemas.xmlsoap.org/soap/envelope/' xmlns:urn='urn:sap-com:document:sap:soap:functions:mc-style'><soapenv:Header/><soapenv:Body><urn:ZwsMaintainTkt><item>à</item></urn:ZwsMaintainTkt></soapenv:Body></soapenv:Envelope>";
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setReadTimeout(SOAP_TIMEOUT);
con.setRequestMethod("POST");
con.setRequestProperty("Content-type", "text/xml; charset=utf-8");
con.setRequestProperty("SOAPAction", SOAP_ACTION_ZWSMANTAINTKT);
con.setRequestProperty("Authorization", "Basic " + authorization);
con.setDoOutput(true);
con.setDoInput(true);
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(con.getOutputStream());
outputStreamWriter.write(envelope);
outputStreamWriter.close();
InputStream inputStream = con.getInputStream();
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