Если вы знаете запрос, вы можете использовать java.net.HttpURLConnection
String soapXml = "";// your request_xml_in_question
java.net.URL url = new java.net.URL("your_Service_url");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
// Set the necessary header fields
conn.setRequestProperty("SOAPAction", "your_Service_url");
conn.setDoOutput(true);
// Send the request
java.io.OutputStreamWriter wr = new java.io.OutputStreamWriter(conn.getOutputStream());
wr.write(soapXml);
wr.flush();
// Read the response
java.io.BufferedReader rd = new java.io.BufferedReader(new java.io.InputStreamReader(conn.getInputStream()));
String line;
while ((line = rd.readLine()) != null) {
System.out.println(line);
}