kern/src/de/superx/bin/AbstractWebserviceClient.java

package de.superx.bin;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.net.Authenticator.RequestorType;
import java.nio.charset.Charset;
import java.util.logging.Logger;

import javax.xml.soap.MessageFactory;
import javax.xml.soap.MimeHeaders;
import javax.xml.soap.SOAPConnection;
import javax.xml.soap.SOAPConnectionFactory;
import javax.xml.soap.SOAPException;
import javax.xml.soap.SOAPMessage;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import de.memtext.util.DateUtils;
import de.memtext.util.StringUtils;
import de.memtext.util.XMLUtils;

public class AbstractWebserviceClient {
	int pause = 0;
	boolean isDeleteTmpXmlFileWanted = true;

	public AbstractWebserviceClient() {

		Authenticator.setDefault(new Authenticator() {
			@Override
			protected PasswordAuthentication getPasswordAuthentication() {
				if (getRequestorType() == RequestorType.PROXY) {
					String prot = getRequestingProtocol().toLowerCase();
					String host = System.getProperty(prot + ".proxyHost", "");
					String port = System.getProperty(prot + ".proxyPort", "");
					String user = System.getProperty(prot + ".proxyUser", "");
					String password = System.getProperty(prot
							+ ".proxyPassword", "");

					if (getRequestingHost().toLowerCase().equals(
							host.toLowerCase())) {
						if (Integer.parseInt(port) == getRequestingPort()) {
							// Seems to be OK.
							return new PasswordAuthentication(user, password
									.toCharArray());
						}
					}
				}
				return null;
			}
		});
	}

	/**
	 * macht bei Netzwerkproblemen vier Versuche
	 * 
	 * @param soapxml
	 * @param url
	 * @return
	 * @throws Exception
	 */
	protected StringBuffer readSOAP(String soapxml, String url)
			throws Exception {
		int attempt = 1;
		boolean allDone = false;
		StringWriter sw = null;
		Exception exception = null;
		while (allDone == false && attempt < 4) {
			try {
				sw = new StringWriter();
				if (pause > 0) {
					Thread.sleep(pause * 1000);
					// System.out.println("pause "+pause);
				}
				SOAPConnectionFactory soapConnectionFactory = SOAPConnectionFactory
						.newInstance();
				SOAPConnection soapConnection = soapConnectionFactory
						.createConnection();

				SOAPMessage sr = getSoapMessageFromString(soapxml);
				sr.getMimeHeaders().addHeader("SOAPAction",
						"http://sap.com/xi/WebService/soap1.1");

				SOAPMessage soapResponse = soapConnection.call(sr, url);

				// soapResponse.writeTo(System.out);

				Transformer transformer = TransformerFactory.newInstance()
						.newTransformer();
				// optional indenting
				transformer.setOutputProperty(OutputKeys.INDENT, "yes");
				transformer.setOutputProperty(
						"{http://xml.apache.org/xslt}indent-amount", "2");

				// File tmpF = File.createTempFile("soapdata", ".xml");
				transformer.transform(
						new DOMSource(soapResponse.getSOAPPart()),
						new StreamResult(sw));

				soapConnection.close();
				System.gc();
				// if (attempt < 3) throw new RuntimeException("RUntime");
				// StringBuffer result=readFile(tmpF);
				// if (isDeleteTmpXmlFileWanted) tmpF.delete();
				// else System.out.println(" tmp File "+tmpF);
				allDone = true;
			} catch (Exception e) {
				exception = e;
				System.out
						.println(DateUtils.getNowString()
								+ " Aufruf fehlgeschlagen (s. WebserviceLog) - versuche erneut");
				StringWriter swException = new StringWriter();
				PrintWriter pw = new PrintWriter(swException);
				e.printStackTrace(pw);

				Logger.getLogger("wc").severe(
						" Problem bei Aufruf von " + url + "\n" + soapxml
								+ "\n" + swException.toString());
				attempt++;

			}
		}
		if (allDone == false)
			throw exception;
		StringBuffer result = new StringBuffer(sw.toString());
		return result;
	}

	protected File createSoapFile(String soapxml, String url) throws Exception {
		int attempt = 1;
		boolean allDone = false;

		Exception exception = null;
		File tmpF = File.createTempFile("soapdata", ".xml");
		while (allDone == false && attempt < 4) {
			try {
				if (tmpF.exists())
					tmpF.delete();

				if (pause > 0) {
					Thread.sleep(pause * 1000);
					// System.out.println("pause "+pause);
				}
				SOAPConnectionFactory soapConnectionFactory = SOAPConnectionFactory
						.newInstance();
				SOAPConnection soapConnection = soapConnectionFactory
						.createConnection();

				SOAPMessage sr = getSoapMessageFromString(soapxml);
				sr.getMimeHeaders().addHeader("SOAPAction",
						"http://sap.com/xi/WebService/soap1.1");

				SOAPMessage soapResponse = soapConnection.call(sr, url);

				Transformer transformer = TransformerFactory.newInstance()
						.newTransformer();
				// optional indenting
				transformer.setOutputProperty(OutputKeys.INDENT, "yes");
				transformer.setOutputProperty(
						"{http://xml.apache.org/xslt}indent-amount", "2");

				transformer.transform(
						new DOMSource(soapResponse.getSOAPPart()),
						new StreamResult(tmpF));

				soapConnection.close();
				System.gc();
				// if (attempt<3) throw new RuntimeException("runtime");
				allDone = true;
			} catch (Exception e) {
				exception = e;
				System.out
						.println("\n"
								+ DateUtils.getNowString()
								+ " Aufruf fehlgeschlagen (s. WebserviceLog) - versuche erneut");
				StringWriter swException = new StringWriter();
				PrintWriter pw = new PrintWriter(swException);
				e.printStackTrace(pw);

				Logger.getLogger("wc").severe(
						" Problem bei Aufruf von " + url + "\n" + soapxml
								+ "\n" + swException.toString());
				attempt++;

			}
		}
		if (allDone == false)
			throw exception;
		return tmpF;
	}

	private SOAPMessage getSoapMessageFromString(String xml)
			throws SOAPException, IOException {
		MessageFactory factory = MessageFactory.newInstance();
		SOAPMessage message = factory
				.createMessage(
						new MimeHeaders(),
						new ByteArrayInputStream(xml.getBytes(Charset
								.forName("UTF-8"))));
		return message;
	}

	/**
	 * Entferne unnötige Zeichen und EX_JEST Block
	 * 
	 * @param data
	 * @return
	 */
	static String purge(String data) {
		data = XMLUtils.removeTroublesomeCharacters(data);

		data = data.replaceAll("\u20AC", "EUR");

		data = data.replaceAll("\u2013", "-");// dash

		data = data.replaceAll("\u2026", "...");// ...
		data = data.replace('^', ' ');
		data = data.replaceAll("<EX_JEST>(?s).*</EX_JEST>", "");
		data = data.replaceAll("<EX_JEST></EX_JEST>", "");
		data = data.replaceAll("<EX_JEST/>", "");
		return data;
	}

	String adaptURL(String url) {
		String result = url;
		if (System.getProperty("WS_HOST") != null)
			result = url.replaceAll("WS_HOST", System.getProperty("WS_HOST"));
		return result;
	}

	private StringBuffer readFile(File f) throws IOException {
		FileReader fr = new FileReader(f);
		BufferedReader bfr = new BufferedReader(fr);
		String line;
		StringBuffer result = new StringBuffer();
		while ((line = bfr.readLine()) != null) {
			result.append(line + "\n");

		}
		bfr.close();
		fr.close();
		return result;
	}
	
}