ingo@782: package de.intevation.flys.client.server; ingo@782: ingo@782: import java.io.InputStream; ingo@782: import java.io.IOException; ingo@782: import java.io.OutputStream; ingo@782: ingo@782: import org.w3c.dom.Document; ingo@782: import org.w3c.dom.Element; ingo@782: ingo@1367: import org.apache.log4j.Logger; ingo@1367: ingo@782: import javax.servlet.http.HttpServlet; ingo@782: import javax.servlet.http.HttpServletRequest; ingo@782: import javax.servlet.http.HttpServletResponse; ingo@782: ingo@782: import de.intevation.artifacts.common.ArtifactNamespaceContext; ingo@782: import de.intevation.artifacts.common.utils.XMLUtils; ingo@782: ingo@782: import de.intevation.artifacts.httpclient.exceptions.ConnectionException; ingo@782: import de.intevation.artifacts.httpclient.http.HttpClient; ingo@782: import de.intevation.artifacts.httpclient.http.HttpClientImpl; ingo@782: import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler; ingo@782: ingo@782: ingo@782: /** ingo@782: * @author Ingo Weinzierl ingo@782: */ ingo@782: public class DistanceInfoXML ingo@782: extends HttpServlet ingo@782: { ingo@1367: private static final Logger logger = Logger.getLogger(DistanceInfoXML.class); ingo@1367: ingo@1367: ingo@782: public static final String ERROR_NO_DISTANCEINFO_FOUND = ingo@782: "error_no_distanceinfo_found"; ingo@782: ingo@782: ingo@782: public void doGet(HttpServletRequest req, HttpServletResponse resp) { ingo@1367: logger.info("DistanceInfoXML.doGet"); ingo@782: ingo@782: String river = req.getParameter("river"); ingo@782: String url = req.getParameter("server"); ingo@782: String filter = req.getParameter("filter"); ingo@782: ingo@782: Document doc = XMLUtils.newDocument(); ingo@782: ingo@782: XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( ingo@782: doc, ingo@782: ArtifactNamespaceContext.NAMESPACE_URI, ingo@782: ArtifactNamespaceContext.NAMESPACE_PREFIX); ingo@782: ingo@782: Element riverEl = ec.create("river"); ingo@782: riverEl.setTextContent(river); ingo@782: ingo@782: doc.appendChild(riverEl); ingo@782: ingo@782: if (filter != null && filter.length() > 0) { ingo@782: Element typeEl = ec.create("filter"); ingo@782: typeEl.setTextContent(filter); ingo@782: ingo@782: riverEl.appendChild(typeEl); ingo@782: } ingo@782: ingo@782: HttpClient client = new HttpClientImpl(url); ingo@782: ingo@782: try { ingo@782: InputStream in = (InputStream) client.callService( ingo@782: url, "distanceinfo", doc, new StreamResponseHandler()); ingo@782: ingo@782: OutputStream out = resp.getOutputStream(); ingo@782: ingo@782: byte[] b = new byte[4096]; ingo@782: int i; ingo@782: while ((i = in.read(b)) >= 0) { ingo@782: out.write(b, 0, i); ingo@782: } ingo@782: ingo@782: out.flush(); ingo@782: out.close(); ingo@782: } ingo@782: catch (ConnectionException ce) { ingo@1367: logger.error(ce, ce); ingo@782: } ingo@782: catch (IOException ioe) { ingo@1367: logger.error(ioe, ioe); ingo@782: } ingo@782: } ingo@782: } ingo@782: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :