Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/ProxyServlet.java @ 4488:5041105d2edd
Check if response code from GGInA is 200 OK
Only parse the GGInA response if the status code is 200 OK. This improves the
error message if GGInA is not available and shows the real reason instead of a
JDOM error while parsing the response.
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Wed, 14 Nov 2012 10:36:21 +0100 |
parents | 92239b53823f |
children |
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package de.intevation.flys.client.server; import java.io.InputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Enumeration; import javax.servlet.ServletConfig; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.http.Header; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.StatusLine; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.log4j.Logger; import de.intevation.flys.client.server.auth.User; /** * Implements a Proxy for HTTP Requests */ public class ProxyServlet extends HttpServlet { private static Logger logger = Logger.getLogger(ProxyServlet.class); private String remoteurl; @Override public void init(ServletConfig config) { this.remoteurl = config.getInitParameter("remoteurl"); } @Override public void doPost(HttpServletRequest req, HttpServletResponse resp) { } @Override public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException { HttpClient httpclient = new DefaultHttpClient(); String requesturi = req.getRequestURI(); String query = req.getQueryString(); HttpGet httpget = new HttpGet(this.remoteurl + "?" + query); boolean debug = logger.isDebugEnabled(); for (Enumeration e = req.getHeaderNames(); e.hasMoreElements();) { String name = (String)e.nextElement(); for (Enumeration f = req.getHeaders(name); f.hasMoreElements();) { String value = (String)f.nextElement(); if (debug) { logger.debug( "Adding request header " + name + " : " + value); } httpget.addHeader(name, value); } } HttpResponse response = httpclient.execute(httpget); StatusLine statusline = response.getStatusLine(); if (debug) { logger.debug("Response statuscode " + statusline.getStatusCode()); } resp.setStatus(statusline.getStatusCode()); Header[] headers = response.getAllHeaders(); for(Header header : headers) { if (debug) { logger.debug( "Adding response header " + header.getName() + " : " + header.getValue()); } resp.setHeader(header.getName(), header.getValue()); } HttpEntity entity = response.getEntity(); if (entity != null) { InputStream instream = entity.getContent(); byte [] buf = new byte[4096]; try { OutputStream outstream = resp.getOutputStream(); try { int read; while ((read = instream.read(buf)) >= 0) { outstream.write(buf, 0, read); } outstream.flush(); } finally { outstream.close(); } } finally { instream.close(); } } } private User getUser(HttpServletRequest req) { HttpSession session = req.getSession(); return (User)session.getAttribute("user"); } }