Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/ProxyServlet.java @ 5622:b28a6d05e969
Add a new mechanism in mapfish print call to add arbitary data maps
Data properties are identified by starting with mapfish-data
and they are then split in info value pairs where info
can be the description of the information and value the value
of the information to be transported in the data map.
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Tue, 09 Apr 2013 19:04:32 +0200 |
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"); } }