org.gwtopenmaps.openlayers.server
Class GwtOpenLayersProxyServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.gwtopenmaps.openlayers.server.GwtOpenLayersProxyServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class GwtOpenLayersProxyServlet
extends javax.servlet.http.HttpServlet

This is a transparent HTTP proxy written in Java that is similar to the proxy in the OpenLayers examples, which is written in Python. These proxies are used to circumvent browser restrictions on cross-domain requests with Javascript.

To use the proxy you need to 1) configure the proxy servlet in your web.xml and 2) use OpenLayers.setProxyHost to set the url-path to the proxy. If the proxy is configured to listen to the url-pattern '/gwtOpenLayersProxy/*' then the proxy host should be set to 'gwtOpenLayersProxy?targetURL='.

Initial code for this proxy is based upon the following code
see also this networking tutorial

See Also:

Serialized Form

Constructor Summary

GwtOpenLayersProxyServlet()

Method Summary

protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
protected void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GwtOpenLayersProxyServlet

public GwtOpenLayersProxyServlet()

Method Detail

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
                     javax.servlet.http.HttpServletResponse response)
              throws javax.servlet.ServletException,
                     IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

doPost

protected void doPost(javax.servlet.http.HttpServletRequest request,
                      javax.servlet.http.HttpServletResponse response)
               throws javax.servlet.ServletException,
                      IOException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException