Chart Export, Gwt, Exception

zdary · November 3, 2011

Hi,

I use fusion chart from withing GWT framework. When I try to export the chart as an image I receive the following exception in a log.

private native void exportNative(String swfId) /*-{

var chart = $doc.getElementById(swfId);

chart.exportChart( { exportFormat : 'PNG'} )

}-*/;

3.11.2011 16:12:02 com.fusioncharts.exporter.generators.ImageGenerator getChartImage

INFO: Creating the Chart image

3.11.2011 16:12:02 com.fusioncharts.exporter.generators.ImageGenerator getChartImage

INFO: Image created successfully

=== 2011-11-03 16:12:02,751 [l0-4] ERROR ProxyHttpServletResponse - Error - getWriter() called on request that has already returned an OutputStream - stack trace for previous getOutputStream() call:

java.lang.Exception

at com.isomorphic.servlet.ProxyHttpServletResponse.getOutputStream(ProxyHttpServletResponse.java:154)

at com.fusioncharts.exporter.resources.FCExporter_IMG.exportOutput(FCExporter_IMG.java:175)

at com.fusioncharts.exporter.servlet.FCExporter.doPost(FCExporter.java:192)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1097)

at com.isomorphic.servlet.CompressionFilter.doFilter(CompressionFilter.java:259)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368)

at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)

at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter. java:54)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter. java:187)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java: 79)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at cz.bcom.smartrise.server.authentication.SpringConcurrentSessionFilter.doFilter(SpringConcurrentSessionFilter.java:68)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)

at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169)

at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)

at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)

at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)

at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)

at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)

at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)

at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)

at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)

at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)

at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)

at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)

at org.mortbay.jetty.Server.handle(Server.java:324)

at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)

at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)

at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)

at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)

at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)

at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)

at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

=== 2011-11-03 16:12:02,751 [l0-4] ERROR ProxyHttpServletResponse - Error - getWriter() called on request that has already returned an OutputStream - stack trace for this getWriter() call:

java.lang.Exception

at com.isomorphic.servlet.ProxyHttpServletResponse.getWriter(ProxyHttpServletResponse.java:168)

at com.fusioncharts.exporter.resources.FCExporter_IMG.exportOutput(FCExporter_IMG.java:259)