OutputStream déjà Obtenu
Je suis en utilisant le JFree graphique.
Puis finalement j'ai accès à l'exception lors de l'utilisation de la
Fichier Java:
ChartUtilities.writeChartAsPNG(response.getOutputStream(), chart,
1150, 450);Fichier Jsp:
<img src="${pageContext.request.contextPath}/weeklyDlvyInstancesDashboardReportPost.do?method=generateParetoInstanceBasedChart" alt="Graph" width="100%" height="450" border="0"/></br>Serveur:
IBM Webshpere 6.0.1
Le graphique fonctionne très bien. Mais la console il montre l'erreur
[11/22/12 18:31:28:243 IST] 0000002f ServletWrappe E SRVE0068E: Uncaught exception thrown in one of the service methods of the servlet: /jsp/layout/layout.jsp. Exception thrown : java.lang.IllegalStateException: SRVE0199E: OutputStream already obtained
at com.ibm.ws.webcontainer.srt.SRTServletResponse.getWriter(SRTServletResponse.java:601)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:196)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:184)
at org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:240)
at org.apache.struts.tiles.taglib.InsertTag$InsertHandler.doEndTag(InsertTag.java:893)
at org.apache.struts.tiles.taglib.InsertTag.doEndTag(InsertTag.java:465)
at com.ibm._jsp._layout._jspx_meth_tiles_insert_0(_layout.java:568)
at com.ibm._jsp._layout._jspService(_layout.java:162)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1146)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1087)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:118)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:848)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:691)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:588)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:525)
at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:122)
at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:232)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:639)
at org.apache.struts.action.RequestProcessor.doInclude(RequestProcessor.java:1110)
at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:292)
at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:271)
at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:332)
at com.ford.it.strutscore.context.ScTilesRequestProcessor.processForwardConfig(ScTilesRequestProcessor.java:863)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:232)
at com.ford.it.strutscore.context.ScTilesRequestProcessor.processRequest(ScTilesRequestProcessor.java:199)
at com.ford.it.strutscore.context.ScTilesRequestProcessor.process(ScTilesRequestProcessor.java:143)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1146)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1087)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
at com.ford.it.persistencecore.context.PcRequestContextFilter.doFilter(PcRequestContextFilter.java:153)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ford.mpl.supergweb.context.I18NUserProfileFilter.doFilterChain(I18NUserProfileFilter.java:139)
at com.ford.mpl.supergweb.context.I18NUserProfileFilter.doFilter(I18NUserProfileFilter.java:79)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ford.it.context.RequestContextFilter.doFilter(RequestContextFilter.java:123)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ford.mpl.supergweb.context.EncodingFilter.doFilter(EncodingFilter.java:50)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:848)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:691)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:588)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:525)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:764)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1478)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:133)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:458)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:387)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1818)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:196)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:751)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:881)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1497)
---- Begin backtrace for Nested Throwables
java.lang.IllegalStateException: SRVE0199E: OutputStream already obtained
at com.ibm.ws.webcontainer.srt.SRTServletResponse.getWriter(SRTServletResponse.java:601)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:196)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:184)
at org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:240)
at org.apache.struts.tiles.taglib.InsertTag$InsertHandler.doEndTag(InsertTag.java:893)
at org.apache.struts.tiles.taglib.InsertTag.doEndTag(InsertTag.java:465)
at com.ibm._jsp._layout._jspx_meth_tiles_insert_0(_layout.java:568)
at com.ibm._jsp._layout._jspService(_layout.java:162)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1146)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1087)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:118)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:848)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:691)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:588)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:525)
at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:122)
at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:232)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:639)
at org.apache.struts.action.RequestProcessor.doInclude(RequestProcessor.java:1110)
at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:292)
at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:271)
at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:332)
at com.ford.it.strutscore.context.ScTilesRequestProcessor.processForwardConfig(ScTilesRequestProcessor.java:863)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:232)
at com.ford.it.strutscore.context.ScTilesRequestProcessor.processRequest(ScTilesRequestProcessor.java:199)
at com.ford.it.strutscore.context.ScTilesRequestProcessor.process(ScTilesRequestProcessor.java:143)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1146)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1087)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
at com.ford.it.persistencecore.context.PcRequestContextFilter.doFilter(PcRequestContextFilter.java:153)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ford.mpl.supergweb.context.I18NUserProfileFilter.doFilterChain(I18NUserProfileFilter.java:139)
at com.ford.mpl.supergweb.context.I18NUserProfileFilter.doFilter(I18NUserProfileFilter.java:79)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ford.it.context.RequestContextFilter.doFilter(RequestContextFilter.java:123)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ford.mpl.supergweb.context.EncodingFilter.doFilter(EncodingFilter.java:50)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:848)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:691)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:588)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:525)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:764)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1478)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:133)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:458)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:387)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1818)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:196)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:751)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:881)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1497)
[11/22/12 18:31:28:368 IST] 0000002f SRTServletRes W WARNING: Cannot set status. Response already committed.
[11/22/12 18:31:28:368 IST] 0000002f SRTServletRes W WARNING: Cannot set header. Response already committed.)JavaPage:
try
{
CategoryDataset dataset1 = createDataSetForInstanceBasedChart();
String instancesCountLabelName = I18nMessageUtil.getMessage(CommonUtil.getLocale(), "label.reports.wdid.instcnt");
JFreeChart chart = ChartFactory.createBarChart(
"", //chart title
"", //domain axis label
instancesCountLabelName, //range axis label
dataset1, //data
PlotOrientation.VERTICAL, //orientation
true, //include legend
true, //tooltips?
false //URLs?
);
//NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
//set the background color for the chart...
chart.setBackgroundPaint(Color.white);
CategoryPlot plot = (CategoryPlot) chart.getPlot();
plot.setBackgroundPaint(Color.lightGray);
/*CategoryDataset dataset2 = createDataset2();
plot.setDataset(1, dataset2);
plot.mapDatasetToRangeAxis(1, 1);*/
CategoryItemRenderer renderer1 = plot.getRenderer();
renderer1.setSeriesItemLabelGenerator(0,new CategoryItemLabelGenerator() {
public String generateRowLabel(final CategoryDataset arg0, final int arg1) {
//TODO Auto-generated method stub
return null;
}
public String generateLabel(final CategoryDataset dataset1,final int series,final int category) {
String result = null;
//CHAPTER 12. ITEM LABELS 91
final Number value = dataset1.getValue(series, category);
if (value != null) {
final double v = value.doubleValue();
if (v > 0) {
result = value.toString(); //could apply formatting here
}
}
return result;
}
public String generateColumnLabel(final CategoryDataset arg0, final int arg1) {
//TODO Auto-generated method stub
return null;
}
});
renderer1.setSeriesItemLabelsVisible(0,true);
System.out.println("+++++++++++++++++++++++++++++++++renderer1" +renderer1);
BarRenderer renderer = (BarRenderer) plot.getRenderer();
renderer.setDrawBarOutline(false);
renderer.setSeriesOutlinePaint(0,Color.BLACK);
renderer.setDrawBarOutline(true);
renderer.setMaximumBarWidth(0.02);
renderer.setSeriesPaint(0,new Color(170, 0, 85));
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!renderer" +renderer);
CategoryAxis domainAxis = plot.getDomainAxis();
domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(.6));
domainAxis.setLabelFont(new Font("Helvetica", Font.BOLD, 14));
domainAxis.setTickLabelFont(new Font("Helvetica", Font.BOLD, 14));
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@domainAxis" +domainAxis);
/*String numOfSupplrs = I18nMessageUtil.getMessage(CommonUtil.getLocale(), "label.rateElement.history.numOfSupplrs");
ValueAxis axis2 = new NumberAxis(numOfSupplrs);
axis2.setLabelFont(new Font("Helvetica", Font.BOLD, 14));
axis2.setTickLabelFont(new Font("Helvetica", Font.PLAIN, 14));
//if(!this.isValueDataZeros)
//axis2.setRange(0,13);
plot.setRangeAxis(1, axis2);*/
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
//if(!this.isNumberDataZeros)
//rangeAxis.setRange(0,90);
//rangeAxis.setTickUnit(new NumberTickUnit(1));
rangeAxis.setLabelFont(new Font("Helvetica", Font.BOLD, 14));
rangeAxis.setTickLabelFont(new Font("Helvetica", Font.PLAIN, 14));
/*LineAndShapeRenderer renderer2 = new LineAndShapeRenderer();
renderer2.setSeriesPaint(0, Color.BLUE);
Start
renderer2.setSeriesItemLabelGenerator(0,new CategoryItemLabelGenerator() {
public String generateRowLabel(final CategoryDataset arg0, final int arg1) {
//TODO Auto-generated method stub
return null;
}
public String generateLabel(final CategoryDataset dataset1,final int series,final int category) {
String result = null;
//CHAPTER 12. ITEM LABELS 91
final Number value = dataset1.getValue(series, category);
if (value != null) {
final double v = value.doubleValue();
if (v > 0) {
result = value.toString(); //could apply formatting here
}
}
return result;
}
public String generateColumnLabel(final CategoryDataset arg0, final int arg1) {
//TODO Auto-generated method stub
return null;
}
});
renderer2.setSeriesItemLabelsVisible(0,true);*/
/* End */
//plot.setRenderer(1, renderer2);
plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
System.out.println("#########################plot" +plot);
ChartUtilities.writeChartAsPNG(response.getOutputStream(), chart,
1150, 450);
log.exiting(CLASS_NAME, METHOD_NAME);
}
catch(Exception writeInstanceBasedParetoChartException)
{
System.out.println("Exception in writeInstanceBasedParetoChartException: "+writeInstanceBasedParetoChartException.getMessage());
}Ce que je veux:
Comment puis-je éviter l'erreur dans la console ? Merci de me Donner la suggestion. Merci à l'Avance.
- Pouvez-vous montrer le code de ces flux d'opérations en java et JSP?
- ok ashwin..je vais l'ajouter dans les deux minutes..
- Où en êtes-vous de l'initialisation de l'outputstream et inputstream dans ce domaine?
- je ne suis pas initialisée n'importe où.Est obligatoire pour initialisée
- Est-ce le seul endroit où vous êtes à l'aide de la réponse.getOutputStream() dans le fichier java? - ChartUtilities.writeChartAsPNG(la réponse.getOutputStream(), graphique, 1150, 450); Ou êtes-vous de l'utiliser plus d'une fois?
- attendez que je vérifie et que vous sachiez que
- je ne suis pas à l'aide de n'importe où...jusqu'à ce que la fichier java
- u got la question
- non, mais en général, vous obtenez une erreur lorsque vous avez deux instances de la outputstream. Je ne suis pas aussi sûr.
Vous devez vous connecter pour publier un commentaire.
Lire http://www.coderanch.com/t/55147/Struts/OutputStream-obtained-error-generating-pdf.
J'ai rencontré le même problème, mais dans mon cas, je n'ai pas besoin de JSP/Java de la page de réponse.
J'ai utilisé:
Dans la manipulation d'un servlet demande, on ne peut que une fois que vous l'OutputStream (pour des données binaires) ou de l'Écrivain (pour le texte).
L'erreur indique qu'une deuxième tentative a été faite. Cela pourrait se produisent habituellement dans une JSP lorsque la sortie est doublé: vos données d'image binaire, et les JSP lui-même; par exemple un saut de ligne après la dernière
%>.Ici, il semble qu'une balise est voulu pour être écrite. Peut-être qu'un retour est manquant.
Surtout prends soin d'écrire un en-tête HTTP
setContentType("application/png")et ces.