Ausgabestrom bereits Erhalten
Ich bin mit dem JFree-chart.
Dann endlich bekomme ich die exception bei Verwendung der
Java-Datei:
ChartUtilities.writeChartAsPNG(response.getOutputStream(), chart,
1150, 450);Jsp-Datei:
<img src="${pageContext.request.contextPath}/weeklyDlvyInstancesDashboardReportPost.do?method=generateParetoInstanceBasedChart" alt="Graph" width="100%" height="450" border="0"/></br>Server:
IBM Webshpere 6.0.1
Diagramm funktioniert gut. Aber die Konsole zeigt den Fehler
[11/22/12 18:31:28:243 IST] 0000002f ServletWrappe E SRVE0068E: Uncaught exception thrown in one of the service methods of the servlet: /jsp/layout/layout.jsp. Exception thrown : java.lang.IllegalStateException: SRVE0199E: OutputStream already obtained
at com.ibm.ws.webcontainer.srt.SRTServletResponse.getWriter(SRTServletResponse.java:601)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:196)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:184)
at org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:240)
at org.apache.struts.tiles.taglib.InsertTag$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());
}, Was ich will:
Wie kann ich vermeiden, dass der Fehler in der Konsole ? Bitte Geben Sie mir den Vorschlag. Vielen Dank im Voraus.
- Kann man den code dieser stream-Operationen in java und JSP?
- ok ashwin..ich werde in zwei Minuten..
- Wo sind Sie die Initialisierung der Ausgabestrom und inputstream in dies?
- ich bin nicht intialized überall.Ist das zwingend erforderlich, um intialized
- Ist dies der einzige Ort, wo Sie mit Antwort.getOutputStream() in der java-Datei? - ChartUtilities.writeChartAsPNG(response.getOutputStream(), Grafik, 1150, 450); Oder verwenden Sie es mehr als einmal?
- warten Sie, ich überprüfen und Sie wissen lassen, dass
- ich verwende nicht überall...bis die java-Datei
- u bekam das Problem
- Nein, aber in der Regel bekommen Sie so einen Fehler, wenn Sie zwei Instanzen der Ausgabestrom. Ich bin mir auch nicht sicher.
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Lesen http://www.coderanch.com/t/55147/Struts/OutputStream-obtained-error-generating-pdf.
Ich hatte das gleiche problem, aber in meinem Fall habe ich nicht brauchen, JSP - /Java-Seite als Antwort.
Verwendet habe ich:
Im Umgang mit der servlet-request kann man nur einmal bekommen, den Ausgabestrom (für binäre Daten) oder Writer (text).
Den Fehler zeigt an, dass ein zweiter Versuch gemacht wurde. Dies könnte in der Regel geschieht in einer JSP-wenn der output wird verdoppelt: Ihren binären Bilddaten und der JSP selbst; zum Beispiel ein Zeilenumbruch nach der letzten
%>.Hier scheint es, dass ein tag ist, wollte geschrieben werden. Vielleicht wird eine Rückkehr fehlt.
Insbesondere ist darauf zu achten schreiben einen HTTP-header
setContentType("application/png")und so.