IOException when flush is called from a custom tag

Question

Thanks is advance for the help. I've encountered an oddity in OC4J 10.1.3 Standalone using java 1.5 the 2.4 servlet spec and struts 1.1 and I'm wondering how to resolve it. In our current application we use custom tags to define certain fields. Every tag in our web front end does the same thing.
<pre>
JspWriter writer = pageContext.getOut();
writer.print(sb.toString());
writer.flush();
</pre>
I would understand if the tag was calling a commit then flush and then trying to write to the buffer again. That should raise this exception. We have tags that do the same thing without issue, But some others fail. This is the stack trace we see in the logs.
<pre>
WARN - SpecialReviewTag.doStartTag() IOException:
java.io.IOException: InValid to flush BodyContent: no backing stream behind it
at com.evermind.server.http.EvermindBodyContent.flush(EvermindBodyContent.java:213)
at xxx.xxxx.xxxxx.xxxxxx.receiving.struts.tag.SpecialReviewTag.doStartTag(SpecialReviewTag.java:198)
at receiving.item__receipt__items._jspService(_item__receipt__items.java:897)
at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
at oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:724)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:414)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
</pre>
Here is where the oddity comes into play. The page still renders all the needed information for the user. The problem lies with this exception being flooded into our production logs.
This is the web.xml file being used to define our .jsp configuration
<pre>
<jsp-property-group>
<display-name>Ignore EL</display-name>
<url-pattern>*.jsp</url-pattern>
<el-ignored>true</el-ignored>
<scripting-invalid>false</scripting-invalid>
<is-xml>false</is-xml>
</jsp-property-group>
</pre>
One other not these tags worked fine in the OC4J 10.1.2 Container this happened after the conversion to OC4J 10.1.3
Thanks alot for the help,
Charles
Edited by: CharMow on Feb 11, 2009 5:14 AM

Answer 1

Hi,
I am also getting the same error, when we move to OC4J 10.1.3.
If you find any solution for this please let me know, Thanks in advance.
Following the stack trace..
Can't insert page '/main.jsp' : InValid to flush BodyContent: no backing stream behind it java.io.IOException: InValid to flush BodyContent: no backing stream behind it at com.evermind.server.http.EvermindBodyContent.flush(EvermindBodyContent.java:213) at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:878) at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:473) at layouts.leftLayout._jspService(_leftLayout.java:126) at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:462) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370) at com.evermind.server.http.ServletRequestDispatcher.unprivileged_forward(ServletRequestDispatcher.java:259) at com.evermind.server.http.ServletRequestDispatcher.access$100(ServletRequestDispatcher.java:51) at com.evermind.server.http.ServletRequestDispatcher$2.oc4jRun(ServletRequestDispatcher.java:193) at oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java:283) at com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:198) at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069) at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:274) at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:455) at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:320) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507) at javax.servlet.http.HttpServlet.service(HttpServlet.java:743) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370) at com.evermind.server.http.ServletRequestDispatcher.unprivileged_forward(ServletRequestDispatcher.java:259) at com.evermind.server.http.ServletRequestDispatcher.access$100(ServletRequestDispatcher.java:51) at com.evermind.server.http.ServletRequestDispatcher$2.oc4jRun(ServletRequestDispatcher.java:193) at oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java:283) at com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:198) at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069) at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:274) at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:254) at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:309) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507) at javax.servlet.http.HttpServlet.service(HttpServlet.java:743) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370) at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871) at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453) at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221) at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:122) at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:111) at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260) at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303) at java.lang.Thread.run(Unknown Source)
Thanks,
Jam