Is anyone else having trouble with Tomcat 4?

[mi...@honeywell.com]

Everytime I try to switch a webapp to Tomcat 4, I get exceptions.  Since it
works on Tomcat 3 I usually just switch back and don't investigate too much.
So, I'm just wondering if anyone else has these problems, and if so
...what's the problem?

The most common exception I see is:

2002-03-24 00:52:09 StandardWrapperValve[jsp]: Servlet.service() for servlet
jsp threw exception
java.lang.IllegalStateException
	at
org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:1
59)
	at
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:166)
	at
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:158)
	at
org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:205)
	at
org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:176)
	at
org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFacto
ryImpl.java:198)
	at
org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.j
ava:193)
	at org.apache.jsp.welcome$jsp._jspService(welcome$jsp.java:149)
	at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
va:202)
	at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:243)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:201)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164
)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:170)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:163)
	at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
	at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
1011)
	at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106
)
	at java.lang.Thread.run(Thread.java:484)

Thanks, Mike Witt

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