Am 27.04.2022 um 18:20 schrieb Joakim Erdfelt:
As for your specific concerns, you are likely not initializing the JSP layer
properly (see first link above to jsp examples), and/or are still using older
Configuration (class/object) techniques (see second link above to cookbook
examples).
I've replaced the XML-block concerning the DeploymentManager with the
contents of jetty-deploy.xml and jetty-plus.xml and now I get Webapps
again. Hurray ;-)
But in the process I had to solve a problem where I'm not sure
if it's a PEBKAC or actually a bug in Jetty:
From the plus-xml:
<Call class="org.eclipse.jetty.webapp.Configurations" name="setServerDefault">
<Arg><Ref refid="AdminServer" /></Arg>
<Call name="add">
<Arg>
<Array type="String">
<Item>org.eclipse.jetty.plus.webapp.EnvConfiguration</Item>
<Item>org.eclipse.jetty.plus.webapp.PlusConfiguration</Item>
</Array>
</Arg>
</Call>
</Call>
I've used a different ID, hence the different reference at the beginning.
When I use that in my configuration I get a ClassCastException:
18:17:03.394+0200 [main] WARN - unable to start HTTP-server with config file
etc\admin.xml
java.lang.ClassCastException: class [Ljava.lang.String; cannot be cast to class
org.eclipse.jetty.webapp.Configuration ([Ljava.lang.String; is in module
java.base of loader 'bootstrap'; org.eclipse.jetty.webapp.Configuration is in
unnamed module of loader 'app')
at org.eclipse.jetty.webapp.Configurations.add(Configurations.java:62)
... 17 common frames omitted
Wrapped by: java.lang.reflect.InvocationTargetException: null
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.invokeMethod(XmlConfiguration.java:739)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.call(XmlConfiguration.java:965)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.call(XmlConfiguration.java:928)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:464)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.call(XmlConfiguration.java:931)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:464)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:417)
at
org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.java:319)
at mypackage.MainServer.startHTTPServers(MainServer.java:503)
I've spent most of the day finding the reason of the problem on my side but
the longer I looked the more it appears to me that XmlConfiguration chooses
the wrong method in Configurations. Instead of add(String[]) it seems to
try to call add(Configuration).
I've solved it by changing the configuration to call the method
XmlConfiguration is using anyway.
Thanks and best regards,
Lothar Kimmeringer
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