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Re: [jetty-users] Fwd: Re: Forwarding virtual host requests to another server
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I asked about this a week or so ago, but haven't found a solution yet...
I am trying to forward a request to a particular hostname to another
server. I set up a virtual host and can use the hostname to access HTML
pages in the corresponding webapp directory while my other hostname goes
to my original webapp. I'm using Jetty 9.4.6.
I then tried to use a ProxyServlet to forward the request to the other
server. It compiles fine, but:
a) without adding the "proxy" module to the Jetty config, I get
"ProxyServlet: class not found".
b) if I add the "proxy" module to the Jetty config, I get
"HandlerWrapper: class not found" and "Attributes: class not found".
If I use --list-config, it shows that jetty-server-9.4.6.v20170531.jar
and jetty-util-9.4.6.v20170531.jar are in the classpath (both are in
${jetty.base}/lib), and inspecting the two jar files shows that
jetty-server contains HandlerWrapper.class, and jetty-util contains
Attributes.class.
The only thing I can think of is that there something in ProxyServlet
that messes up the classpath. Since the jar files are in the classpath,
I can't think of another explanation why these classes shouldn't be found.
I've tried everything I can think of, and I'm completely out of ideas.
This should be really simple, but it's got me completely baffled. Does
anyone have ANY ideas at all? Please????
Here's the full stacktrace for the "not found" exceptions, in case it helps:
2017-11-15 14:49:19.678:WARN:oejx.XmlConfiguration:main:
java.lang.NoClassDefFoundError:
org/eclipse/jetty/server/handler/HandlerWrapper
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.jetty.util.Loader.loadClass(Loader.java:65)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.newObj(XmlConfiguration.java:761)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.itemValue(XmlConfiguration.java:1236)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.value(XmlConfiguration.java:1141)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.set(XmlConfiguration.java:467)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:412)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:359)
at
org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.java:260)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1501)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1439)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1438)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.jetty.start.Main.invokeMain(Main.java:221)
at org.eclipse.jetty.start.Main.start(Main.java:506)
at org.eclipse.jetty.start.Main.main(Main.java:78)
Caused by:
java.lang.ClassNotFoundException:
org.eclipse.jetty.server.handler.HandlerWrapper
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.jetty.util.Loader.loadClass(Loader.java:65)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.newObj(XmlConfiguration.java:761)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.itemValue(XmlConfiguration.java:1236)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.value(XmlConfiguration.java:1141)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.set(XmlConfiguration.java:467)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:412)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:359)
at
org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.java:260)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1501)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1439)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1438)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.jetty.start.Main.invokeMain(Main.java:221)
at org.eclipse.jetty.start.Main.start(Main.java:506)
at org.eclipse.jetty.start.Main.main(Main.java:78)
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.jetty.start.Main.invokeMain(Main.java:221)
at org.eclipse.jetty.start.Main.start(Main.java:506)
at org.eclipse.jetty.start.Main.main(Main.java:78)
Caused by: java.lang.NoClassDefFoundError:
org/eclipse/jetty/server/handler/HandlerWrapper
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.jetty.util.Loader.loadClass(Loader.java:65)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.newObj(XmlConfiguration.java:761)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.itemValue(XmlConfiguration.java:1236)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.value(XmlConfiguration.java:1141)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.set(XmlConfiguration.java:467)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:412)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:359)
at
org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.java:260)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1501)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1439)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1438)
... 7 more
Caused by: java.lang.ClassNotFoundException:
org.eclipse.jetty.server.handler.HandlerWrapper
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 32 more
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.jetty.start.Main.invokeMain(Main.java:221)
at org.eclipse.jetty.start.Main.start(Main.java:506)
at org.eclipse.jetty.start.Main.main(Main.java:78)
Caused by: java.lang.NoClassDefFoundError:
org/eclipse/jetty/server/handler/HandlerWrapper
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.jetty.util.Loader.loadClass(Loader.java:65)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.newObj(XmlConfiguration.java:761)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.itemValue(XmlConfiguration.java:1236)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.value(XmlConfiguration.java:1141)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.set(XmlConfiguration.java:467)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:412)
at
org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:359)
at
org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.java:260)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1501)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1439)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1438)
... 7 more
Caused by: java.lang.ClassNotFoundException:
org.eclipse.jetty.server.handler.HandlerWrapper
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 32 more
--
John English
