Error: "com.day.commons.httpclient.impl.ProxyContextListener..."

Last updated on 27 Des 2022 | Also applies to CQ 5.4

Issue

The Error.log shows the following error:

Unexpected error while instantiating listener com.day.commons.httpclient.impl.ProxyContextListener
java.lang.NoSuchMethodError:
com.day.commons.httpclient.impl.ProxySelector$1.setHostName(Ljava/lang/String;)V
at com.day.commons.httpclient.impl.ProxySelector$1.<init>(ProxySelector.java:64)
at com.day.commons.httpclient.impl.ProxySelector.<clinit>(ProxySelector.java:62)
at com.day.commons.httpclient.impl.ProxyWrapper.<clinit>(ProxyWrapper.java:21)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at
com.day.j2ee.servletengine.WebApplication.setupListeners(WebApplication.java:412)
at com.day.j2ee.servletengine.WebApplication.start(WebApplication.java:619)
at com.day.j2ee.servletengine.ServletContainer.start(ServletContainer.java:318)
at com.day.j2ee.servletengine.ServletEngine.start(ServletEngine.java:285)
at com.day.j2ee.server.Server.start(Server.java:227)
at com.day.j2ee.server.Server.main(Server.java:607)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.day.launcher.Bootstrap.run(Bootstrap.java:118)
at com.day.crx.quickstart.Quickstart.run(Quickstart.java:680)
at com.day.crx.quickstart.Main.<init>(Main.java:675)
at com.day.crx.quickstart.Main.main(Main.java:730)

Solution

This error can occur when more that one jar commons-httpclient exists under crx-quickstart/server/runtime/0/_crx/WEB-INF/lib.

Move the jar commons-httpclient-3.0.jar to crx-quickstart. Or, create a directory "BAK" as a sibling to crx-quickstart and move the jar to the BAK directory and restart the server.

It doesn't matter where you put the jar file; it just needs to be moved.