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Solution to servlet. INIT () for servlet DWR-invoker threw exception when running DWR

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Solution to servlet. INIT () for servlet DWR-invoker threw exception during DWR running

The error message is as follows:

Javax. servlet. servletexception: servlet. INIT () for servlet DWR-invoker threw exception

Org. Apache. Catalina. Valves. errorreportvalve. Invoke (errorreportvalve. Java: 102)

Org. Apache. Catalina. connector. coyoteadapter. Service (coyoteadapter. Java: 286)

Org. Apache. Coyote. http11.http11processor. Process (http11processor. Java: 844)

Org. Apache. Coyote. http11.http11protocol $ http11connectionhandler. Process (http11protocol. Java: 583)

Org.apache.tomcat.util.net. jioendpoint $ worker. Run (jioendpoint. Java: 447)

Java. Lang. thread. Run (unknown source)

Root Cause

Java. Lang. noclassdeffounderror: ORG/Apache/commons/logging/logfactory

Org. directwebremoting. dwrp. pollhandler. <clinit> (pollhandler. Java: 382)

Java. Lang. Class. forname0 (native method)

Java. Lang. Class. forname (unknown source)

Org. directwebremoting. impl. containerutil. Class $ (containerutil. Java: 97)

Org. directwebremoting. impl. containerutil. setupdefaults (containerutil. Java: 150)

Org. directwebremoting. impl. containerutil. setupdefaultiner iner (containerutil. Java: 125)

Org. directwebremoting. servlet. dwrservlet. INIT (dwrservlet. Java: 73)

Org. Apache. Catalina. Valves. errorreportvalve. Invoke (errorreportvalve. Java: 102)

Org. Apache. Catalina. connector. coyoteadapter. Service (coyoteadapter. Java: 286)

Org. Apache. Coyote. http11.http11processor. Process (http11processor. Java: 844)

Org. Apache. Coyote. http11.http11protocol $ http11connectionhandler. Process (http11protocol. Java: 583)

Org.apache.tomcat.util.net. jioendpoint $ worker. Run (jioendpoint. Java: 447)

Java. Lang. thread. Run (unknown source)

Root Cause

Java. Lang. classnotfoundexception: org. Apache. commons. Logging. logfactory

Org. Apache. Catalina. loader. webappclassloader. loadclass (webappclassloader. Java: 1360)

Org. Apache. Catalina. loader. webappclassloader. loadclass (webappclassloader. Java: 1206)

Java. Lang. classloader. loadclassinternal (unknown source)

Org. directwebremoting. dwrp. pollhandler. <clinit> (pollhandler. Java: 382)

Java. Lang. Class. forname0 (native method)

Java. Lang. Class. forname (unknown source)

Org. directwebremoting. impl. containerutil. Class $ (containerutil. Java: 97)

Org. directwebremoting. impl. containerutil. setupdefaults (containerutil. Java: 150)

Org. directwebremoting. impl. containerutil. setupdefaultiner iner (containerutil. Java: 125)

Org. directwebremoting. servlet. dwrservlet. INIT (dwrservlet. Java: 73)

Org. Apache. Catalina. Valves. errorreportvalve. Invoke (errorreportvalve. Java: 102)

Org. Apache. Catalina. connector. coyoteadapter. Service (coyoteadapter. Java: 286)

Org. Apache. Coyote. http11.http11processor. Process (http11processor. Java: 844)

Org. Apache. Coyote. http11.http11protocol $ http11connectionhandler. Process (http11protocol. Java: 583)

Org.apache.tomcat.util.net. jioendpoint $ worker. Run (jioendpoint. Java: 447)

Java. Lang. thread. Run (unknown source)

**************************************** **************************************** **************************************** *********

Solution: compile, which contains this package, then you put the commons-logging-1.0.4.jar package under your web-INF lib folder, and then run try

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