spring - Java: Error creating bean with name 'loadTimeWeaver'? -

i working on maven project every time try deploy war exception below:

error [dispatcherportlet:276] context initialization failed org.springframework.beans.factory.beancreationexception: error creating bean name 'org.springframework.context.weaving.aspectjweavingenabler#0': initialization of bean failed; nested exception org.springframework.beans.factory.beancreationexception: error creating bean name 'loadtimeweaver': initialization of bean failed;  nested exception java.lang.illegalstateexception: classloader [org.apache.catalina.loader.webappclassloader] not provide 'addtransformer(classfiletransforme r)' method. specify custom loadtimeweaver or start java virtual machine spring's agent: -javaagent:org.springframework.instrument.jar         @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.docreatebean(abstractautowirecapablebeanfactory.java:527)         @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.createbean(abstractautowirecapablebeanfactory.java:456)         @ org.springframework.beans.factory.support.abstractbeanfactory$1.getobject(abstractbeanfactory.java:294)         @ org.springframework.beans.factory.support.defaultsingletonbeanregistry.getsingleton(defaultsingletonbeanregistry.java:225)         @ org.springframework.beans.factory.support.abstractbeanfactory.dogetbean(abstractbeanfactory.java:291)         @ org.springframework.beans.factory.support.abstractbeanfactory.getbean(abstractbeanfactory.java:197)         @ org.springframework.context.support.abstractapplicationcontext.getbean(abstractapplicationcontext.java:1097)         @ org.springframework.context.support.abstractapplicationcontext.invokebeanfactorypostprocessors(abstractapplicationcontext.java:661)         @ org.springframework.context.support.abstractapplicationcontext.refresh(abstractapplicationcontext.java:446)         @ org.springframework.web.portlet.frameworkportlet.createportletapplicationcontext(frameworkportlet.java:356)         @ org.springframework.web.portlet.frameworkportlet.initportletapplicationcontext(frameworkportlet.java:294)         @ org.springframework.web.portlet.frameworkportlet.initportletbean(frameworkportlet.java:268)         @ org.springframework.web.portlet.genericportletbean.init(genericportletbean.java:120) 

i don't understand when have in place why error. please checkout declaration in pom.xml

<plugin>     <groupid>org.apache.maven.plugins</groupid>     <artifactid>maven-surefire-plugin</artifactid>     <version>2.4</version>     <configuration>             <forkmode>once</forkmode>             <argline>                  -javaagent:"path\spring-instrument-3.1.0.release.jar"             </argline>             <usesystemclassloader>true</usesystemclassloader>     </configuration> </plugin> 

please guide.

if using tomcat bundle , enable load-time-weaving in tomcat add spring instrument tomcat tomcat's lib directory , following in context.xml inside meta-inf directory of tomcat:

<context path="/test">     <loader loaderclass="org.springframework.instrument.classloading.tomcat.tomcatinstrumentableclassloader"/> </context> 

refer spring docs on tomcat's configuration.

note: configuration tomcat differs based on version.