Javax.servlet.ServletException

I've just come onboard with a new team and I am trying to run their project within eclipse using GWT. I know the code is fine, but I keep getting a similar error.

javax.servlet.ServletException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'reportExporterService' defined in ServletContext resource [/WEB-INF/adminportal-config.xml]: Cannot resolve reference to bean 'reportService' while setting bean property 'reportService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'reportService' defined in class path resource [springconfig-service.xml]: Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in class path resource [sprin开发者_开发技巧gconfig-dao.xml]: Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [springconfig-dao.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory

 at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:437)
 at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:256)
 at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
 at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:616)
 at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
 at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
 at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
 at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
 at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:461)
 at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
 at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
 at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
     at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
     at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
 at org.mortbay.jetty.Server.doStart(Server.java:222)
 at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
 at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:565)
 at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:494)
 at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1058)
 at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:800)
 at com.google.gwt.dev.DevMode.main(DevMode.java:304)

Is there a plugin or compaibilty issue that you know of that could be causing this? Assuming the code itself is fine as I'm trying to run a stable release. Thanks for any help.

Looks like your project is missing slf4j jar(s).

It is a Spring bean configuration error: check that all the necessary Spring definitions are correct and that the Spring context xml files are in the right places.

If you are using Eclipse and have dependent projects to your web application, you need to add them to your workspace and have them open.