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.

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

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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.

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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.