Eclipse GWT Maven类路径问题（BoneCP取决于slf4j api）

使用原型

GWTMaven插件2.5.0

创建了一个GWTMaven项目

GWT服务器端依赖于

BoneCP

（一个

ServletContextListener

应该实例化一个连接池）。BoneCP依赖于

slf4j api

。 启动DevMode会抛出NoClassDefFoundError，尽管slf4j api是作为maven依赖项添加的，就像BoneCP一样：

Starting Jetty on port 8888
   [WARN] failed com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload@12271e{/,/home/user/workspace/project/target\moduleName-0.0.1-SNAPSHOT}
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at com.jolbox.bonecp.BoneCPConfig.<clinit>(BoneCPConfig.java:62)
    at my.group.artifact.server.db.ConnectionPool.<init>(ConnectionPool.java:41)
    at my.group.artifact.server.db.ConnectionPool.getInstance(ConnectionPool.java:23)
    at my.group.artifact.server.MyServletContextListener.contextInitialized(MyServletContextListener.java:26)

相关web.xml部分

  <listener>
    <listener-class>
        my.group.artifact.server.MyServletContextListener
    </listener-class>
  </listener>

my.group.artifact.server.MyServletContextListener

整个堆栈跟踪

[WARN] Server class 'com.mysql.jdbc.Driver' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/C:/Documents%20and%20Settings/thomas/.m2/repository/mysql/mysql-connector-java/5.1.27/mysql-connector-java-5.1.27.jar' to the web app classpath for this session
   For additional info see: file:/C:/Documents%20and%20Settings/thomas/Desktop/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.5.1/gwt-2.5.1/doc/helpInfo/webAppClassPath.html
[WARN] Server class 'com.jolbox.bonecp.BoneCPConfig' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/C:/Documents%20and%20Settings/thomas/.m2/repository/com/jolbox/bonecp/0.8.0.RELEASE/bonecp-0.8.0.RELEASE.jar' to the web app classpath for this session
   For additional info see: file:/C:/Documents%20and%20Settings/thomas/Desktop/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.5.1/gwt-2.5.1/doc/helpInfo/webAppClassPath.html
Starting Jetty on port 8888
   [WARN] failed com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload@12271e{/,/home/user/workspace\project\target\moduleName-0.0.1-SNAPSHOT}
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at com.jolbox.bonecp.BoneCPConfig.<clinit>(BoneCPConfig.java:62)
    at my.group.artifact.server.db.ConnectionPool.<init>(ConnectionPool.java:41)
    at my.group.artifact.server.db.ConnectionPool.getInstance(ConnectionPool.java:23)
    at my.group.artifact.server.MyServletContextListener.contextInitialized(MyServletContextListener.java:26)
    at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
    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:672)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1093)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:836)
    at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass(JettyLauncher.java:372)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:366)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
    ... 22 more
   [WARN] failed RequestLogHandler@19e9785
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at com.jolbox.bonecp.BoneCPConfig.<clinit>(BoneCPConfig.java:62)
    at my.group.artifact.server.db.ConnectionPool.<init>(ConnectionPool.java:41)
    at my.group.artifact.server.db.ConnectionPool.getInstance(ConnectionPool.java:23)
    at my.group.artifact.server.MyServletContextListener.contextInitialized(MyServletContextListener.java:26)
    at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
    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:672)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1093)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:836)
    at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass(JettyLauncher.java:372)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:366)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
    ... 22 more
   [WARN] Error starting handlers
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at com.jolbox.bonecp.BoneCPConfig.<clinit>(BoneCPConfig.java:62)
    at my.group.artifact.server.db.ConnectionPool.<init>(ConnectionPool.java:41)
    at my.group.artifact.server.db.ConnectionPool.getInstance(ConnectionPool.java:23)
    at my.group.artifact.server.MyServletContextListener.contextInitialized(MyServletContextListener.java:26)
    at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
    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:672)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1093)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:836)
    at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass(JettyLauncher.java:372)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:366)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
    ... 22 more

[WARN]在web应用程序中找不到服务器类'com.mysql.jdbc.Driver'，但在系统类路径中找到
[警告]将类路径条目“file:/C:/Documents%20和%20设置/thomas/.m2/repository/mysql/mysql连接器java/5.1.27/mysql-connector-java-5.1.27.jar”添加到此会话的web应用程序类路径
有关其他信息，请参见：文件：/C:/Documents%20和%20设置/thomas/Desktop/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.5.1/gwt-2.5.1/doc/helpInfo/webAppClassPath.html
[警告]在web应用程序中找不到服务器类'com.jolbox.bonecp.BoneCPConfig'，但在系统类路径中找到
[警告]将类路径条目“file:/C:/Documents%20和%20设置/thomas/.m2/repository/com/jolbox/bonecp/0.8.0.RELEASE/bonecp-0.8.0.RELEASE.jar”添加到此会话的web应用程序类路径
有关其他信息，请参见：文件：/C:/Documents%20和%20设置/thomas/Desktop/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.5.1/gwt-2.5.1/doc/helpInfo/webAppClassPath.html
在8888港启动码头
[警告]失败的com.google.gwt.dev.shell.jetty.JettyLancher$WebAppContextWithReload@12271e{/，/home/user/workspace\project\target\moduleName-0.0.1-SNAPSHOT}
java.lang.NoClassDefFoundError:org/slf4j/LoggerFactory
位于com.jolbox.bonecp.BoneCPConfig（BoneCPConfig.java:62）
位于my.group.artifact.server.db.ConnectionPool.（ConnectionPool.java:41）
在my.group.artifact.server.db.ConnectionPool.getInstance（ConnectionPool.java:23）中
位于my.group.artifact.server.MyServletContextListener.contextInitialized（MyServletContextListener.java:26）
位于org.mortbay.jetty.handler.ContextHandler.startContext（ContextHandler.java:543）
位于org.mortbay.jetty.servlet.Context.startContext（Context.java:136）
位于org.mortbay.jetty.webapp.WebAppContext.startContext（WebAppContext.java:1220）
位于org.mortbay.jetty.handler.ContextHandler.doStart（ContextHandler.java:513）
位于org.mortbay.jetty.webapp.WebAppContext.doStart（WebAppContext.java:448）
在com.google.gwt.dev.shell.jetty.jettylancher$WebAppContextWithReload.doStart（jettylancher.java:468）
位于org.mortbay.component.AbstractLifeCycle.start（AbstractLifeCycle.java:39）
位于org.mortbay.jetty.handler.HandlerWrapper.doStart（HandlerWrapper.java:130）
位于org.mortbay.jetty.handler.RequestLogHandler.doStart（RequestLogHandler.java:115）
位于org.mortbay.component.AbstractLifeCycle.start（AbstractLifeCycle.java:39）
位于org.mortbay.jetty.handler.HandlerWrapper.doStart（HandlerWrapper.java:130）
位于org.mortbay.jetty.Server.doStart（Server.java:222）
位于org.mortbay.component.AbstractLifeCycle.start（AbstractLifeCycle.java:39）
在com.google.gwt.dev.shell.jetty.jettylancher.start（jettylancher.java:672）
位于com.google.gwt.dev.DevMode.doStartUpServer（DevMode.java:509）
位于com.google.gwt.dev.DevModeBase.startUp（DevModeBase.java:1093）
位于com.google.gwt.dev.DevModeBase.run（DevModeBase.java:836）
位于com.google.gwt.dev.DevMode.main（DevMode.java:311）
原因：java.lang.ClassNotFoundException:org.slf4j.LoggerFactory
在java.net.URLClassLoader$1.run（URLClassLoader.java:366）
在java.net.URLClassLoader$1.run（URLClassLoader.java:355）
位于java.security.AccessController.doPrivileged（本机方法）
位于java.net.URLClassLoader.findClass（URLClassLoader.java:354）
在com.google.gwt.dev.shell.jetty.JettyLancher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass（JettyLancher.java:372）
位于org.mortbay.jetty.webapp.WebAppClassLoader.loadClass（WebAppClassLoader.java:366）
位于org.mortbay.jetty.webapp.WebAppClassLoader.loadClass（WebAppClassLoader.java:337）
... 还有22个
[警告]失败RequestLogHandler@19e9785
java.lang.NoClassDefFoundError:org/slf4j/LoggerFactory
位于com.jolbox.bonecp.BoneCPConfig（BoneCPConfig.java:62）
位于my.group.artifact.server.db.ConnectionPool.（ConnectionPool.java:41）
在my.group.artifact.server.db.ConnectionPool.getInstance（ConnectionPool.java:23）中
位于my.group.artifact.server.MyServletContextListener.contextInitialized（MyServletContextListener.java:26）
位于org.mortbay.jetty.handler.ContextHandler.startContext（ContextHandler.java:543）
位于org.mortbay.jetty.servlet.Context.startContext（Context.java:136）
位于org.mortbay.jetty.webapp.WebAppContext.startContext（WebAppContext.java:1220）
位于org.mortbay.jetty.handler.ContextHandler.doStart（ContextHandler.java:513）
位于org.mortbay.jetty.webapp.WebAppContext.doStart（WebAppContext.java:448）
在com.google.gwt.dev.shell.jetty.jettylancher$WebAppContextWithReload.doStart（jettylancher.java:468）
位于org.mortbay.component.AbstractLifeCycle.start（AbstractLifeCycle.java:39）
位于org.mortbay.jetty.handler.HandlerWrapper.doStart（HandlerWrapper.java:130）
位于org.mortbay.jetty.handler.RequestLogHandler.doStart（RequestLogHandler.java:115）
位于org.mortbay.component.AbstractLifeCycle.start（AbstractLifeCycle.java:39）
位于org.mortbay.jetty.handler.HandlerWrapper.doStart（HandlerWrapper.java:130）
位于org.mortbay.jetty.Server.doStart（Server.java:222）
位于org.mortbay.component.AbstractLifeCycle.start（AbstractLifeCycle.java:39）
在com.google.gwt.dev.shell.jetty.jettylancher.start（jettylancher.java:672）
位于com.google.gwt.dev.DevMode.doStartUpServer（DevMode.java:509）
位于com.google.gwt.dev.DevModeBase.startUp（DevModeBase.java:1093）
位于com.google.gwt.dev.DevModeBase.run（DevModeBase.java:836）
在com
[WARN] Server class 'com.mysql.jdbc.Driver' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/C:/Documents%20and%20Settings/thomas/.m2/repository/mysql/mysql-connector-java/5.1.27/mysql-connector-java-5.1.27.jar' to the web app classpath for this session
   For additional info see: file:/C:/Documents%20and%20Settings/thomas/Desktop/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.5.1/gwt-2.5.1/doc/helpInfo/webAppClassPath.html
[WARN] Server class 'com.jolbox.bonecp.BoneCPConfig' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/C:/Documents%20and%20Settings/thomas/.m2/repository/com/jolbox/bonecp/0.8.0.RELEASE/bonecp-0.8.0.RELEASE.jar' to the web app classpath for this session
   For additional info see: file:/C:/Documents%20and%20Settings/thomas/Desktop/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.5.1/gwt-2.5.1/doc/helpInfo/webAppClassPath.html
Starting Jetty on port 8888
   [WARN] failed com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload@12271e{/,/home/user/workspace\project\target\moduleName-0.0.1-SNAPSHOT}
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at com.jolbox.bonecp.BoneCPConfig.<clinit>(BoneCPConfig.java:62)
    at my.group.artifact.server.db.ConnectionPool.<init>(ConnectionPool.java:41)
    at my.group.artifact.server.db.ConnectionPool.getInstance(ConnectionPool.java:23)
    at my.group.artifact.server.MyServletContextListener.contextInitialized(MyServletContextListener.java:26)
    at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
    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:672)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1093)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:836)
    at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass(JettyLauncher.java:372)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:366)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
    ... 22 more
   [WARN] failed RequestLogHandler@19e9785
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at com.jolbox.bonecp.BoneCPConfig.<clinit>(BoneCPConfig.java:62)
    at my.group.artifact.server.db.ConnectionPool.<init>(ConnectionPool.java:41)
    at my.group.artifact.server.db.ConnectionPool.getInstance(ConnectionPool.java:23)
    at my.group.artifact.server.MyServletContextListener.contextInitialized(MyServletContextListener.java:26)
    at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
    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:672)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1093)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:836)
    at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass(JettyLauncher.java:372)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:366)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
    ... 22 more
   [WARN] Error starting handlers
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at com.jolbox.bonecp.BoneCPConfig.<clinit>(BoneCPConfig.java:62)
    at my.group.artifact.server.db.ConnectionPool.<init>(ConnectionPool.java:41)
    at my.group.artifact.server.db.ConnectionPool.getInstance(ConnectionPool.java:23)
    at my.group.artifact.server.MyServletContextListener.contextInitialized(MyServletContextListener.java:26)
    at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
    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:672)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1093)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:836)
    at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass(JettyLauncher.java:372)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:366)
    at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
    ... 22 more

[WARN] Server class 'com.mysql.jdbc.Driver' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/C:/Documents%20and%20Settings/thomas/.m2/repository/mysql/mysql-connector-java/5.1.27/mysql-connector-java-5.1.27.jar' to the web app classpath for this session
   For additional info see: file:/C:/Documents%20and%20Settings/thomas/Desktop/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.5.1/gwt-2.5.1/doc/helpInfo/webAppClassPath.html
[WARN] Server class 'com.jolbox.bonecp.BoneCPConfig' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/C:/Documents%20and%20Settings/thomas/.m2/repository/com/jolbox/bonecp/0.8.0.RELEASE/bonecp-0.8.0.RELEASE.jar' to the web app classpath for this session
   For additional info see: file:/C:/Documents%20and%20Settings/thomas/Desktop/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.5.1/gwt-2.5.1/doc/helpInfo/webAppClassPath.html