求助大拿:
我按照GitBook 敲butzbook 这个例子, Dao dao = ioc.get(Dao.class); 这一行 会报错

public class MainSetup implements Setup {
@Override
public void init(NutConfig nutConfig) {
Ioc ioc = nutConfig.getIoc();
Dao dao = ioc.get(Dao.class);
// 如果没有createTablesInPackage,请检查nutz版本
Daos.createTablesInPackage(dao, "net.wendal.nutzbook", false);

    // 初始化默认根用户
    if (dao.count(User.class) == 0) {
        User user = new User();
        user.setName("admin");
        user.setPassword("123456");
        user.setCreateTime(new Date());
        user.setUpdateTime(new Date());
        dao.insert(user);
    }
}

@Override
public void destroy(NutConfig nutConfig) {

}

}

18-May-2018 13:02:50.708 严重 [RMI TCP Connection(5)-127.0.0.1] org.apache.catalina.core.StandardContext.filterStart Exception starting filter [nutz]
 org.nutz.mvc.LoadingException: org.nutz.ioc.IocException: IocBean[dao -> dataSource] For object [dataSource] - type:[]
	at org.nutz.mvc.LoadingException$FC$9a86caf9ff5d3b587784fcdf555a4a7d.invoke(LoadingException.java)
	at org.nutz.lang.born.AbstractConstructorBorning.call(AbstractConstructorBorning.java:25)
	at org.nutz.lang.born.ConstructorBorning.born(ConstructorBorning.java:19)
	at org.nutz.lang.born.BornContext.doBorn(BornContext.java:60)
	at org.nutz.lang.Mirror.born(Mirror.java:1010)
	at org.nutz.lang.Lang.wrapThrow(Lang.java:201)
	at org.nutz.mvc.impl.NutLoading.load(NutLoading.java:135)
	at org.nutz.mvc.ActionHandler.<init>(ActionHandler.java:19)
	at org.nutz.mvc.NutFilter._init(NutFilter.java:91)
	at org.nutz.mvc.NutFilter.init(NutFilter.java:69)
	at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:104)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4475)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5117)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:742)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:718)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:703)
	at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1737)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:456)
	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:405)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
	at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401)
	at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:361)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.nutz.ioc.IocException: IocBean[dao -> dataSource] For object [dataSource] - type:[]
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:249)
	at org.nutz.ioc.val.ReferValue.get(ReferValue.java:24)
	at org.nutz.ioc.impl.ObjectMakerImpl.make(ObjectMakerImpl.java:64)
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:240)
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:270)
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:160)
	at net.wendal.nutzbook.MainSetup.init(MainSetup.java:21)
	at org.nutz.mvc.impl.NutLoading.evalSetup(NutLoading.java:278)
	at org.nutz.mvc.impl.NutLoading.load(NutLoading.java:121)
	... 51 more
Caused by: org.nutz.ioc.ObjectLoadException: Wrong type name: 'com.alibaba.druid.pool.DruidDataSource'
	at org.nutz.ioc.IocLoading.E(IocLoading.java:32)
	at org.nutz.ioc.IocLoading.map2iobj(IocLoading.java:55)
	at org.nutz.ioc.loader.map.MapLoader.load(MapLoader.java:80)
	at org.nutz.ioc.loader.combo.ComboIocLoader.load(ComboIocLoader.java:152)
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:194)
	... 59 more
Caused by: java.lang.ClassNotFoundException: com.alibaba.druid.pool.DruidDataSource
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1292)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1121)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:264)
	at org.nutz.lang.Lang.loadClass(Lang.java:2074)
	at org.nutz.ioc.IocLoading.map2iobj(IocLoading.java:51)
	... 62 more

3q 大拿