这是啥子问题

org.nutz.ioc.IocException: org.nutz.lang.born.BorningException: Fail to born 'org.nutz.dao.impl.NutDao'
 by args: [
  @(org.apache.commons.dbcp.BasicDataSource@322a0c0d)] becasue:
Cannot create PoolableConnectionFactory (Communications link failure

Last packet sent to the server was 0 ms ago.) || Args Error or Abstract Class ?

	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at org.nutz.lang.born.ConstructorBorning.born(ConstructorBorning.java:16)
	at org.nutz.lang.born.BornContext.doBorn(BornContext.java:60)
	at org.nutz.lang.Mirror.born(Mirror.java:927)
	at org.nutz.lang.Lang.wrapThrow(Lang.java:164)
	at org.nutz.ioc.impl.ObjectMakerImpl.make(ObjectMakerImpl.java:105)
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:185)
	at org.nutz.ioc.val.ReferValue.get(ReferValue.java:24)
	at org.nutz.ioc.weaver.FieldInjector.inject(FieldInjector.java:23)
	at org.nutz.ioc.weaver.DefaultWeaver.fill(DefaultWeaver.java:56)
	at org.nutz.ioc.impl.ObjectMakerImpl.make(ObjectMakerImpl.java:96)
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:185)
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:203)
	at org.nutz.ioc.impl.NutIoc.get(NutIoc.java:137)
	at org.nutz.mock.NutTestRunner.createTest(NutTestRunner.java:71)
	at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:266)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:263)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.nutz.mock.NutTestRunner.runChild(NutTestRunner.java:33)
	at org.nutz.mock.NutTestRunner.runChild(NutTestRunner.java:14)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.nutz.lang.born.BorningException: Fail to born 'org.nutz.dao.impl.NutDao'
 by args: [
  @(org.apache.commons.dbcp.BasicDataSource@322a0c0d)] becasue:
Cannot create PoolableConnectionFactory (Communications link failure

Last packet sent to the server was 0 ms ago.) || Args Error or Abstract Class ?
	at org.nutz.lang.born.ConstructorBorning.born(ConstructorBorning.java:19)
	at org.nutz.ioc.weaver.DefaultWeaver.born(DefaultWeaver.java:67)
	at org.nutz.ioc.impl.ObjectMakerImpl.make(ObjectMakerImpl.java:76)
	... 26 more
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure

Last packet sent to the server was 0 ms ago.)
	at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1225)
	at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
	at org.nutz.trans.Trans.getConnectionAuto(Trans.java:252)
	at org.nutz.dao.jdbc.Jdbcs.getExpert(Jdbcs.java:100)
	at org.nutz.dao.impl.DaoSupport.setDataSource(DaoSupport.java:154)
	at org.nutz.dao.impl.NutDao.<init>(NutDao.java:109)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at org.nutz.lang.born.ConstructorBorning.born(ConstructorBorning.java:16)
	... 28 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Last packet sent to the server was 0 ms ago.
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
	at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
	at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
	at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:294)
	at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1247)
	at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1221)
	... 38 more
Caused by: java.net.ConnectException: Connection timed out: connect
	at java.net.DualStackPlainSocketImpl.connect0(Native Method)
	at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:579)
	at java.net.Socket.connect(Socket.java:528)
	at java.net.Socket.<init>(Socket.java:425)
	at java.net.Socket.<init>(Socket.java:241)
	at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:253)
	at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:280)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2026)
	... 51 more


Process finished with exit code -1