java.lang.IllegalArgumentException: A HostProvider may not be empty!

我***真实服了，使用javaAPI   Curator连接zookeeper的时候获得创建结点的时候一直出现这个问题：

报错页面：

java.lang.IllegalArgumentException: A HostProvider may not be empty!

    at org.apache.zookeeper.client.StaticHostProvider.<init>(StaticHostProvider.java:78)
    at org.apache.zookeeper.ZooKeeper.createDefaultHostProvider(ZooKeeper.java:1220)
    at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:938)
    at org.apache.curator.utils.DefaultZookeeperFactory.newZooKeeper(DefaultZookeeperFactory.java:29)
    at org.apache.curator.framework.imps.CuratorFrameworkImpl$2.newZooKeeper(CuratorFrameworkImpl.java:191)
    at org.apache.curator.HandleHolder$1.getZooKeeper(HandleHolder.java:101)
    at org.apache.curator.HandleHolder.getZooKeeper(HandleHolder.java:57)
    at org.apache.curator.ConnectionState.getZooKeeper(ConnectionState.java:99)
    at org.apache.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:141)
    at org.apache.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:596)
    at org.apache.curator.framework.imps.CreateBuilderImpl$17.call(CreateBuilderImpl.java:1189)
    at org.apache.curator.framework.imps.CreateBuilderImpl$17.call(CreateBuilderImpl.java:1166)
    at org.apache.curator.connection.StandardConnectionHandlingPolicy.callWithRetry(StandardConnectionHandlingPolicy.java:64)
    at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:100)
    at org.apache.curator.framework.imps.CreateBuilderImpl.pathInForeground(CreateBuilderImpl.java:1163)
    at org.apache.curator.framework.imps.CreateBuilderImpl.protectedPathInForeground(CreateBuilderImpl.java:603)
    at org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:593)
    at org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:571)
    at org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:47)
    at com.hui.curator.testConnect.testCreate(testConnect.java:48)
    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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$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)

在网上也找了几篇文章但是原因和我的还不一样，然后我怀疑是zookeeper地址错误的原因，然后就在地址字符串前加上http://

但是还是会出错，然后我看见：

为什么这个冒号两个字符串之间有那么大空格？

。。。。。。。。

我就删除用英文状态下的冒号.

...............................

就执行成功了。

以后还是仔细点，今天老师刚说了找bug的一些诀窍，还告诉我们不要想当然的认为某一行代码一定不会出现问题，这样百分之九十就是它的问题。受益匪浅。