15:19:39.711 14531 [main-SendThread(10.x.x.x:2181)] WARN o.a.zookeeper.ClientCnxn - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.lang.ClassCastException: class sun.security.provider.ConfigFile
at java.lang.Class.asSubclass(Class.java:3404)
at javax.security.auth.login.Configuration$2.run(Configuration.java:254)
at javax.security.auth.login.Configuration$2.run(Configuration.java:247)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.Configuration.getConfiguration(Configuration.java:246)
at org.apache.zookeeper.client.ZooKeeperSaslClient.<init>(ZooKeeperSaslClient.java:119)
at org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:949)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1003)
上面的问题是在使用PowerMock测试Zookeeper时候抛出的异常,解决方式是在测试类上添加注解@PowerMockIgnore,由于Mock使用的是自定义类加载器以达到修改字节码的目的,但是对于需要系统类加载器加载却用了Mock的类加载器加载的则会出现ClassCastException异常,需要使用注解告诉PowerMock,哪些类需要让系统类加载器加载。
PowerMockIgnore({"javax.security.*"})
常用的还有
@PowerMockIgnore({"javax.net.ssl.*","javax.management.*", "javax.security.*", "javax.crypto.*"})