报错Exception in thread "main" java.lang.NoClassDefFoundError: com/ctc/wstx/io/InputBootstrapper

简单测试伪分布式文件系统HDFS上是否存在某个文件
报错

Exception in thread "main" java.lang.NoClassDefFoundError: com/ctc/wstx/io/InputBootstrapper
	at test.HDFSFileifExist.main()
Caused by: java.lang.ClassNotFoundException: com.ctc.wstx.io.InputBootstrapper
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 1 more

原因是缺少Jar包
引入woodstox-core-5.0.3.jar
路径 /usr/local/hadoop/share/hadoop/common/lib