1、问题：java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries

　  解决：在程序中添加hadoop.home.dir设置，如：“System.setProperty("hadoop.home.dir", "D:\\desktop\\hadoop-2.6.0");”，并将winutils.exe拷贝至D:\desktop\hadoop-2.6.0\bin文件夹中