win7下，hadoop本地库无法加载问题

2015-04-24 08:59:50,927 [main] WARN  [org.apache.hadoop.util.NativeCodeLoader] - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

2015-04-24 09:53:58,462 [main] DEBUG [org.apache.hadoop.util.NativeCodeLoader] - Trying to load the custom-built native-hadoop library...
2015-04-24 09:53:58,472 [main] DEBUG [org.apache.hadoop.util.NativeCodeLoader] - Failed to load native-hadoop with error: java.lang.UnsatisfiedLinkError: no hadoop in java.library.path
2015-04-24 09:53:58,472 [main] DEBUG [org.apache.hadoop.util.NativeCodeLoader] - java.library.path=C:\Program Files\Java\jdk1.7.0_67\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/MyEclipse/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/jre/bin/client;C:/MyEclipse/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/jre/bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\MySQL\MySQL Server 5.5\bin;C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files\Java\jdk1.7.0_67/bin;D:\apache-maven-3.2.1/bin;$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin;.
2015-04-24 09:53:58,472 [main] WARN  [org.apache.hadoop.util.NativeCodeLoader] - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable