java.lang.ClassNotFoundException: com.microsoft.sqlserver.JDBC.sqlserverDriver
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at sqltest.J_Jdbc41.main(J_Jdbc41.java:17)
我实在不清楚为啥啊为找不到呀