用windows身份验证，连接SQL Server数据库时，发生了异常。在网上找了，没找到什么有用的结论，特来请教。
这是代码：
private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
private static final String URL="jdbc:sqlserver://localhost;integratedSecurity=true;Database=master";
static{
try {
Class.forName(DRIVER);
System.out.println("获取驱动成功");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
public static Connection getConnection() throws SQLException{
Connection conn=DriverManager.getConnection(URL);
return conn;
}
提示异常：
Exception in thread "main" java.lang.UnsatisfiedLinkError: com.microsoft.sqlserver.jdbc.AuthenticationJNI.GetDNSName(Ljava/lang/String;[Ljava/lang/String;Ljava/util/logging/Logger;)I
at com.microsoft.sqlserver.jdbc.AuthenticationJNI.GetDNSName(Native Method)
at com.microsoft.sqlserver.jdbc.AuthenticationJNI.GetDNSName(AuthenticationJNI.java:109)
at com.microsoft.sqlserver.jdbc.AuthenticationJNI.(AuthenticationJNI.java:63)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:2229)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$000(SQLServerConnection.java:41)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:2220)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:5696)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1715)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1326)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:991)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:827)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1012)
at java.sql.DriverManager.getConnection(DriverManager.java:579)
at java.sql.DriverManager.getConnection(DriverManager.java:243)
at com.util.DBUtilWindows.getConnection(DBUtilWindows.java:30)
at com.util.DBUtilWindows.main(DBUtilWindows.java:65)
