Oracle数据库连接不上

java.lang.ClassNotFoundException: orcale.jdbc.driver.oracleDriver

at java.net.URLClassLoader$1.run(URLClassLoader.java:200)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:188)

at java.lang.ClassLoader.loadClass(ClassLoader.java:307)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:252)

at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:169)

at util.DBHelper.<clinit>(DBHelper.java:17)

连接异常

java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@localhost:1521:ORCL

at java.sql.DriverManager.getConnection(DriverManager.java:602)

at java.sql.DriverManager.getConnection(DriverManager.java:185)

at util.DBHelper.getConnection(DBHelper.java:25)

at util.DBHelper.main(DBHelper.java:33)

public class DBHelper {

private static final String URL="jdbc:oracle:thin:@localhost:1521:ORCL"; //连接数据库URL地址

private static final String USERNAME="scott"; //用户名

private static final String PASSWORD="tiger"; //密码

private static final String DRIVER="orcale.jdbc.driver.oracleDriver"; //加载数据库驱动

private static  Connection conn=null;

//静态代码块，加载驱动

static{

try {

Class.forName(DRIVER);

} catch (Exception e) {

e.printStackTrace();

}

}

//单例模式，返回数据库连接

public static Connection getConnection()throws Exception{

if(conn==null){

conn=DriverManager.getConnection(URL, USERNAME, PASSWORD);

return conn;

}else{

return conn;

}

}

public static void main(String[] args) {

try {

Connection conn=DBHelper.getConnection();

if(conn!=null){

System.out.println("连接成功");

}

} catch (Exception e) {

e.printStackTrace();

System.out.println("连接异常");

}

}