如何连接oracle 11g r1数据库

我想连接oracle数据库与我的java程序使用eclipse IDE，我已经将JDBC驱动程序ojdbc6.jar添加到类路径中。如何连接oracle 11g r1数据库

am使用：数据库是：Oracle 11g r1企业版。操作系统：windows 7 64bit。 JDK版本：1.7.0。

我在浏览器中使用url作为“localhost：1158”进行了测试，它打开了oracle登录页面，并成功使用用户名和密码登录为“SYSTEM”和“12345”，与我的代码相同，但尝试运行java程序获取异常。

我的测试数据库连接，Java程序是：

import java.sql.Connection; 
import java.sql.DriverManager; 
import java.sql.SQLException; 

public class Connect 
{ 
    public static void main(String[] args) { 
     try { 
      Class.forName("oracle.jdbc.OracleDriver"); 
      Connection con = DriverManager.getConnection("jdbc:oracle:thin:@//localhost:1158:v$instance","SYSTEM","12345"); 
      System.out.println("connected.."+con); 
     } catch (ClassNotFoundException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (SQLException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

    } 

}

例外是：

java.sql.SQLException: The Network Adapter could not establish the connection 
    at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70) 
    at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133) 
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:199) 
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:480) 
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:413) 
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:508) 
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:203) 
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33) 
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:510) 
    at java.sql.DriverManager.getConnection(Unknown Source) 
    at java.sql.DriverManager.getConnection(Unknown Source) 
    at abhishek.Connect.main(Connect.java:12) 
Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection 
    at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:328) 
    at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:421) 
    at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:630) 
    at oracle.net.ns.NSProtocol.connect(NSProtocol.java:206) 
    at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:966) 
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:292) 
    ... 7 more 
Caused by: java.net.UnknownHostException: //localhost 
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source) 
    at java.net.PlainSocketImpl.connect(Unknown Source) 
    at java.net.SocksSocketImpl.connect(Unknown Source) 
    at java.net.Socket.connect(Unknown Source) 
    at java.net.Socket.connect(Unknown Source) 
    at java.net.Socket.<init>(Unknown Source) 
    at java.net.Socket.<init>(Unknown Source) 
    at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:127) 
    at oracle.net.nt.ConnOption.connect(ConnOption.java:126) 
    at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:306) 
    ... 12 more

谁能告诉我什么是错的我都没有和异常的意义。

来源

2013-02-17 user1652549