JDBC连接oracle地址出错

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package com;   import java.sql.*;   import javax.sql.*;   public class Test {     public static void main(String[] args){         Connection conn = null;         Statement stmt = null;         ResultSet rs = null;                   //1。注册驱动         try {             Class.forName("oracle.jdbc.driver.OracleDriver");                           //2。通过驱动管理器建立连接             String url = "jdbc:oracle:thin:@192.168.0.106:1521:dylanfire";             String dbUsername = "scott";             String dbPassword = "dylan";             conn = DriverManager.getConnection(url, dbUsername, dbPassword);                           //3.建立连接对象             stmt = conn.createStatement();                           //4、通过对象传递数据，并返回结果             String sql = "select ename, job, sal, hiredate from emp";             rs = stmt.executeQuery(sql);             while(rs.next()){                 String ename = rs.getString("ename");                 String job = rs.getString("job");                 Double sal = rs.getDouble("sal");                 java.sql.Date hiredate = rs.getDate("hiredate");                 System.out.println(ename + ", " + job + ", " + sal + ", " + hiredate);             }         } catch (ClassNotFoundException e) {             // TODO Auto-generated catch block             e.printStackTrace();         } catch (SQLException e) {             // TODO Auto-generated catch block             e.printStackTrace();         } finally{             try {                 rs.close();             } catch (SQLException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             }             try {                 stmt.close();             } catch (SQLException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             }             try {                 conn.close();             } catch (SQLException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             }         }               }   }

Objective C code?

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oracle服务器的server-name是dylanfire 192.168.0.106是局域网安装oracle数据库的IP。 我通过telnet可以访问到oracle的数据库 不知道为什么通过JAVA就不可以      eclipse给出的异常为： java.sql.SQLException: The Network Adapter could not establish the connection     at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:451)     at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:535)     at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:218)     at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:29)     at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:528)     at java.sql.DriverManager.getConnection(Unknown Source)     at java.sql.DriverManager.getConnection(Unknown Source)     at com.Test.main(Test.java:21) Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection     at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:356)     at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:419)     at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:811)     at oracle.net.ns.NSProtocol.connect(NSProtocol.java:249)     at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1407)     at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:328)     ... 7 more Caused by: java.net.ConnectException: Connection refused: connect     at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)     at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)     at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)     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 oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:138)     at oracle.net.nt.ConnOption.connect(ConnOption.java:120)     at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:334)     ... 12 more Exception in thread "main" java.lang.NullPointerException     at com.Test.main(Test.java:44)       希望各位大侠帮我看看。有什么可能出现这种问题的情况 我一个一个的排查     地址url不对:具体ip的话去掉@，localhost前加@ String url = "jdbc:oracle:thin:@localhost:1521:ORCL";// 127.0.0.1是本机地址，XE是精简版Oracle的默认数据库名  // String url = "jdbc:oracle:thin:192.168.0.167:1521:ORCL";// 127.0.0.1是本机地址，XE是精简版Oracle的默认数据库名