同样的代码，ojdbc驱动，在win10下开发环境报这个异常，win7下正常，求解？

部分代码：
 Class.forName("oracle.jdbc.OracleDriver");
 Connection c = = DriverManager.getConnection(  "jdbc:oracle:thin:@127.0.0.1:1521:orcl", name, pass);win10下运行：java.sql.SQLRecoverableException: IO 错误: Connection refused 
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:458)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:546)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:236)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
at java.sql.DriverManager.getConnection(DriverManager.java:571)
at java.sql.DriverManager.getConnection(DriverManager.java:215)
at com.yonyou.test.DBConnection.dbConn(DBConnection.java:26)
at com.yonyou.test.jdbcTest.main(jdbcTest.java:24)
Caused by: oracle.net.ns.NetException: Connection refused 
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:395)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1102)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:320)
... 8 more