连接数据库出现异常

Question

package dmon;import java .sql.Connection;import java.sql.DriverManager;public class Dmon01 {public static void main(String[] args) { try{ Class.forName("oracle.jdbc.driver.OracleDriver"); String url ="jdbc:oracle:thin:@localhost:1521:orcl)"; String user ="scott"; String password ="tiger"; Connection  conn = DriverManager.getConnection(url, user, password); System.out.println("数据库连接成功"); }catch(Exception e){ e.printStackTrace(); }}}java.sql.SQLException: Io 异常: SO Exception was generated at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146) at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255) at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387) at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:414) at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at dmon.Dmon01.main(Dmon01.java:11)

Answer 1

可能是不允许远程连接，试一下给予此账户 connect 权限