我在开发一个应用,用以下代码测试jdbc
String driverName = "oracle.jdbc.driver.OracleDriver"; // 加载JDBC驱动
String dbURL = "jdbc:oracle:thin:@127.0.0.1:1521:orcl"; // 连接服务器和sample
String userName = "wzdjl"; // 默认用户名
String userPwd = "wzdjl"; // 密码
Connection dbConn; try {
Class.forName(driverName);
dbConn = DriverManager.getConnection(dbURL, userName, userPwd);
System.out.println("Connection Successful!"); // 如果连接成功
// 控制台输出Connection
// Successful!
} catch (Exception e) {
e.printStackTrace();
}oracle10g服务器部署在本机上,用pl/sql能练到数据库上,但执行以上代码时抱以下错误:
java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:254)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:386)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:413)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:164)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:752)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at com.dragonsoft.Test.main(Test.java:17)
请高手指教!!!
String driverName = "oracle.jdbc.driver.OracleDriver"; // 加载JDBC驱动
String dbURL = "jdbc:oracle:thin:@127.0.0.1:1521:orcl"; // 连接服务器和sample
String userName = "wzdjl"; // 默认用户名
String userPwd = "wzdjl"; // 密码
Connection dbConn; try {
Class.forName(driverName);
dbConn = DriverManager.getConnection(dbURL, userName, userPwd);
System.out.println("Connection Successful!"); // 如果连接成功
// 控制台输出Connection
// Successful!
} catch (Exception e) {
e.printStackTrace();
}oracle10g服务器部署在本机上,用pl/sql能练到数据库上,但执行以上代码时抱以下错误:
java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:254)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:386)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:413)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:164)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:752)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at com.dragonsoft.Test.main(Test.java:17)
请高手指教!!!
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startup开启实例试试。。