来自 Eclipse 的 JDBC 连接不起作用，但在 Oracle SQL 开发人员中工作

Question

我正在尝试通过 JDBC 连接到数据库

Class.forName("oracle.jdbc.driver.OracleDriver");
String url="jdbc:oracle:thin:@host_name:port:service_name"; //Changed the host_name, port and service_name for confidentiality
String username = "user_name"; // Changed the user_name
String password = "my_password"; //Changed the password  
Connection conn = DriverManager.getConnection(url, username, password);

得到以下异常

java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
The Connection descriptor used by the client was:

但同时，我可以通过 Oracle SQL 开发人员进行连接。

注意-我的 service_name 由“.”组成和“_”，我的主机名包含“。”

请在这里帮忙！

Answer 1

//Step: 1
Load Driver Class
ex- Class.forName("oracle.jdbc.driver.OracleDriver");

//Step: 2
String url="jdbc:oracle:thin:@ipaddress:portNo of oracle :database name";
ex- String url="jdbc:oracle:thin:@localhost:1521:XE";

//Step: 3
User Name
String username = "user_name";
ex- String username = "system";

//Step: 3
Password
String password = "oracle_db_Password";
ex- String password = "sys123";

//Step:4 
Connection con=DriverManager.getConnection(url,username,password);

Answer 2

以下是从 oracle 文档创建数据源对象的正确方法：

//指定数据源对象

    OracleDataSource ods = new OracleDataSource();
    ods.setURL("jdbc:oracle:thin:@//myhost:1521/orcl");
    ods.setUser("scott");
    ods.setPassword("tiger");
    Connection conn = ods.getConnection();

希望你用对了