java之採用JDBC鏈接Oracle

動力節點筆記

 

import java.sql.*;

public class QueryTest01 {
    public static void main(String[] args) {
        //第一步，加載數據庫驅動，不一樣的數據庫驅動程序不同
        Class.forName("Oracle.jdbc.driver.OracleDriver");
        //第二部，獲得數據庫鏈接
        //tring dburl = "jdbc:oracle:thin:@localhost:1521:orcl";
        //String dburl = "jdbc:oracle:thin:@192.168.21.1:1521:orcl";
        String dburl = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
        String userName = "system";
        String password = "wanwan";
        Connection conn = DriverManager.getConnection(dburl, userName, password);
    }
}

/*
F:\動力節點Java\王勇——成績管理系統\project\jdbc>javac *.java
QueryTest.java:6: 未報告的異常 java.lang.ClassNotFoundException；必須對其進行捕
捉或聲明以便拋出
                Class.forName("Oracle.jdbc.driver.OracleDriver");
                             ^
QueryTest.java:13: 未報告的異常 java.sql.SQLException；必須對其進行捕捉或聲明以
便拋出
                Connection conn = DriverManager.getConnection(dburl, userName, p
assword);
                                                             ^
2 錯誤
*/

 

 

import java.sql.*;

public class QueryTest02 {
    public static void main(String[] args) {
        Connection conn = null;
        try {
            //第一步，加載數據庫驅動，不一樣的數據庫驅動程序不同
            Class.forName("oracle.jdbc.driver.OracleDriver");
            //第二部，獲得數據庫鏈接
            String dburl = "jdbc:oracle:thin:@localhost:1521:orcl";
            //String dburl = "jdbc:oracle:thin:@192.168.21.1:1521:orcl";
            //String dburl = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
            String userName = "system";
            String password = "wanwan";
            conn = DriverManager.getConnection(dburl, userName, password);
            System.out.println(conn);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            if (conn != null) {

                try {
                    conn.close();
                } catch(SQLException e) {

                }
            }
        }
    }
}