JDBC鏈接的四個步驟

1.加載驅動程序 Class.forName("oracle.jdbc.driver.OracleDriver"); 2. 創建鏈接 Connection conn = DriverMananger.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","用戶名","密碼"); 3. 執行查詢 4. 關閉數據庫鏈接 ==============實際

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