學習記錄：複習

JDBC簡單鏈接資料庫

/**    關閉資源用		*/
		Connection conn = null;
		Statement stmt = null;
		ResultSet rest = null;
		/**		設定url,user,password,sql		*/
		String url = "jdbc:mysql://localhost:3306/kevin?useUnicode=true&characterEncoding=utf-8";
		String user = "root";
		String password = "123456";
		String sql = "select * from blog";
		try
		{
			// 註冊驅動
			Class.forName("com.mysql.jdbc.Driver");
			// 獲得資料庫連結
			conn = DriverManager.getConnection(url, user, password);
			// 獲得Statement
			stmt = conn.createStatement();
			rest = stmt.executeQuery(sql);
			while (rest.next())
			{
				System.out.println(rest.getString("title") + "_" + rest.getString("viceTitle"));
			}
		} catch (Exception e)
		{
			System.err.println("發生異常："+e);
		} finally
		{//關閉資源
			rest.close();
			stmt.close();
			conn.close();
		}
 

關閉資源放在finally中