从简单的java连接MSSQLSERVER代码中得到的教训

String sqlUrl = "jdbc:sqlserver://127.0.0.1:1433;databaseName=Test;user=sa;password=sa";

		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;

		try {
			// Establish the connection.
			Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
			conn = DriverManager.getConnection(sqlUrl);

			// Create and execute an SQL statement that returns some data.
			String SQL = "select * from tableName";
			stmt = conn.createStatement();
			rs = stmt.executeQuery(SQL);

			ResultSet excel = readExcel();

			while (excel.next())
				System.out.println(excel.getString(2));

		}
		// Handle any errors that may have occurred.
		catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (rs != null)
				try {
					rs.close();
				} catch (Exception e) {
				}
			if (stmt != null)
				try {
					stmt.close();
				} catch (Exception e) {
				}
			if (conn != null)
				try {
					conn.close();
				} catch (Exception e) {
				}
		}