使用python獲取存儲在mysql表中的文本文件

Question

在我的項目中，我有一個名為“ uploadedfile”的數據庫，用於將“ demo.txt”文件存儲到mysql數據庫中的mysql表“ file”中。 現在，我想在我的python文件中使用該.txt文件將其轉換為.xml文件。

我的問題是：

如何以文件格式從mysql數據庫表中獲取該.txt文件？

將其轉換為.xml文件后，如何將該文件上傳到同一“ uploadedfile”數據庫中的“ xml”表中，以便PHP可以檢索該文件以進行下載。

Please suggest if there is any way to proceed or is there any alternative way to do this. Please.

My SQL queries explaining the details of my schema are:

mysql> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| uploadedfile       |
+--------------------+
4 rows in set (0.03 sec)

mysql> USE uploadedfile;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> SHOW TABLES;
+------------------------+
| Tables_in_uploadedfile |
+------------------------+
| file                   |
+------------------------+
1 row in set (0.00 sec)

mysql> DESCRIBE file;
+---------+---------------------+------+-----+--------------+----------------+
| Field   | Type                | Null | Key | Default      | Extra          |
+---------+---------------------+------+-----+--------------+----------------+
| id      | int(10) unsigned    | NO   | PRI | NULL         | auto_increment |
| name    | varchar(255)        | NO   |     | Untitled.txt |                |
| mime    | varchar(50)         | NO   |     | text/plain   |                |
| size    | bigint(20) unsigned | NO   |     | 0            |                |
| data    | mediumblob          | NO   |     | NULL         |                |
| created | datetime            | NO   |     | NULL         |                |
+---------+---------------------+------+-----+--------------+----------------+
6 rows in set (0.00 sec)

mysql> SELECT * FROM file where name="fourth.txt";
+----+------------+------------+------+------+---------------------+
| id | name       | mime       | size | data | created             |
+----+------------+------------+------+------+---------------------+
|  3 | fourth.txt | text/plain | 8785 |      | 2016-05-13 10:47:29 |
+----+------------+------------+------+------+---------------------+
1 row in set (0.00 sec)

I need this fourth.txt to get converted to .xml using my python script.
But I am stuck as how to fetch that file from mySQL database.

Please help

Answer 1

您可以使用該文件的相對路徑來獲取它，例如

'folder_name/' + 'file name from DB'

您也可以使用文件的絕對路徑，但是通常認為使用相對路徑是最佳實踐，這樣您的網站就不會綁定到當前部署位置的基本路徑。 例如，它無需修改即可在localhost以及您的公共域上工作