How to upload pdf file on flutter to mysql?

@brandy 

To upload a PDF file from a Flutter application to a MySQL database, you can follow these steps:

1. Create a MySQL database table with a column for storing PDF file data. For example, you can create a table with columns like id, file_name, file_data, etc. Make sure the file_data column is of type BLOB or LONGBLOB.
2. In your Flutter application, use the file_picker package to allow the user to select a PDF file from their device.
3. Once the user selects the PDF file, read the file data and convert it to a Flutter Uint8List object.
4. Use the http package to send a POST request to a server-side API endpoint that will handle the file upload to the MySQL database. Make sure the API endpoint is set up to receive the PDF file data and save it in the database.
5. In your server-side code (e.g., using Node.js or PHP), capture the PDF file data sent by the Flutter application and insert it into the MySQL database table.
6. After successfully uploading the PDF file data to the MySQL database, you can retrieve and display the PDF files in your Flutter application by querying the database and fetching the file data back.

By following these steps, you can allow users to upload PDF files from a Flutter application to a MySQL database.