Copy Image from PDF

Question

I'm getting issue while running docker compose up , You can see my docker-compose.yaml file that I wrote for running the web API with MySQL db. I've also attached the error I'm facing currently. It'll be a great help if you can help me in this regard. thanks.

    version: '3'
services:
  app:
    container_name: web_api
    build: .
    ports: 
      - 8080:5000
    restart: on-failure
    volumes:
      - api:/usr/src/app/
    depends_on:
      - webapi-mysql          
    networks:
      - webapi


  webapi-mysql:
    image: mysql:8.0.26
    container_name: db_mysql
    ports: 
      - 3308:3306
    environment: 
      - MYSQL_ROOT_HOST=${DB_HOST} 
      - MYSQL_USER=${DB_USER}
      - MYSQL_PASSWORD=${DB_PASSWORD}
      - MYSQL_DATABASE=${DB_NAME}
      - MYSQL_ROOT_PASSWORD=${DB_PASSWORD}
    volumes:
      - database_mysql:/var/lib/mysql
    networks:
      - webapi

volumes:
  api:
  database_mysql:                  

# Networks to be created to facilitate communication between containers
networks:
  webapi:
    driver: bridge

Error is coming up in my CLI, as follows

Attaching to db_mysql, web_api
db_mysql        | 2021-11-08 13:20:28+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.26-1debian10 started.
db_mysql        | 2021-11-08 13:20:28+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
db_mysql        | 2021-11-08 13:20:28+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.26-1debian10 started.
db_mysql        | 2021-11-08 13:20:28+00:00 [ERROR] [Entrypoint]: MYSQL_USER="root", MYSQL_USER and MYSQL_PASSWORD are for configuring a regular user and cannot be used for the root user
db_mysql        |     Remove MYSQL_USER="root" and use one of the following to control the root user password:
db_mysql        |     - MYSQL_ROOT_PASSWORD
db_mysql        |     - MYSQL_ALLOW_EMPTY_PASSWORD
db_mysql        |     - MYSQL_RANDOM_ROOT_PASSWORD
web_api         | 2021/11/08 13:20:31 dial tcp 127.0.0.1:3306: connect: connection refused
db_mysql exited with code 1
web_api exited with code 1

Solution 1

There are several methods to extract the images from a pdf.

I suggest you try any of the online tools as they are cross platform and do not require installation of any software

http://extract.smallpdf.com/

If you use Linux, try pdfimages http://ubuntugenius.wordpress.com/2012/02/04/how-to-extract-images-from-pdf-documents-in-ubuntulinux/

Windows try http://www.somepdf.com/some-pdf-image-extract.html

OSX has a free trial software here : http://www.iskysoft.com/pdf-converter-mac.html

Solution 2

Try to find a virtual printer that might help you print something as a PNG or a JPEG and then crop the result as required. Something like this: http://sourceforge.net/projects/imageprinter/

Which emulates a printer that might help you print stuff as some image format

Comments

[user55325]

Do you have any reason to believe the rest of the image actually exists in the PDF? I would be surprised if the document retained information that would not be visible under any circumstances.

[JabberwockyDecompiler]

@user55325 There is a border that goes off to the right when I click on the image. Based on that I am assuming the image is still complete in the PDF. The black paste size is also larger than the width of a PDF document.

[henry700]

it is unclear if this is the case with your image, but it is possible that the image is black with an alpha channel or transparency applied. I have seen SVG files (graphs, charts) which wrap a raster image in an SVG container and use that image as a mask on a black rectangle. (this defeats the purpose of using SVG vector files, but there it is)

[Shadow]

Have you tried updating your config file according to the detailed suggestions in the error message?

[Jinna Balu]

You are trying to connect to tcp 127.0.0.1:3306, but you have opened 3308 port in the MySQL container. Either you modify the port or update the port configuration

[Saan Classes]

Thanks @Shadow! Yes, I did that, It fixes one of my errors but still getting connection issues. Could you plz take a look at my .yaml file again if I need to refactor? After the fix/changes, error comes up as follows: Attaching to db_mysql, web_api db_mysql | 2021-11-09 06:42:58+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.26-1debian10 started. web_api | 2021/11/09 06:41:36 dial tcp 127.0.0.1:3306: connect: connection refused

[Saan Classes]

Plz, find my repo as well for your reference link. thanks.

[JabberwockyDecompiler]

Good idea, I gave that a try, it still just cut off the image. I also tried to send it to XPF. Same thing.

[JabberwockyDecompiler]

extract.smallpdf.com did the trick. P.S. 90 Seconds Johnny, that's all I ask for.

[Panther]

Great, hope it is a nice picture =)

[JabberwockyDecompiler]

For anyone else studying the 70-480 HTML5 CSS3 JS for question 66 here is the full list of answer options. Question 66 Uncut Answer Selection

[pabouk - Ukraine stay strong]

pdfimages is a great tool from the Xpdf package which is available both for Unix-like systems and Windows: foolabs.com/xpdf/download.html

[JabberwockyDecompiler]

@bodhi.zazen This saved me again, same file different spot. I did not even need to go to the site since it downloaded everything. Would upvote twice if I could.

[Saan Classes]

thanks @caveman for pointing out, I couldn't get where to change. Could you look here again on my repo itself i.e. github.com/afzal442/go_prac/tree/main/GO_Exercise/T1

[Dylan Reimerink]

Here you define your database connection string, I think that is it: github.com/afzal442/go_prac/blob/…

[Saan Classes]

after workaround, I discovered the same issue. something like below; Attaching to db_mysql, web_api db_mysql | 2021-11-09 11:39:05+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.26-1debian10 started. db_mysql | 2021-11-09 11:39:05+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql' db_mysql | 2021-11-09 11:39:05+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.26-1debian10 started. db_mysql | 2021-11-09T11:39:08.118776Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.26) starting as process 1

[Saan Classes]

db_mysql | 2021-11-09T11:39:08.240601Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started. web_api | 2021/11/09 11:39:08 dial tcp 127.0.0.1:3306: connect: connection refused web_api exited with code 1 db_mysql | 2021-11-09T11:39:09.501674Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.

[Saan Classes]

db_mysql | 2021-11-09T11:39:10.354847Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Bind-address: '::' port: 33060, socket: /var/run/mysqld/mysqlx.sock db_mysql | 2021-11-09T11:39:10.355065Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.0.26' socket: '/var/run/mysqld/mysqld.sock' port: 3306 MySQL Community Server - GPL. web_api | 2021/11/09 11:39:12 dial tcp 127.0.0.1:3306: connect: connection refused web_api exited with code 0

[Saan Classes]

Could you @caveman plz also take a look again? thanks github.com/afzal442/go_prac/blob/…

[Dylan Reimerink]

github.com/afzal442/go_prac/blob/… you are still trying to connect to 127.0.0.1, your db is in a separate container you need to change it to db_mysql or webapi-mysql (I am not sure if the container_name option also applies to the generated DNS name)