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[pyhton practice] - batch [Dragon Boat Festival] poster Download

2022-06-09 10:43:00 【Rattenking】

1. Choose a website to download posters

Take the draft design website as an example ：
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2. View the poster list API

Webpage —> Right mouse button —> Check 【 Click on network, View page requests 】

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Find the data loaded api Methods , Slide the page down to the bottom , Click on page two , Find the interface to load the list , The interface of this website is 【https://www.gaoding.com/api/v3/cp/template-centers/v2/recommend-templates】

3. View request parameters

Click the current interface , Click on payload, You can find the request parameters of the interface ！

4. Check the request header

Click the current interface , Click on headers, You can find the request header of the interface ！

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5. The application needs to use the library to import

import requests,json,time,random,os

6. Get the interface and parameter configuration of the list

url = 'https://www.gaoding.com/api/v3/cp/template-centers/v2/recommend-templates'
data = {
  "page_num": 1,
  "page_size": 50,
  "styles": [],
  "colors": [],
  "filter_nodes": [
    {
      "type": 1,
      "id": 4834126,
      "children": [
        {
          "id": 4834127,
          "type": 2,
          "children": [
            {
              "agg_filter_id": 4834127,
              "value": "1000002024"
            }
          ]
        },
        {
          "id": 4834128,
          "type": 1
        }
      ]
    }
  ]
}

7. Request header configuration

headers = {
  "content-type": "application/json;charset=UTF-8",
  "x-channel-id": "8"
}

8. Create a folder for posters

""" Create a folder for posters """
def create_folder(path):
  if not os.path.exists(path):
    os.mkdir(path)

9. Get poster list

""" Get poster list """
def get_poster_list():
  return requests.post(url, data=json.dumps(data1), headers=headers)

10. Save the poster

""" Save the poster """
def save_poster(url):
  request = requests.get(url)
  with open(f'./images/{int(round(time.time() * 1000))}-{random.randint(100,1000)}-poster.png', 'wb') as img:
    img.write(request.content)

11. Download the posters

""" Download the posters """
def download_poster():
  create_folder('./images')
  res = get_poster_list()
  for item in json.loads(res.text):
    save_poster(item.get("preview").get("url"))

12. Complete code

import requests,json,time,random,os

url = 'https://www.gaoding.com/api/v3/cp/template-centers/v2/recommend-templates'
data = {
  "page_num": 1,
  "page_size": 500,
  "styles": [],
  "colors": [],
  "filter_nodes": [
    {
      "type": 1,
      "id": 4834126,
      "children": [
        {
          "id": 4834127,
          "type": 2,
          "children": [
            {
              "agg_filter_id": 4834127,
              "value": "1000002024"
            }
          ]
        },
        {
          "id": 4834128,
          "type": 1
        }
      ]
    }
  ]
}
headers = {
  "content-type": "application/json;charset=UTF-8",
  "x-channel-id": "8"
}

""" Create a folder for posters """
def create_folder(path):
  if not os.path.exists(path):
    os.mkdir(path)

""" Get poster list """
def get_poster_list():
  return requests.post(url, data=json.dumps(data), headers=headers)

""" Save the poster """
def save_poster(url):
  request = requests.get(url)
  with open(f'./images/{int(round(time.time() * 1000))}-{random.randint(100,1000)}-poster.png', 'wb') as img:
    img.write(request.content)

""" Download the posters """
def download_poster():
  create_folder('./images')
  res = get_poster_list()
  for item in json.loads(res.text):
    save_poster(item.get("preview").get("url"))

if __name__ == "__main__":
  download_poster()