用Python语言编写爬取百度图片中猫和狗的图片各100张，将图片存入相应文件夹，两个文件夹分别为cat和dog的代码

以下是基于Python语言的实现方法：

import requests
import os

# 创建图片存储目录
if not os.path.exists('cat'):
    os.mkdir('cat')
if not os.path.exists('dog'):
    os.mkdir('dog')

# 爬取猫的图片
cat_url = 'https://image.baidu.com/search/acjson?tn=resultjson_com&ipn=rj&ct=201326592&is=&fp=result&queryWord=猫&cl=2&lm=-1&ie=utf-8&oe=utf-8&adpicid=&st=-1&z=&ic=&word=猫&s=&se=&tab=&width=&height=&face=&istype=&qc=&nc=&fr=&step_word='
cat_headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36'
}
cat_response = requests.get(cat_url, headers=cat_headers)
cat_data = cat_response.json()['data']
for i in range(100):
    cat_img_url = cat_data[i]['thumbURL']
    cat_img_response = requests.get(cat_img_url, headers=cat_headers)
    with open(f'cat/cat{i}.jpg', 'wb') as f:
        f.write(cat_img_response.content)

# 爬取狗的图片
dog_url = 'https://image.baidu.com/search/acjson?tn=resultjson_com&ipn=rj&ct=201326592&is=&fp=result&queryWord=狗&cl=2&lm=-1&ie=utf-8&oe=utf-8&adpicid=&st=-1&z=&ic=&word=狗&s=&se=&tab=&width=&height=&face=&istype=&qc=&nc=&fr=&step_word='
dog_headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36'
}
dog_response = requests.get(dog_url, headers=dog_headers)
dog_data = dog_response.json()['data']
for i in range(100):
    dog_img_url = dog_data[i]['thumbURL']
    dog_img_response = requests.get(dog_img_url, headers=dog_headers)
    with open(f'dog/dog{i}.jpg', 'wb') as f:
        f.write(dog_img_response.content)

以上代码中，我们首先创建了两个文件夹用于存储猫和狗的图片，然后使用requests模块发送HTTP请求，获取百度搜索结果的JSON数据。接着，我们从JSON数据中提取出每张图片的URL，并将其下载到对应的文件夹中。最终，我们可以在cat和dog文件夹中找到100张猫和100张狗的图片，分别以cat{i}.jpg和dog{i}.jpg的格式命名。