Python Selenium 图片资源自动搜索保存项目实践

实现访问首页

from os.path import dirname

from selenium import webdriver


class ImageAutoSearchAndSave:
    """图片自动搜索保存"""
    def __init__(self):
        """初始化"""
        self.driver = webdriver.Chrome(executable_path=dirname(__file__) + "/chromedriver.exe")

    def run(self):
        """开始运行"""
        print("=======开始=======")
        # 访问首页
        self.driver.get("https://pixabay.com/")
        print("=======结束=======")


if __name__ == '__main__':
    ImageAutoSearchAndSave().run()

启动后会自动打开一个页面
在这里插入图片描述

实现图片自动欧索

from os.path import dirname

from selenium import webdriver
from selenium.webdriver.common.keys import Keys


class ImageAutoSearchAndSave:
    """图片自动搜索保存"""

    def __init__(self, keyword):
        """初始化"""
        self.keyword = keyword
        self.driver = webdriver.Chrome(executable_path=dirname(__file__) + "/chromedriver.exe")

    def run(self):
        """开始运行"""
        print("=======开始=======")
        # 访问首页
        self.driver.get("https://pixabay.com/")
        # 搜索图片
        self._search_image()
        print("=======结束=======")

    def _search_image(self):
        '''搜索图片'''
        elem = self.driver.find_element_by_css_selector("input[name]")
        elem.send_keys(self.keyword + Keys.ENTER)


if __name__ == '__main__':
    keyword = "cat"
    ImageAutoSearchAndSave(keyword).run()

遍历所有图片列表页面

页面分析

第一页
在这里插入图片描述
第二页

由此可得出变化的只有这里，根据pagi= 展示不同页面

红色箭头定位到页数，绿色的不要使用是反爬虫的限制，不断变化的

from os.path import dirname

from selenium import webdriver
from selenium.webdriver.common.keys import Keys


class ImageAutoSearchAndSave:
    """图片自动搜索保存"""

    def __init__(self, keyword):
        """初始化"""
        self.keyword = keyword
        self.driver = webdriver.Chrome(executable_path=dirname(__file__) + "/chromedriver.exe")

    def run(self):
        """开始运行"""
        print("=======开始=======")
        # 访问首页
        self.driver.get("https://pixabay.com/")
        # 搜索图片
        self._search_image()
        # 遍历所有页面
        self._iter_all_page()


        print("=======结束=======")

    def _search_image(self):
        '''搜索图片'''
        elem = self.driver.find_element_by_css_selector("input[name]")
        elem.send_keys(self.keyword + Keys.ENTER)

    def _iter_all_page(self):
        '''遍历所有页面'''
        # 获取总页面
        elem = self.driver.find_element_by_css_selector("input[class^=pageInput]")
        page_total = int(elem.text.strip("/ "))
        # 遍历所有页面
        base_url = self.driver.current_url
        for page_num in range(1,page_total+1):
            if page_num>1:
                self.driver.get(f"{base_url}?pagi={page_num}&")
if __name__ == '__main__':
    keyword = "sunflower"
    ImageAutoSearchAndSave(keyword).run()

获取所有图片详情页链接

在这里插入图片描述

from os.path import dirname

from lxml.etree import HTML
from selenium import webdriver
from selenium.webdriver.common.keys import Keys


class ImageAutoSearchAndSave:
    """图片自动搜索保存"""

    def __init__(self, keyword):
        """初始化"""
        self.keyword = keyword
        self.all_detail_link = []
        self.driver = webdriver.Chrome(executable_path=dirname(__file__) + "/chromedriver.exe")

    def run(self):
        """开始运行"""
        print("=======开始=======")
        # 访问首页
        self.driver.get("https://pixabay.com/")
        # 搜索图片
        self._search_image()
        # 遍历所有页面
        self._iter_all_page()

        print("=======结束=======")

    def _search_image(self):
        '''搜索图片'''
        elem = self.driver.find_element_by_css_selector("input[name]")
        elem.send_keys(self.keyword + Keys.ENTER)

    def _iter_all_page(self):
        '''遍历所有页面'''
        # 获取总页面
        elem = self.driver.find_element_by_css_selector("input[class^=pageInput]")
        page_total = int(elem.text.strip("/ "))
        # 遍历所有页面
        base_url = self.driver.current_url
        for page_num in range(1, page_total + 1):
            if page_num > 1:
                self.driver.get(f"{base_url}?pagi={page_num}&")
            # href 属性
            root = HTML(self.driver.page_source)
            # a标签中的href属性
            detail_links = root.xpath("//div[start-with(@class,'result')]//a[start-with(@class,'link')]/@href")
            for detail_link in detail_links:
                self.all_detail_link.append(detail_link)


if __name__ == '__main__':
    keyword = "sunflower"
    ImageAutoSearchAndSave(keyword).run()

增加下载数量的限制

在这里插入图片描述

from os.path import dirname

from lxml.etree import HTML
from selenium import webdriver
from selenium.webdriver.common.keys import Keys


class ImageAutoSearchAndSave:
    """图片自动搜索保存"""

    def __init__(self, keyword,limit=0):
        """初始化"""
        self.keyword = keyword
        self.all_detail_link = []
        self.limit=limit #0表示没有限制
        self.count = 0 #用来计数
        self.driver = webdriver.Chrome(executable_path=dirname(__file__) + "/chromedriver.exe")

    def run(self):
        """开始运行"""
        print("=======开始=======")
        # 访问首页
        self.driver.get("https://pixabay.com/")
        # 搜索图片
        self._search_image()
        # 遍历所有页面
        self._iter_all_page()

        print("=======结束=======")

    def _search_image(self):
        '''搜索图片'''
        elem = self.driver.find_element_by_css_selector("input[name]")
        elem.send_keys(self.keyword + Keys.ENTER)

    def _iter_all_page(self):
        '''遍历所有页面'''
        # 获取总页面
        elem = self.driver.find_element_by_css_selector("input[class^=pageInput]")
        # page_total = int(elem.text.strip("/ "))
        page_total = 5
        # 遍历所有页面
        base_url = self.driver.current_url
        for page_num in range(1, page_total + 1):
            if page_num > 1:
                self.driver.get(f"{base_url}?pagi={page_num}&")
            # href 属性
            root = HTML(self.driver.page_source)
            is_reach_limit = False
            # 获取每一页详情链接   a标签中的href属性
            detail_links = root.xpath("//div[start-with(@class,'result')]//a[start-with(@class,'link')]/@href")
            for detail_link in detail_links:
                self.all_detail_link.append(detail_link)
                self.count += 1
                if self.limit >0 and self.count == self.limit:
                    is_reach_limit = True
                    break
            if is_reach_limit:
                break
if __name__ == '__main__':
    keyword = "sunflower"
    limit = 3
    ImageAutoSearchAndSave(keyword,limit).run()

获取所有图片详情、获取图片下载链接

在这里插入图片描述

from os.path import dirname

from lxml.etree import HTML
from selenium import webdriver
from selenium.webdriver.common.keys import Keys


class ImageAutoSearchAndSave:
    """图片自动搜索保存"""

    def __init__(self, keyword, limit=0):
        """初始化"""
        self.keyword = keyword
        self.all_detail_link = []
        self.limit = limit  # 0表示没有限制
        self.count = 0  # 用来计数
        self.all_download_link = [] # 图片详情的下载链接
        self.driver = webdriver.Chrome(executable_path=dirname(__file__) + "/chromedriver.exe")

    def run(self):
        """开始运行"""
        print("=======开始=======")
        # 访问首页
        self.driver.get("https://pixabay.com/")
        # 搜索图片
        self._search_image()
        # 遍历所有页面
        self._iter_all_page()
        # 访问图片详情页
        self._visit_image_detail()
        # 释放资源
        self.driver.close()
        del self.all_detail_link
        print("=======结束=======")

    def _search_image(self):
        '''搜索图片'''
        elem = self.driver.find_element_by_css_selector("input[name]")
        elem.send_keys(self.keyword + Keys.ENTER)

    def _iter_all_page(self):
        '''遍历所有页面'''
        # 获取总页面
        elem = self.driver.find_element_by_css_selector("input[class^=pageInput]")
        # page_total = int(elem.text.strip("/ "))
        page_total = 5
        # 遍历所有页面
        base_url = self.driver.current_url
        for page_num in range(1, page_total + 1):
            if page_num > 1:
                self.driver.get(f"{base_url}?pagi={page_num}&")
            # href 属性
            root = HTML(self.driver.page_source)
            is_reach_limit = False
            # 获取每一页详情链接   a标签中的href属性
            detail_links = root.xpath("//div[start-with(@class,'result')]//a[start-with(@class,'link')]/@href")
            for detail_link in detail_links:
                self.all_detail_link.append(detail_link)
                self.count += 1
                if self.limit > 0 and self.count == self.limit:
                    is_reach_limit = True
                    break
            if is_reach_limit:
                break

    def _visit_image_detail(self):
        '''访问图片详情页'''
        for detail_link in self.all_detail_link:
            self.driver.get(detail_link)
            elem = self.driver.find_element_by_css_selector("#media_container > picture > img")
            download_link = elem.get_attribute("src")
            self.all_download_link.append(download_link)

if __name__ == '__main__':
    keyword = "sunflower"
    limit = 3
    ImageAutoSearchAndSave(keyword, limit).run()

下载所有图片

from io import BytesIO
from os import makedirs
from os.path import dirname
from time import strftime

import requests
from PIL import Image
from lxml.etree import HTML
from selenium import webdriver
from selenium.webdriver.common.keys import Keys


class ImageAutoSearchAndSave:
    """图片自动搜索保存"""

    def __init__(self, keyword, limit=0):
        """初始化"""
        self._keyword = keyword
        self.all_detail_link = []
        self._limit = limit  # 0表示没有限制
        self._count = 0  # 用来计数
        self.all_download_link = [] # 图片详情的下载链接
        self._driver = webdriver.Chrome(executable_path=dirname(__file__) + "/chromedriver.exe")

    def run(self):
        """开始运行"""
        print("=======开始=======")
        # 访问首页
        self._driver.get("https://pixabay.com/")
        # 搜索图片
        self._search_image()
        # 遍历所有页面
        self._iter_all_page()
        # 访问图片详情页
        self._visit_image_detail()
        # 释放资源
        self._driver.close()
        del self.all_detail_link
        
        # 下载所有图片
        self._download_all_image()
        print("=======结束=======")

    def _search_image(self):
        '''搜索图片'''
        elem = self._driver.find_element_by_css_selector("input[name]")
        elem.send_keys(self._keyword + Keys.ENTER)

    def _iter_all_page(self):
        '''遍历所有页面'''
        # 获取总页面
        elem = self._driver.find_element_by_css_selector("input[class^=pageInput]")
        # page_total = int(elem.text.strip("/ "))
        page_total = 5
        # 遍历所有页面
        base_url = self._driver.current_url
        for page_num in range(1, page_total + 1):
            if page_num > 1:
                self._driver.get(f"{base_url}?pagi={page_num}&")
            # href 属性
            root = HTML(self._driver.page_source)
            is_reach_limit = False
            # 获取每一页详情链接   a标签中的href属性
            detail_links = root.xpath("//div[start-with(@class,'result')]//a[start-with(@class,'link')]/@href")
            for detail_link in detail_links:
                self.all_detail_link.append(detail_link)
                self._count += 1
                if self._limit > 0 and self._count == self._limit:
                    is_reach_limit = True
                    break
            if is_reach_limit:
                break

    def _visit_image_detail(self):
        '''访问图片详情页 获取对应的图片链接'''
        for detail_link in self.all_detail_link:
            self._driver.get(detail_link)
            elem = self._driver.find_element_by_css_selector("#media_container > picture > img")
            download_link = elem.get_attribute("src")
            self.all_download_link.append(download_link)

    def _download_all_image(self):
        '''下载所有图片'''
        download_dir = f"{dirname(__file__)}/download/{strftime('%Y%m%d-%H%M%S')}-{self._keyword}"
        makedirs(download_dir)
        #下载所有图片
        count = 0
        for download_link in self.all_download_link:
            response = requests.get(download_link)
            count += 1
            # response.content 二进制内容  response.text 文本内容
            image = Image.open(BytesIO(response.content))
            # rjust  000001.png
            filename = f"{str(count).rjust(6,'0')}.png"
            file_path = f"{download_dir}/{filename}"
            image.save(file_path)

if __name__ == '__main__':
    keyword = "sunflower"
    limit = 3
    ImageAutoSearchAndSave(keyword, limit).run()