# Baiduindex **Repository Path**: LxYazI/Baiduindex ## Basic Information - **Project Name**: Baiduindex - **Description**: 百度指数-图像识别抓取,逻辑不难,代码写得渣渣 - **Primary Language**: Python - **License**: Not specified - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 1 - **Forks**: 0 - **Created**: 2020-08-14 - **Last Updated**: 2024-07-15 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README ## 百度指数抓取,再用图像识别得到指数 ## 前言: 土福曾说,百度指数很难抓,在淘宝上面是20块1个关键字: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110162432795-1923984431.png) 哥那么叼的人怎么会被他吓到,于是乎花了零零碎碎加起来大约2天半搞定,在此鄙视一下土福 ### 安装的库很多: >谷歌图像识别tesseract-ocr >pip3 install pillow >pip3 install pyocr >selenium2.45 >Chrome47.0.2526.106 m or Firebox32.0.1 >chromedriver.exe ### 图像识别验证码请参考我的博客: [python图像识别--验证码](http://www.cnblogs.com/TTyb/p/5996847.html) ### selenium用法请参考我的博客: [python之selenium](http://www.cnblogs.com/TTyb/p/5842015.html) ### 进入百度指数需要登陆,登陆的账号密码写在文本account里面: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110153714827-1835068903.png) ### 万能登陆代码如下: ``` # 打开浏览器 def openbrowser(): global browser # https://passport.baidu.com/v2/?login url = "https://passport.baidu.com/v2/?login&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F" # 打开谷歌浏览器 # Firefox() # Chrome() browser = webdriver.Chrome() # 输入网址 browser.get(url) # 打开浏览器时间 # print("等待10秒打开浏览器...") # time.sleep(10) # 找到id="TANGRAM__PSP_3__userName"的对话框 # 清空输入框 browser.find_element_by_id("TANGRAM__PSP_3__userName").clear() browser.find_element_by_id("TANGRAM__PSP_3__password").clear() # 输入账号密码 # 输入账号密码 account = [] try: fileaccount = open("../baidu/account.txt") accounts = fileaccount.readlines() for acc in accounts: account.append(acc.strip()) fileaccount.close() except Exception as err: print(err) input("请正确在account.txt里面写入账号密码") exit() browser.find_element_by_id("TANGRAM__PSP_3__userName").send_keys(account[0]) browser.find_element_by_id("TANGRAM__PSP_3__password").send_keys(account[1]) # 点击登陆登陆 # id="TANGRAM__PSP_3__submit" browser.find_element_by_id("TANGRAM__PSP_3__submit").click() # 等待登陆10秒 # print('等待登陆10秒...') # time.sleep(10) print("等待网址加载完毕...") select = input("请观察浏览器网站是否已经登陆(y/n):") while 1: if select == "y" or select == "Y": print("登陆成功!") print("准备打开新的窗口...") # time.sleep(1) # browser.quit() break elif select == "n" or select == "N": selectno = input("账号密码错误请按0,验证码出现请按1...") # 账号密码错误则重新输入 if selectno == "0": # 找到id="TANGRAM__PSP_3__userName"的对话框 # 清空输入框 browser.find_element_by_id("TANGRAM__PSP_3__userName").clear() browser.find_element_by_id("TANGRAM__PSP_3__password").clear() # 输入账号密码 account = [] try: fileaccount = open("../baidu/account.txt") accounts = fileaccount.readlines() for acc in accounts: account.append(acc.strip()) fileaccount.close() except Exception as err: print(err) input("请正确在account.txt里面写入账号密码") exit() browser.find_element_by_id("TANGRAM__PSP_3__userName").send_keys(account[0]) browser.find_element_by_id("TANGRAM__PSP_3__password").send_keys(account[1]) # 点击登陆sign in # id="TANGRAM__PSP_3__submit" browser.find_element_by_id("TANGRAM__PSP_3__submit").click() elif selectno == "1": # 验证码的id为id="ap_captcha_guess"的对话框 input("请在浏览器中输入验证码并登陆...") select = input("请观察浏览器网站是否已经登陆(y/n):") else: print("请输入“y”或者“n”!") select = input("请观察浏览器网站是否已经登陆(y/n):") ``` ### 登陆的页面: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110154107624-1393804790.png) ### 登陆过后需要打开新的窗口,也就是打开百度指数,并且切换窗口,在selenium用: ``` # 新开一个窗口,通过执行js来新开一个窗口 js = 'window.open("http://index.baidu.com");' browser.execute_script(js) # 新窗口句柄切换,进入百度指数 # 获得当前打开所有窗口的句柄handles # handles为一个数组 handles = browser.window_handles # print(handles) # 切换到当前最新打开的窗口 browser.switch_to_window(handles[-1]) ``` ### 清空输入框,构造点击天数: ``` # 清空输入框 browser.find_element_by_id("schword").clear() # 写入需要搜索的百度指数 browser.find_element_by_id("schword").send_keys(keyword) # 点击搜索 # browser.find_element_by_id("searchWords").click() time.sleep(2) # 最大化窗口 browser.maximize_window() # 构造天数 sel = int(input("查询7天请按0,30天请按1,90天请按2,半年请按3:")) day = 0 if sel == 0: day = 7 elif sel == 1: day = 30 elif sel == 2: day = 90 elif sel == 3: day = 180 sel = '//a[@rel="' + str(day) + '"]' browser.find_element_by_xpath(sel).click() # 太快了 time.sleep(2) ``` ### 天数也就是这里: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110154603561-1092775179.png) ### 找到图形框: ``` xoyelement = browser.find_elements_by_css_selector("#trend rect")[2] ``` ### 图形框就是: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110154817608-982142410.png) ### 根据坐标点的不同构造偏移量: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110155142530-319352053.png) ### 选取7天的坐标来观察: >第一个点的横坐标为1031.66666 >第二个点的横坐标为1234 ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110155720764-1186100464.png) 所以7天两个坐标之间的差为:202.33,其他的天数类似 ### 用selenium库来模拟鼠标滑动悬浮: ``` from selenium.webdriver.common.action_chains import ActionChains ActionChains(browser).move_to_element_with_offset(xoyelement,x_0,y_0).perform() ``` ### 但是这样子确定的点指出是在这个位置: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110155752202-120333333.png) 也就是矩形的左上角,这里是不会加载js显示弹出框的,所以要给横坐标+1: ``` x_0 = 1 y_0 = 0 ``` ### 写个按照天数的循环,让横坐标累加: ``` # 按照选择的天数循环 for i in range(day): # 构造规则 if day == 7: x_0 = x_0 + 202.33 elif day == 30: x_0 = x_0 + 41.68 elif day == 90: x_0 = x_0 + 13.64 elif day == 180: x_0 = x_0 + 6.78 ``` ### 鼠标横移时会弹出框,在网址里面找到这个框: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110160257592-723215476.png) ### selenium自动识别之...: ``` #
imgelement = browser.find_element_by_xpath('//div[@id="viewbox"]') ``` ### 并且确定这个框的大小位置: ``` # 找到图片坐标 locations = imgelement.location print(locations) # 找到图片大小 sizes = imgelement.size print(sizes) # 构造指数的位置 rangle = (int(locations['x']), int(locations['y']), int(locations['x'] + sizes['width']), int(locations['y'] + sizes['height'])) ``` 截取的图形为: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110160502389-924750650.png) ### 下面的思路就是: >1. 将整个屏幕截图下来 >2. 打开截图用上面得到的这个坐标rangle进行裁剪 ### 但是最后裁剪出来的是上面的那个黑框,我想要的效果是: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110160724577-1831216031.jpg) ### 本次更新加入了对于关键词长度的判断,能够自动识别关键词长度而进行截取: ``` add_length = (len(keyword) - 2) * sizes['width'] / 15 ``` ### 找到位置: ``` # 跨浏览器兼容 scroll = browser.execute_script("return window.scrollY;") top = locations['y'] - scroll # 构造指数的位置 rangle = ( int(locations['x'] + sizes['width'] / 4 + add_length), int(top + sizes['height'] / 2), int(locations['x'] + sizes['width'] * 2 / 3), int(top + sizes['height'])) ``` ### 后面的完整代码是: ``` #
imgelement = browser.find_element_by_xpath('//div[@id="viewbox"]') # 找到图片坐标 locations = imgelement.location print(locations) # 找到图片大小 sizes = imgelement.size print(sizes) # 构造指数的位置 rangle = (int(locations['x'] + sizes['width']/3), int(locations['y'] + sizes['height']/2), int(locations['x'] + sizes['width']*2/3), int(locations['y'] + sizes['height'])) # 截取当前浏览器 path = "../baidu/" + str(num) browser.save_screenshot(str(path) + ".png") # 打开截图切割 img = Image.open(str(path) + ".png") jpg = img.crop(rangle) jpg.save(str(path) + ".jpg") ``` ### 但是后面发现裁剪的图片太小,识别精度太低,所以需要对图片进行扩大: ``` # 将图片放大一倍 # 原图大小73.29 jpgzoom = Image.open(str(path) + ".jpg") (x, y) = jpgzoom.size x_s = 146 y_s = 58 out = jpgzoom.resize((x_s, y_s), Image.ANTIALIAS) out.save(path + 'zoom.jpg', 'png', quality=95) ``` 原图大小请 **右键->属性->详细信息** 查看,我的是长73像素,宽29像素 ### 最后就是图像识别 ``` # 图像识别 index = [] image = Image.open(str(path) + "zoom.jpg") code = pytesseract.image_to_string(image) if code: index.append(code) ``` ### 最后效果图: ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110161512889-300916957.png) ![](http://images2015.cnblogs.com/blog/996148/201611/996148-20161110161525874-60911542.png) ## 详细解说请观看我的博客: [TTyb](http://www.cnblogs.com/TTyb) # 更新日志: > 2017-10-23修复截图位置不对的bug,优化关键词自动识别长度的漏洞