51job_selenium测试2

 

Python爬虫视频教程零基础小白到scrapy爬虫高手-轻松入门

https://item.taobao.com/item.htm?spm=a1z38n.10677092.0.0.482434a6EmUbbW&id=564564604865

 

 

 

 

# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""

import requests,bs4,openpyxl,time,selenium
from openpyxl.cell import get_column_letter,column_index_from_string
from selenium import webdriver
excelName="51job.xlsx"
sheetName="Sheet1"
wb1=openpyxl.load_workbook(excelName)
sheet=wb1.get_sheet_by_name(sheetName)
start=1

charset="gb2312"
site="http://jobs.51job.com/all/co198308.html"
browser=webdriver.Firefox()
browser.get(site)
linkElem=browser.find_element_by_link_text("下一页")
linkElem.click()
#elem = browser.find_element_by_class_name('el')
#返回标签的值
#elem.text
#elems = browser.find_elements_by_class_name('el')
elem=browser.find_elements_by_class_name('el')
div1=elem[0].text
div2=elem[1].text



#每个网站爬取相应数据
def Craw(site):
     
    res=requests.get(site)
    res.encoding = charset
    soup1=bs4.BeautifulSoup(res.text,"lxml")
    div=soup1.select('.el')
    len_div=len(div)
    for i in range(len_div):
        #print ("i:",i)
        content=div[i].getText()
        content_list=content.split('\n')
         
        name=content_list[1]
        #print ("name:",name)
        education=content_list[2]
        #print ("education:",education)
        position=content_list[3]
        #print ("position:",position)
        salary=content_list[4]
        #print ("salary:",salary)
        date=content_list[5]
        #print ("date:",date)
    
        sheet['A'+str(i+2)].value=name
        sheet['B'+str(i+2)].value=education
        sheet['C'+str(i+2)].value=position
        sheet['D'+str(i+2)].value=salary
        sheet['E'+str(i+2)].value=date

''' 
Craw(site)       
wb1.save(excelName)
    '''

　　

 

Finding Elements on the Page

WebDriver objects have quite a few methods for finding elements on a page. They are divided into the find_element_* and find_elements_* methods. Thefind_element_* methods return a single WebElement object, representing the first element on the page that matches your query. The find_elements_* methods return a list of WebElement_* objects for every matching element on the page.

Table 11-3 shows several examples of find_element_* and find_elements_* methods being called on a WebDriver object that’s stored in the variable browser.

Table 11-3. Selenium’s WebDriver Methods for Finding Elements

 

Method name	WebElement object/list returned
browser.find_element_by_class_name(name) browser.find_elements_by_class_name(name)	Elements that use the CSS class name
browser.find_element_by_css_selector(selector) browser.find_elements_by_css_selector(selector)	Elements that match the CSS selector
browser.find_element_by_id(id) browser.find_elements_by_id(id)	Elements with a matching id attribute value
browser.find_element_by_link_text(text) browser.find_elements_by_link_text(text)	<a> elements that completely match the textprovided
browser.find_element_by_partial_link_text(text) browser.find_elements_by_partial_link_text(text)	<a> elements that contain the text provided
browser.find_element_by_name(name) browser.find_elements_by_name(name)	Elements with a matching name attribute value
browser.find_element_by_tag_name(name) browser.find_elements_by_tag_name(name)	Elements with a matching tag name (case insensitive; an <a> element is matched by 'a'and 'A')

 

 

Except for the *_by_tag_name() methods, the arguments to all the methods are case sensitive. If no elements exist on the page that match what the method is looking for, the selenium module raises a NoSuchElement exception. If you do not want this exception to crash your program, add try and except statements to your code.

Once you have the WebElement object, you can find out more about it by reading the attributes or calling the methods in Table 11-4.

Table 11-4. WebElement Attributes and Methods

Attribute or method	Description
tag_name	The tag name, such as 'a' for an <a> element
get_attribute(name)	The value for the element’s name attribute
text	The text within the element, such as 'hello' in <span>hello</span>
clear()	For text field or text area elements, clears the text typed into it
is_displayed()	Returns True if the element is visible; otherwise returns False
is_enabled()	For input elements, returns True if the element is enabled; otherwise returns False
is_selected()	For checkbox or radio button elements, returns True if the element is selected; otherwise returns False
location	A dictionary with keys 'x' and 'y' for the position of the element in the page

 

 

Table 11-5. Commonly Used Variables in the selenium.webdriver.common.keysModule

Attributes	Meanings
Keys.DOWN, Keys.UP, Keys.LEFT, Keys.RIGHT	The keyboard arrow keys
Keys.ENTER, Keys.RETURN	The ENTER and RETURN keys
Keys.HOME, Keys.END, Keys.PAGE_DOWN,Keys.PAGE_UP	The home, end, pagedown, and pageup keys
Keys.ESCAPE, Keys.BACK_SPACE, Keys.DELETE	The ESC, BACKSPACE, and DELETE keys
Keys.F1, Keys.F2,..., Keys.F12	The F1 to F12 keys at the top of the keyboard
Keys.TAB	The TAB key

 

 

 

 

 

转载于:https://www.cnblogs.com/webRobot/p/5302439.html