Selenium Webdriver Learning---Three wait time methods: Explicit wait, implicit wait, forced waitThis example includes window maximization, refresh, switch to the specified window, back, forward, get the current window URL and other operations;Import Java.util.Set;Import Java
. Webelement mytable = wd.findelement (By.xpath ("/html/body/table/tbody")); To locate rows of table. List Code Explanation:
Rows_count gives the total number of rows
For each row, we get the total number of columns using Rows_table.get (ROW). Findelements (By.tagname ("TD"));
We iterate through each column and of each row and fetch values.
Output:Summary
Static Web tables is consistent in nature. i.e. they do has fixed number of rows as well as Cell data
Can't find the element this problem has been troubling for two days, has been suspected that the page Div hierarchy too much, positioning is not accurate. So, from table to the last layer of precise positioning, still find no element. What to do, search the answer on the Internet, said it is possible to add an implicit test, so in the implementation of a sentence before adding a waitDriver.manage (). Timeouts (). implicitlywait (Timeunit.seconds);Driv
Selenium Webdriver provides an implicit wait to synchronize the test. When an implicit wait is used to execute the test, if the Webdriver does not find the element in the DOM, it will continue to wait, after the set time is exceed
1 #-*-coding:utf-8-*-2 fromSeleniumImportWebdriver3 fromSelenium.webdriver.common.action_chainsImportActionchains4 fromSelenium.webdriver.support.uiImportwebdriverwait5 6 Import Time7 8Driver = Webdriver. Firefox (executable_path='/users/huiliang/downloads/geckodriver')9Driver.get ("http://www.baidu.com/")Ten OneWebdriverwait (Driver). Until (LambdaX:X.FIND_ELEMENT_BY_ID ('kw'). Send_keys ("Lambda") A " " - driver returns an instance of the browser - Ten Timeout Timeout the poll_frequency lo
as XX time, whether the bump can keep up with the speed, or has been early, must wait xx time.Look at the code:# -*- coding: utf-8 -*-from selenium import webdriverfrom time import sleepdriver = webdriver.Firefox()driver.get(‘https://huilansame.github.io‘)sleep(3) # 强制等待3秒再执行下一步print driver.current_urldriver.quit()This is called forced wait, regardless of whethe
In automated testing, there are times when an element of the page waits for the next action to occur, or the list appears loaded until the next step is completed, but the time is not determined, as shown inFortunately, after Selenium 2 there is a module expected_conditions, there are many functions to complete the work, the relevant blog is visibleHttp://www.cnblogs.com/nbkhic/p/4885041.htmlBut in Selenium
1. Forced waitThe first is also the most simple and rough one way is to force waiting for sleep (xx), the force of the Lightning, such as XX time, whether the bump can keep up with the speed, or has been early, must wait xx time.Look at the code:?
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#-*-coding:utf-8-*- from selenium Import webdriver from time import sleep driver = webdriver. Firefox () driver.ge
set can, I have seen someone to the hidden waiting as a sleep in use, go where all come to ...
3. Explicit waiting
The third approach is to have the explicit wait, webdriverwait, and the Until () and Until_not () method of the class to be able to wait flexibly according to the conditions of judgment. Its main meaning is: The program every XX seconds to look at, if the condition is set up, then perform th
().timeouts().implicitlyWait(second, TimeUnit.SECONDS);
Implicit wait, the implicit wait here is for driver each execution of the command of the longest execution time can also be understood as time-out, some people misunderstand here, that is let driver wait a wh
bump in this period of time to come, then two people immediately set off to play monsters, if the bump in the specified time, Then the flash himself, that nature will wait for you to throw an exception.
Look at the code:
#-*-coding: utf-8-*-
from selenium import webdriver
driver = webdriver.Firefox ()
driver.implicitly_wait (30) # implicit
():" + driver.gettitle ());
Switch back to the original parent window again
Driver.switchto (). window (PARENTWINDOWID);
System.out.println ("Parentwindowid:" + driver.gettitle ());
}
Second, the Intelligent waiting page loading completeWe often encounter the use of selenium to manipulate an element on the page, we need to wait for the page to be loaded after the completion of the operation. Ot
Java Selenium Smart Wait page load complete
We often encounter the use of selenium to manipulate an element on the page, you need to wait for the page to be completed after loading to operate. Otherwise, the element on the page does not exist, and an exception is thrown.
or encounter Ajax asynchronous loading, we nee
Latency waits of selenium are divided into explicit waits (explicit waits) and implicit waits (implicit wait ).
1. Explicit waiting
Explicit waiting means explicitly waiting for an element to appear or the clickable condition of an element to wait until it is reached, unless
1. Explicit waitAn explicit wait is a piece of code that you define to wait for a condition to occur before proceeding with subsequent code execution.From selenium import WebdriverFrom selenium.webdriver.common.by Import byFrom Selenium.webdriver.support.ui import webdriverwait # available since 2.4.0From Selenium.webdriver.support import expected_conditions as E
\tnwjkr4m.selenium') Driver=Webdriver. Firefox (Profile) Driver.maximize_window () Driver.get ('https://home.cnblogs.com/')Try: #wait for a drop-down menu in the blog Park Personal home page with 5 options availableWebdriverwait (driver,10). Until (LambdaL:len (Select (l.find_element_by_id ('sel_application'). Options) = = 5)finally: Driver.quit ()(eight) SummaryApplying element-wait mechanisms is essent
loaded completed, will be reported time-out load;#-*-Coding:utf-8-*-from selenium import webdriverimport timedriver = Webdriver. Chrome () driver.implicitly_wait (20) # Hidden wait, longest wait 30 seconds driver.get (' https://www.baidu.com ') time.sleep (3) Driver.quit () The disadvantage is not intelligent, because with the wide application of AJAX techno
We often encounter the use of selenium to manipulate an element on the page, we need to wait for the page to be loaded after the completion of the operation. Otherwise, the element on the page does not exist and throws an exception.Or the Ajax asynchronous loading, we need to wait for the element to be loaded before we can manipulateSelenium provides a very simpl
With Selenium-ide recording, and writing test cases directly with Selenium-java.jar, you will find that it executes very fast. Much more than the speed of manual operation, and may even exceed the speed of browser loading (faster than the browser?) The result is no element found).If there is an element on the page but is prompted during the test, NoSuchElementException there are two reasons: 1, your strateg
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