RSelenium: What is preventing me from inputting a password into this (Java?) login form?

In the midst of my web scraping endeavors, I have encountered a slight hiccup when trying to extract data from this particular website using RSelenium. While I've had success sending text to various elements on the page, the login field has proven to be quite tricky. It appears that the login form is written in Java, as indicated by the css selectors in SelectorGadget (.j_username & .j_password), which has left me stumped.

If all else fails, I wouldn't mind resorting to manual login, but even that seems elusive at this point =).

remDr <- RSelenium::remoteDriver(remoteServerAddr = "localhost",
                                     port = 4445L,
                                     browserName = "chrome")
    remDr$open()

remDr$navigate("https://smd.ch/SMDView/log/index.jsp")
login_name <- remDr$findElement(using = "xpath", "//*[contains(concat( ' ', @class, ' ' ), concat( ' ', 'j_username', ' ' ))]")
login_name$clickElement()
login_name$clearElement()
login_name$clickElement()
login_name$sendKeysToElement(list("xxxxxxx"))
login_pw <- remDr$findElement(using = "xpath", "//*[contains(concat( ' ', @class, ' ' ), concat( ' ', 'j_password', ' ' ))]")
login_pw$click()
login_pw$clearElement()
login_name$click()
login_pw$sendKeysToElement(list("xxxxxxx", "\uE007"))
remDr$screenshot(display = TRUE)
javardockerselenium

Answer №1

It appears there is an issue with the xpath method. You can try using the following xpaths to locate the elements for username and password.

//div[@class='login_screen']//input[@name='j_username']

//div[@class='login_screen']//input[@name='j_password']

Answer №2

In the webpage, there are multiple login options available - one for mobile and one for desktop. Depending on the screen size or user agent being simulated, only one of these logins is visible while the other remains hidden. To access the desktop login, use the following xpath expressions:

//*/div[@class='login_screen']//*[contains(@class,'j_username')
//*/div[@class='login_screen']//*[contains(@class,'j_password')

For testing xPath expressions, a general tip would be to open the webpage in Google Chrome, access the developer tools, and navigate to the Console tab. Then input: $x("XPATH"), replacing XPATH with your desired expression to test. Press enter and Chrome will display the results for the active page, allowing you to click on them for highlighting - even if they are invisible. This method of testing xPath expressions in Chrome before implementation in code can save you a significant amount of time.

Answer №3

It appears that you were quite close in your approach. It seems that the Locator Strategies you used identified multiple elements, causing functions like clearElement(), clickElement(), and sendKeysToElement() to interact with the first matching element found within:

<div class="login_mobile">

rather than the desired element:

<div class="login_screen">

Solution

In order to interact with the login fields, you can use the following Locator Strategies:

  • cssSelector

    • The Benutzername field:

      div.login_screen input.inputfield.j_username[name='j_username']

    • The Passwort field:

      div.login_screen input.inputfield.j_password[name='j_password']

  • xpath :

    • The Benutzername field:

      //div[@class='login_screen']//input[@class='inputfield j_username' and @name='j_username']

    • The Passwort field:

      //div[@class='login_screen']//input[@class='inputfield j_password' and @name='j_password']

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