0

ページ上の要素の存在を確認しているだけです。

sleep 5 # for the page load
form.wait_until_present
next if form.span(:class => "SSSMSGWARNINGTEXT").exists?

form次の 2 行に由来します。

browser.goto browser.frame(:name => "TargetContent").src
form = browser.form(:name => "win1")

前のページと現在のページの両方がform存在するため、新しいページがあることを確認するためにスリープを追加しました。ただし、私のプログラムはまだエラーでクラッシュします:

[remote server] resource://fxdriver/modules/web_element_cache.js:5665:in `unknown': Element not found in the cache - perhaps the page has changed since it was looked up (Selenium::WebDriver::Error::StaleElementReferenceError)
from [remote server] file:///var/folders/80/_bwll9x91h7d6c5dp2d3fbb00000gr/T/webdriver-profile20120724-63693-194o52g/extensions/fxdriver@googlecode.com/components/driver_component.js:5354:in `unknown'
from [remote server] file:///var/folders/80/_bwll9x91h7d6c5dp2d3fbb00000gr/T/webdriver-profile20120724-63693-194o52g/extensions/fxdriver@googlecode.com/components/driver_component.js:6597:in `unknown'
from [remote server] file:///var/folders/80/_bwll9x91h7d6c5dp2d3fbb00000gr/T/webdriver-profile20120724-63693-194o52g/extensions/fxdriver@googlecode.com/components/driver_component.js:471:in `unknown'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/response.rb:52:in `assert_ok'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/response.rb:15:in `initialize'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:59:in `new'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:59:in `create_response'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/default.rb:65:in `request'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:40:in `call'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:598:in `raw_execute'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:576:in `execute'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:542:in `find_element_by'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/search_context.rb:42:in `find_element'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/watir-webdriver-0.6.1/lib/watir-webdriver/locators/element_locator.rb:85:in `find_first_by_multiple'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/watir-webdriver-0.6.1/lib/watir-webdriver/locators/element_locator.rb:32:in `locate'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/watir-webdriver-0.6.1/lib/watir-webdriver/elements/element.rb:384:in `locate'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/watir-webdriver-0.6.1/lib/watir-webdriver/elements/element.rb:362:in `assert_exists'
from /Users/amosng/.rvm/gems/ruby-1.8.7-p370/gems/watir-webdriver-0.6.1/lib/watir-webdriver/elements/element.rb:37:in `exists?'
from ./my-script.rb:123:in `foo'

特定の要素が存在するかどうかを知りたいだけの場合、何がエラーをスローする可能性がありますか?

編集:したがって、待機時間を10秒に延長すると問題が解決するようです。そのページにはたくさんの Javascript があるため、 が実行されたときにページのリロードが開始されていない可能性があり、 が実行されform.wait_until_presentたときに、next if form.span(:class => "SSSMSGWARNINGTEXT").exists?ページのロードの間にフォームが存在しなくなっていると思います。少なくともそれが、このクラッシュについて私が考えることができる唯一の理由です...

しかし問題は、このようにページがリロードされる場所がいくつかあることです。どこでも 10 秒のスリープを追加すると、耐えられないクロールまで遅くなります。ページが完全にリロードされたことをプログラムに検出させるにはどうすればよいですか?

EDIT 2form ：ページがリロードされるたびに設定を試みました：

    ...
    form = browser.form(:name => "win1")
    form.wait_until_present
    form.a(:id => "CLASS_SRCH_WRK2_SSR_PB_CLASS_SRCH").click
    form = browser.form(:name => "win1")
    form.wait_until_present
    form.input(:id => "#ICSave").click if form.input(:id => "#ICSave").exists?
    form = browser.form(:name => "win1")
    form.wait_until_present
    ...

それでも同様のエラー:

[remote server] resource://fxdriver/modules/web_element_cache.js:5665:in `unknown': Element not found in the cache - perhaps the page has changed since it was looked up (Selenium::WebDriver::Error::StaleElementReferenceError)
    from [remote server] file:///var/folders/80/_bwll9x91h7d6c5dp2d3fbb00000gr/T/webdriver-profile20120725-47093-y3nzl8/extensions/fxdriver@googlecode.com/components/driver_component.js:5354:in `unknown'
    from [remote server] file:///var/folders/80/_bwll9x91h7d6c5dp2d3fbb00000gr/T/webdriver-profile20120725-47093-y3nzl8/extensions/fxdriver@googlecode.com/components/driver_component.js:6597:in `unknown'
    from [remote server] file:///var/folders/80/_bwll9x91h7d6c5dp2d3fbb00000gr/T/webdriver-profile20120725-47093-y3nzl8/extensions/fxdriver@googlecode.com/components/driver_component.js:471:in `unknown'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/response.rb:52:in `assert_ok'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/response.rb:15:in `initialize'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:59:in `new'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:59:in `create_response'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/default.rb:65:in `request'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/http/common.rb:40:in `call'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:598:in `raw_execute'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:576:in `execute'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/remote/bridge.rb:542:in `find_element_by'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/selenium-webdriver-2.25.0/lib/selenium/webdriver/common/search_context.rb:42:in `find_element'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/watir-webdriver-0.6.1/lib/watir-webdriver/locators/element_locator.rb:247:in `by_id'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/watir-webdriver-0.6.1/lib/watir-webdriver/locators/element_locator.rb:26:in `locate'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/watir-webdriver-0.6.1/lib/watir-webdriver/elements/element.rb:384:in `locate'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/watir-webdriver-0.6.1/lib/watir-webdriver/elements/element.rb:362:in `assert_exists'
    from /Users/amosng/.rvm/gems/ruby-1.9.3-p194/gems/watir-webdriver-0.6.1/lib/watir-webdriver/elements/element.rb:95:in `click'
    from my-script.rb:471:in `block (2 levels) in foo'
    ...

EDIT 3 :テストスクリプト全体は次のとおりです。

require 'watir-webdriver'

def foo
  browser = Watir::Browser.new
  browser.driver.manage.timeouts.implicit_wait = 3
  browser.goto "http://schedule.arizona.edu"
  browser.form(:name => "win1").select_list(:name => "CLASS_SRCH_WRK2_STRM$54$").option(:index => 2).select
  browser.goto browser.frame(:name => "TargetContent").src
  form = browser.form(:name => "win1")
  term_select_list = form.select_list(:name => "CLASS_SRCH_WRK2_STRM$54$")
  (1..browser.form(:name => "win1").select_list(:name => "CLASS_SRCH_WRK2_STRM$54$").options.count - 1).each do |term_index|
    (1..term_select_list.options.count - 1).each do |subj_index|
      term_select_list.option(:index => term_index).select
      sleep 1
      form.select_list(:name => "CLASS_SRCH_WRK2_SUBJECT$67$").option(:index => subj_index).select
      sleep 1
      form.checkbox(:id => "CLASS_SRCH_WRK2_SSR_OPEN_ONLY").click
      sleep 1
      form.a(:id => "CLASS_SRCH_WRK2_SSR_PB_CLASS_SRCH").click
      sleep 1
      form.input(:id => "#ICSave").click if form.input(:id => "#ICSave").exists?
      sleep 10
      form.wait_until_present
      next if form.span(:class => "SSSMSGWARNINGTEXT").exists?
      puts "got the form I want!!! do something with it: #{form.html[0..10]}"
      form.a(:id => "CLASS_SRCH_WRK2_SSR_PB_NEW_SEARCH").click
      sleep 1
      form.wait_until_present
    end
  end
  browser.close
  GC.start
end

foo

ACCT に到達するまではクラッシュしますが、ACCT に到達すると確実にクラッシュします (私にとっては)。

form.wait_until_present任意のスリープの代わりに使用するスクリプト:

require 'watir-webdriver'

def foo
  browser = Watir::Browser.new
  browser.driver.manage.timeouts.implicit_wait = 3
  browser.goto "http://schedule.arizona.edu"
  browser.form(:name => "win1").select_list(:name => "CLASS_SRCH_WRK2_STRM$54$").option(:index => 2).select
  browser.goto browser.frame(:name => "TargetContent").src
  form = browser.form(:name => "win1")
  term_select_list = form.select_list(:name => "CLASS_SRCH_WRK2_STRM$54$")
  (1..browser.form(:name => "win1").select_list(:name => "CLASS_SRCH_WRK2_STRM$54$").options.count - 1).each do |term_index|
    (1..term_select_list.options.count - 1).each do |subj_index|
      term_select_list.option(:index => term_index).select
      form = browser.form(:name => "win1")
      form.wait_until_present
      form.select_list(:name => "CLASS_SRCH_WRK2_SUBJECT$67$").option(:index => subj_index).select
      form = browser.form(:name => "win1")
      form.wait_until_present
      form.checkbox(:id => "CLASS_SRCH_WRK2_SSR_OPEN_ONLY").click
      form = browser.form(:name => "win1")
      form.wait_until_present
      form.a(:id => "CLASS_SRCH_WRK2_SSR_PB_CLASS_SRCH").click
      form = browser.form(:name => "win1")
      form.wait_until_present
      form.input(:id => "#ICSave").click if form.input(:id => "#ICSave").exists?
      form = browser.form(:name => "win1")
      form.wait_until_present
      next if form.span(:class => "SSSMSGWARNINGTEXT").exists?
      puts "got the form I want!!! do something with it: #{form.html[0..10]}"
      form.a(:id => "CLASS_SRCH_WRK2_SSR_PB_NEW_SEARCH").click
      form = browser.form(:name => "win1")
      form.wait_until_present
    end
  end
  browser.close
  GC.start
end

foo

ABE に到達する前にクラッシュします。

4

1 に答える 1

3

何かが現れるのを待つよりも、何かが消えるのを待った方が良い場合もあります。この場合、ajax 呼び出しが行われると、ページが読み込まれていることを示す便利なロゴが表示されます。すべてを次のように置き換えるsleep 1と、スクリプトはエラーなしで完了しました。

browser.image(:id, 'processing').wait_while_present

結果は少し奇妙に見えますが、次のスクリプトでは、発生していた例外が発生しなくなりました。うまくいけば、それは少なくともあなたが始めるのに役立ちます.

require 'watir-webdriver'

def foo
  browser = Watir::Browser.new
  browser.driver.manage.timeouts.implicit_wait = 3
  browser.goto "http://schedule.arizona.edu"
  browser.form(:name => "win1").select_list(:name => "CLASS_SRCH_WRK2_STRM$54$").option(:index => 2).select
  browser.goto browser.frame(:name => "TargetContent").src
  form = browser.form(:name => "win1")
  term_select_list = form.select_list(:name => "CLASS_SRCH_WRK2_STRM$54$")
  (1..browser.form(:name => "win1").select_list(:name => "CLASS_SRCH_WRK2_STRM$54$").options.count - 1).each do |term_index|
    (1..term_select_list.options.count - 1).each do |subj_index|
      term_select_list.option(:index => term_index).select
      browser.image(:id, 'processing').wait_while_present
      form.select_list(:name => "CLASS_SRCH_WRK2_SUBJECT$67$").option(:index => subj_index).select
      browser.image(:id, 'processing').wait_while_present
      form.checkbox(:id => "CLASS_SRCH_WRK2_SSR_OPEN_ONLY").click
      browser.image(:id, 'processing').wait_while_present
      form.a(:id => "CLASS_SRCH_WRK2_SSR_PB_CLASS_SRCH").click
      browser.image(:id, 'processing').wait_while_present
      form.input(:id => "#ICSave").click if form.input(:id => "#ICSave").exists?
      browser.image(:id, 'processing').wait_while_present
      form.wait_until_present
      next if form.span(:class => "SSSMSGWARNINGTEXT").exists?
      puts "got the form I want!!! do something with it: #{form.html[0..10]}"
      form.a(:id => "CLASS_SRCH_WRK2_SSR_PB_NEW_SEARCH").click
      browser.image(:id, 'processing').wait_while_present
      form.wait_until_present
    end
  end
  browser.close
  GC.start
end

foo
于 2012-07-27T02:02:44.733 に答える