selenium - 如何使用 Selenium::Remote::Driver 抑制 "warning"？

Question

no warnings;
use Selenium::Remote::Driver;
 
my $driver = Selenium::Remote::Driver->new;
$driver->get('https://www.crawler-test.com/');
$driver->find_element_by_xpath('//a[.="text not found"]');

我怎样才能得到上面的代码 不是 打印此警告:

Error while executing command: no such element: Unable to locateelement: //a[.="text not found"]

根据 docs ，如果没有找到元素，该函数会发出“警告”，但有 no warnings;在脚本中不会抑制它。
我怎样才能抑制这个“警告”？

Answer 1

使用 find_element而不是 find_element_by_xpath .前者抛出异常而不是发出警告。您可以使用以下包装器捕获这些异常:

sub nf_find_element {
   my $node;
   if (!eval {
      $node = $web_driver->find_element(@_);
      return 1;  # No exception.
   }) {
      return undef if $@ =~ /Unable to locate element|An element could not be located on the page using the given search parameters/;
      die($@);
   }

   return $node;
}


sub nf_find_elements {
   my $nodes;
   if (!eval {
      $nodes = $web_driver->find_elements(@_);
      return 1;  # No exception.
   }) {
      return undef if $@ =~ /Unable to locate element|An element could not be located on the page using the given search parameters/;
      die($@);
   }

   return wantarray ? @$nodes : $nodes;
}


sub nf_find_child_element {
   my $node;
   if (!eval {
      $node = $web_driver->find_child_element(@_);
      return 1;  # No exception.
   }) {
      return undef if $@ =~ /Unable to locate element|An element could not be located on the page using the given search parameters/;
      die($@);
   }

   return $node;
}


sub nf_find_child_elements {
   my $nodes;
   if (!eval {
      $nodes = $web_driver->find_child_elements(@_);
      return 1;  # No exception.
   }) {
      return undef if $@ =~ /Unable to locate element|An element could not be located on the page using the given search parameters/;
      die($@);
   }

   return wantarray ? @$nodes : $nodes;
}

nf代表“非致命”。
为 Selenium::Chrome 编写，但也适用于 Selenium::Remote::Driver。