java-regex：如何为两位数数字写正则表达式

Question

I have password field with ID locator "j_idt90". However the ID is dynamic and the two digits in the preceeding changes everytime login page loads.

Iam using automation to capture this field and used below regular expression but it is failing. Do, let me know where I'm failing to identify the element.

Reg Exp - driver.findElement(By.id("j_idt[0-9]{2}"));

Answer 1

You can locate the element by XPath instead. Assuming that there is only one password field in your page, the following snippet should work:

driver.findElement(By.xpath("//input[@type='password']"));

Answer 2

By.id does not take a regular expression, but a simple string as argument.

See here: https://seleniumhq.github.io/selenium/docs/api/java/org/openqa/selenium/By.html#id-java.lang.String-

Answer 3

Similar to Boni's answer, but you could try using the xpath function starts-with

driver.findElement(By.xpath("//input[starts-with(@id, 'j_idt')]"));

This will search for any "input" elements which have an ID starting with the text 'j_idt'. See also http://www.w3schools.com/xml/xsl_functions.asp