编写XPath表达式验证所有Status元素值均为NEW

Given your sample XML:

<Accounts> 
  <Account> 
    <AccountNumber>12345</AccountNumber> 
    <Status>NEW</Status> 
  </Account> 
  <Account> 
    <AccountNumber>12346</AccountNumber> 
    <Status>NEW</Status> 
  </Account> 
  <Account> 
    <AccountNumber>12347</AccountNumber> 
    <Status>NEW</Status> 
  </Account> 
</Accounts>

Here are a few practical XPath expressions to confirm every <Status> element has the value NEW:

Option 1: Check for absence of non-NEW Status elements (XPath 1.0 compatible) #

This expression returns true if there are no <Status> elements with a value other than NEW, which means all are valid:

boolean(not(/Accounts/Account/Status[text() != 'NEW']))

How it works:

• /Accounts/Account/Status[text() != 'NEW'] selects any Status element that doesn't match "NEW"
• not(...) negates that selection (returns true if no such elements exist)
• boolean(...) ensures the result is a clear boolean value (true/false)

Option 2: Compare counts of total vs valid Status elements (XPath 1.0 compatible) #

This checks if the total number of <Status> elements equals the number of those with value NEW:

count(/Accounts/Account/Status) = count(/Accounts/Account/Status[text() = 'NEW'])

This is straightforward—if both counts match, every Status is "NEW".

Option 3: Explicit "every" check (XPath 2.0 and above) #

If you're using an XPath 2.0+ compliant tool, this more readable expression directly asserts that every Status element satisfies the condition:

every $status in /Accounts/Account/Status satisfies $status/text() = 'NEW'

This is the most intuitive option if your environment supports XPath 2.0 or higher.

All of these will return true for your sample XML, and false if any <Status> element has a different value (like "ACTIVE" or "INACTIVE").

内容的提问来源于stack exchange，提问作者Pramod S