title: Spring and Soap API error: "Unable to validate using XSD: Your JAXP provider"
body: <p>I had a Spring based java app that connected to PayPal using their Soap API. It was working fine with Jetty, but when I tried to deploy it with Tomcat, I got the following error:</p>
  
  <blockquote>
    <p>Unable to validate using XSD: Your JAXP provider...</p>
  </blockquote>
  
  <p>How can I solve this problem? I tried updating to the latest xerces jar files, as the error suggested, but that didn't help.</p>