title: Migrating from Spring security 2.0 to Spring security 3.0.7
body: <p>I am having a project which uses Spring framework(migrated from 2.0 to 3.0.7) and Spring security 2.0. And I want to use Spring security 3.0.7. I have used MessageDigestPasswordEncoder, SecurityContextHolder. But now I've added Spring security 3.0.7 jar files to my project but it is showing some compilation issues to above classes.</p>
  
  <p>I need help for migration. </p>
  
  <p>Thanks in advance.</p>