※ 本文轉寄自 tomin.bbs@tomin.twbbs.org

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http://stackoverflow.com/questions/251532/
how-can-i-determine-if-a-url-redirects

URL url = new URL ('http://google.com')
HttpURLConnection conn = url.openConnection()
conn.followRedirects = false
conn.requestMethod = 'HEAD'
println conn.responseCode
// Not ideal - should check response code too
if (conn.headerFields.'Location') {
  println conn.headerFields.'Location'
}

301
["http://www.google.com/"]


http://www.java-forums.org/new-java/23722-http-url-301-redirect.html

http://www.webconfs.com/how-to-redirect-a-webpage.php

http://en.wikipedia.org/wiki/URL_redirection

http://stackoverflow.com/questions/704956/
getting-the-redirected-url-from-the-original-url

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