如何将以下PHP curl代码转换为JAVA HttpURLConnection？

Question

如何将以下PHP curl代码转换为JAVA HttpURLConnection？

 $username = $_POST['username']; 
    $headers = array( 
    "Host: mail.google.com", 
    "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4", 
    "Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5", 
    "Accept-Language: en-us,en;q=0.5", 
    "Accept-Encoding: text", # No gzip, it only clutters your code! 
    "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7", 
    "Date: ".date(DATE_RFC822) 
    ); 
    $c = curl_init('https://mail.google.com/mail/feed/atom'); 
    curl_setopt($c, CURLOPT_HTTPAUTH, CURLAUTH_ANY); // use authentication 
    curl_setopt($c, CURLOPT_HTTPHEADER, $headers); // send the headers 
    curl_setopt($c, CURLOPT_RETURNTRANSFER, 1); // We need to fetch something from a string, so no direct output! 
    curl_setopt($c, CURLOPT_FOLLOWLOCATION, 1); // we get redirected, so follow 
    curl_setopt($c, CURLOPT_SSL_VERIFYPEER, 0); 
    curl_setopt($c, CURLOPT_SSL_VERIFYHOST, 1); 
    curl_setopt($c, CURLOPT_UNRESTRICTED_AUTH, 1); // always stay authorised 
    $wrong = curl_exec($c); // Get it 
    curl_close($c); // Close the curl stream 

Answer 1

使用Commons Http Client库，它还支持HttpGet，HttpPost，还可以添加Request头等。