Java で、cookie を処理する方法

ずばり、J2SE のドキュメントのページ「cookie サポート」が詳しい。以下のコードを参照のこと。
String protocol = "http";
String hostname = "yourdomain.com";
int port = 80;
String file = "/";

try {

    URL url = new URL(protocol, hostname, port, file);

    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setDoInput(true);    // Input OK
    conn.setDoOutput(true);   // Output OK
    conn.setUseCaches(false); // Cache NG
    conn.setRequestProperty("Content-type",
            "application/x-www-form-urlencoded");
    conn.connect();           // Connect

    boolean isRedirect = HttpURLConnection.getFollowRedirects();

    String cookieValue = null;
    try {
        Map<String, List<String>> headers = conn.getHeaderFields();
        List<String> values = headers.get("Set-Cookie");
        for (Iterator<String> iter = values.iterator(); iter.hasNext();) {
            String v = iter.next();
            if (cookieValue == null)
                cookieValue = v;
            else
                cookieValue = cookieValue + ";" + v;
        }
    } catch (Exception e) {
    }
    System.out.println(this.getClass().getName()
            + ": cookieValue: " + cookieValue);

   conn.close();

} catch (Exception e) {
    e.printStackTrace();
    return false;
}
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Posted on 2006-06-15 by yas |