使用HTTPUrlConnection时如何保留cookie？

Question

我已经开始使用推荐HTTPUrlConnection并离开了DefaultHTTPClient.我无法粘合在一起的一件事是使用持久性cookie存储.我想简单地将自定义cookie处理程序/管理器附加到我的连接以存储cookie.Android文档并不是非常有用,因为它包含了两行有关cookie的主题.

我以前一直在使用LoopJ PersistentCookieStore,而且效果非常好.

有关如何在Android中设置持久性cookie存储的任何想法,我可以附加到我HTTPUrlConnection自动保存和检索cookie？

谢谢

Answer 1

它花了我几个小时,但我设法自己建立一个自定义cookie存储.

你必须这样做:

public class application extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
       CookieManager cmrCookieMan = new CookieManager(new MyCookieStore(this.objContext), CookiePolicy.ACCEPT_ALL);
       CookieHandler.setDefault(cmrCookieMan);
       }
    }

这是实际的存储空间:

/*
 * This is a custom cookie storage for the application. This
 * will store all the cookies to the shared preferences so that it persists
 * across application restarts.
 */
class MyCookieStore implements CookieStore {

    /*
     * The memory storage of the cookies
     */
    private Map<URI, List<HttpCookie>> mapCookies = new HashMap<URI, List<HttpCookie>>();
    /*
     * The instance of the shared preferences
     */
    private final SharedPreferences spePreferences;

    /*
     * @see java.net.CookieStore#add(java.net.URI, java.net.HttpCookie)
     */
    public void add(URI uri, HttpCookie cookie) {

        System.out.println("add");
        System.out.println(cookie.toString());

        List<HttpCookie> cookies = mapCookies.get(uri);
        if (cookies == null) {
            cookies = new ArrayList<HttpCookie>();
            mapCookies.put(uri, cookies);
        }
        cookies.add(cookie);

        Editor ediWriter = spePreferences.edit();
        HashSet<String> setCookies = new HashSet<String>();
        setCookies.add(cookie.toString());
        ediWriter.putStringSet(uri.toString(), spePreferences.getStringSet(uri.toString(), setCookies));
        ediWriter.commit();

    }

   /*
    * Constructor
    * 
    * @param  ctxContext the context of the Activity
    */
    @SuppressWarnings("unchecked")
    public MyCookieStore(Context ctxContext) {

        spePreferences = ctxContext.getSharedPreferences("CookiePrefsFile", 0);
        Map<String, ?> prefsMap = spePreferences.getAll();

        for(Map.Entry<String, ?> entry : prefsMap.entrySet()) {

            for (String strCookie : (HashSet<String>) entry.getValue()) {

                if (!mapCookies.containsKey(entry.getKey())) {

                    List<HttpCookie> lstCookies = new ArrayList<HttpCookie>();
                    lstCookies.addAll(HttpCookie.parse(strCookie));

                    try {

                        mapCookies.put(new URI(entry.getKey()), lstCookies);

                    } catch (URISyntaxException e) {

                        e.printStackTrace();

                    }

                } else {

                    List<HttpCookie> lstCookies = mapCookies.get(entry.getKey());
                    lstCookies.addAll(HttpCookie.parse(strCookie));

                    try {

                        mapCookies.put(new URI(entry.getKey()), lstCookies);

                    } catch (URISyntaxException e) {

                        e.printStackTrace();

                    }

                }

                System.out.println(entry.getKey() + ": " + strCookie);

            }

        }

    }

    /*
     * @see java.net.CookieStore#get(java.net.URI)
     */
    public List<HttpCookie> get(URI uri) {

        List<HttpCookie> lstCookies = mapCookies.get(uri);

        if (lstCookies == null)
            mapCookies.put(uri, new ArrayList<HttpCookie>());

        return mapCookies.get(uri);

    }

    /*
     * @see java.net.CookieStore#removeAll()
     */
    public boolean removeAll() {

        mapCookies.clear();
        return true;

    }        

    /*
     * @see java.net.CookieStore#getCookies()
     */
    public List<HttpCookie> getCookies() {

        Collection<List<HttpCookie>> values = mapCookies.values();

        List<HttpCookie> result = new ArrayList<HttpCookie>();
        for (List<HttpCookie> value : values) {                
            result.addAll(value);                
        }

        return result;

    }

    /*
     * @see java.net.CookieStore#getURIs()
     */
    public List<URI> getURIs() {

        Set<URI> keys = mapCookies.keySet();
        return new ArrayList<URI>(keys);

    }

    /*
     * @see java.net.CookieStore#remove(java.net.URI, java.net.HttpCookie)
     */
    public boolean remove(URI uri, HttpCookie cookie) {

        List<HttpCookie> lstCookies = mapCookies.get(uri);

        if (lstCookies == null)
            return false;

        return lstCookies.remove(cookie);

    }

}