Android持久化保存cookie的方法

DefaultHttpClient httpclient = new DefaultHttpClient(); 
HttpGet httpget = new HttpGet("http://www.hlovey.com"); 
HttpResponse response = httpclient.execute(httpget); 
HttpEntity entity = response.getEntity(); 
List<Cookie> cookies = httpclient.getCookieStore().getCookies(); 

HttpPost httpPost = new HttpPost(url); 
List<NameValuePair> formparams = new ArrayList<NameValuePair>(); 
formparams.add(new BasicNameValuePair("id", userid)); 
formparams.add(new BasicNameValuePair("passwd", passwd)); 
UrlEncodedFormEntity entity; 
try { 
 entity = new UrlEncodedFormEntity(formparams, mobileSMTHEncoding); 
} catch (UnsupportedEncodingException e1) { 
 return 3; 
} 
httpPost.setEntity(entity); 
httpPost.setHeader("User-Agent", userAgent); 
HttpResponse response = httpClient.execute(httpPost); 

 package com.smthbest.smth.util; 
 import java.util.Locale; 
 import android.content.Context; 
 import android.content.SharedPreferences; 
 import android.text.TextUtils; 
 import android.util.Log; 
 import org.apache.http.client.CookieStore; 
 import org.apache.http.cookie.Cookie; 
 import java.io.ByteArrayInputStream; 
 import java.io.ByteArrayOutputStream; 
 import java.io.ObjectInputStream; 
 import java.io.ObjectOutputStream; 
 import java.util.ArrayList; 
 import java.util.Date; 
 import java.util.List; 
 import java.util.Locale; 
 import java.util.concurrent.ConcurrentHashMap; 
ic class PersistentCookieStore implements CookieStore { 
private static final String LOG_TAG = "PersistentCookieStore"; 
private static final String COOKIE_PREFS = "CookiePrefsFile"; 
private static final String COOKIE_NAME_STORE = "names"; 
private static final String COOKIE_NAME_PREFIX = "cookie_"; 
private boolean omitNonPersistentCookies = false; 
private final ConcurrentHashMap<String, Cookie> cookies; 
private final SharedPreferences cookiePrefs; 
 
/** 
 * Construct a persistent cookie store. 
 * 
 * @param context Context to attach cookie store to 
 */ 
public PersistentCookieStore(Context context) { 
 cookiePrefs = context.getSharedPreferences(COOKIE_PREFS, 0); 
 cookies = new ConcurrentHashMap<String, Cookie>(); 
 
 // Load any previously stored cookies into the store 
 String storedCookieNames = cookiePrefs.getString(COOKIE_NAME_STORE, null); 
 if (storedCookieNames != null) { 
 String[] cookieNames = TextUtils.split(storedCookieNames, ","); 
 for (String name : cookieNames) { 
  String encodedCookie = cookiePrefs.getString(COOKIE_NAME_PREFIX + name, null); 
  if (encodedCookie != null) { 
  Cookie decodedCookie = decodeCookie(encodedCookie); 
  if (decodedCookie != null) { 
   cookies.put(name, decodedCookie); 
  } 
  } 
 } 
 
 // Clear out expired cookies 
 clearExpired(new Date()); 
 } 
} 
 
@Override 
public void addCookie(Cookie cookie) { 
 if (omitNonPersistentCookies && !cookie.isPersistent()) 
 return; 
 String name = cookie.getName() + cookie.getDomain(); 
 
 // Save cookie into local store, or remove if expired 
 if (!cookie.isExpired(new Date())) { 
 cookies.put(name, cookie); 
 } else { 
 cookies.remove(name); 
 } 
 
 // Save cookie into persistent store 
 SharedPreferences.Editor prefsWriter = cookiePrefs.edit(); 
 prefsWriter.putString(COOKIE_NAME_STORE, TextUtils.join(",", cookies.keySet())); 
 prefsWriter.putString(COOKIE_NAME_PREFIX + name, encodeCookie(new SerializableCookie(cookie))); 
 prefsWriter.commit(); 
} 
 
@Override 
public void clear() { 
 // Clear cookies from persistent store 
 SharedPreferences.Editor prefsWriter = cookiePrefs.edit(); 
 for (String name : cookies.keySet()) { 
 prefsWriter.remove(COOKIE_NAME_PREFIX + name); 
 } 
 prefsWriter.remove(COOKIE_NAME_STORE); 
 prefsWriter.commit(); 
 
 // Clear cookies from local store 
 cookies.clear(); 
} 
 
@Override 
public boolean clearExpired(Date date) { 
 boolean clearedAny = false; 
 SharedPreferences.Editor prefsWriter = cookiePrefs.edit(); 
 
 for (ConcurrentHashMap.Entry<String, Cookie> entry : cookies.entrySet()) { 
 String name = entry.getKey(); 
 Cookie cookie = entry.getValue(); 
 if (cookie.isExpired(date)) { 
  // Clear cookies from local store 
  cookies.remove(name); 
 
  // Clear cookies from persistent store 
  prefsWriter.remove(COOKIE_NAME_PREFIX + name); 
 
  // We've cleared at least one 
  clearedAny = true; 
 } 
 } 
 
 // Update names in persistent store 
 if (clearedAny) { 
 prefsWriter.putString(COOKIE_NAME_STORE, TextUtils.join(",", cookies.keySet())); 
 } 
 prefsWriter.commit(); 
 
 return clearedAny; 
} 
 
@Override 
public List<Cookie> getCookies() { 
 return new ArrayList<Cookie>(cookies.values()); 
} 
 
/** 
 * Will make PersistentCookieStore instance ignore Cookies, which are non-persistent by 
 * signature (`Cookie.isPersistent`) 
 * 
 * @param omitNonPersistentCookies true if non-persistent cookies should be omited 
 */ 
public void setOmitNonPersistentCookies(boolean omitNonPersistentCookies) { 
 this.omitNonPersistentCookies = omitNonPersistentCookies; 
} 
 
/** 
 * Non-standard helper method, to delete cookie 
 * 
 * @param cookie cookie to be removed 
 */ 
public void deleteCookie(Cookie cookie) { 
 String name = cookie.getName(); 
 cookies.remove(name); 
 SharedPreferences.Editor prefsWriter = cookiePrefs.edit(); 
 prefsWriter.remove(COOKIE_NAME_PREFIX + name); 
 prefsWriter.commit(); 
} 
 
/** 
 * Serializes Cookie object into String 
 * 
 * @param cookie cookie to be encoded, can be null 
 * @return cookie encoded as String 
 */ 
protected String encodeCookie(SerializableCookie cookie) { 
 if (cookie == null) 
 return null; 
 ByteArrayOutputStream os = new ByteArrayOutputStream(); 
 try { 
 ObjectOutputStream outputStream = new ObjectOutputStream(os); 
 outputStream.writeObject(cookie); 
 } catch (Exception e) { 
 return null; 
 } 
 
 return byteArrayToHexString(os.toByteArray()); 
} 
 
/** 
 * Returns cookie decoded from cookie string 
 * 
 * @param cookieString string of cookie as returned from http request 
 * @return decoded cookie or null if exception occured 
 */ 
protected Cookie decodeCookie(String cookieString) { 
 byte[] bytes = hexStringToByteArray(cookieString); 
 ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes); 
 Cookie cookie = null; 
 try { 
 ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream); 
 cookie = ((SerializableCookie) objectInputStream.readObject()).getCookie(); 
 } catch (Exception exception) { 
 Log.d(LOG_TAG, "decodeCookie failed", exception); 
 } 
 
 return cookie; 
} 
 
/** 
 * Using some super basic byte array <-> hex conversions so we don't have to rely on any 
 * large Base64 libraries. Can be overridden if you like! 
 * 
 * @param bytes byte array to be converted 
 * @return string containing hex values 
 */ 
protected String byteArrayToHexString(byte[] bytes) { 
 StringBuilder sb = new StringBuilder(bytes.length * 2); 
 for (byte element : bytes) { 
 int v = element & 0xff; 
 if (v < 16) { 
  sb.append('0'); 
 } 
 sb.append(Integer.toHexString(v)); 
 } 
 return sb.toString().toUpperCase(Locale.US); 
} 
 
/** 
 * Converts hex values from strings to byte arra 
 * 
 * @param hexString string of hex-encoded values 
 * @return decoded byte array 
 */ 
protected byte[] hexStringToByteArray(String hexString) { 
 int len = hexString.length(); 
 byte[] data = new byte[len / 2]; 
 for (int i = 0; i < len; i += 2) { 
 data[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4) + Character.digit(hexString.charAt(i + 1), 16)); 
 } 
 return data; 
} 

PersistentCookieStore myCookieStore = App.getInstance().getPersistentCookieStore(); 
List<Cookie> cookies = httpClient.getCookieStore().getCookies(); 
for (Cookie cookie:cookies){ 
 myCookieStore.addCookie(cookie); 
} 

PersistentCookieStore cookieStore = new PersistentCookieStore(SmthBestApp.getInstance().getApplicationContext()); 
httpClient.setCookieStore(cookieStore); 
HttpResponse response = httpClient.execute(httpget);