android 持久化保存cookie
2014-06-10 17:42
471 查看
在解析网页信息的时候,需要登录后才能访问,所以使用httpclient模拟登录,然后把cookie保存下来,以供下一次访问使用,这时就需要持久化cookie中的内容。
一、请求网络获取cookie
先看一下下面的代码:
保存cookie有两种方式一种是数据库,另一种是SharedPreferences,其中http://blog.csdn.net/junjieking/article/details/7658551是使用数据库来保存的,这里我是使用SharedPreferences保存。
三、cookie的使用
一、请求网络获取cookie
先看一下下面的代码:
<span style="font-size:14px;"><span style="white-space:pre"> </span> 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();</span>Post模拟登录
<span style="white-space:pre"> </span>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);二、保存cookie
保存cookie有两种方式一种是数据库,另一种是SharedPreferences,其中http://blog.csdn.net/junjieking/article/details/7658551是使用数据库来保存的,这里我是使用SharedPreferences保存。
<span style="white-space:pre"> </span>package com.smthbest.smth.util; <span style="white-space:pre"> </span>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; public 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; } }使用PersistentCookieStore来存储cookie,首先最好把PersistentCookieStore放在Application获取其他的地方,取得唯一实例,保存cookie是在登录成功后,从下面代码获取保存。
<span style="white-space:pre"> </span>PersistentCookieStore myCookieStore = App.getInstance().getPersistentCookieStore(); List<Cookie> cookies = httpClient.getCookieStore().getCookies(); for (Cookie cookie:cookies){ myCookieStore.addCookie(cookie); }
三、cookie的使用
PersistentCookieStore cookieStore = new PersistentCookieStore(SmthBestApp.getInstance().getApplicationContext()); httpClient.setCookieStore(cookieStore); HttpResponse response = httpClient.execute(httpget);这样就可以免再次登录了。
四、SerializableCookie
/** * A wrapper class around {@link org.apache.http.cookie.Cookie} and/or {@link org.apache.http.impl.cookie.BasicClientCookie} designed for use in {@link * PersistentCookieStore}. */ public class SerializableCookie implements Serializable { private static final long serialVersionUID = 6374381828722046732L; private transient final Cookie cookie; private transient BasicClientCookie clientCookie; public SerializableCookie(Cookie cookie) { this.cookie = cookie; } public Cookie getCookie() { Cookie bestCookie = cookie; if (clientCookie != null) { bestCookie = clientCookie; } return bestCookie; } private void writeObject(ObjectOutputStream out) throws IOException { out.writeObject(cookie.getName()); out.writeObject(cookie.getValue()); out.writeObject(cookie.getComment()); out.writeObject(cookie.getDomain()); out.writeObject(cookie.getExpiryDate()); out.writeObject(cookie.getPath()); out.writeInt(cookie.getVersion()); out.writeBoolean(cookie.isSecure()); } private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException { String name = (String) in.readObject(); String value = (String) in.readObject(); clientCookie = new BasicClientCookie(name, value); clientCookie.setComment((String) in.readObject()); clientCookie.setDomain((String) in.readObject()); clientCookie.setExpiryDate((Date) in.readObject()); clientCookie.setPath((String) in.readObject()); clientCookie.setVersion(in.readInt()); clientCookie.setSecure(in.readBoolean()); } }
相关文章推荐
- Android持久化保存cookie
- Android持久化保存cookie
- Android持久化保存cookie
- Android持久化保存cookie的方法
- android 持久化保存cookie
- Android持久化保存cookie
- Android持久化保存cookie
- android 持久化保存cookie
- Android之CookieStore的持久化【转载】
- android之CookieSyncManager保存Cookie
- Android 网页登录 POST 请求 保存 COOKIE
- Android02_02喜爱的数据持久化,保存数据到rom文件
- android开发中webview保存cookie问题的解决
- Android 访问WebService登录通过Cookie保存登录状态
- android开发中webview保存cookie问题的解决
- Android AsyncHttpClient登录保存cookie和读写cookie
- Android之CookieStore的持久化【原创】
- Android 网页登录 POST 请求 保存 COOKIE
- Android 网页登录 POST 请求 保存 COOKIE
- android webview 保存cookie