Android进阶之Cookie的持久化
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1 以下有两种方法
第一种方法是针对Volley来实现的，这种方法比较简单，但是对于有多重类型的Request必须都要按照这种方式来处理，耦合度比较高。
第二种方法只要设置一次，之后所有的请求都会携带cookie。建议采用第二种方法
2 第二种方式：CookieManager 和自定义的CookieStore
CookieManager会帮我们管理本地Java应用的cookie，我们只需要实现自定义 CookieStore就能实现持久化的Cookie。
PersistentCookieStore.java
package com.bld.club.net;import android.content.Context;import android.content.SharedPreferences;import android.text.TextUtils;import android.util.Log;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.Serializable;import java.net.CookieStore;import java.net.HttpCookie;import java.net.URI;import java.net.URISyntaxException;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Locale;import java.util.Map;import java.util.concurrent.ConcurrentHashMap;/** * Cookie持久化 * <p/> * Created by guan on 16/9/20. */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_PREFIX = "cookie_"; private final HashMap<String, ConcurrentHashMap<String, HttpCookie>> 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 HashMap<String, ConcurrentHashMap<String, HttpCookie>>(); // Load any previously stored cookies into the store Map<String, ?> prefsMap = cookiePrefs.getAll(); for (Map.Entry<String, ?> entry : prefsMap.entrySet()) { if (((String) entry.getValue()) != null && !((String) entry.getValue()).startsWith(COOKIE_NAME_PREFIX)) { String[] cookieNames = TextUtils.split((String) entry.getValue(), ","); for (String name : cookieNames) { String encodedCookie = cookiePrefs.getString(COOKIE_NAME_PREFIX + name, null); if (encodedCookie != null) { HttpCookie decodedCookie = decodeCookie(encodedCookie); if (decodedCookie != null) { if (!cookies.containsKey(entry.getKey())) cookies.put(entry.getKey(), new ConcurrentHashMap<String, HttpCookie>()); cookies.get(entry.getKey()).put(name, decodedCookie); } } } } } } @Override public void add(URI uri, HttpCookie cookie) { String name = getCookieToken(uri, cookie); // Save cookie into local store, or remove if expired if (!cookie.hasExpired()) { if (!cookies.containsKey(uri.getHost())) cookies.put(uri.getHost(), new ConcurrentHashMap<String, HttpCookie>()); cookies.get(uri.getHost()).put(name, cookie); } else { if (cookies.containsKey(uri.toString())) cookies.get(uri.getHost()).remove(name); } // Save cookie into persistent store SharedPreferences.Editor prefsWriter = cookiePrefs.edit(); prefsWriter.putString(uri.getHost(), TextUtils.join(",", cookies.get(uri.getHost()).keySet())); prefsWriter.putString(COOKIE_NAME_PREFIX + name, encodeCookie(new SerializableCookie(cookie))); prefsWriter.apply(); } protected String getCookieToken(URI uri, HttpCookie cookie) { return cookie.getName() + cookie.getDomain(); } @Override public List<HttpCookie> get(URI uri) { ArrayList<HttpCookie> ret = new ArrayList<HttpCookie>(); if (cookies.containsKey(uri.getHost())) ret.addAll(cookies.get(uri.getHost()).values()); return ret; } @Override public boolean removeAll() { SharedPreferences.Editor prefsWriter = cookiePrefs.edit(); prefsWriter.clear(); prefsWriter.apply(); cookies.clear(); return true; } @Override public boolean remove(URI uri, HttpCookie cookie) { String name = getCookieToken(uri, cookie); if (cookies.containsKey(uri.getHost()) && cookies.get(uri.getHost()).containsKey(name)) { cookies.get(uri.getHost()).remove(name); SharedPreferences.Editor prefsWriter = cookiePrefs.edit(); if (cookiePrefs.contains(COOKIE_NAME_PREFIX + name)) { prefsWriter.remove(COOKIE_NAME_PREFIX + name); } prefsWriter.putString(uri.getHost(), TextUtils.join(",", cookies.get(uri.getHost()).keySet())); prefsWriter.apply(); return true; } else { return false; } } @Override public List<HttpCookie> getCookies() { ArrayList<HttpCookie> ret = new ArrayList<HttpCookie>(); for (String key : cookies.keySet()) ret.addAll(cookies.get(key).values()); return ret; } @Override public List<URI> getURIs() { ArrayList<URI> ret = new ArrayList<URI>(); for (String key : cookies.keySet()) try { ret.add(new URI(key)); } catch (URISyntaxException e) { e.printStackTrace(); } return ret; } /** * 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 (IOException e) { Log.d(LOG_TAG, "IOException in encodeCookie " + e.toString()); 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 HttpCookie decodeCookie(String cookieString) { byte[] bytes = hexStringToByteArray(cookieString); ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes); HttpCookie cookie = null; try { ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream); cookie = ((SerializableCookie) objectInputStream.readObject()).getCookie(); } catch (IOException e) { Log.d(LOG_TAG, "IOException in decodeCookie " + e.toString()); } catch (ClassNotFoundException e) { Log.d(LOG_TAG, "ClassNotFoundException in decodeCookie " + e.toString()); } 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; } /** * 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 HttpCookie cookie; private transient HttpCookie clientCookie; public SerializableCookie(HttpCookie cookie) { this.cookie = cookie; } public HttpCookie getCookie() { HttpCookie 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.getPath()); out.writeInt(cookie.getVersion()); out.writeBoolean(cookie.getSecure()); } private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException { String name = (String) in.readObject(); String value = (String) in.readObject(); clientCookie = new HttpCookie(name, value); clientCookie.setComment((String) in.readObject()); clientCookie.setDomain((String) in.readObject()); clientCookie.setPath((String) in.readObject()); clientCookie.setVersion(in.readInt()); clientCookie.setSecure(in.readBoolean()); } }}只要在网络请求之前调用这个方法，就可以将自定义的CookieStore设置到CookieManager中，CookieManager会在之后的HTTP请求中自动的帮我们处理response中cookie。通常在Application启动的时候调用上面的设置代码。
App.java
package com.bld.club.application;/** * App * <p/> * Created by guan on 16/9/14. */public class App extends Application { private static App instance; public static App getInstance() { return instance; } @Override public void onCreate() { super.onCreate(); instance = this; NetworkRequest.init(this); initCookie();//初始化Cookie } /** * 初始化Cookie */ private void initCookie() { CookieManager manager = new CookieManager(new PersistentCookieStore(this), CookiePolicy.ACCEPT_ALL); CookieHandler.setDefault(manager); }} 0 0
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