Android拓展okhttp3.Cookie实现Cookie管理(缓存、持久化、移除...)

默认的okhttp3.Cookie没有实现序列化和无参构造器，序列化报错：

com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `okhttp3.Cookie` (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)

拓展开始

SerializableOkHttpCookies

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

import okhttp3.Cookie;

/**
 * - 将Cookie对象输出为ObjectStream
 * - 将ObjectStream序列化成Cookie对象
 *
 * @author Zhaopo Liu
 */
public class SerializableOkHttpCookies implements Serializable {

    private transient final Cookie cookies;
    private transient Cookie clientCookies;

    public SerializableOkHttpCookies(Cookie cookies) {
        this.cookies = cookies;
    }

    public Cookie getCookies() {
        Cookie bestCookies = cookies;
        if (clientCookies != null) {
            bestCookies = clientCookies;
        }
        return bestCookies;
    }

    private void writeObject(ObjectOutputStream out) throws IOException {
        out.writeObject(cookies.name());
        out.writeObject(cookies.value());
        out.writeLong(cookies.expiresAt());
        out.writeObject(cookies.domain());
        out.writeObject(cookies.path());
        out.writeBoolean(cookies.secure());
        out.writeBoolean(cookies.httpOnly());
        out.writeBoolean(cookies.hostOnly());
        out.writeBoolean(cookies.persistent());
    }

    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
        String name = (String) in.readObject();
        String value = (String) in.readObject();
        long expiresAt = in.readLong();
        String domain = (String) in.readObject();
        String path = (String) in.readObject();
        boolean secure = in.readBoolean();
        boolean httpOnly = in.readBoolean();
        boolean hostOnly = in.readBoolean();
        boolean persistent = in.readBoolean();
        Cookie.Builder builder = new Cookie.Builder();
        builder = builder.name(name);
        builder = builder.value(value);
        builder = builder.expiresAt(expiresAt);
        builder = hostOnly ? builder.hostOnlyDomain(domain) : builder.domain(domain);
        builder = builder.path(path);
        builder = secure ? builder.secure() : builder;
        builder = httpOnly ? builder.httpOnly() : builder;
        clientCookies =builder.build();
    }
}

PersistentCookieStore

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.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import okhttp3.Cookie;
import okhttp3.HttpUrl;

/**
 * 根据一定的规则去缓存或者获取Cookie
 *
 * @author Zhaopo Liu
 */
public class PersistentCookieStore {
    private static final String LOG_TAG = "PersistentCookieStore";
    private static final String COOKIE_PREFS = "Cookies_Prefs";

    private final Map<String, ConcurrentHashMap<String, Cookie>> cookies;
    private final SharedPreferences cookiePrefs;

    public PersistentCookieStore(Context context) {
        cookiePrefs = context.getSharedPreferences(COOKIE_PREFS, 0);
        cookies = new HashMap<>();

        // 将持久化的cookies缓存到内存中，即 map cookies
        Map<String, ?> prefsMap = cookiePrefs.getAll();
        for (Map.Entry<String, ?> entry : prefsMap.entrySet()) {
            String[] cookieNames = TextUtils.split((String) entry.getValue(), ",");
            for (String name : cookieNames) {
                String encodedCookie = cookiePrefs.getString(name, null);
                if (encodedCookie != null) {
                    Cookie decodedCookie = decodeCookie(encodedCookie);
                    if (decodedCookie != null) {
                        if (!cookies.containsKey(entry.getKey())) {
                            cookies.put(entry.getKey(), new ConcurrentHashMap<String, Cookie>());
                        }
                        cookies.get(entry.getKey()).put(name, decodedCookie);
                    }
                }
            }
        }
    }

    protected String getCookieToken(Cookie cookie) {
        return cookie.name() + "@" + cookie.domain();
    }

    public void add(HttpUrl url, Cookie cookie) {
        String name = getCookieToken(cookie);

        // 将cookies缓存到内存中，如果缓存过期，就重置此cookie
        if (!cookie.persistent()) {
            if (!cookies.containsKey(url.host())) {
                cookies.put(url.host(), new ConcurrentHashMap<>());
            }
            cookies.get(url.host()).put(name, cookie);
        } else {
            if (cookies.containsKey(url.host())) {
                cookies.get(url.host()).remove(name);
            }
        }

        // 将cookies持久化到本地
        SharedPreferences.Editor prefsWriter = cookiePrefs.edit();
        prefsWriter.putString(url.host(), TextUtils.join(",", cookies.get(url.host()).keySet()));
        prefsWriter.putString(name, encodeCookie(new SerializableOkHttpCookies(cookie)));
        prefsWriter.apply();
    }

    public List<Cookie> get(HttpUrl url) {
        ArrayList<Cookie> ret = new ArrayList<>();
        if (cookies.containsKey(url.host()))
            ret.addAll(cookies.get(url.host()).values());
        return ret;
    }

    public boolean removeAll() {
        SharedPreferences.Editor prefsWriter = cookiePrefs.edit();
        prefsWriter.clear();
        prefsWriter.apply();
        cookies.clear();
        return true;
    }

    public boolean remove(HttpUrl url, Cookie cookie) {
        String name = getCookieToken(cookie);

        if (cookies.containsKey(url.host()) && cookies.get(url.host()).containsKey(name)) {
            cookies.get(url.host()).remove(name);

            SharedPreferences.Editor prefsWriter = cookiePrefs.edit();
            if (cookiePrefs.contains(name)) {
                prefsWriter.remove(name);
            }
            prefsWriter.putString(url.host(), TextUtils.join(",", cookies.get(url.host()).keySet()));
            prefsWriter.apply();

            return true;
        } else {
            return false;
        }
    }

    public List<Cookie> getCookies() {
        ArrayList<Cookie> ret = new ArrayList<>();
        for (String key : cookies.keySet())
            ret.addAll(cookies.get(key).values());

        return ret;
    }

    /**
     * cookies 序列化成 string
     *
     * @param cookie 要序列化的cookie
     * @return 序列化之后的string
     */
    protected String encodeCookie(SerializableOkHttpCookies 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);
            return null;
        }

        return byteArrayToHexString(os.toByteArray());
    }

    /**
     * 将字符串反序列化成cookies
     *
     * @param cookieString cookies string
     * @return cookie object
     */
    protected Cookie decodeCookie(String cookieString) {
        byte[] bytes = hexStringToByteArray(cookieString);
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
        Cookie cookie = null;
        try {
            ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
            cookie = ((SerializableOkHttpCookies) objectInputStream.readObject()).getCookies();
        } catch (IOException e) {
            Log.d(LOG_TAG, "IOException in decodeCookie", e);
        } catch (ClassNotFoundException e) {
            Log.d(LOG_TAG, "ClassNotFoundException in decodeCookie", e);
        }

        return cookie;
    }

    /**
     * 二进制数组转十六进制字符串
     *
     * @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);
    }

    /**
     * 十六进制字符串转二进制数组
     *
     * @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;
    }
}

CookiesManager

package com.withive.power_grid.api.cookie;

import com.withive.power_grid.manager.AppManager;

import java.util.List;

import okhttp3.Cookie;
import okhttp3.CookieJar;
import okhttp3.HttpUrl;

/**
 * 拓展CookieJar
 *
 * @author Zhaopo Liu
 */
public class CookiesManager implements CookieJar {

    private final PersistentCookieStore cookieStore = new PersistentCookieStore(
            AppManager.getInstance().getTopActivity().getApplicationContext());

    @Override
    public void saveFromResponse(HttpUrl url, List<Cookie> cookies) {
        if (cookies != null && cookies.size() > 0) {
            for (Cookie item : cookies) {
                cookieStore.add(url, item);
            }
        }
    }

    @Override
    public List<Cookie> loadForRequest(HttpUrl url) {
        List<Cookie> cookies = cookieStore.get(url);
        return cookies;
    }
}

如何使用？

// 设置cookieJar即可
.cookieJar(new CookiesManager());

import com.withive.power_grid.api.cookie.CookiesManager;
import com.withive.power_grid.utils.JsonHelper;
import okhttp3.Interceptor;
import okhttp3.OkHttpClient;
import okhttp3.logging.HttpLoggingInterceptor;
import okhttp3.logging.HttpLoggingInterceptor.Level;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava3.RxJava3CallAdapterFactory;
import retrofit2.converter.jackson.JacksonConverterFactory;
import retrofit2.converter.scalars.ScalarsConverterFactory;

public class ApiHelper {

    private static final String API_SERVICE_URL = "http://Ip:Port";

    private static Retrofit retrofit;

    static {
        OkHttpClient.Builder httpClientBuilder = new OkHttpClient().newBuilder();

        // 请求参数拦截器
        Interceptor logging = new HttpLoggingInterceptor()
                .setLevel(Level.BODY);

        httpClientBuilder
                .addInterceptor(logging)
                .cookieJar(new CookiesManager()); // 使用拓展的CookieJar

        retrofit = new Retrofit.Builder()
                .client(httpClientBuilder.build())
                .baseUrl(API_SERVICE_URL)
                .addConverterFactory(ScalarsConverterFactory.create())
                .addConverterFactory(JacksonConverterFactory.create(JsonHelper.getMapper()))
                .addCallAdapterFactory(RxJava3CallAdapterFactory.create())
                .build();
    }

    public static <T> T getService(Class<T> service) {
        return retrofit.create(service);
    }

}

如何退出？

// 清除所有cookie
PersistentCookieStore persistentCookieStore = new PersistentCookieStore(this);
persistentCookieStore.removeAll();