Android Webkit CookieManager: 从SQLite3数据库加载Cookies
创始人
2024-08-19 06:30:13
0

要从SQLite3数据库加载Cookies,可以使用Android的CookieManager类和SQLiteOpenHelper类来实现。下面是一个示例代码:

首先,在AndroidManifest.xml文件中添加以下权限:




然后,创建一个名为CookieDatabaseHelper的SQLiteOpenHelper类,用于管理SQLite3数据库:

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class CookieDatabaseHelper extends SQLiteOpenHelper {
    private static final String DATABASE_NAME = "cookies.db";
    private static final int DATABASE_VERSION = 1;

    public CookieDatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("CREATE TABLE IF NOT EXISTS cookies ("
                + "_id INTEGER PRIMARY KEY AUTOINCREMENT,"
                + "name TEXT NOT NULL,"
                + "value TEXT NOT NULL,"
                + "domain TEXT NOT NULL,"
                + "path TEXT NOT NULL,"
                + "expires INTEGER NOT NULL,"
                + "secure INTEGER NOT NULL,"
                + "httponly INTEGER NOT NULL"
                + ")");
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS cookies");
        onCreate(db);
    }
}

接下来,在需要加载Cookies的地方,使用CookieManager和CookieDatabaseHelper类来加载Cookies:

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.webkit.CookieManager;
import android.webkit.CookieSyncManager;

public class LoadCookies {
    public static void loadCookies(Context context) {
        CookieManager cookieManager = CookieManager.getInstance();
        CookieSyncManager.createInstance(context);

        CookieDatabaseHelper dbHelper = new CookieDatabaseHelper(context);
        SQLiteDatabase db = dbHelper.getReadableDatabase();

        String[] columns = {"name", "value", "domain", "path", "expires", "secure", "httponly"};
        Cursor cursor = db.query("cookies", columns, null, null, null, null, null);

        if (cursor.moveToFirst()) {
            do {
                String name = cursor.getString(cursor.getColumnIndex("name"));
                String value = cursor.getString(cursor.getColumnIndex("value"));
                String domain = cursor.getString(cursor.getColumnIndex("domain"));
                String path = cursor.getString(cursor.getColumnIndex("path"));
                long expires = cursor.getLong(cursor.getColumnIndex("expires"));
                int secure = cursor.getInt(cursor.getColumnIndex("secure"));
                int httpOnly = cursor.getInt(cursor.getColumnIndex("httponly"));

                cookieManager.setCookie(domain, name + "=" + value);
            } while (cursor.moveToNext());
        }

        cursor.close();
        db.close();
        dbHelper.close();

        CookieSyncManager.getInstance().sync();
    }
}

最后,在需要加载Cookies的地方调用LoadCookies.loadCookies(context)即可加载Cookies:

LoadCookies.loadCookies(context);

请注意,这只是一个示例代码,并不考虑数据验证和错误处理。在实际应用中,您可能需要根据实际需求进行适当的修改和优化。

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