做了一个android网络应用,要求用自己实现的webview去访问web网站,并且在远程登录成功之后把COOKIE写入到手机,保留用作以后的自动登录。找了好多资料。发觉读取COOKIEs倒还用的很普遍,可是通过程序写COOKIE却没有太多资料。
先来看一下如何读取COOKIE吧:
try { DefaultHttpClient httpclient = new DefaultHttpClient(); HttpGet httpget = new HttpGet("http://www.hlovey.com"); HttpResponse respOnse= httpclient.execute(httpget); HttpEntity entity = response.getEntity(); ListCOOKIEs = httpclient.getCOOKIEStore().getCOOKIEs(); if (entity != null) { entity.consumeContent(); } if (COOKIEs.isEmpty()) { Log.i(TAG, "NONE"); } else { for (int i = 0; i
通过分析com.android.browser的源码,发现android默认的browser增加COOKIE是在数据库中增加记录,和window不同,win是采用一个txt文本文件的形式来存储COOKIE。而android是将COOKIE存储在数据库中。具体的介绍在《android COOKIE存储位置》一文中有介绍。我们都知道,android每个应用程序的存储空间都是独立的。不管使用preference还是database存储,都会在每个/data/data/package name/下面进行存储(preference存储在/data/data/package name/shared_prefs/xxxx.xml)。前面也说到COOKIE是存在数据库中,那么如果采用非浏览器访问网络需要保留COOKIE的话我们就应该在database中建立COOKIEs表,并且存入相应的COOKIEs数据。仿照默认broswer的代码:
/**声明一些数据库操作的常量*/ private static SQLiteDatabase mDatabase = null; private static final String DATABASE_FILE = "webview.db"; private static final String COOKIES_NAME_COL = "name"; private static final String COOKIES_VALUE_COL = "value"; private static final String COOKIES_DOMAIN_COL = "domain"; private static final String COOKIES_PATH_COL = "path"; private static final String COOKIES_EXPIRES_COL = "expires"; private static final String COOKIES_SECURE_COL = "secure"; mDatabase = LoginApiActivity.this.openOrCreateDatabase(DATABASE_FILE, 0, null); //创建COOKIE数据库 if (mDatabase != null) { // COOKIEs mDatabase.execSQL("CREATE TABLE IF NOT EXISTS COOKIEs " + " (_id INTEGER PRIMARY KEY, " + COOKIES_NAME_COL + " TEXT, " + COOKIES_VALUE_COL + " TEXT, " + COOKIES_DOMAIN_COL + " TEXT, " + COOKIES_PATH_COL + " TEXT, " + COOKIES_EXPIRES_COL + " INTEGER, " + COOKIES_SECURE_COL + " INTEGER" + ");"); mDatabase.execSQL("CREATE INDEX IF NOT EXISTS COOKIEsIndex ON " + "COOKIEs" + " (path)"); } } /*写COOKIE*/ public void addCOOKIE(COOKIE COOKIE) { if (COOKIE.getDomain() == null || COOKIE.getPath() == null || COOKIE.getName() == null || mDatabase == null) { return; } String mCOOKIELock = "asd"; synchronized (mCOOKIELock) { ContentValues COOKIEVal = new ContentValues(); COOKIEVal.put(COOKIES_DOMAIN_COL, COOKIE.getDomain()); COOKIEVal.put(COOKIES_PATH_COL, COOKIE.getPath()); COOKIEVal.put(COOKIES_NAME_COL, COOKIE.getName()); COOKIEVal.put(COOKIES_VALUE_COL, COOKIE.getValue()); mDatabase.insert("COOKIEs", null, COOKIEVal); } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。