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android讀寫cookie的方法示例

更新時(shí)間：2018年05月18日 14:04:55 作者：junjieking

這篇文章主要介紹了android讀寫cookie的方法示例，小編覺得挺不錯(cuò)的，現(xiàn)在分享給大家，也給大家做個(gè)參考。一起跟隨小編過來看看吧

做了一個(gè)android網(wǎng)絡(luò)應(yīng)用，要求用自己實(shí)現(xiàn)的webview去訪問web網(wǎng)站，并且在遠(yuǎn)程登錄成功之后把cookie寫入到手機(jī)，保留用作以后的自動(dòng)登錄。找了好多資料。發(fā)覺讀取cookies倒還用的很普遍，可是通過程序?qū)慶ookie卻沒有太多資料。

先來看一下如何讀取cookie吧：

try
    {
     DefaultHttpClient httpclient = new DefaultHttpClient();
     HttpGet httpget = new HttpGet("http://www.hlovey.com");
     HttpResponse response = httpclient.execute(httpget);
     HttpEntity entity = response.getEntity();
     List<Cookie> cookies = httpclient.getCookieStore().getCookies();
     if (entity != null) {
       entity.consumeContent();
     }
    
     if (cookies.isEmpty()) {
      Log.i(TAG, "NONE");
     } else {
       for (int i = 0; i &lt; cookies.size(); i++) {       
        Log.i(TAG,"- domain " + cookies.get(i).getDomain());
        Log.i(TAG,"- path " + cookies.get(i).getPath());
        Log.i(TAG,"- value " + cookies.get(i).getValue());
        Log.i(TAG,"- name " + cookies.get(i).getName());
        Log.i(TAG,"- port " + cookies.get(i).getPorts());
        Log.i(TAG,"- comment " + cookies.get(i).getComment());
        Log.i(TAG,"- commenturl" + cookies.get(i).getCommentURL());
        Log.i(TAG,"- all " + cookies.get(i).toString());
       }
     }
     httpclient.getConnectionManager().shutdown();
    
    }catch(Exception e){
     //Todo
    }finally{
    //Todo     
    }

通過分析com.android.browser的源碼，發(fā)現(xiàn)android默認(rèn)的browser增加cookie是在數(shù)據(jù)庫中增加記錄，和window不同，win是采用一個(gè)txt文本文件的形式來存儲(chǔ)cookie。而android是將cookie存儲(chǔ)在數(shù)據(jù)庫中。具體的介紹在《android cookie存儲(chǔ)位置》一文中有介紹。我們都知道，android每個(gè)應(yīng)用程序的存儲(chǔ)空間都是獨(dú)立的。不管使用preference還是database存儲(chǔ)，都會(huì)在每個(gè)/data/data/package name/下面進(jìn)行存儲(chǔ)（preference存儲(chǔ)在/data/data/package name/shared_prefs/xxxx.xml）。前面也說到cookie是存在數(shù)據(jù)庫中，那么如果采用非瀏覽器訪問網(wǎng)絡(luò)需要保留cookie的話我們就應(yīng)該在database中建立cookies表，并且存入相應(yīng)的cookies數(shù)據(jù)。仿照默認(rèn)broswer的代碼：

/**聲明一些數(shù)據(jù)庫操作的常量*/
 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);
//創(chuàng)建cookie數(shù)據(jù)庫
  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)");
  }
 }
 
/*寫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?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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