Android如何使用讀寫cookie的方法

可以使用SharedPreferences或者SQLite來儲存使用者資訊

private static HashMap<String,String>  CookieContiner=new HashMap<String,String>() ;
    /**
 * 儲存Cookie
 * @param resp
 */
    public void SaveCookies(HttpResponse httpResponse)
    {
    Header[] headers = httpResponse.getHeaders("Set-Cookie");
    String headerstr=headers.toString();
        if (headers == null)
            return;

        for(int i=0;i<headers.length;i++)
        {
        String cookie=headers[i].getValue();
        String[]cookievalues=cookie.split(";");
        for(int j=0;j<cookievalues.length;j++)
        {
        String[] keyPair=cookievalues[j].split("=");
        String key=keyPair[0].trim();
        String value=keyPair.length>1?keyPair[1].trim():"";
        CookieContiner.put(key, value);
        }
        }
    }
    /**
     * 增加Cookie
     * @param request
     */
    public void AddCookies(HttpPost request)
    {
        StringBuilder sb = new StringBuilder();
        Iterator iter = CookieContiner.entrySet().iterator();
        while (iter.hasNext()) {
          Map.Entry entry = (Map.Entry) iter.next();
          String key = entry.getKey().toString();
          String val = entry.getValue().toString();
          sb.append(key);
          sb.append("=");
          sb.append(val);
          sb.append(";");
        }
        request.addHeader("cookie", sb.toString());
    } 

做了一個android網路應用，要求用自己實現的webview去訪問web網站，並且在遠程登入成功之後把cookie寫入到手機，保留用作以後的自動登入。找了好多資料。發覺讀取cookies倒還用的很普遍，可是通過程式寫cookie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 < 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，發現android預設的browser增加cookie是在資料庫中增加記錄，和window不同，win是採用一個txt文字檔的形式來儲存cookie。而android是將cookie儲存在資料庫中。具體的介紹在《android cookie儲存位置》一文中有介紹。我們都知道，android每個應用程式的儲存空間都是獨立的。不管使用preference還是database儲存，都會在每個/data/data/package name/下面進行儲存（preference儲存在/data/data/package name/shared_prefs/xxxx.xml）。前面也說到cookie是存在資料庫中，那麼如果採用非瀏覽器訪問網路需要保留cookie的話我們就應該在database中建立cookies表，並且存入相應的cookies資料。仿照預設broswer的代碼：
/**聲明一些資料庫操作的常量*/
  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);
//建立cookie資料庫
    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);
      
    }
}