android WebView登录状态session id 和cookie同步

android客户端通过httpClient或者httpUrlConnection进行登录后，为了把登录状态同步到webView中，这时需要进行cookie的同步



一.cookie同步方式

下面是登录线程:

public class LoginThread extends Thread{
        
    private Handler loginHandler;
    
    public  LoginThread(Handler loginHandler) {
        this.loginHandler = loginHandler;
    }
    @Override
    public void run()
    {
        List<String> cookieLst = new ArrayList<String>();
        HttpParams httpParams = new BasicHttpParams();
        ConnManagerParams.setMaxTotalConnections(httpParams, 5);
        ConnManagerParams.setTimeout(httpParams, 15*1000);
        HttpConnectionParams.setSoTimeout(httpParams, 10*1000);
        HttpConnectionParams.setTcpNoDelay(httpParams, true);
        HttpPost httpPost = new HttpPost("http://192.168.1.107/cookie/login.php");
        List<NameValuePair> nvPairs = new ArrayList<NameValuePair>();
        nvPairs.add(new BasicNameValuePair("name", "lisi"));
        nvPairs.add(new BasicNameValuePair("age","22"));
        nvPairs.add(new BasicNameValuePair("gender", "男"));
        
        try {
            UrlEncodedFormEntity entity = new UrlEncodedFormEntity(nvPairs, HTTP.UTF_8);
            httpPost.setEntity(entity);
            HttpClient httpClient =  new DefaultHttpClient();
            HttpResponse httpResponse = httpClient.execute(httpPost);
            if(httpResponse!=null && httpResponse.getStatusLine().getStatusCode()==HttpStatus.SC_OK)
            {
               String content = EntityUtils.toString(httpResponse.getEntity());
               Log.d("LOGIN", content);
               Header[] allHeaders = httpResponse.getAllHeaders();
               if(allHeaders!=null)
               {
                   //获取cookie的第一种方式
                   for (Header header : allHeaders)
                   {
                       Log.d("LOGIN", header.getName()+"="+header.getValue());
                       if("Set-Cookie".equalsIgnoreCase(header.getName()))
                       {
                           cookieLst.add(header.getValue());
                       }
                    }
               }
               //获取cookie的第二种方式
               AbstractHttpClient abstractHttpClient = (AbstractHttpClient) httpClient;
               CookieStore cookieStore = abstractHttpClient.getCookieStore();
               List<Cookie> cookies = cookieStore.getCookies();
               for (Cookie cookie : cookies)
               {
                   Log.d("LOGIN-COOKIE", cookie.getName()+"="+cookie.getValue()+",path="+cookie.getPath()+",domain="+cookie.getDomain()+",expires="+cookie.getExpiryDate());
                }
               
               if(loginHandler!=null)
               {
                   Message msg = new Message();
                   msg.obj = cookieLst;
                   msg.what = 200;
                   msg.setTarget(loginHandler);
                   msg.sendToTarget();
               }
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
下面是WebView主页面Activity

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public class Main extends Activity implements DownloadListener {
    
    private WebView mWebView;
    
    //extraHeaders经测试不可以同步cookie
    private Map<String, String> extraHeaders;
    
    private final String TAG = "WEB_VIEW";
    
    private final Handler loginHandler = new Handler(){
        
        @Override
        public void handleMessage(Message msg) {
            
            if(msg.what==200)
            {
                List<String> cookies =  (List<String>) msg.obj;
                if(cookies!=null)
                {  
                    syncCookieToWebView(cookies);
                    mWebView.loadUrl("http://192.168.1.107/cookie/read.php");
                }
            }else{
                super.handleMessage(msg);
            }
        }
        
    };
    
    @SuppressLint("SetJavaScriptEnabled")
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mWebView = (WebView) findViewById(R.id.main_webview);
        WebSettings settings = mWebView.getSettings();
        settings.setAppCacheEnabled(true);
        settings.setCacheMode(WebSettings.LOAD_DEFAULT);
        settings.setGeolocationEnabled(true);
        settings.setUseWideViewPort(true);
        settings.setSaveFormData(true);
        settings.setSavePassword(true);
        settings.setSupportZoom(false);
        settings.setLoadsImagesAutomatically(true);
        settings.setBlockNetworkImage(false);
        if(android.os.Build.VERSION.SDK_INT>=11)
        {
            settings.setEnableSmoothTransition(true);
        }
        settings.setJavaScriptCanOpenWindowsAutomatically(false);
        settings.setAllowFileAccess(false);
        settings.setJavaScriptEnabled(true);
        String userAgent = settings.getUserAgentString();
        Log.d(TAG, userAgent);
        if(android.os.Build.VERSION.SDK_INT>=14)
        {
            mWebView.setFitsSystemWindows(true);
        }
        if(mWebView.isHardwareAccelerated())
        {
            mWebView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
        }
        mWebView.setKeepScreenOn(true);
        extraHeaders = new IdentityHashMap<String, String>();
        
        mWebView.setWebViewClient(new WebViewClient(){
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                if(view!=null && !TextUtils.isEmpty(url))
                {
                    extraHeaders.put("control-cache", "no-cache,private");
                    extraHeaders.put("pragma", "no-cache,no-store");
                    extraHeaders.put("expires", "0");
                    view.loadUrl(url, extraHeaders);
                    return true;
                }
                return super.shouldOverrideUrlLoading(view, url);
            }
        });
        
        mWebView.setDownloadListener(this);
        
        //mWebView.loadUrl("http://shouji.baidu.com/software/?from=web_alad_multi");
        new LoginThread(loginHandler).start();
    }
    //销毁webView
    @Override
    protected void onDestroy() {
        super.onDestroy();
        mWebView.clearFormData();
        mWebView.clearHistory();
        mWebView.destroy();
    }
    
    //监听文件下载，WebView不会自动下载，需要我们自己构建下载代码
    @Override
    public void onDownloadStart(String url, String userAgent,String contentDisposition, String mimetype, long contentLength)
    {
        Log.d(TAG, "url="+url);
        Log.d(TAG, "userAgent="+url);
        Log.d(TAG, "contentDisposition="+contentDisposition);
        Log.d(TAG, "mimetype="+mimetype);
        Log.d(TAG, "contentLength="+contentLength);
        
        //第一种下载方式是 自定义的http工具类
        //new DownloadThread(url,contentDisposition,mimetype,contentLength).start();
        
        
        //第二种下载方式是调用系统的webView,具有默认的进度条
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(Uri.parse(url));
        startActivity(intent);
        
    }
    /**
     * cookie同步
     */
    private void syncCookieToWebView(List<String> cookies)
    {
        CookieSyncManager.createInstance(Main.this);
        CookieManager cm = CookieManager.getInstance();
        cm.setAcceptCookie(true);
        if(cookies!=null)
        {
            for (String cookie : cookies)
            {
            cm.setCookie("http://192.168.1.107:80",cookie);//注意端口号和域名，这种方式可以同步所有cookie，包括sessionid
             }
        }
        CookieSyncManager.getInstance().sync();
    }
}


二.注意:平时开发中Cookie同步是最佳选项，但这并不意味着一定需要使用cookie同步，我们可以使用  token+用户id+登录时间校验码  进行同步登录



三.对于使用javaInterface进行同步登录的问题

javaInterface风险性很高，如果android平台是 4.2+比较安全，但4.2以下版本，安全性不容乐观，比如通过反射造成硬盘被读写的可能性很高！

在android 4.2中增加了 @javainterface注解，并且将公开的方法异步化，这样有效的控制了某些没必要公开的方法被无意间作为接口公开，导致js发射到硬盘的读写io类，从而发生文件被窃取，垃圾文件堆积，有害文件被下载等问题！



四.目前来说让所有人使用 4.2+以上版本可能性不大，但尽量少使用javainterface,转而使用  协议的方式，所谓协议，就是通信协议，我们可以分析url参数，从而进行webView和native代码的通信

mWebView.setWebViewClient(new WebViewClient(){
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                
            //捕获url的参数值
            
            if(url.indexOf("login")>=0)
            {
                //客户端代码执行某部分操作----->执行完毕后通过url参数把执行结果返回webView
                
            }else if(url.indexOf("userCenter")>=0){
                //客户端代码执行某部分操作----->执行完毕后通过url参数把执行结果返回webView
            }
            return super.shouldOverrideUrlLoading(view, url);
            }
        });
当然，javainterface不推荐，但完全可以使用

?
1
view.loadUrl("javascript:dosometing("+"'参数'"+")");

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