Android - WebView 设置url的Cookie 免登陆

说明：

服务器网页要通过网页的Cookie得到客户端的登陆状态，必须客户端给网页Cookie设置值，这样服务端才能得到Cookie的值。

步骤：

1、WebView里面必须设置属性：

// 设置可以访问文件
myWebView.getSettings().setAllowFileAccess(true);
//如果访问的页面中有Javascript，则webview必须设置支持Javascript
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.getSettings().setUserAgentString(MyApplication.getUserAgent());
myWebView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
myWebView.getSettings().setAllowFileAccess(true);
myWebView.getSettings().setAppCacheEnabled(true);
myWebView.getSettings().setDomStorageEnabled(true);
myWebView.getSettings().setDatabaseEnabled(true);

2、设置Cookie

/**
* Sync Cookie
*/
private void syncCookie(Context context, String url){
try{
Log.d("Nat: webView.syncCookie.url", url);

CookieSyncManager.createInstance(context);

CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setAcceptCookie(true);
//cookieManager.removeSessionCookie();// 移除
//cookieManager.removeAllCookie();//清除所有cookie

//log
String oldCookie = cookieManager.getCookie(url);
if(oldCookie != null){
Log.d("Nat: webView.syncCookieOutter.oldCookie", oldCookie);
}

//参数 - 通过Builder形式
StringBuilder sbCookie = new StringBuilder();
sbCookie.append(String.format("JSESSIONID=%s","INPUT YOUR JSESSIONID STRING"));
sbCookie.append(String.format(";domain=%s", "INPUT YOUR DOMAIN STRING"));
sbCookie.append(String.format(";path=%s","INPUT YOUR PATH STRING"));
String cookieValue = sbCookie.toString();
cookieManager.setCookie(url, cookieValue);

//参数 - 单独形式
cookieManager.setCookie(url, "JSESSIONID=" + sid);
cookieManager.setCookie(url, "access_token=" + stoken);

//最后一定要调用
CookieSyncManager.getInstance().sync();

//log
String newCookie = cookieManager.getCookie(url);
if(newCookie != null){
Log.d("Nat: webView.syncCookie.newCookie", newCookie);
}
}catch(Exception e){
Log.e("Nat: webView.syncCookie failed", e.toString());
}
}