說下背景，我們實現的http的檔案下載是基於webdav協議的。

這個肯定是需要鑑權的～

android 5.1不再推薦使用apache的client,今天努力想嘗試一下用httpurlconnection替換一下。

大家可以到stackoverflow搜尋一下，目前httpurlconnection還不支援digest鑑權，只支援base的鑑權。

下面是httpurlconnection base的鑑權程式碼：

HttpURLConnection conn=(HttpURLConnection)newurl.openConnection();
setJellyBeanAuth(conn);
 

private void setJellyBeanAuth(HttpURLConnection httpConn) {
    byte[] auth = (LoginManager
            .getCurrentUsername() + ":" + LoginManager
            .getCurrentPassword()).getBytes();
    String basic = Base64.encodeToString(auth, Base64.NO_WRAP);
    httpConn.setRequestProperty("Authorization"
 
, "Basic " + basic);
}

然後偶們需要的是digest鑑權，所以還的老老實實使用httpclient

digest的鑑權程式碼如下：

HttpContext context = new BasicHttpContext();

context.setAttribute(ClientContext.CREDS_PROVIDER,
        new BasicCredentialsProvider());

CredentialsProvider provider = (CredentialsProvider) context
        .getAttribute(ClientContext.CREDS_PROVIDER
 
);

provider.setCredentials(
        new AuthScope(targetHost.getHostName(), targetHost
                .getPort()),
        new UsernamePasswordCredentials(LoginManager
                .getCurrentUsername(), LoginManager
                .getCurrentPassword()));

關於httpurlconnection不支援digest的可以看這篇文章：

http://stackoverflow.com/questions/32689185/digest-authentication-in-android-using-httpurlconnection

如果有大牛看到這篇blog,有好的開源http框架，歡迎推薦啊～