java - BufferedReader返回null

我正在尝试从文本中读取网址，然后让应用打开该地址，我的缓冲读取器似乎正在正确读取行，但readline不断返回null

String rsslink = null;
    InputStream is = getResources().openRawResource(R.raw.xmlsource);
    BufferedReader br = new BufferedReader(new InputStreamReader(is));

    try {
        while ((rsslink = br.readLine()) != null)
        {

        }
    }
    catch (IOException e)
    {
        e.printStackTrace();
    }
    String RSS_LINK = rsslink;

    Log.d(Constants.TAG, "Service started");
    List<RssItem> rssItems = null;
    try
    {
        XMLRssParser parser = new XMLRssParser();
        rssItems = parser.parse(getInputStream(RSS_LINK));

最佳答案

您将获得最后一行null rsslink。
你需要改变你的循环

try {
        while ((rsslink = br.readLine()) != null)
        {

        }
    }

至

 try {
        StringBuilder sb=  new StringBuilder();
        while ((rsslink = br.readLine()) != null)
        {
               sb.append(rsslink);
        }
        rsslink = sb.toString();
    }