为什么Apache HttpComponents的HttpGet请求挂起？

Question

我有这个代码，它运行正常：

System.out.println("Fetching...");
CloseableHttpClient client = HttpClients.createDefault();
HttpGet request = new HttpGet("http://blogs.reuters.com/talesfromthetrail/2012/06/26/obama-letter-brings-democratic-donors-out-of-the-woodwork/");
CloseableHttpResponse response = client.execute(request);
HttpEntity entity = response.getEntity();
if (entity != null) {
    System.out.println("Fetched!");
    return EntityUtils.toString(entity);
}

但是建议不要使用EntityUtils将实体转换为String。所以我尝试使用StringBuffer，例如示例代码：

System.out.println("Fetching...");
CloseableHttpClient client = HttpClients.createDefault();
HttpGet request = new HttpGet("http://blogs.reuters.com/talesfromthetrail/2012/06/26/obama-letter-brings-democratic-donors-out-of-the-woodwork/");
CloseableHttpResponse response = client.execute(request);
HttpEntity entity = response.getEntity();
if (entity != null) {
    System.out.println("Fetched!");
    BufferedReader rd = new BufferedReader(new InputStreamReader(entity.getContent()));
    StringBuffer result = new StringBuffer();
    String line = rd.readLine();
    while (line != null) {
        result.append(line);
        line = rd.readLine();
    }
    return result.toString();
}

它挂了！ "Fetched!"打印语句甚至无法执行。我是一个Java菜鸟，所以我不知道为什么会这样。我该怎么调试呢？