我已经看到了许多使用HttpURLConnection +
InputStream并在使用后关闭（或不关闭它们）的示例。这就是我想出的方法，以确保完成后所有内容都关闭，无论是否存在错误。这有效吗？

HttpURLConnection conn = null;
InputStream is = null;
try {
    URL url = new URL("http://example.com");

    // (set connection and read timeouts on the connection)
    conn = (HttpURLConnection)url.openConnection();

    is = new BufferedInputStream(conn.getInputStream());

    doSomethingWithInputStream(is);

} catch (Exception ex) {
} finally {
    if (is != null) {
        try {
            is.close();
        } catch (IOException e) {
        }
    }
    if (conn != null) {
        conn.disconnect();
    }
}

谢谢