Step 1: Generate a Request Token

Start by making an API call to the new token method. This will return
a new request token that will be valid for 60 minutes. The request
token is not authorized by the user at this stage. Request tokens are
API account specific and are the tie between your application and the
user in step 2.

对于第1步,我有以下代码：

URL url = new URL("http://api.themoviedb.org/3/authentication/token/new?api_key=the_key");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
StringWriter writer = new StringWriter();
String line;
while ((line = reader.readLine()) != null) {
    writer.write(line);
}
reader.close();
Map<String,List<String>> headerFields = connection.getHeaderFields();
String callBackUrl = null;
for(Map.Entry<String,List<String>> entry : headerFields.entrySet()) {
    if(entry.getKey() != null && entry.getKey().equals("Authentication-Callback")) {
        callBackUrl = entry.getValue().get(0);
    }
}

它在控制台中打印回调URL以及请求令牌(如果我将writer.toString()转换为Json对象).

但第二部分是用户名和密码的用户身份验证.回调URL将用户重定向到TMDb的登录页面.我已经通过将回调网址从控制台复制粘贴到浏览器来测试它.

第2步说明：

Step 2: Request Authorization From the User

Once you have a valid request token,your application needs to open a
web browser and send them to TMDb. The HTTP response when generating a
new token will include a Authentication-Callback header that you can
easily use for the redirect.

If the user is not logged in to TMDb,they will be redirected to the
login page before being asked to grant your application permission to
use their account. Once the user has granted your application
permission to use their account,the browser-based part of this
process is over and you can return them to your application.

Just like the request for a new token,the approved response will
include a Authentication-Callback header which again,is a convenient
way to redirect your application back to the API and generate the real
session id.

现在我的问题是：如果我有用户名和密码,我可以通过HttpURLConnection或任何其他方式验证该用户吗？

我试过这个：

url = new URL(callBackUrl);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");        
BASE64Encoder encoder = new BASE64Encoder();
String usernamepassword = "myusername" + ":" + "mypassword";
String encodedAuthorization = encoder.encode(usernamepassword.getBytes());
connection.setRequestProperty("Authorization","Basic "+ encodedAuthorization);
headerFields = connection.getHeaderFields();

for(Map.Entry<String,List<String>> entry : headerFields.entrySet()) {
    System.out.println(entry.getKey() + " : " +entry.getValue());
}

但在控制台我得到：

null : [HTTP/1.1 404 Not Found]
Status : [404 Not Found]
X-Frame-Options : [sameorigin]
Date : [Tue,28 Feb 2012 08:30:17 GMT]
Vary : [Accept-Encoding]
X-Cascade : [pass]
Content-Length : [7835]
X-XSS-Protection : [1; mode=block]
Set-Cookie : [tmdb.session=BAh7CUkiD3Nlc3Npb25faWQGOgZFRiJFNGRkMjc5ODYwMjJmYWYwZDlmOGE5%0AOTVjY2E0NWFjMzhhYTRiOGFjOGJiYjQ5ZGFhNzExNDdkMGM4MWNhZGUyMEki%0ADWxhbmd1YWdlBjsARkkiB2VuBjsARkkiC2xvY2FsZQY7AEZJIgd1cwY7AEZJ%0AIg5sb2dnZWRfaW4GOwBGRg%3D%3D%0A; path=/; expires=Thu,29-Mar-2012 08:30:17 GMT; HttpOnly]
Content-Type : [text/html;charset=utf-8]
Connection : [keep-alive]
Server : [Nginx]

如你看到的：

Status : [404 Not Found]

所以最后的程序并不富有成效.

我是以错误的方式实施身份验证吗？

我非常感谢你的建议.

提前致谢.