我为Oauth2身份验证流程编写了一个基于Java的签名例程（令牌撤销）。请参阅下面[here]手册中cURL协议说明的代码实现。程序代码编译并在没有错误消息的情况下工作，但在注销后，用户帐户仍然在WSO2仪表板查询下保持连接状态。
请参阅下面触发注销功能的Servlet类：
class SignoffServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException,IOException {
try{
String accessToken = (String) req.getSession().getAttribute("access_token");
System.out.println("Start Logoff processing for revoke of the token: " + accessToken);
URL url = new URL (Oauth2Server + "/oauth2/revoke?token="+accessToken);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
// new encode with Apache codec (for Java8 use native lib)
String userCredentials = clientId + ":" + clientSecret;
String basicAuth = "Basic " + new String(new Base64().encode(userCredentials.getBytes()));
connection.setRequestProperty ("Authorization", basicAuth);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
connection.addRequestProperty("token", accessToken);
connection.addRequestProperty("token_type_hint", "access_token");
//connection.setRequestProperty("token", accessToken);
// connection.setRequestProperty("token_type_hint", "access_token");
connection.setRequestMethod("POST");
connection.setDoOutput(true);
InputStream content = (InputStream)connection.getInputStream();
BufferedReader in =
new BufferedReader (new InputStreamReader (content));
String line;
while ((line = in.readLine()) != null) {
System.out.println(line);
System.out.println("Logoff finished sucessfully");
}
} catch(Exception e) {
System.out.println("Logoff failed, error cause: " + e.toString());
e.printStackTrace();
}
System.out.println("Logoff finished sucessfully");
// return the json of the user's basic info
String html_header = "<html><body>";
String myjson = "<br>Logoff completed sucessfully";
myjson += "<br><br><b><a href='./index.html'>Back to login page</a></b><br>";
String html_footer = "</body></html>";
String mypage = html_header + myjson + html_footer;
resp.setContentType("text/html");
resp.getWriter().println(myjson);
}
}
欢迎使用有关在Java代码中更改内容以激活Oauth 2.0的签名功能的建议。
感谢您详细解释Oauth2中授权和身份验证之间的区别。请参阅下面的代码，该代码可以撤消有效的Oauth2令牌：
class SignoffServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException,IOException {
String outputl = "";
try{
String accessToken = (String) req.getSession().getAttribute("access_token");
// testing .. inhibu acivate this line: // revoke accessToken = "abc";
System.out.println("Start Logoff processing for revoke of the token: " + accessToken);
// URL url = new URL (Oauth2Server + "/oauth2/revoke?token="+accessToken);
// URL url = new URL (Oauth2Server + "/oauth2endpoints/revoke");
URL url = new URL (Oauth2Server + "/oauth2/revoke");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
// new encode with Apache codec (for Java8 use native lib)
String userCredentials = clientId + ":" + clientSecret;
String basicAuth = "Basic " + new String(new Base64().encode(userCredentials.getBytes()));
basicAuth = basicAuth.replace("\\r", "");
basicAuth = basicAuth.replace("\\n", "");
connection.setRequestProperty ("Authorization", basicAuth);
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
// send data
// String str = "{\"token\": \"" + accessToken + "\",\"token_type_hint\":\"access_token\"}";
// example of JSON string "{\"x\": \"val1\",\"y\":\"val2\"}";
//byte[] outputInBytes = str.getBytes("UTF-8");
//OutputStream os = connection.getOutputStream();
//os.write( outputInBytes );
// os.close();
//send request
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes("token=" + accessToken);
wr.flush();
wr.close();
// end of new method
InputStream content = (InputStream)connection.getInputStream();
BufferedReader in =
new BufferedReader (new InputStreamReader (content));
String line;
while ((line = in.readLine()) != null) {
// System.out.println(line); // for debug only
outputl += line;
}
} catch(Exception e) {
System.out.println("Logoff failed, error cause: " + e.toString());
e.printStackTrace();
}
System.out.println("Logoff finished successfully");
// return the json of the user's basic info
// customized Apache HTTP GET with header - Claude, 27 August 2015 reading user information
// ===============================================================================================
String tokeninfo = "";
String infourl = Oauth2Server + "/oauth2/userinfo?schema=openid";
StringBuilder infobody = new StringBuilder();
DefaultHttpClient infohttpclient = new DefaultHttpClient(); // create new httpClient
HttpGet infohttpGet = new HttpGet(infourl); // create new httpGet object
// get some info about the user with the access token
String currentToken = (String) req.getSession().getAttribute("access_token");
String bearer = "Bearer " + currentToken.toString();
infohttpGet.setHeader("Authorization", bearer);
try {
HttpResponse response = infohttpclient.execute(infohttpGet); // execute httpGet
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == HttpStatus.SC_OK) {
System.out.println(statusLine);
infobody.append(statusLine + "\n");
HttpEntity e = response.getEntity();
String entity = EntityUtils.toString(e);
infobody.append(entity);
} else {
infobody.append(statusLine + "\n");
// System.out.println(statusLine);
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
tokeninfo = infobody.toString();
infohttpGet.releaseConnection(); // stop connection
}
// User info lookup is done fetching current log status of the token
if (tokeninfo.startsWith("HTTP/1.1 400 Bad Request")) {
tokeninfo = "Token " + currentToken + " was revoked";
};
String html_header = "<html><body>";
String myjson = "<br>Logoff completed successfully";
myjson += "<br>Current Userinfo and Token Status";
myjson += "<br>" + tokeninfo + "<br>";
myjson += "<br><br><b><a href='./index.html'>Back to login page</a></b><br>";
String html_footer = "</body></html>";
String mypage = html_header + myjson + html_footer;
resp.setContentType("text/html");
resp.getWriter().println(myjson);
// to print signoff screen for debug purpose
// resp.getWriter().println(outputl);
}
}
答案 0 :(得分：2)
上面提到了撤销访问令牌的方法。从OAuth2授权服务器撤销和签署访问令牌是两个不同的过程。举个例子;在Facebook中，您可以撤消为不同应用程序提供的访问令牌。但这并不意味着您已从FB或您已登录的任何其他应用程序注销。
OAuth2不是身份验证机制。它是授权框架。它不包含从授权服务器注销的标准方法。但是，您可以使用一些自定义方式从WSO2IS中签出（终止WSO2IS中的SSO会话），这可以使用。但是，必须通过调用以下url使用最终用户的浏览器（不使用反向通道）来完成。请查看this的最后一部分了解更多详情
namespace detail {
template <typename T>
struct is_foo : std::false_type{};
template <typename T, typename A>
struct is_foo<Foo<T,A>> : std::true_type{};
}
template <typename T>
using is_foo = detail::is_foo<typename std::decay<T>::type>;
template <typename T, typename A>
int bar(const Foo<T,A> &x) { return 0; }
template <typename T,
typename = typename std::enable_if<!is_foo<T>::value>::type>
auto bar(const T &x)
-> decltype(bar(Foo<T>{})){
Foo<T> b{};
return bar(b);
}