How to access authentication alias from EJB deploy

问题:

I need to provide password for keystore in my EJB but I don't want it to be visible to developers. My idea was to create Authentication Alias in Websphere Console and later lookup for MY_ALIAS and obtain password from alias. I found some discussion related to subject at: http://www.coderanch.com/t/79439/Websphere/Authentication-Data

Do anybody knows can alias be lookuped? What is your suggested method to achieve my goal?

Thank you very much!

回答1:

You can use the following code to obtain credentials from J2C authentication data entry:

import com.ibm.wsspi.security.auth.callback.Constants;
import com.ibm.wsspi.security.auth.callback.WSMappingCallbackHandlerFactory;
import javax.resource.spi.security.PasswordCredential;
import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.login.LoginContext;

Map map = new HashMap();
map.put(Constants.MAPPING_ALIAS, "YOUR_J2C_DATA_ALIAS");
CallbackHandler callbackHandler = WSMappingCallbackHandlerFactory.getInstance().getCallbackHandler(map, null);

LoginContext loginContext = new LoginContext("DefaultPrincipalMapping", callbackHandler);
loginContext.login();

Subject subject = loginContext.getSubject();
Set credentials = subject.getPrivateCredentials();

PasswordCredential passwordCredential = (PasswordCredential) credentials.iterator().next();

String user = passwordCredential.getUserName();
String password = new String(passwordCredential.getPassword());