Question

my web.xml config is

<filter>
        <filter-name>springSecurityFilterChain</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>springSecurityFilterChain</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

here is my security config

    <intercept-url pattern="/*" access="ROLE_USER" />
    <intercept-url pattern="/*.ico"  filters="none" />


</http>

 <beans:bean id="customAuthenticationProvider" class="net.spring3.provider.MyAuthProvider"  />

    <authentication-manager>

        <authentication-provider ref="customAuthenticationProvider" /> 

    </authentication-manager>

Here is my customAuthProvider class

public class MyAuthProvider implements AuthenticationProvider  {


    @Override
    public boolean supports(Class<? extends Object> arg0) {
        // TODO Auto-generated method stub
        return false;
    }


     @SuppressWarnings("serial")
        private static Map<String, String> SIMPLE_USERS = new HashMap<String, String>(2) {{
            put("joe", "joe");
            put("bob", "bob");
        }};

        @SuppressWarnings("serial" )
        private static List<GrantedAuthority> AUTHORITIES = new ArrayList<GrantedAuthority>(1) {{
            add(new GrantedAuthorityImpl("ROLE_USER"));
        }};

        @Override
        public Authentication authenticate(Authentication auth) throws AuthenticationException
        {
            // All your user authentication needs
            System.out.println("==Authenticate Me==");
            if (SIMPLE_USERS.containsKey(auth.getPrincipal()) 
                && SIMPLE_USERS.get(auth.getPrincipal()).equals(auth.getCredentials()))
            {
                return new UsernamePasswordAuthenticationToken(auth.getName(), auth.getCredentials(), AUTHORITIES);
            }
            throw new BadCredentialsException("Username/Password does not match for " + auth.getPrincipal());
        }




}

The page shows the login form and when I enter bob and bob as login , it throws up the following error.

Your login attempt was not successful, try again.

Reason: No AuthenticationProvider found for org.springframework.security.authentication.UsernamePasswordAuthenticationToken

I checked the logs at debug level ALL and here is what I get.

FINE: Request is to process authentication
Nov 17, 2011 5:37:36 AM org.springframework.context.support.AbstractApplicationContext publishEvent
FINEST: Publishing event in Root WebApplicationContext: org.springframework.security.authentication.event.AuthenticationFailureProviderNotFoundEvent[source=org.springframework.security.authentication.UsernamePasswordAuthenticationToken@ffff8dfd: Principal: sd; Credentials: [PROTECTED]; Authenticated: false; Details: org.springframework.security.web.authentication.WebAuthenticationDetails@fffe3f86: RemoteIpAddress: 127.0.0.1; SessionId: x4lg4vtktpw9; Not granted any authorities]
Nov 17, 2011 5:37:36 AM org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter unsuccessfulAuthentication
FINE: Authentication request failed: org.springframework.security.authentication.ProviderNotFoundException: No AuthenticationProvider found for org.springframework.security.authentication.UsernamePasswordAuthenticationToken

Any help on this..what am I doing wrong here ?

Answer 1

As you already wrote in your comment the problem is that you always return false in the supports() method of your autentication provider. But instead of always returning true you should check the authentication you get like this:

public class MyAuthenticationProvider implements AuthenticationProvider, Serializable {

    @Override
    public boolean supports(Class<? extends Object> authentication) {
        return (UsernamePasswordAuthenticationToken.class.isAssignableFrom(authentication));
    }

    // ...
}