How to use

org.apache.tomcat.util.descriptor.web.LoginConfig

constructor

LoginConfig loginConfig = new LoginConfig();
loginConfig.setAuthMethod("DIGEST");
loginConfig.setRealmName(InMemoryRealm.NAME);

@Override
public void lifecycleEvent(LifecycleEvent event) {
  try {
    Context context = (Context) event.getLifecycle();
    if (event.getType().equals(Lifecycle.CONFIGURE_START_EVENT)) {
      context.setConfigured(true);
    }
    // LoginConfig is required to process @ServletSecurity
    // annotations
    if (context.getLoginConfig() == null) {
      context.setLoginConfig(
          new LoginConfig("NONE", null, null, null));
      context.getPipeline().addValve(new NonLoginAuthenticator());
    }
  } catch (ClassCastException e) {
    return;
  }
}

  @Override
  public void lifecycleEvent(LifecycleEvent event) {
    try {
      Context context = (Context) event.getLifecycle();
      if (event.getType().equals(Lifecycle.CONFIGURE_START_EVENT)) {
        context.setConfigured(true);
        // Process annotations
        WebAnnotationSet.loadApplicationAnnotations(context);
        // LoginConfig is required to process @ServletSecurity
        // annotations
        if (context.getLoginConfig() == null) {
          context.setLoginConfig(new LoginConfig("NONE", null, null, null));
          context.getPipeline().addValve(new NonLoginAuthenticator());
        }
      }
    } catch (ClassCastException e) {
    }
  }
}

  @Override
  public void lifecycleEvent(LifecycleEvent event) {
    try {
      Context context = (Context) event.getLifecycle();
      if (event.getType().equals(Lifecycle.CONFIGURE_START_EVENT)) {
        context.setConfigured(true);
        // Process annotations
        WebAnnotationSet.loadApplicationAnnotations(context);
        // LoginConfig is required to process @ServletSecurity
        // annotations
        if (context.getLoginConfig() == null) {
          context.setLoginConfig(new LoginConfig("NONE", null, null, null));
          context.getPipeline().addValve(new NonLoginAuthenticator());
        }
      }
    } catch (ClassCastException e) {
    }
  }
}

static void enableBasicAuth(Context ctx, boolean enableSSL) {
 LoginConfig loginConfig = new LoginConfig();
 loginConfig.setAuthMethod("BASIC");
 ctx.setLoginConfig(loginConfig);
 ctx.addSecurityRole(AUTH_ROLE);
 SecurityConstraint securityConstraint = new SecurityConstraint();
 securityConstraint.addAuthRole(AUTH_ROLE);
 if (enableSSL) {
  securityConstraint.setUserConstraint(TransportGuarantee.CONFIDENTIAL.toString());
 }
 SecurityCollection securityCollection = new SecurityCollection();
 securityCollection.addPattern("/*");
 securityConstraint.addCollection(securityCollection);
 ctx.addConstraint(securityConstraint);
}

static void enableBasicAuth(Context ctx, boolean enableSSL) {
 LoginConfig loginConfig = new LoginConfig();
 loginConfig.setAuthMethod("BASIC");
 ctx.setLoginConfig(loginConfig);
 ctx.addSecurityRole(AUTH_ROLE);
 SecurityConstraint securityConstraint = new SecurityConstraint();
 securityConstraint.addAuthRole(AUTH_ROLE);
 if (enableSSL) {
  securityConstraint.setUserConstraint(TransportGuarantee.CONFIDENTIAL.toString());
 }
 SecurityCollection securityCollection = new SecurityCollection();
 securityCollection.addPattern("/*");
 securityConstraint.addCollection(securityCollection);
 ctx.addConstraint(securityConstraint);
}

public void customize(Context context) {
  LoginConfig loginConfig = new LoginConfig();
  loginConfig.setAuthMethod("KEYCLOAK");
  context.setLoginConfig(loginConfig);