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The GWT Bean Validators is a collection of JSR-303/JSR-349/JSR 380 bean validators. It can be used on server and with the help of GWT even on client side. This packages contains rest services and validator for phone numbers based on gwtp-rest dispatcher and spring to reduce client side code.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License. You may obtain a
 * copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package de.knightsoftnet.validators.server.security;

import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * authentication failure handler for gwt applications. based on the work of
 * https://github.com/imrabti/gwtp-spring-security
 *
 * @author Manfred Tremmel
 */
@Component
public class AuthFailureHandler extends SimpleUrlAuthenticationFailureHandler {
  @Override
  public void onAuthenticationFailure(final HttpServletRequest prequest,
      final HttpServletResponse presponse, final AuthenticationException pexception)
      throws IOException, ServletException {
    presponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);

    final PrintWriter writer = presponse.getWriter();
    writer.write(pexception.getMessage());
    writer.flush();
  }
}