Java tutorial
/* * JSR 354 Stock-Trading Example * Copyright 2005-2013, Werner Keil and individual contributors by the @author tag. * See the copyright.txt in the distribution for a full listing of individual contributors. * * Licensed 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 net.java.javamoney.examples.tradingapp.web; import net.java.javamoney.examples.tradingapp.business.Credentials; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.validation.Errors; import org.springframework.validation.Validator; public class LogonValidator implements Validator { private final Log logger = LogFactory.getLog(getClass()); public boolean supports(Class clazz) { return clazz.equals(Credentials.class); } public void validate(Object obj, Errors errors) { Credentials credentials = (Credentials) obj; if (credentials == null) { errors.rejectValue("username", "error.login.not-specified", null, "Value required."); } else { logger.info("Validating user credentials for: " + credentials.getUsername() + " @ " + credentials.getMarket()); if (credentials.getUsername().equals("guest") == false) { errors.rejectValue("username", "error.login.invalid-user", null, "Incorrect Username."); } else { if (credentials.getPassword().equals("guest") == false) { errors.rejectValue("password", "error.login.invalid-pass", null, "Incorrect Password."); } } } } }