| /* |
| * Copyright 2010 Google Inc. |
| * |
| * 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 com.google.gwt.sample.validation.server; |
| |
| import com.google.gwt.safehtml.shared.SafeHtml; |
| import com.google.gwt.safehtml.shared.SafeHtmlBuilder; |
| import com.google.gwt.sample.validation.client.GreetingService; |
| import com.google.gwt.sample.validation.shared.Person; |
| import com.google.gwt.sample.validation.shared.ServerGroup; |
| import com.google.gwt.user.server.rpc.RemoteServiceServlet; |
| |
| import org.hibernate.validator.engine.ValidationSupport; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import javax.validation.ConstraintViolation; |
| import javax.validation.ConstraintViolationException; |
| import javax.validation.Validation; |
| import javax.validation.Validator; |
| import javax.validation.groups.Default; |
| |
| /** |
| * The server-side implementation of the RPC service. |
| */ |
| @SuppressWarnings("serial") |
| public class GreetingServiceImpl extends RemoteServiceServlet implements |
| GreetingService { |
| |
| private final Validator validator = Validation.buildDefaultValidatorFactory().getValidator(); |
| |
| public SafeHtml greetServer(Person person) throws IllegalArgumentException, |
| ConstraintViolationException { |
| // Verify that the input is valid. |
| Set<ConstraintViolation<Person>> violations = validator.validate(person, |
| Default.class, ServerGroup.class); |
| if (!violations.isEmpty()) { |
| Set<ConstraintViolation<?>> temp = new HashSet<ConstraintViolation<?>>( |
| violations); |
| throw new ConstraintViolationException(temp); |
| } |
| |
| String serverInfo = getServletContext().getServerInfo(); |
| String userAgent = getThreadLocalRequest().getHeader("User-Agent"); |
| |
| // Escape data from the client to avoid cross-site script vulnerabilities. |
| SafeHtmlBuilder builder = new SafeHtmlBuilder(); |
| |
| SafeHtml safeHtml = builder// |
| .appendEscapedLines("Hello, " + person.getName() + "!")// |
| .appendHtmlConstant("<br>")// |
| .appendEscaped("I am running " + serverInfo + ".")// |
| .appendHtmlConstant("<br><br>")// |
| .appendEscaped("It looks like you are using: ")// |
| .appendEscaped(userAgent)// |
| .toSafeHtml(); |
| return safeHtml; |
| } |
| |
| @Override |
| public ValidationSupport dummy() { |
| return null; |
| } |
| } |