| /* |
| * $Id$ |
| * |
| * 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 org.apache.struts2.s1; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.StringTokenizer; |
| |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServletRequest; |
| |
| import org.apache.commons.validator.ValidatorResources; |
| import org.apache.struts.Globals; |
| import org.apache.struts.action.ActionErrors; |
| import org.apache.struts.action.ActionForm; |
| import org.apache.struts.action.ActionMapping; |
| import org.apache.struts.action.ActionServlet; |
| import org.apache.struts.config.ModuleConfig; |
| import org.apache.struts.validator.ValidatorPlugIn; |
| import org.apache.struts2.ServletActionContext; |
| import org.apache.struts2.StrutsException; |
| import org.xml.sax.SAXException; |
| |
| import com.opensymphony.xwork2.ActionContext; |
| import com.opensymphony.xwork2.ActionInvocation; |
| import com.opensymphony.xwork2.TextProvider; |
| import com.opensymphony.xwork2.config.Configuration; |
| import com.opensymphony.xwork2.inject.Inject; |
| import com.opensymphony.xwork2.interceptor.AbstractInterceptor; |
| import com.opensymphony.xwork2.interceptor.ScopedModelDriven; |
| import com.opensymphony.xwork2.util.logging.Logger; |
| import com.opensymphony.xwork2.util.logging.LoggerFactory; |
| |
| /** |
| * Calls the validate() method on the ActionForm, if it exists. The errors are handled |
| * like regular XWork validation errors. Action-level validation flag supported if the |
| * action is a subclass of Struts1Action. |
| */ |
| public class ActionFormValidationInterceptor extends AbstractInterceptor { |
| |
| private String pathnames; |
| private boolean stopOnFirstError; |
| private boolean initialized = false; |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ActionFormValidationInterceptor.class); |
| |
| /** |
| * Delimitter for Validator resources. |
| */ |
| private final static String RESOURCE_DELIM = ","; |
| |
| protected Configuration configuration; |
| |
| @Inject |
| public void setConfiguration(Configuration config) { |
| this.configuration = config; |
| } |
| |
| /** |
| * Initializes the validation resources |
| */ |
| private void initResources(ServletContext servletContext) { |
| if (pathnames != null) { |
| ActionContext ctx = ActionContext.getContext(); |
| try { |
| |
| ValidatorResources resources = this.loadResources(servletContext); |
| |
| |
| String prefix = ctx.getActionInvocation().getProxy().getNamespace(); |
| |
| |
| servletContext.setAttribute(ValidatorPlugIn.VALIDATOR_KEY + prefix, resources); |
| |
| servletContext.setAttribute(ValidatorPlugIn.STOP_ON_ERROR_KEY + '.' |
| + prefix, |
| (this.stopOnFirstError ? Boolean.TRUE : Boolean.FALSE)); |
| } catch (Exception e) { |
| throw new StrutsException( |
| "Cannot load a validator resource from '" + pathnames + "'", e); |
| } |
| } |
| } |
| |
| @Override |
| public String intercept(ActionInvocation invocation) throws Exception { |
| // Lazy load the resources because the servlet context isn't available at init() time |
| synchronized (this) { |
| if (!initialized) { |
| initResources(ServletActionContext.getServletContext()); |
| initialized = true; |
| } |
| } |
| Object action = invocation.getAction(); |
| |
| |
| if ((action instanceof ScopedModelDriven) && |
| (!(action instanceof Struts1Action) || ((Struts1Action)action).isValidate())) { |
| ScopedModelDriven modelDriven = (ScopedModelDriven) action; |
| Object model = modelDriven.getModel(); |
| if (model != null) { |
| HttpServletRequest req = ServletActionContext.getRequest(); |
| Struts1Factory strutsFactory = new Struts1Factory(configuration); |
| ActionMapping mapping = strutsFactory.createActionMapping(invocation.getProxy().getConfig()); |
| ModuleConfig moduleConfig = strutsFactory.createModuleConfig(invocation.getProxy().getConfig().getPackageName()); |
| req.setAttribute(Globals.MODULE_KEY, moduleConfig); |
| req.setAttribute(Globals.MESSAGES_KEY, new WrapperMessageResources((TextProvider)invocation.getAction())); |
| |
| mapping.setAttribute(modelDriven.getScopeKey()); |
| |
| ActionForm form = (ActionForm) model; |
| form.setServlet(new ActionServlet(){ |
| public ServletContext getServletContext() { |
| return ServletActionContext.getServletContext(); |
| } |
| }); |
| ActionErrors errors = form.validate(mapping, req); |
| strutsFactory.convertErrors(errors, action); |
| } |
| } |
| return invocation.invoke(); |
| } |
| |
| /** |
| * Initialize the validator resources for this module. |
| * |
| * @throws IOException if an input/output error is encountered |
| * @throws ServletException if we cannot initialize these resources |
| */ |
| protected ValidatorResources loadResources(ServletContext ctx) |
| throws IOException, ServletException { |
| if ((pathnames == null) || (pathnames.length() <= 0)) { |
| return null; |
| } |
| |
| StringTokenizer st = new StringTokenizer(pathnames, RESOURCE_DELIM); |
| |
| List urlList = new ArrayList(); |
| ValidatorResources resources = null; |
| try { |
| while (st.hasMoreTokens()) { |
| String validatorRules = st.nextToken().trim(); |
| |
| if (LOG.isInfoEnabled()) { |
| LOG.info("Loading validation rules file from '" |
| + validatorRules + "'"); |
| } |
| |
| URL input = |
| ctx.getResource(validatorRules); |
| |
| // If the config isn't in the servlet context, try the class |
| // loader which allows the config files to be stored in a jar |
| if (input == null) { |
| input = getClass().getResource(validatorRules); |
| } |
| |
| if (input != null) { |
| urlList.add(input); |
| } else { |
| throw new ServletException( |
| "Skipping validation rules file from '" |
| + validatorRules + "'. No url could be located."); |
| } |
| } |
| |
| int urlSize = urlList.size(); |
| String[] urlArray = new String[urlSize]; |
| |
| for (int urlIndex = 0; urlIndex < urlSize; urlIndex++) { |
| URL url = (URL) urlList.get(urlIndex); |
| |
| urlArray[urlIndex] = url.toExternalForm(); |
| } |
| |
| resources = new ValidatorResources(urlArray); |
| } catch (SAXException sex) { |
| LOG.error("Skipping all validation", sex); |
| throw new StrutsException("Skipping all validation because the validation files cannot be loaded", sex); |
| } |
| return resources; |
| } |
| |
| /** |
| * @return the pathnames |
| */ |
| public String getPathnames() { |
| return pathnames; |
| } |
| |
| /** |
| * @param pathNames the pathnames to set |
| */ |
| public void setPathnames(String pathNames) { |
| this.pathnames = pathNames; |
| } |
| |
| /** |
| * @return the stopOnFirstError |
| */ |
| public boolean isStopOnFirstError() { |
| return stopOnFirstError; |
| } |
| |
| /** |
| * @param stopOnFirstError the stopOnFirstError to set |
| */ |
| public void setStopOnFirstError(boolean stopOnFirstError) { |
| this.stopOnFirstError = stopOnFirstError; |
| } |
| |
| } |