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Spring Framework example source code file (WebRequest.java)

This example Spring Framework source code file (WebRequest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

locale, map, map, principal, principal, requestattributes, requestattributes, security, string, string, util, webrequest

The Spring Framework WebRequest.java source code

/*
 * Copyright 2002-2008 the original author or authors.
 *
 * 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 org.springframework.web.context.request;

import java.security.Principal;
import java.util.Locale;
import java.util.Map;

/**
 * Generic interface for a web request. Mainly intended for generic web
 * request interceptors, giving them access to general request metadata,
 * not for actual handling of the request.
 *
 * @author Juergen Hoeller
 * @since 2.0
 * @see WebRequestInterceptor
 */
public interface WebRequest extends RequestAttributes {

	/**
	 * Return the request parameter of the given name, or <code>null if none.
	 * <p>Retrieves the first parameter value in case of a multi-value parameter.
	 * @see javax.servlet.http.HttpServletRequest#getParameter(String)
	 */
	String getParameter(String paramName);

	/**
	 * Return the request parameter values for the given parameter name,
	 * or <code>null if none.
	 * <p>A single-value parameter will be exposed as an array with a single element.
	 * @see javax.servlet.http.HttpServletRequest#getParameterValues(String)
	 */
	String[] getParameterValues(String paramName);

	/**
	 * Return a immutable Map of the request parameters, with parameter names as map keys
	 * and parameter values as map values. The map values will be of type String array.
	 * <p>A single-value parameter will be exposed as an array with a single element.
	 * @see javax.servlet.http.HttpServletRequest#getParameterMap()
	 */
	Map getParameterMap();

	/**
	 * Return the primary Locale for this request.
	 * @see javax.servlet.http.HttpServletRequest#getLocale()
	 */
	Locale getLocale();

	/**
	 * Return the context path for this request
	 * (usually the base path that the current web application is mapped to).
	 * @see javax.servlet.http.HttpServletRequest#getContextPath()
	 */
	String getContextPath();

	/**
	 * Return the remote user for this request, if any.
	 * @see javax.servlet.http.HttpServletRequest#getRemoteUser()
	 */
	String getRemoteUser();

	/**
	 * Return the user principal for this request, if any.
	 * @see javax.servlet.http.HttpServletRequest#getUserPrincipal()
	 */
	Principal getUserPrincipal();

	/**
	 * Determine whether the user is in the given role for this request.
	 * @see javax.servlet.http.HttpServletRequest#isUserInRole(String)
	 */
	boolean isUserInRole(String role);

	/**
	 * Return whether this request has been sent over a secure transport
	 * mechanism (such as SSL).
	 * @see javax.servlet.http.HttpServletRequest#isSecure()
	 */
	boolean isSecure();

	/**
	 * Check whether the request qualifies as not modified given the
	 * supplied last-modified timestamp (as determined by the application).
	 * <p>This will also transparently set the appropriate response headers,
	 * for both the modified case and the not-modified case.
	 * <p>Typical usage:
	 * <pre class="code">
	 * public String myHandleMethod(WebRequest webRequest, Model model) {
	 *   long lastModified = // application-specific calculation
	 *   if (request.checkNotModified(lastModified)) {
	 *     // shortcut exit - no further processing necessary
	 *     return null;
	 *   }
	 *   // further request processing, actually building content
	 *   model.addAttribute(...);
	 *   return "myViewName";
	 * }</pre>
	 * @param lastModifiedTimestamp the last-modified timestamp that
	 * the application determined for the underlying resource
	 * @return whether the request qualifies as not modified,
	 * allowing to abort request processing and relying on the response
	 * telling the client that the content has not been modified
	 */
	boolean checkNotModified(long lastModifiedTimestamp);

	/**
	 * Get a short description of this request,
	 * typically containing request URI and session id.
	 * @param includeClientInfo whether to include client-specific
	 * information such as session id and user name
	 * @return the requested description as String
	 */
	String getDescription(boolean includeClientInfo);

}

Other Spring Framework examples (source code examples)

Here is a short list of links related to this Spring Framework WebRequest.java source code file:

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