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Spring Framework example source code file (ServletWebRequest.java)

This example Spring Framework source code file (ServletWebRequest.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

http, httpservletresponse, httpservletresponse, if-modified-since, last-modified, map, nativewebrequest, object, object, request, response, security, servlet, servletrequestattributes, servletwebrequest, servletwebrequest, string, string, stringbuffer, util

The Spring Framework ServletWebRequest.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;

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

import org.springframework.util.StringUtils;

/**
 * {@link WebRequest} adapter for an {@link javax.servlet.http.HttpServletRequest}.
 *
 * @author Juergen Hoeller
 * @since 2.0
 */
public class ServletWebRequest extends ServletRequestAttributes implements NativeWebRequest {

	private static final String HEADER_IF_MODIFIED_SINCE = "If-Modified-Since";

	private static final String HEADER_LAST_MODIFIED = "Last-Modified";


	private HttpServletResponse response;

	private boolean notModified = false;


	/**
	 * Create a new ServletWebRequest instance for the given request.
	 * @param request current HTTP request
	 */
	public ServletWebRequest(HttpServletRequest request) {
		super(request);
	}

	/**
	 * Create a new ServletWebRequest instance for the given request/response pair.
	 * @param request current HTTP request
	 * @param response current HTTP response (for automatic last-modified handling)
	 */
	public ServletWebRequest(HttpServletRequest request, HttpServletResponse response) {
		super(request);
		this.response = response;
	}


	/**
	 * Exposes the native {@link HttpServletRequest} that we're wrapping (if any).
	 */
	public final HttpServletResponse getResponse() {
		return this.response;
	}

	public Object getNativeRequest() {
		return getRequest();
	}

	public Object getNativeResponse() {
		return getResponse();
	}


	public String getParameter(String paramName) {
		return getRequest().getParameter(paramName);
	}

	public String[] getParameterValues(String paramName) {
		return getRequest().getParameterValues(paramName);
	}

	public Map getParameterMap() {
		return getRequest().getParameterMap();
	}

	public Locale getLocale() {
		return getRequest().getLocale();
	}

	public String getContextPath() {
		return getRequest().getContextPath();
	}

	public String getRemoteUser() {
		return getRequest().getRemoteUser();
	}

	public Principal getUserPrincipal() {
		return getRequest().getUserPrincipal();
	}

	public boolean isUserInRole(String role) {
		return getRequest().isUserInRole(role);
	}

	public boolean isSecure() {
		return getRequest().isSecure();
	}


	public boolean checkNotModified(long lastModifiedTimestamp) {
		if (lastModifiedTimestamp >= 0 && !this.notModified &&
				(this.response == null || !this.response.containsHeader(HEADER_LAST_MODIFIED))) {
			long ifModifiedSince = getRequest().getDateHeader(HEADER_IF_MODIFIED_SINCE);
			this.notModified = (ifModifiedSince >= (lastModifiedTimestamp / 1000 * 1000));
			if (this.response != null) {
				if (this.notModified) {
					this.response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
				}
				else {
					this.response.setDateHeader(HEADER_LAST_MODIFIED, lastModifiedTimestamp);
				}
			}
		}
		return this.notModified;
	}

	public boolean isNotModified() {
		return this.notModified;
	}


	public String getDescription(boolean includeClientInfo) {
		HttpServletRequest request = getRequest();
		StringBuffer buffer = new StringBuffer();
		buffer.append("uri=").append(request.getRequestURI());
		if (includeClientInfo) {
			String client = request.getRemoteAddr();
			if (StringUtils.hasLength(client)) {
				buffer.append(";client=").append(client);
			}
			HttpSession session = request.getSession(false);
			if (session != null) {
				buffer.append(";session=").append(session.getId());
			}
			String user = request.getRemoteUser();
			if (StringUtils.hasLength(user)) {
				buffer.append(";user=").append(user);
			}
		}
		return buffer.toString();
	}

	public String toString() {
		return "ServletWebRequest: " + getDescription(true);
	}

}

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