PrivateRequestWrapper.java

/*
 * Copyright 2007-2009 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 net.paoding.rose.web.portal.impl;

import java.io.BufferedReader;
import java.io.IOException;
import java.util.Collection;
import java.util.Enumeration;
import java.util.Locale;
import java.util.Map;

import javax.servlet.AsyncContext;
import javax.servlet.DispatcherType;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.http.Part;

/**
 * 私有请求包装器，但不继承于 {@link HttpServletRequestWrapper}
 * 
 * @author 王志亮 [qieqie.wang@gmail.com]
 * 
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
public class PrivateRequestWrapper implements HttpServletRequest {

	private HttpServletRequest request;

	private Object mutex;

	public PrivateRequestWrapper(HttpServletRequest request) {
		this.request = request;
		this.mutex = request;
	}

	protected HttpServletRequest getRequest() {
		return request;
	}

	@Override
	public RequestDispatcher getRequestDispatcher(String path) {
		return getRequest().getRequestDispatcher(path);
	}

	@Override
	public Object getAttribute(String name) {
		return getRequest().getAttribute(name);
	}

	@Override

	public Enumeration getAttributeNames() {
		synchronized (mutex) {
			return getRequest().getAttributeNames();
		}
	}

	@Override
	public void removeAttribute(String name) {
		synchronized (mutex) {
			getRequest().removeAttribute(name);
		}
	}

	@Override
	public void setAttribute(String name, Object value) {
		synchronized (mutex) {
			getRequest().setAttribute(name, value);
		}
	}

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

	@Override
	public String getQueryString() {
		return getRequest().getQueryString();
	}

	@Override
	public String getRequestURI() {
		return getRequest().getRequestURI();
	}

	@Override
	public String getServletPath() {
		return getRequest().getServletPath();
	}

	@Override
	public StringBuffer getRequestURL() {
		return getRequest().getRequestURL();
	}

	@Override
	public String getAuthType() {
		return getRequest().getAuthType();
	}

	@Override
	public Cookie[] getCookies() {
		synchronized (mutex) {
			return getRequest().getCookies();
		}
	}

	@Override
	public long getDateHeader(String name) {
		synchronized (mutex) {
			return getRequest().getDateHeader(name);
		}
	}

	@Override
	public String getHeader(String name) {
		synchronized (mutex) {
			return getRequest().getHeader(name);
		}
	}

	@Override

	public Enumeration getHeaders(String name) {
		synchronized (mutex) {
			return getRequest().getHeaders(name);
		}
	}

	@Override

	public Enumeration getHeaderNames() {
		synchronized (mutex) {
			return getRequest().getHeaderNames();
		}
	}

	@Override
	public int getIntHeader(String name) {
		synchronized (mutex) {
			return getRequest().getIntHeader(name);
		}
	}

	@Override
	public String getMethod() {
		return getRequest().getMethod();
	}

	@Override
	public String getPathInfo() {
		return getRequest().getPathInfo();
	}

	@Override
	public String getPathTranslated() {
		return getRequest().getPathTranslated();
	}

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

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

	@Override
	public java.security.Principal getUserPrincipal() {
		return getRequest().getUserPrincipal();
	}

	@Override
	public String getRequestedSessionId() {
		return getRequest().getRequestedSessionId();
	}

	@Override
	public HttpSession getSession(boolean create) {
		return getRequest().getSession(create);
	}

	@Override
	public HttpSession getSession() {
		return getRequest().getSession();
	}

	@Override
	public boolean isRequestedSessionIdValid() {
		return getRequest().isRequestedSessionIdValid();
	}

	@Override
	public boolean isRequestedSessionIdFromCookie() {
		return getRequest().isRequestedSessionIdFromCookie();
	}

	@Override
	public boolean isRequestedSessionIdFromURL() {
		return getRequest().isRequestedSessionIdFromURL();
	}

	@SuppressWarnings("deprecation")
	@Override
	public boolean isRequestedSessionIdFromUrl() {
		return getRequest().isRequestedSessionIdFromUrl();
	}

	@Override
	public String getCharacterEncoding() {
		return getRequest().getCharacterEncoding();
	}

	@Override
	public void setCharacterEncoding(String enc) throws java.io.UnsupportedEncodingException {
		synchronized (mutex) {
			getRequest().setCharacterEncoding(enc);
		}
	}

	@Override
	public int getContentLength() {
		return getRequest().getContentLength();
	}

	@Override
	public String getContentType() {
		return getRequest().getContentType();
	}

	@Override
	public ServletInputStream getInputStream() throws IOException {
		synchronized (mutex) {
			return getRequest().getInputStream();
		}
	}

	@Override
	public String getParameter(String name) {
		synchronized (mutex) {
			return getRequest().getParameter(name);
		}
	}

	@Override

	public synchronized Map getParameterMap() {
		// 如果没有同步，tomcat下可能出现java.lang.IllegalStateException: No modifications
		// are allowed to a locked ParameterMap
		// see http://code.google.com/p/paoding-rose/issues/detail?id=9
		return getRequest().getParameterMap();
	}

	@Override
	public Enumeration getParameterNames() {
		return getRequest().getParameterNames();
	}

	@Override
	public String[] getParameterValues(String name) {
		return getRequest().getParameterValues(name);
	}

	@Override
	public String getProtocol() {
		return getRequest().getProtocol();
	}

	@Override
	public String getScheme() {
		return getRequest().getScheme();
	}

	@Override
	public String getServerName() {
		return getRequest().getServerName();
	}

	@Override
	public int getServerPort() {
		return getRequest().getServerPort();
	}

	@Override
	public BufferedReader getReader() throws IOException {
		synchronized (mutex) {
			return getRequest().getReader();
		}
	}

	@Override
	public String getRemoteAddr() {
		return getRequest().getRemoteAddr();
	}

	@Override
	public String getRemoteHost() {
		return getRequest().getRemoteHost();
	}

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

	@Override
	public Enumeration getLocales() {
		return getRequest().getLocales();
	}

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

	@SuppressWarnings("deprecation")
	@Override
	public String getRealPath(String path) {
		return getRequest().getRealPath(path);
	}

	@Override
	public int getRemotePort() {
		return getRequest().getRemotePort();
	}

	@Override
	public String getLocalName() {
		return getRequest().getLocalName();
	}

	@Override
	public String getLocalAddr() {
		return getRequest().getLocalAddr();
	}

	@Override
	public int getLocalPort() {
		return getRequest().getLocalPort();
	}

	// @commited by https://github.com/wenjunli 
	// @see https://github.com/Qieqie/paoding-rose/pull/24/files
	// THANKS!
	//
	// 下面的方法，是为了解决portal不能在tomcat7、resin4下面运行的问题
	// https://code.google.com/p/paoding-rose/issues/detail?id=26
	//
	// 问题产生的原因：HttpServletRequest接口在servlet api
	// 3.0中增加了下面的方法，导致portal在tomcat7、resin4下面发生java.lang.AbstractMethodError异常

	@Override
	public AsyncContext getAsyncContext() {
		return getRequest().getAsyncContext();
	}

	@Override
	public DispatcherType getDispatcherType() {
		return getRequest().getDispatcherType();
	}

	@Override
	public ServletContext getServletContext() {
		return getRequest().getServletContext();
	}

	@Override
	public boolean isAsyncStarted() {
		return getRequest().isAsyncStarted();
	}

	@Override
	public boolean isAsyncSupported() {
		return getRequest().isAsyncSupported();
	}

	@Override
	public AsyncContext startAsync() throws IllegalStateException {
		return getRequest().startAsync();
	}

	@Override
	public AsyncContext startAsync(ServletRequest servletRequest, ServletResponse servletResponse)
			throws IllegalStateException {
		return getRequest().startAsync(servletRequest, servletResponse);
	}

	@Override
	public boolean authenticate(HttpServletResponse response) throws IOException, ServletException {
		return getRequest().authenticate(response);
	}

	@Override
	public Part getPart(String name) throws IOException, ServletException {
		return getRequest().getPart(name);
	}

	@Override
	public Collection<Part> getParts() throws IOException, ServletException {
		return getRequest().getParts();
	}

	@Override
	public void login(String username, String password) throws ServletException {
		getRequest().login(username, password);
	}

	@Override
	public void logout() throws ServletException {
		getRequest().logout();
	}
	
	// end, @commited by https://github.com/wenjunli

}