java/*
* RequestUtils.java
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Author: Winter Lau (javayou@gmail.com)
* http://dlog4j.sourceforge.net
*/
package com.liusoft.dlog4j.util;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.text.MessageFormat;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Properties;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.liusoft.dlog4j.Globals;
/**
* 用于Request的工具類
* @author Winter Lau
*/
public class RequestUtils extends org.apache.struts.util.RequestUtils{
final static Log log = LogFactory.getLog(RequestUtils.class);
private static Properties header_map;
private static String default_mobile;
static{
InputStream in = RequestUtils.class.getResourceAsStream("/com/liusoft/dlog4j/util/mobile_match.properties");
header_map = new Properties();
try{
header_map.load(in);
default_mobile = header_map.getProperty("empty");
}catch(IOException e){
log.error("加載手機號碼匹配策略文件/mobile_match.conf失敗",e);
}
}
public static boolean isMultipart(HttpServletRequest req) {
return ((req.getContentType() != null) && (req.getContentType()
.toLowerCase().startsWith("multipart")));
}
/**
* 獲取FCKUpload過程中生成的會話ID
* @return
*/
public static String getDlogSessionId(HttpServletRequest req){
//優先從Cookie中獲取ssn_id值
String ssn_id = null;
Cookie cok = RequestUtils.getCookie(req, Globals.SESSION_ID_KEY_IN_COOKIE);
if(cok != null){
ssn_id = cok.getValue();
}
if(StringUtils.isEmpty(ssn_id)){
//如果Cookie得不到則從服務器的會話中讀取
HttpSession ssn = req.getSession(false);
if (ssn != null)
ssn_id = ssn.getId();
}
return ssn_id;
}
/**
* 清除FCKUpload過程中生成的Cookie
* @param req
* @param res
*/
public static void clearDlogSessionId(HttpServletRequest req, HttpServletResponse res){
Cookie cok = RequestUtils.getCookie(req, Globals.SESSION_ID_KEY_IN_COOKIE);
if(cok != null){
cok.setMaxAge(0);
res.addCookie(cok);
}
}
/**
* 獲取COOKIE
*
* @param name
*/
public static Cookie getCookie(HttpServletRequest request, String name) {
Cookie[] cookies = request.getCookies();
if(cookies == null)
return null;
for (int i = 0; i < cookies.length; i++) {
if (name.equals(cookies[i].getName())) {
return cookies[i];
}
}
return null;
}
/**
* 設置COOKIE
*
* @param name
* @param value
* @param maxAge
*/
public static void setCookie(HttpServletRequest request, HttpServletResponse response, String name,
String value, int maxAge) {
Cookie cookie = new Cookie(name, value);
cookie.setMaxAge(maxAge);
String serverName = request.getServerName();
String domain = getDomainOfServerName(serverName);
if(domain!=null && domain.indexOf('.')!=-1){
cookie.setDomain('.' + domain);
}
cookie.setPath("/");
response.addCookie(cookie);
}
/**
* 獲取用戶訪問URL中的根域名
* 例如: www.dlog.cn -> dlog.cn
* @param req
* @return
*/
public static String getDomainOfServerName(String host){
if(StringUtils.isIPAddr(host))
return null;
String[] names = StringUtils.split(host, '.');
int len = names.length;
if(len>=2)
return names[len-2]+'.'+names[len-1];
return host;
}
public static void main(String[] args){
String host = "127.0.0.1";
System.out.println("DOMAIN: " + getDomainOfServerName(host));
host = "dlog.cn";
System.out.println("DOMAIN: " + getDomainOfServerName(host));
host = "abc.mail.dlog.cn";
System.out.println("DOMAIN: " + getDomainOfServerName(host));
}
/**
* 從URL地址中解析出URL前綴，例如
* http://wap.mo168.com:8081/index.jsp -> http://wap.mo168.com:8081
* @param req
* @return
*/
public static String getUrlPrefix(HttpServletRequest req){
StringBuffer url = new StringBuffer(req.getScheme());
url.append("://");
url.append(req.getServerName());
int port = req.getServerPort();
if(port!=80){
url.append(":");
url.append(port);
}
return url.toString();
}
/**
* 獲取訪問的URL全路徑
* @param req
* @return
*/
public static String getRequestURL(HttpServletRequest req){
StringBuffer url = new StringBuffer(req.getRequestURI());
String param = req.getQueryString();
if(param!=null){
url.append('?');
url.append(param);
}
String path = url.toString();
return path.substring(req.getContextPath().length());
}
/**
* 打印所有的頭信息
* @param out
* @param req
*/
public static void dumpHeaders(PrintStream out, HttpServletRequest req){
Enumeration names = req.getHeaderNames();
while(names.hasMoreElements()){
String name = (String)names.nextElement();
out.println(name+"="+req.getHeader(name));
}
}
/**
* 從請求中解析手機號碼
* @param req
* @return
*/
public static String getRequestMobile(HttpServletRequest req){
String mobile = default_mobile;
Iterator keys = header_map.keySet().iterator();
while(keys.hasNext()){
String header = (String)keys.next();
String value = getHeader(req,header);
if(value!=null){
String pattern = (String)header_map.get(header);
MessageFormat mf = new MessageFormat(pattern);
try{
Object[] vs = mf.parse(value);
mobile = (String)vs[0];
if(mobile.startsWith("86"))
mobile = mobile.substring(2);
break;
}catch(Exception e){
log.warn("解析header失敗",e);
dumpHeaders(req, System.err);
continue;
}
}
}
return mobile;
}
/**
* 獲取header信息，名字大小寫無關
* @param req
* @param name
* @return
*/
public static String getHeader(HttpServletRequest req, String name){
String value = req.getHeader(name);
if(value!=null)
return value;
Enumeration names = req.getHeaderNames();
while(names.hasMoreElements()){
String n = (String)names.nextElement();
if(n.equalsIgnoreCase(name)){
return req.getHeader(n);
}
}
return null;
}
/**
* 打印所有頭信息
* @param req
* @param out
*/
public static void dumpHeaders(HttpServletRequest req, PrintStream out){
Enumeration hds = req.getHeaderNames();
out.println("=============== HEADERS ===============");
while(hds.hasMoreElements()){
String name = (String)hds.nextElement();
out.println(name+"="+req.getHeader(name));
}
}
/**
* 判斷手機是否支持某種類型的格式
* @param req
* @param contentType
* @return
*/
public static boolean support(HttpServletRequest req, String contentType){
String accept = getHeader(req, "accept");
if(accept!=null){
accept = accept.toLowerCase();
return accept.indexOf(contentType.toLowerCase())!=-1;
}
return false;
}
/**
* 判斷瀏覽器是否與Mozilla兼容
* @param req
* @return
*/
public static boolean isMozillaCompatible(HttpServletRequest req){
String user_agent = req.getHeader("user-agent");
return user_agent==null || user_agent.indexOf("Mozilla")!=-1;
}
/**
* 獲取瀏覽器提交的整形參數
* @param param
* @param defaultValue
* @return
*/
public static int getParam(HttpServletRequest req, String param, int defaultValue){
try{
String value = req.getParameter(param);
int idx = value.indexOf('#');
if(idx!=-1)
value = value.substring(0,idx);
return Integer.parseInt(value);
}catch(Exception e){}
return defaultValue;
}
/**
* 獲取瀏覽器提交的字符串參數
* @param param
* @param defaultValue
* @return
*/
public static String getParam(HttpServletRequest req, String param, String defaultValue){
String value = req.getParameter(param);
return (StringUtils.isEmpty(value))?defaultValue:value;
}
}