springMVC 获取request 处理全局session业务

<a target=_blank href="http://blog.csdn.net/is_zhoufeng/article/details/7559756" style="color: rgb(0, 0, 0); text-decoration: none; font-family: 'Microsoft YaHei'; font-size: 20px; line-height: 30px; ">springMVC中得到request对象，session对象</a>

RequestAttributes ra = RequestContextHolder.getRequestAttributes();  HttpServletRequest request = ((ServletRequestAttributes)ra).getRequest();  request.getSession().setAttribute(name, webuser);

(1)web.xml

 <session-config>
        <session-timeout>30</session-timeout>
 </session-config>

注：30指分钟

也可以让所有的Control继承一个BaseControl类 ，BaseControl类的定义为：

package com.jrgy.web.controller;import java.io.Serializable;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.context.request.RequestAttributes;import org.springframework.web.context.request.RequestContextHolder;import org.springframework.web.context.request.ServletRequestAttributes;import com.jrgy.pojo.domain.FriendlyLink;import com.jrgy.pojo.domain.ItemInfo;import com.jrgy.pojo.domain.WebUser;import com.jrgy.util.CacheManager;import com.jrgy.util.Constants;import com.jrgy.web.service.IAssociationManager;import com.jrgy.web.service.IWebIndexManager;import com.jrgy.web.service.IWebItemInfoManager;public class BaseController implements Serializable{private static final long serialVersionUID = 8695834026800952113L;/** * ʵ��� * */////HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder//.getRequestAttributes()).getRequest();CacheManager cacheManager = CacheManager.getInstance();@AutowiredIWebIndexManager webIndexManager;@AutowiredIWebItemInfoManager webItemInfoManager;@AutowiredIAssociationManager webAssociationManager;/** * 导航栏 * */List<ItemInfo> listitemInfo = new ArrayList<ItemInfo>();/** * 友情链接 * */List<FriendlyLink> friendLyLinkLs = new ArrayList<FriendlyLink>();List itmeCode = new ArrayList();Map map = new HashMap();/** * ��ȡ������� * @param Object ����Ķ��� * @param String KEY ֵ * @return Object * @throws Exception */public Object getCache(Object object, String key) {Object cacheDate = cacheManager.get(key);if (cacheDate != null) {object = cacheDate;}return object;}/** *  * @param key * @param Object * @return void * @throws Exception */public void addCache(String key, Object object) {cacheManager.delCacheByKey(key);cacheManager.add(key, object);}public void addSessionWebUser(String name,WebUser webuser) {RequestAttributes ra = RequestContextHolder.getRequestAttributes();  HttpServletRequest request = ((ServletRequestAttributes)ra).getRequest();  request.getSession().setAttribute(name, webuser);}public Object getWebUserAttribute(String name) {// TODO Auto-generated method stubRequestAttributes ra = RequestContextHolder.getRequestAttributes();  HttpServletRequest request = ((ServletRequestAttributes)ra).getRequest();  Object obj=null;if (!name.trim().equals("")) {obj= request.getSession().getAttribute(name);}return obj;}}

</pre><p><span style="color:rgb(54,46,43); font-family:Arial; font-size:14px; line-height:26px">这样 ，每个Control就能够方便的得到Servlet API 中的对象了。</span></p><p><span style="color:rgb(54,46,43); font-family:Arial; font-size:14px; line-height:26px"></span></p><p> 登陆保存用户到session</p><p></p><pre name="code" class="java">@RequestMapping("/islogin.do")public void islogin(HttpServletRequest request, HttpServletResponse response){String sessionId = request.getSession().getId();response.setContentType("text/html;charset=utf-8");String userName = request.getParameter("userName");String passWord = request.getParameter("userPassWord");WebUser webuser=new WebUser();String Msg = null;try {if(!StrUtil.checkStr(userName)){Msg="2";}else if(!StrUtil.checkStr(passWord)){Msg="3";}else{webuser=mainWebUserManager.userLogin(userName,passWord);if (webuser!=null) {if(Constants.webUserStruts.equals(webuser.getWebUserType())){Msg = "5";}else{Msg = "1";addSessionWebUser(Constants.LOGIN_WebUSER,webuser);log.debug(userName+"");}}else{Msg = "4";}}PrintWriter out = response.getWriter();String outMsg = "{Msg:"+Msg+"}";out.print(outMsg);out.flush();out.close();} catch (Exception e) {e.printStackTrace();}}

在需要使用session以下代码：

                String name=Constants.LOGIN_WebUSER;WebUser web=(WebUser) getWebUserAttribute(name);if (web!=null) {currentUser=web.getWebUserName();}

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