spring中得到servletContext对象方法

1.spring得到servletContext，这个和session没有什么关系，上下文可以说是一个session容器，一个上下文可以有多个会话session

在web.xml中有以下配置后。加入spring对上下文的监听，

<listener>
       <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

在后台用一下代码就可以得到javax.servlet.ServletContext

ContextLoader.getCurrentWebApplicationContext().getServletContext()

2.cxf得到session的方法，这个仅仅是为了测试每次webservice请求session不一样

package com.gaeainfo.tclgb.ws;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionContext;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.handler.MessageContext;

import org.apache.cxf.transport.http.AbstractHTTPDestination;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.springframework.stereotype.Component;
import org.springframework.web.context.ContextLoader;

@Component(value="loginManagerWs")
public class UserManagerWebServiceImpl implements UserManagerWebService {

//会自动注入，配置了cxf监听之后
    @Resource
      private WebServiceContext context;
    @Override
    public String showUserInfo() {
        /*String userName = (String) session.getAttribute("userName");
        String depName = (String) session.getAttribute("depName");

        Document doc = DocumentHelper.createDocument();
        Element elt = doc.addElement("root").addElement("userName").addText(userName).addElement("depName").addText(depName);
        String result = doc.asXML();*/
        MessageContext ctx = context.getMessageContext();
           HttpServletRequest request = (HttpServletRequest)
            ctx.get(AbstractHTTPDestination.HTTP_REQUEST);
           System.out.println(request.getSession().getId());

        return "";
    }

}