struts2 session有关问题

struts2 session问题？

Java code

public class CreateUserAction extends ActionSupport {    private static final long serialVersionUID = 1L;    HttpServletRequest request ;    public HttpServletRequest getRequest() {        return request;    }    public void setRequest(HttpServletRequest request) {        this.request = request;    }        @Override    public String execute() throws Exception {        System.out.println("-----CreateUserAction-----");                SysUserPOJO sysUserPOJO = (SysUserPOJO) request.getSession()                .getAttribute("INITCONF");//这行报错                String dir = this.getClass().getProtectionDomain().getCodeSource()                .getLocation().getPath();        String currdir = StringUtils.substring(dir, 0, StringUtils.indexOf(dir,                "WEB-INF"))                + "page" + File.separator + "strutsData";        new InitSysDAO().createUser(sysUserPOJO);        int result = new InitSysDAO().impDBDate(currdir, sysUserPOJO);        ServletContext app = request.getSession().getServletContext();        app.setAttribute("ISBASESYSINIT", null);        if (result == 1) {            return "success";        }        return "DBerror";    }}

严重: Servlet.service() for servlet default threw exception
java.lang.NullPointerException
at com.asideal.action.sysInit.CreateUserAction.execute(CreateUserAction.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

==================================
这是另一个类的 session.set...

  private HttpSession session;

。。。。
}else{

System.out.println("创建表空间......");
initSysDAO.createDataSpace(getsysUser(request));
session.setAttribute("INITCONF",sysUserPOJO);
}


struts2里的session出错。。。。

[解决办法]
request.getSession().getAttribute("INITCONF");
这个得到的是个集合！

你用 SysUserPOJO 类接收错了吧！

先把集合遍历出来 在用 SysUserPOJO 接收！
[解决办法]
SysUserPOJO sysUserPOJO = (SysUserPOJO) request.getSession()不对吧，session类型不对吧。
struts2的session对象
这样写试试：
HttpSession session=ServletActionContext.getRequest().getSession()
[解决办法]
HttpServletRequest request ;
public HttpServletRequest getRequest() {
return request;
}
public void setRequest(HttpServletRequest request) {
this.request = request;
}
这样注入HttpServletRequest request，request当然==null 所以报空指针了！
4楼正解
[解决办法]
public HttpServletRequest getRequest()
{
return ServletActionContext.getRequest();
}
[解决办法]
关于struts2获取session跟往里面存值我的方法是：
往session里放值ActionContext.getContext().getSession().put("name",value);
往session里取值ActionContext.getContext().getSession().get("name");

[解决办法]
HttpServletRequest request ;
public HttpServletRequest getRequest() {
return request;
}
request没有赋值吧

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