struts中操作request,session，strutsrequest

struts中操作request,session，strutsrequest

在Action類中操作request,session

方法一、利用ActionContext.getContext().get("request");

//返回的是Map集合Map<String,Object> request = (Map<String,Object>)ActionContext.getContext().get("request");//放入requestrequest.put(key, value);//取出request.get("key");Map<String,Object> session = ActionContext.getContext().getSession();session.put(key, value);session.get(key);

方法二、使用ServletActionContext.getRequest();

//返回的是HttpServletRequest HttpServletRequest request = ServletActionContext.getRequest();//setsetAttribute放入request.setAttribute(arg0, arg1);//etAttribute取出 request.getAttribute(arg0)//產生Session需要先產生RequestHttpServletRequest req = ServletActionContext.getRequest();//再用request.getSession();產生sessionHttpSession session = req.getSession();session.setAttribute(arg0, arg1);session.getAttribute(arg0);

法三、使用RequestAware,SessionAware介面

1.實現這兩個介面

public class NewsAction extends ActionSupport implements RequestAware,SessionAware {}

2.定義兩個成員變數

private Map<String,Object> session;private Map<String,Object> request;

3.重寫介面中的方法。

@Override    public void setRequest(Map<String, Object> arg0) {        this.request = arg0;            }    @Override    public void setSession(Map<String, Object> arg0) {        // TODO Auto-generated method stub        this.session = arg0;    }

4.使用session.put(),session.get(),request.put(),request.get()方法實現

//放入request.put(key, value);//取出request.get("key");session.put(key, value);session.get(key);