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struts2 访问或添加request/session/application属性

第一种方法:

ActionContext ctx = ActionContext.getContext();      ctx.put("r1", list);//向request中添加属性      ctx.getSession().put("s1",list);//向session中添加属性      ctx.getApplication().put("a1", list);//向application中添加属性 

 

    HttpSession session =null;              session = ServletActionContext.getRequest().getSession();              if(session.getAttribute("user") != null) {                  session.removeAttribute("user");              }              session.setAttribute("user", user);      Map<String,Object> session = null;              session = ActionContext.getContext().getSession();              if(session.containsKey("user")){                  session.remove("user");              }                            session.put("user", user);  

 

第二种方法:

使用 ServletRequestAware接口

 

    public class LoginAction4 extends ActionSupport implements ServletRequestAware {                    private HttpServletRequest request;          private HttpSession session;          private ServletContext application;                                        public String execute() {              request.setAttribute("r1", "r1");              session.setAttribute("s1", "s1");              application.setAttribute("a1", "a1");              return SUCCESS;           }                            @Override          public void setServletRequest(HttpServletRequest request) {              this.request = request;              this.session = request.getSession();              this.application = session.getServletContext();          }                }  

 

 struts2访问request、session、application属性

第一种方法:

使用struts tag:

    <s:property value="http://www.mamicode.com/#request.r1"/>       <s:property value="http://www.mamicode.com/#session.s1"/>       <s:property value="http://www.mamicode.com/#application.a1"/>   

 第二种方法:

使用jsp对象

    <%=request.getAttribute("r1") %> <br />      <%=session.getAttribute("s1") %> <br />      <%=application.getAttribute("a1")%> <br />  

 

struts2 访问或添加request/session/application属性