struts2会话域的问题,页面出来了,值出不来
 package sjxy.struts2.servletapi;

import java.util.Map;

import org.apache.struts2.ServletActionContext;

import sjxy.struts2.servletapi.User;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class ServletApiAction extends ActionSupport {

        public String test(){
                ActionContext context=ServletActionContext.getContext();
                Map request=(Map) context.get("request");
                System.out.println("eeeeeee");
                request.put("user", "张三");//在请求域中防止一个值:
                Map<String,Object> session=context.getSession();//获取回话域对象
                User user=new User();
                user.setName("李四");
                user.setSex("男");
                session.put("user", user);
                //获取上下文对象application
                Map<String,Object> application=context.getApplication();
                Object value=application.get("count");
                if(value==null){//说明是第一次被访问
                    application.put("count", new Integer(1));
                }else{
                    Integer number=(Integer)value;
                    number++;
                    application.put("count", number);
                }
        return "success";
        }
}

 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">

    <struts>
    <package name="servletapi" namespace="/api" extends="struts-default">
    <action name="user" class="sjxy.struts2.servletapi.ServletApiAction" >
    <result name="success">/WEB-INF/servlet/test.jsp</result>
    </action>
    </package>
    </struts>

 <%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>

</head>
<body>
<center>
    <h1>用户名称 :${requestScope.user }</h1><br><Hr>
    <h2>用户姓名:${sessionScope.user.name },性别:${sessionScope.user.sex }</h2><br>
   当前页面被访问: <font color="red" size="30">[${applicationScope.count }]</font>次了!
    </center>
</body>
</html>

这是代码图,够不够?还要什么?

1个回答

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