struts2笔记02-ActionContext

package com.test.action;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;

public class TestActionContextAction {
    public String execute() {
        // 1.获取ActionContext对象
        ActionContext actionContext = ActionContext.getContext();

        // 2.获取application对应的map，并向其中添加一个属性
        Map<String, Object> applicationMap = actionContext.getApplication();
        applicationMap.put("applicationKey", "applicationValue");

        // 3、session
        Map<String, Object> sessionMap = actionContext.getSession();
        sessionMap.put("sessionKey", "sessionValue");

        //4、request
        Map<String, Object> requestMap = (Map<String, Object>) actionContext.get("request");
        
        requestMap.put("requestKey", "requestValue");
        
        //5、请求参数,只能读，不能写，写也不出错
        Map<String,Object> parameters=actionContext.getParameters();
        System.out.println(((String[])parameters.get("name"))[1]);
        
        return "success";
    }
}