Struts2 入门 初步了解Struts2(4) 访问Web元素之IoC(控制反转)与依赖容器

Web元素有 Map类型的Request ,Session,Application 和 真实类型的HttpServletRequest，HttpSession，ServletContext。

取得Map类型的用IoC：

InverseofControl.java 

package com.voidzxm.action1;

import java.util.Map;

import org.apache.struts2.interceptor.ApplicationAware;
import org.apache.struts2.interceptor.RequestAware;
import org.apache.struts2.interceptor.SessionAware;

import com.opensymphony.xwork2.ActionSupport;

public class InverseofControl extends ActionSupport implements RequestAware , SessionAware,ApplicationAware{
	
	private Map<String, Object> request;
	private Map<String, Object> session;
	private Map<String, Object> application;
		
	@Override
	public String execute() throws Exception {
		// TODO Auto-generated method stub
		request.put("r11", "r11");
		session.put("s1", "s2");
		application.put("a1", "a1");
		return SUCCESS;
	}
	@Override
	public void setApplication(Map<String, Object> arg0) {
		// TODO Auto-generated method stub
		this.application = arg0;
		
	}
	@Override
	public void setSession(Map<String, Object> arg0) {
		// TODO Auto-generated method stub		
		this.session = arg0;
		
	}
	@Override
	public void setRequest(Map<String, Object> arg0) {
		// TODO Auto-generated method stub
		this.request = arg0;
	}
	
	
	
}