获取ServletAPI

爱被打了一巴掌 2024-02-17 22:49 42阅读 0赞

一)、通过ActionContext获取（struts建议）:

ActionContext ctx = ActionContext.getContext();
    	   ctx.put("request", "wawawa");
    	   ctx.getSession().put("session", "hehehehe");
    	   ctx.getApplication().put("application", "hahahaha");
     //对map集合的操纵

二）、ServletActionContext获取（可获取真正的HttpServletRequest）

//获取HttpServletRequest 
    	   HttpServletRequest req = ServletActionContext.getRequest();
    	   req.setAttribute("request", "********");
    	    //获取HttpServletSession
    	   req.getSession().setAttribute("session", "&&&&&&&&&");
    	     //获取application
    	   ServletActionContext.getServletContext().setAttribute("application", "^^^^^^^^^^");
    
    //输出操作
        Request = ${requestScope.request }; 
        Session = ${sessionScope.session };
        Application = ${applicationScope.application }

三）、通过特定的接口（了解）----（”侵入式“编程，污染了POJO类）

package com.action;
    
    import java.util.Map;
    
    import org.apache.struts2.interceptor.ApplicationAware;
    import org.apache.struts2.interceptor.RequestAware;
    import org.apache.struts2.interceptor.SessionAware;
    
    public class TestAction implements RequestAware,SessionAware,ApplicationAware{
    	Map<String, Object> request1;
    	Map<String, Object> session1;
    	Map<String, Object> application1;
    	
         public String aaa(){
        	 return "success";
         }
    
    	@Override
    	public void setApplication(Map<String, Object> application) {
    		// TODO Auto-generated method stub
    		application.put("application", "aaaaaaaaaa");
    		this.application1 = application;
    	}
    
    	@Override
    	public void setSession(Map<String, Object> session) {
    		// TODO Auto-generated method stub
    		session.put("session", "sssssssss");
    		this.session1 = session;
    	}
    
    	@Override
    	public void setRequest(Map<String, Object> request) {
    		// TODO Auto-generated method stub
    		request.put("request", "rrrrrrrrrr");
    		this.request1 = request;
    	}
         
         
    }
    
    
    
    //输出
        Request = ${requestScope.request }; 
        Session = ${sessionScope.session };
        Application = ${applicationScope.application }