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  • 非IoC方式访问Servlet API的两种方法

    使用ActionContext访问
    ActionContext来自com.opensymphony.xwork2.ActionContext

    具体实现代码段如下:

    <span style="font-size:14px;">public class UserAction01 extends ActionSupport {
    	
    	private String username;
    	private String password;
    	private Map<String, Object> request;
    	private Map<String, Object> session;
    	private Map<String, Object> application;	
    	
    	public String login(){
    		//获取对象
    		ActionContext ac=ActionContext.getContext();
    		request=(Map<String, Object>)ac.get("request");
    		session=ac.getSession();
    		application=ac.getApplication();
    		//保存数据
    		request.put("loginAddress", "您本次登录地点是:北京");
    		session.put("username",username);
    		application.put("online","当前在线人数:XXX");</span>
    此种方式获得的request,session,application均为Map集合形式。

    ——————————————————————————————————————————

    使用ServletActionContext访问
    ServletActionContext来自org.apache.struts2.ServletActionContext
    具体实现代码段如下:

    <span style="font-family:Comic Sans MS;font-size:14px;">public class UserAction03 extends ActionSupport {
    
    	private String username;
    	private String password;
    	private HttpServletRequest request;
    	private HttpSession session;
    	private ServletContext application;
    
    	public String login() {
    		// 获取对象
    		request = ServletActionContext.getRequest();
    		session = request.getSession();
    		application = ServletActionContext.getServletContext();
    		// 保存数据
    		request.setAttribute("loginAddress", "您本次登录地点是:北京");
    		session.setAttribute("username",username);
    		application.setAttribute("online","当前在线人数:XXX");</span>
    



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  • 原文地址:https://www.cnblogs.com/archermeng/p/7537537.html
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