struts2获取request，session，application

Java代码 

ActionContext context ;//该方法还可以取得值栈（getValueStack()）,使用push（obj）往值栈中放数据    

Map request ;    

Map session ;    

Map application ;    

 

//以下初始化方法要放在方法中    

context = ActionContext.getContext();    

 

request = (Map)context.get("request");//获取request    

session = context.getSession();//获取session    

application = context.getApplication();//获取application    

 

request.put("req", "request属性");    

session.put("ses", "session属性");    

application.put("app", "application属性");   

 

ActionContext context ;//该方法还可以取得值栈（getValueStack()）,使用push（obj）往值栈中放数据

Map request ;

Map session ;

Map application ;

 

//以下初始化方法要放在方法中

context = ActionContext.getContext();

 

request = (Map)context.get("request");//获取request

session = context.getSession();//获取session

application = context.getApplication();//获取application

 

request.put("req", "request属性");

session.put("ses", "session属性");

application.put("app", "application属性");

Xml代码 

<!--jsp中取值-->   

request属性接受:<s:property value="#request.req"/>${requestScope.req}    

session属性接受:<s:property value="#session.ses"/>${sessionScope.ses}    

application属性接受：<s:property value="#application.app"/>${applicationScope.app}   

 

<!--jsp中取值-->

request属性接受:<s:property value="#request.req"/>${requestScope.req}

session属性接受:<s:property value="#session.ses"/>${sessionScope.ses}

application属性接受：<s:property value="#application.app"/>${applicationScope.app}

    2.1.2 IoC模式

 

Java代码 

//实现接口    

public class LoginAction extends ActionSupport implements RequestAware,SessionAware,ApplicationAware    

 

Map request ;    

Map session ;    

Map application ;    

 

public void setRequest(Map request) {    

        this.request = request;    

}    

public void setSession(Map session) {    

    this.session = session;    

}    

public void setApplication(Map application) {    

    this.application = application;    

}       

 

//实现接口

public class LoginAction extends ActionSupport implements RequestAware,SessionAware,ApplicationAware

 

Map request ;

Map session ;

Map application ;

 

public void setRequest(Map request) {

  this.request = request;

}

public void setSession(Map session) {

 this.session = session;

}

public void setApplication(Map application) {

 this.application = application;

}

2.2 与servlet有关

 

    2.2.1 非IoC模式

 

Java代码 

HttpServletRequest request;    

HttpSession session ;    

ServletContext application;    

 

request = ServletActionContext.getRequest();//获取request    

session = request.getSession();    

application = ServletActionContext.getServletContext();//获取application    

 

request.setAttribute("req", "request属性111");    

session.setAttribute("ses", "session属性111");    

application.setAttribute("app", "application属性111");   

 

HttpServletRequest request;

HttpSession session ;

ServletContext application;

 

request = ServletActionContext.getRequest();//获取request

session = request.getSession();

application = ServletActionContext.getServletContext();//获取application

 

request.setAttribute("req", "request属性111");

session.setAttribute("ses", "session属性111");

application.setAttribute("app", "application属性111");

    2.2.1 IoC模式

 

Java代码 

//实现接口    

public class LoginAction extends ActionSupport implements ServletRequestAware,ServletContextAware    

 

 

HttpServletRequest request;    

ServletContext application;    

 

 

public void setServletRequest(HttpServletRequest request) {    

    this.request = request;    

}    

public void setServletContext(ServletContext application) {    

    this.application = application;    

}