Go语言视频零基础入门到精通

kevin_7032

1.取得Map类型request,session,application
   /**
   *依赖于struts2容器
   */
public class LoginAction  extends ActionSupport{
private Map request;
private Map session;
private Map application;

public LoginAction() {
  request=(Map)ActionContext.getContext().get("request");
  session=ActionContext.getContext().getSession();
  application=ActionContext.getContext().getApplication();
}
@Override
public String execute() throws Exception {
  return SUCCESS;
}
}

2.IoC（控制反转） 常用
   实现RequestAware,SessionAware,ApplicationAware接口

public class LoginAction 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{
  return SUCCESS;
}

public void setRequest(Map<String, Object> request) {
  this.request = request;
}

public void setSession(Map<String, Object> session) {
  this.session = session;
}

public void setApplication(Map<String, Object> application) {
  this.application = application;
}
}

3.真实类型 HttpServletRequest, HttpSession, ServletContext的引用
  (1)
public class LoginAction extends ActionSupport{ private HttpServletRequest request;
private HttpSession session;
private ServletContext application;

public LoginAction() {
  request=ServletActionContext.getRequest();
  session=request.getSession();
  application=session.getServletContext();
}

@Override
public String execute() throws Exception {
  return SUCCESS;
}
}

(2)IoC   (实现ServletRequestAware接口)

public class LoginAction4 extends ActionSupport implements ServletRequestAware{

private HttpServletRequest request;
private HttpSession session;
private ServletContext application;

@Override
public String execute() throws Exception {
  return SUCCESS;
}
public void setServletRequest(HttpServletRequest request) {
  this.request=request;
  session=request.getSession();
  application=session.getServletContext();
}

}