学步园

 Struts2.Method

public String stat(){
    	// 固定的二句
    	ActionContext ctx = ActionContext.getContext();
    	HttpServletRequest request = (HttpServletRequest) ctx
    				.get(ServletActionContext.HTTP_REQUEST);
         List<News> weekList=new ArrayList<News>();//周
    	List<News> monthList=new ArrayList<News>();//月
    	List<News> quarterList=new ArrayList<News>();//季度    	    	
    	request.setAttribute("week", weekList.size());         
         request.setAttribute("month", monthList.size());            
         request.setAttribute("quarter", quarterList.size());    	
         return "stat";
    }

Jsp.jsp

<%@ page contentType="text/html" pageEncoding="UTF-8"%>
<%
  StringBuffer content = new StringBuffer(""); 
  content.append("<?xml version=\"1.0\"   encoding=\"UTF-8\" ?>");
  content.append("<roots>");
  content.append("<Week>");
  content.append(request.getAttribute("week"));
  content.append("</Week>");
  content.append("<Month>");
  content.append(request.getAttribute("month"));
  content.append("</Month>");
  content.append("<Quarter>");
  content.append(request.getAttribute("quarter"));
  content.append("</Quarter>");
  content.append("</roots>");
  response.setCharacterEncoding("UTF-8");
  out.print(content);
%>

最终显示.xml

<?xml version="1.0" encoding="UTF-8" ?> 
  <roots>
     <Week>47</Week> 
     <Month>22</Month> 
     <Quarter>22</Quarter> 
  </roots>