弹出系统提示

public String noticemessage(){
		ChatManager.noticeRebackMessage(this.getRequest(), noticemessage);
		return "this";//本页面
	}

package com.web.utils;

import java.util.Collection;
import java.util.List;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import org.directwebremoting.ScriptBuffer;
import org.directwebremoting.ScriptSession;
import org.directwebremoting.ServerContext;
import org.directwebremoting.ServerContextFactory;
import org.directwebremoting.WebContext;
import org.directwebremoting.WebContextFactory;

public class ChatManager {
	public static void noticeOrderMessage(HttpServletRequest request, String message, String pps) {
		WebContext wctx = WebContextFactory.get();
		ScriptBuffer script = new ScriptBuffer();
		script.appendScript("receiveMessages(").appendData(message).appendScript(",").appendData(pps).appendScript(");");
        //获得DWR上下文
		ServletContext sc = request.getSession().getServletContext();
		ServerContext sctx = ServerContextFactory.get(sc);
		//获得当前浏览 index.jsp 页面的所有脚本session
		Collection<ScriptSession> pages = sctx.getScriptSessionsByPage(request.getContextPath()+"/top.jsp");
		for (ScriptSession session : pages) {
			session.addScript(script);
		}
	}
	
	public static void noticeRebackMessage(HttpServletRequest request, String message) {
		WebContext wctx = WebContextFactory.get();
		ScriptBuffer script = new ScriptBuffer();
		script.appendScript("rebackMessages(").appendData(message).appendScript(");");
//		script.appendScript("rebackMessages(www);");
        //获得DWR上下文
		ServletContext sc = request.getSession().getServletContext();
		ServerContext sctx = ServerContextFactory.get(sc);
		//获得当前浏览 index.jsp 页面的所有脚本session
		Collection<ScriptSession> pages = sctx.getScriptSessionsByPage(request.getContextPath()+"/top.jsp");
		for (ScriptSession session : pages) {
			session.addScript(script);
		}
	}
	
	public static boolean isshow(String userpps,String pps){
		List<String> list=Tools.getListString(userpps);
		if(StringUtils.isNotEmpty(pps)){
			for(String pp:list){
				if(pps.contains(pp))
					return true;
			}
		}
		return  false;
	}
}