请教个dwr的问题

Question

怎么从ScriptSession取得当前用户，实现向特定的用户发送脚本？ 下面是我的代码，要怎么改造？
FacesContext facesContext = FacesContext.getCurrentInstance();
ServletContext servletContext = (ServletContext) facesContext.getExternalContext().getContext();
ServerContext sctx = ServerContextFactory.get(servletContext);
Collection sessions = sctx.getAllScriptSessions();
Util pages = new Util(sessions);
pages.addFunctionCall("initD", subject, "im.xhtml?users=" + java.net.URLEncoder.encode(users));

Answer 1

[code="java"]
/**

• 根据用户id获得指定用户的页面脚本session
• @param userid
• @param request
• @return */ @SuppressWarnings("unchecked") public ScriptSession getScriptSession(String userid, HttpServletRequest request) { ScriptSession scriptSessions = null; Collection sessions = new HashSet(); sessions.addAll(ServerContextFactory.get(request.getSession().getServletContext()).getScriptSessionsByPage("/chat/index.jsp")); for (ScriptSession session : sessions) { String xuserid = (String) session.getAttribute("userid"); if (xuserid != null && xuserid.equals(userid)) { scriptSessions = session; } } return scriptSessions; } [/code]