问题是这样的
我首先打开 2个网页http://localhost/chat/test.jsp
然后再其中一个输入1在这个网页显示啦，另一个没有显示，
然后我在第二个网页输入2，然后显示 1 2
也就是把第一次的也显示啦，为甚麽我第一次的时候没有同步呢？
test.jsp
- HTML code
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><script type='text/javascript' src='<%=request.getContextPath()%>/dwr/interface/Chat.js'></script> <script type='text/javascript' src='<%=request.getContextPath()%>/dwr/engine.js'></script> <script type='text/javascript' src='<%=request.getContextPath()%>/dwr/util.js'></script> <script type='text/javascript' src='js/chat.js'></script><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>chat</title></head><body onload="init()"> <textarea readonly="readonly" rows="20" cols="30" id="content"> </textarea> <input type="text" id="input" /> <button onclick="send()">发送</button></body></html>
chat.js
- JScript code
/** * *///测试是否全为空格init=function(){ dwr.engine.setActiveReverseAjax =true;};isEmpty=function(string){ return string==""||string.match(/[^\s]/)==null;};send=function(){ var input=dwr.util.getValue("input"); if(!isEmpty(input)){ Chat.send(input); }};update=function(messageInformation){ // var last=dwr.util.getValue("content");// dwr.util.setValue("content",last+"\n"+sendMessage); alert(messageInformation.message); var last=document.getElementById("content").innerHTML; if(last!=null){ last+="\n"; } var totalMessage=messageInformation.ip+":"+messageInformation.message+"\n"+" "+messageInformation.date; document.getElementById("content").innerHTML=last+totalMessage;};Chat。java
- Java code
package mychat;import java.text.SimpleDateFormat;import java.util.Date;import org.directwebremoting.*;import org.directwebremoting.annotations.RemoteMethod;import org.directwebremoting.annotations.RemoteProxy;import org.directwebremoting.annotations.ScriptScope;@RemoteProxy(scope=ScriptScope.APPLICATION)public class Chat { public Chat() { super(); // TODO Auto-generated constructor stub// Util.execute(this); } @RemoteMethod public void send(final String sendMessage) { // TODO Auto-generated method stub String ip=WebContextFactory.get().getHttpServletRequest().getLocalAddr(); final MessageInformation mi=new MessageInformation(ip,sendMessage,new SimpleDateFormat("h:mm a").format(new Date()).toString()); Browser.withCurrentPage((new Runnable() { public void run() { System.out.println(mi); ScriptSessions.addFunctionCall("update", mi); } })); } }------解决方案--------------------