ajax jsp 聊天室

chatStart = 0.5
}else{
chatStart -= 1
getName("content").value = chats[chatStart]
}
}
getId("loadifo").innerHTML = chatStart "," chats.length
}
function nextChat(){
if(chatStart && chatStart < chats.length && chats.length > 1){
if(chatStart == 0.5){
chatStart = 1
}else if(chatStart == chats.length - 1){
chatStart = chats.length - 1
}else{
chatStart = 1
}
getName("content").value = chats[chatStart]
}
getId("loadifo").innerHTML = chatStart "," chats.length
}
window.onload = function(){
getId("outs").onmousedown = function(){
overs = 1
}
getId("outs").onmouseout = function(){
overs = 0
focs()
}
getName("content").onkeydown = function(e){
if(document.all){
var Keys = event.keyCode;
}else{
var Keys = e.which;
}
//alert(Keys)
if(Keys == "38"){
preChat()
}else if(Keys == "40"){
nextChat()
}else if(event.ctrlKey && Keys == "13"){
doUsingPost()
}else if(event.ctrlKey && Keys == "46"){

字串8

clean()
}
}

}
function getId(objId){
return document.getElementById(objId)
}
function getName(objName){
return document.getElementsByName(objName)[0]
}

chat.js
var overs;
var clien = 0;
function doUsingGet(){
var ajax=new sack("chat.jsp");
ajax.setVar("clien",clien);
ajax.setVar("timeStamp",new Date().getTime());
ajax.method='GET';
ajax.onLoading=function(){
document.getElementById("zt").innerHTML="读取中......";
}
ajax.onCompletion=function(){// 信息返回之后执行的方法
CheckState(ajax.responseXML.documentElement);
}
ajax.onLoaded=function(){
document.getElementById("zt").innerHTML="已经读取......";
}
ajax.onInteractive=function(){
document.getElementById("zt").innerHTML="交互中......";
}
ajax.complete = function(){
document.getElementById("zt").innerHTML="处理完毕......";
}
ajax.runAJAX();
}
function doUsingPost(){
if(getName("content").value!=""){
var named = getName("named").value;
var content = getName("content").value;
var ajax=new sack("chat.jsp");
ajax.setVar("clien",clien);
ajax.setVar("content",content);
ajax.setVar("named",named);
ajax.setVar("timeStamp",new Date().getTime());
ajax.method='POST';
ajax.onLoading=function(){
document.getElementById("zt").innerHTML="读取中......";
}
ajax.onCompletion=function(){// 信息返回之后执行的方法
CheckState(ajax.responseXML.documentElement);
}
ajax.onLoaded=function(){
document.getElementById("zt").innerHTML="已经读取......";
}
ajax.onInteractive=function(){
document.getElementById("zt").innerHTML="交互中......";
}
ajax.complete = function(){
document.getElementById("zt").innerHTML="处理完毕......";
}
ajax.runAJAX();
focs();
clean();
}else{
alert("请输入对话内容！")
focs()
}
}


function CheckState(res){
var resLen = res.getElementsByTagName("items").length
if(getTag(res,0,"num") != clien){
clien = getTag(res,0,"num")
for(var i=0; i<resLen; i ){
var useName = getTag(res,i,"name") 字串1
var useMag = getTag(res,i,"conts")
var useIp = getTag(res,i,"ip")
if(clien != "0" && useMag != ""){
if(useName != ""){
var lis = "用户" useName "说：" useMag // " [" useIp "]"
}else{
var lis = "用户 [" useIp "] 说：" useMag
}
}else{
var lis = ""
}
getId("chatmain").innerHTML = lis "<br />"
}
innerSize()
}
}

function innerSize(){
if(overs != 1){
if(getId("chatmain").offsetHeight < getId("outmain").offsetHeight){
getId("chatmain").style.marginTop = getId("outmain").offsetHeight - getId("chatmain").offsetHeight "px";
}else{
getId("chatmain").scrollIntoView(false)
}
}
}
function getTag(response,i,objTagName){
try{
var nodeV = response.getElementsByTagName(objTagName)[i].firstChild.nodeValue;
}catch(e){
var nodeV = ""
}
return nodeV;
}
setInterval("doUsingGet()",1000)

chat.jsp
<%@ page contentType="text/xml; charset=gb2312" %> 字串4
<%!
String func(String content){
return content.replaceAll("<","＜").replaceAll(">","＞");
}
%>
<%
String ip=request.getRemoteAddr(); //客户端IP
int clien = new Integer(request.getParameter("clien")).intValue(); //当前是第几个用户 如果为0就是新来的用户
if(application.getAttribute("counts")==null){
application.setAttribute("counts",new Integer(0));
}
int counts = new Integer(application.getAttribute("counts").toString()).intValue(); //当前用户的ID
if(request.getParameter("content")!=null){
synchronized(this){
if(counts < 21){
int i = counts 1;
application.setAttribute("counts",new Integer(i));
}else if(counts >= 21){
application.setAttribute("counts","1");
}
counts = new Integer(application.getAttribute("counts").toString()).intValue(); //当前用户的ID
int Cnum = counts;
String names;
String Msgs = request.getParameter("content");