作者:网络之门
几个要好的网友在聊天室里闲聊的时侯,总会遇上有些话题是不想同一聊天室内别的聊友看见的,那么聊天室支持悄悄话功能将是什分有必要的了,实现悄悄话的方法很多,现在小虎介绍一下利用session对象来实现它,用session对象来实现悄悄话,是有优缺点的,因为session对象的应用,其实就是客户端cookies的使用。如果客户端cookies不支持或关闭了,那么程序运行起来就有问题了。那么使用session对象就没好处了吗??非也,至少在编程上大大减少了工作量嘛,试想一下如果需要保存该用户的聊天名字,那么使用session对象就能直接保存他的名字了,如果没有session对象。解决的方法看来就只有在处理发言的FORM里设几个隐含的textbox对象来保存,这样处理起来会比教烦锁,但好处是通用性广,就算浏览器不支持cookies仍然可用。
说到这里,大伙不妨试试网上众多的ASP聊天室,试把浏览器的安全选项(总是接受cookies关了)看看那个聊天室仍然正常地能使用。那个就问题百出来。。呵呵~~不要找小虎的聊天室来试哦....我的聊天室也需要cookies来支持的。不用session对象编程真是烦锁很多。而且大部分浏览器的安全配置的默认值是总是接受cookies。所以也不用太但心,只有少部分的用户是比教特别的。
现在从聊天室的发言开始,到处理发言,显示发言,一步一步地让大家了解一下是如何处理的,最后就加上悄悄话功能
首先,我们的聊天室主要提供如下元素:发言人(你的名字),动作(叫嚷,抱抱...等),对象(这句话是向谁说的呢?),发言内容等四大元素。
其中发言人(你的聊天名字)的名字是保存在发言FORM的user隐藏文本框中,这样每当发言的时侯,在处理发言的says.asp程序里,就可以用request.form("user")来取得聊天名字。而动作则是由下拉框action来提供的,你可以自定义很多的动作类型,以满足不同聊友的需要。而发言对象,也是由下拉框whoto来选定,这些名单是列出当前聊天室内所有用户的名称。如何判断有新用户进聊天室以及退出处理,这里先不说了。因为构造一个完整的聊天室要做的工作还是挺多的。最后由一个says文本框提供发言内容。
有了这几个主要的聊天元素。我们就可以进行发言处理了。
请看看下面的程序片段
'取得说话内容,并过滤其中的脚本语句
usersays=request.form("says")
if instr(usersays,"
1<script")>0 then
2usersays=""
3end if
4
5'判断是否有谈话内容,没有的话就不作处理
6
7if len(usersays)<>0 then
8session("whoto")=request.form("whoto")
9session("action")=request.form("action")
10if instr(usersays,chr(39))>0 then
11usersays=replace(usersays,chr(39),"\"&chr(39))
12end if
13if instr(usersays,chr(34))>0 then
14usersays=replace(usersays,chr(34),"\"&chr(34))
15end if
16
17application.lock
18
19'定义一个交谈缓冲区,后面将给大家仔细分析一下
20
21dim chats(20)
22for n=1 to 20
23chats(n)=application("chats")(n)
24next
25username=request.Form("user")
26
27
28usertime=Time
29usertime="("&right(usertime,8)&")"
30user_whoto=request.Form("whoto")
31user_action=request.Form("action")
32if application("counter")>19 then
33application("counter")=0
34end if
35'不是耳语就加一
36if request.form("action")<>"耳语" then
37application("counter")=application("zj_1counter")+1
38counter=application("zj_1counter")
39'用户的动作处理
40
41select case request.FORM("action")
42case "说话"
43if request.FORM("whoto")="ALL" then
44chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> :<font color="#0000aa"> "&usersays&"</font><br/><br/>"
45else
46chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>与<font color="#00bb00"> "&request.FORM("whoto")&" </font>说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
47end if
48case "叫嚷"
49chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>冲<font color="#00bb00"> "&request.FORM("whoto")&" </font>大叫</i>:<b><font color="#0000aa"> "&usersays&"</font></b><br/><br/>"
50case "亲亲"
51chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>亲了亲<font color="#00bb00"> "&request.FORM("whoto")&" </font>的脸颊</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
52case "拥抱"
53chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>轻轻的抱着<font color="#00bb00"> "&request.FORM("whoto")&" </font></i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
54case "暴怒"
55chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>朝<font color="#00bb00"> "&request.FORM("whoto")&" </font>横眉竖目道</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
56case "轻推"
57chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>轻轻地推了推<font color="#00bb00"> "&request.FORM("whoto")&" </font>的胳膊</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
58case "傻笑"
59chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>傻兮兮的朝<font color="#00bb00"> "&request.FORM("whoto")&" </font>笑笑</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
60case "拳打"
61chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>对准<font color="#00bb00"> "&request.FORM("whoto")&" </font>就是一拳</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
62case "脚踢"
63chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>凌空一腿踢在<font color="#00bb00"> "&request.FORM("whoto")&" </font>脑袋上</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
64case "告戒"
65chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>拉着<font color="#00bb00"> "&request.FORM("whoto")&" </font>手语气心长地说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
66case "耳光"
67chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>狠狠地掴了<font color="#00bb00"> "&request.FORM("whoto")&" </font>几个耳光</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
68case "鞠躬"
69chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>毕恭毕敬地向<font color="#00bb00"> "&request.FORM("whoto")&" </font>弯腰鞠躬</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
70case "歉意"
71chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>感到十二分的歉意,低声对<font color="#00bb00"> "&request.FORM("whoto")&" </font>说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
72case "惊讶"
73chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>惊讶的对<font color="#00bb00"> "&request.FORM("whoto")&" </font>吐了吐舌头</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
74case "哈欠"
75chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>对<font color="#00bb00"> "&request.FORM("whoto")&" </font>张大嘴巴,打了个哈欠</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
76case "微笑"
77chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>对<font color="#00bb00"> "&request.FORM("whoto")&" </font>微微一笑</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
78case "握手"
79chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>紧紧的握住<font color="#00bb00"> "&request.FORM("whoto")&" </font>的手</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
80case "耸肩"
81chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>对着<font color="#00bb00"> "&request.FORM("whoto")&" </font>耸耸双肩</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
82case "安慰"
83chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>拍拍<font color="#00bb00"> "&request.FORM("whoto")&" </font>的肩膀,双眼关切的说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
84case "生气"
85chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>气鼓鼓的嘟嘴对<font color="#00bb00"> "&request.FORM("whoto")&" </font>道</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
86case "大哭"
87chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>忍不住对着<font color="#00bb00"> "&request.FORM("whoto")&" </font>放声大哭</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
88case "抽泣"
89chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>双手捂着脸,对着<font color="#00bb00"> "&request.FORM("whoto")&" </font>呜呜咽咽的</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
90case "承诺"
91chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>对着<font color="#00bb00"> "&request.FORM("whoto")&" </font>把胸脯拍得噼啪响</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
92case "不舍"
93chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>依依不舍地拉着<font color="#00bb00"> "&request.FORM("whoto")&" </font>的衣角</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
94case "深情"
95chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>用深情的眼神,痴痴地看着<font color="#00bb00"> "&request.FORM("whoto")&" </font></i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
96case "迷惑"
97chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>抓抓头皮看着<font color="#00bb00"> "&request.FORM("whoto")&" </font>露出迷惑的神情</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
98case "不解"
99chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>用不可思意的眼神看着<font color="#00bb00"> "&request.FORM("whoto")&" </font></i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
100case "幸灾"
101chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>幸灾乐祸地对<font color="#00bb00"> "&request.FORM("whoto")&" </font>说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
102case "大笑"
103chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>对着<font color="#00bb00"> "&request.FORM("whoto")&" </font>捧腹大笑</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
104case "皱眉"
105chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>皱着眉头对<font color="#00bb00"> "&request.FORM("whoto")&" </font></i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
106case "委屈"
107chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>很委屈地看着<font color="#00bb00"> "&request.FORM("whoto")&" </font>眼泪哗啦啦地往下流</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
108case "高兴"
109chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>兴高采烈地对<font color="#00bb00"> "&request.FORM("whoto")&" </font>说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
110case "沮丧"
111chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>满脸沮丧地对<font color="#00bb00"> "&request.FORM("whoto")&" </font>说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
112case "失望"
113chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>垂头丧气地对<font color="#00bb00"> "&request.FORM("whoto")&" </font>说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
114case "神经"
115chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>神经兮兮地对<font color="#00bb00"> "&request.FORM("whoto")&" </font>说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
116case "神秘"
117chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>非常神秘地对<font color="#00bb00"> "&request.FORM("whoto")&" </font>说</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
118case "撒娇"
119chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>拉着<font color="#00bb00"> "&request.FORM("whoto")&" </font>手撒娇</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
120case "鬼脸"
121chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>对着<font color="#00bb00"> "&request.FORM("whoto")&" </font>做了个鬼脸</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
122case "无奈"
123chats(counter)="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>对着<font color="#00bb00"> "&request.FORM("whoto")&" </font>很无奈地</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
124end select
125
126'是耳语
127else
128
129'耳语处理
130application("chat")="<font color="blue">"&usertime&"</font> <font color="black">"&username&"</font> <i>悄悄地对<font color="#00bb00"> "&request.FORM("whoto")&" </font>耳语</i>:<font color="#0000aa"> "&usersays&"</font><br/><br/>"
131'对谁说
132application("chatto")=request.FORM("whoto")
133'说话的人
134application("owner")=username
135session("chat")="true"
136end if
137
138
139'谈话全局化
140application("chats")=chats
141
142
143application.unlock
144
145
146end if
147
148上面的程序是把用户的发言和动作以及说话对象生成html语句并保存起来。用以后面的在聊天室中显示出来,其中请大家注意一下耳语是保存在application("chat")这个全局应用程序对象中的。好了,下节先为大家详细分析一下说话的内容是如何处理。</script")>