用XMLHTTP Post Form时的表单乱码有两方面的原因——Post表单数据时中文乱码;服务器Response被XMLHTTP不正确编码引起的乱码。换句话说,本文主要解决两个问题——怎样正确Post中文内容&怎样正确显示得到的中文内容。 Part I Post中文内容 先看看E文的表单是怎么提交的: <SCRIPT language="JavaScript"> strA = "submit1=Submit&text1=scsdfsd"; var oReq = new ActiveXObject("MSXML2.XMLHTTP"); oReq.open("POST","http://ServerName/VDir/TstResult.asp",false); oReq.setRequestHeader("Content-Length",strA.length); oReq.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencoded"); oReq.send(strA); </SCRIPT> 如果把strA = "submit1=Submit&text1=scsdfsd";换成:strA = "submit1=Submit&text1=中文"; 你会发现提交上去的东东根本不对,ASP中Request.Form("Text1")根本取不到值。俺用Request.BinaryRead把一个HTML Form中的Post内容写出来看了看,才发现问题——Form提交时也要编码的,编码后的中文是类似于%??%??的转义字符,比如“中文”就被编码为:%D6%D0%CE%C4。呵呵,也怪俺笨,人家CONTENT-TYPE里明明写的清清楚楚——application/x-www-form-urlencoded,urlencoded嘛当然就是这个样子了。既然这样,那我们也知道该怎么办了——自己做转换,代码见下: Function URLEncoding(vstrIn) strReturn = "" For i = 1 To Len(vstrIn) ThisChr = Mid(vStrIn,i,1) If Abs(Asc(ThisChr)) < &HFF Then strReturn = strReturn & ThisChr Else innerCode = Asc(ThisChr) If innerCode < 0 Then innerCode = innerCode + &H10000 End If Hight8 = (innerCode And &HFF00)\ &HFF Low8 = innerCode And &HFF strReturn = strReturn & "%" & Hex(Hight8) & "%" & Hex(Low8) End If Next URLEncoding = strReturn End Function strA = URLEncoding("submit1=Submit&text1=中文") oReq = CreateObject("MSXML2.XMLHTTP") oReq.open "POST","http://ServerName/VDir/TstResult.asp",false oReq.setRequestHeader "Content-Length",Len(strA) oReq.setRequestHeader "CONTENT-TYPE","application/x-www-form-urlencoded" oReq.send strA </ScRIPT> (在这里俺把前面的JavaScript的代码改成了VBScript,不是吃饱了撑的没事干,原因见后) Part II.正确显示得到的中文内容 OK,如果你在Server端把Form的内容写到数据库/文件的话,你在那里看到的中文毫无问题,但是,假如你想看看Server的Response——问题来了:如果Response的结果不是XML,XMLHTTP.responseXML里当然是不会有东东的,那就用responseText好了,在代码的最后加一句:alert(oReq.responseText) 。看看俺们辛勤劳动的结果。 但是但是.....怎么所有的中文全变成了方格? (我打不出来,有兴趣自己去试,也不用Post,Get一个含有中文的网页就可以发现了。) 原因很简单:XMLHTTP得到Response时假定Response是UTF8编码的,如果Response是XML,那还可以通过encoding来指定编码,但HTML就不行了。(见鬼的GB2312,再次打倒!)所以它把含GB2312编码的HTML当成UTF8格式,不出错才有鬼! 不过好在还有补救的办法:XMLHTTP的responseBody 属性里包含的可是未解码的Resonse——"a raw undecoded bytes as received directly from the server" :),唯一的问题是,responseBody返回的是一个unsigned bytes数组,我们怎么去访问它,怎么把它转换成BSTR? 这就是为什么我在上面把代码改成VBScript的原因——VBScript Can do it,but JavaScript Cannot! 代码见下: <SCRIPT language="VBScript"> Function URLEncoding(vstrIn) strReturn = "" For i = 1 To Len(vstrIn) ThisChr = Mid(vStrIn,i,1) If Abs(Asc(ThisChr)) < &HFF Then strReturn = strReturn & ThisChr Else innerCode = Asc(ThisChr) If innerCode < 0 Then innerCode = innerCode + &H10000 End If Hight8 = (innerCode And &HFF00)\ &HFF Low8 = innerCode And &HFF strReturn = strReturn & "%" & Hex(Hight8) & "%" & Hex(Low8) End If Next URLEncoding = strReturn End Function Function bytes2BSTR(vIn) strReturn = "" For i = 1 To LenB(vIn) ThisCharCode = AscB(MidB(vIn,i,1)) If ThisCharCode < &H80 Then strReturn = strReturn & Chr(ThisCharCode) Else NextCharCode = AscB(MidB(vIn,i+1,1)) strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode)) i = i + 1 End If Next bytes2BSTR = strReturn End Function strA = URLEncoding("submit1=Submit&text1=中文") oReq = CreateObject("MSXML2.XMLHTTP") oReq.open "POST","http://ServerName/VDir/TstResult.asp",false oReq.setRequestHeader "Content-Length",Len(strA) oReq.setRequestHeader "CONTENT-TYPE","application/x-www-form-urlencoded" oReq.send strA alert bytes2BSTR(oReq.responseBody) </SSRIPT> (责任编辑:admin) |