vbscript/javascript结合搞定ajax中文乱码问题。

XMLHTTPREQUEST的数据传输采用utf8编码（老外搞的东西，对中文支持就是差）。如果我们ajax访问的服务器也是自己编写，那么我们可以把服务器设置为utf8那么问题不大，但如果服务器是别人写好的，采用的是gb2312怎么办呢？我找了半天，结合javascript和vbscript终于搞定了。

vbscript代码如下：

<BR>'#####################################<BR>'Function：将UTF8码转换为gb2312码</SPAN></SPAN></LI>
<LI><SPAN style="COLOR: #000000"><SPAN style="COLOR: #0000cc">'Input：要转为gb2312的字符串（utf8）</SPAN></SPAN></LI>
<LI><SPAN style="COLOR: #000000"><SPAN style="COLOR: #0000cc">'Output：GB2312码<BR>'###################################<BR>Function convertstr(vIn) <BR>&nbsp;strReturn = "" <BR>&nbsp;For i = 1 To LenB(vIn) <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ThisCharCode = AscB(MidB(vIn,i,1)) <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; If ThisCharCode < &H80 Then <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; strReturn = strReturn & Chr(ThisCharCode) <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Else <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; NextCharCode = AscB(MidB(vIn,i+1,1)) <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode)) <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; i = i + 1 <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; End If <BR>&nbsp;Next <BR>&nbsp;convertstr = strReturn <BR>End Function</SPAN></SPAN></LI>
<LI><SPAN style="COLOR: #000000"><SPAN style="COLOR: #0000cc">

javascript发送ajax请求

 

<script type="text/javascript">
var http_request = false;
/**
 * 功能：查询辽宁软考的准考证信息
 * 参数：输入准考证号
 * 返回：准考证信息页面
 */
function send_request() { //初始化、指定处理函数、发送请求的函数

    var url=""; //要调用的连接

    if (window.XMLHttpRequest) { //Mozilla 浏览器

            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) { //设置MiME类别

                    http_request.overrideMimeType("text/html"); //设定以gb2312编码识别数据

            }
    } else if (window.ActiveXObject) { // IE浏览器

            try {
                    http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch(e) {
                    try {
                            http_request = new ActiveXObject("Microsoft.XMLHTTP");
                    } catch(e) {}
            }
    }
    if (!http_request) { // 异常，创建对象实例失败

            window.alert("不能创建XMLHttpRequest对象实例.");
            return false;
    }
    http_request.onreadystatechange = function() {
            if (http_request.readyState == 4) { // 判断对象状态

                    if (http_request.status == 200) { // 信息已经成功返回，开始处理信息

                            gb2utf8_data = http_request.responseBody;
                            execScript("gb2utf8_data = convertstr(gb2utf8_data)", "VBScript"); //javascript调用vbscript代码的方法
                            var resText = gb2utf8_data; //中文信息

                            var namepos = resText.indexOf('姓名');
                            var zkzhpos = resText.indexOf("准考证号");
                            var name = "姓名：" + resText.substr(namepos + 36,3)
                            name=name.replace("<","");
                            var zkzh = "准考证号：" + resText.substr(zkzhpos + 38,12);
                            if (document.getElementById("result").innerHTML == "") {
                                document.getElementById("result").innerHTML = name + "，" + zkzh;
                            }else{
                                document.getElementById("result").innerHTML = document.getElementById("result").innerHTML +
                                             "" + name + "，" + zkzh;
                            }
                            //document.getElementById("result").innerHTML =gb2utf8_data;

                            //alert(bytes2BSTR(http_request.responseBody));

                    } else { //页面不正常

                            document.getElementById("result").innerHTML = "发生错误！访问超时！"
                    }
            }
    }
    http_request.open("POST", url, true);
    http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); //这句话必须加，否则数据过不去
    http_request.send("name=value"); //post表单数据
}
</script>

通过上面的设置基本可以搞定ajax的gb2312中文乱码了。