js编码转换gb2312和utf8互转的2种⽅法
⽅法⼀:
复制代码代码如下:
function gb2utf8(data){
var glbEncode = [];
gb2utf8_data = data;
execScript("gb2utf8_data = MidB(gb2utf8_data, 1)", "VBScript");
var t=escape(gb2utf8_data).replace(/%u/g,"").replace(/(.{2})(.{2})/g,"%$2%$1").replace(/%([A-Z].)%(.{2})/g,"@$1$2");      t=t.split("@");
var i=0,j=t.length,k;
while(++i<j) {
k=t[i].substring(0,4);
if(!glbEncode[k])
{
gb2utf8_char = eval("0x"+k);
execScript("gb2utf8_char = Chr(gb2utf8_char)", "VBScript");
glbEncode[k]=escape(gb2utf8_char).substring(1,6);
}
t[i]=glbEncode[k]+t[i].substring(4);
}
gb2utf8_data = gb2utf8_char = null;
return unescape(t.join("%"));
}
使⽤时:xxx.innerHTML=sponseBody);
⽅法⼆:
复制代码代码如下:
<script language="JavaScript">
<!--
代码转换function utf8(wide) {
var c, s;
var enc = "";
var i = 0;
while(i<wide.length) {
c= wide.charCodeAt(i++);
/
/ handle UTF-16 surrogates
if (c>=0xDC00 && c<0xE000) continue;
if (c>=0xD800 && c<0xDC00) {
if (i>=wide.length) continue;
s= wide.charCodeAt(i++);
if (s<0xDC00 || c>=0xDE00) continue;
c= ((c-0xD800)<<10)+(s-0xDC00)+0x10000;
}
// output value
if (c<0x80) enc += String.fromCharCode(c);
else if (c<0x800) enc += String.fromCharCode(0xC0+(c>>6),0x80+(c&0x3F));
else if (c<0x10000) enc += String.fromCharCode(0xE0+(c>>12),0x80+(c>>6&0x3F),0x80+(c&0x3F));
else enc += String.fromCharCode(0xF0+(c>>18),0x80+(c>>12&0x3F),0x80+(c>>6&0x3F),0x80+(c&0x3F));
}
return enc;
}
var hexchars = "0123456789ABCDEF";
function toHex(n) {
return hexchars.charAt(n>>4)+hexchars.charAt(n & 0xF);
}
var okURIchars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789
_-";
function encodeURIComponentNew(s) {
var s = utf8(s);
var c;
var enc = "";
for (var i= 0; i<s.length; i++) {
if (okURIchars.indexOf(s.charAt(i))==-1)
enc += "%"+toHex(s.charCodeAt(i));
else
enc += s.charAt(i);
}
return enc;
}
alert(encodeURIComponentNew("中⽂"))
alert(decodeURIComponent(encodeURIComponentNew("中⽂")))
// -->
</script>
在java类中配合使⽤: (适⽤于ajax)
复制代码代码如下:
String dwp = new Parameter("dwp").getBytes("ISO-8859-1"),"gbk") ; String dwc = new Parameter("dwc").getBytes("ISO-8859-1"),"gbk") ;

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