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("%"));  }  

<script language="JavaScript">  <!--  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>  

String dwp = new String(request.getParameter("dwp").getBytes("ISO-8859-1"),"gbk") ; String dwc = new String(request.getParameter("dwc").getBytes("ISO-8859-1"),"gbk") ;