jsp通过href跳转到servlet的乱码问题

简单的问题，可是通过正常的办法没有解决，很纠结。所谓正常的办法就是写一些汉字编码转换，或者过滤器等。

 

1、页面转化

 

<mce:script type="text/javascript"><!--function encodeUtf8(s1){ var s = escape(s1); var sa = s.split("%"); var retV =""; if(sa[0] != "") { retV = sa[0]; } for(var i = 1; i < sa.length; i ++) { if(sa[i].substring(0,1) == "u") { retV += Hex2Utf8(Str2Hex(sa[i].substring(1,5))); } else retV += "%" + sa[i]; } return retV;}function Str2Hex(s){ var c = ""; var n; var ss = "0123456789ABCDEF"; var digS = ""; for(var i = 0; i < s.length; i ++) { c = s.charAt(i); n = ss.indexOf(c); digS += Dec2Dig(eval(n)); } //return value; return digS;}function Dec2Dig(n1){ var s = ""; var n2 = 0; for(var i = 0; i < 4; i++) { n2 = Math.pow(2,3 - i); if(n1 >= n2) { s += '1'; n1 = n1 - n2; } else s += '0'; } return s; }function Dig2Dec(s){ var retV = 0; if(s.length == 4) { for(var i = 0; i < 4; i ++) { retV += eval(s.charAt(i)) * Math.pow(2, 3 - i); } return retV; } return -1;}function Hex2Utf8(s){ var retS = ""; var tempS = ""; var ss = ""; if(s.length == 16) { tempS = "1110" + s.substring(0, 4); tempS += "10" + s.substring(4, 10); tempS += "10" + s.substring(10,16); var sss = "0123456789ABCDEF"; for(var i = 0; i < 3; i ++) { retS += "%"; ss = tempS.substring(i * 8, (eval(i)+1)*8); retS += sss.charAt(Dig2Dec(ss.substring(0,4))); retS += sss.charAt(Dig2Dec(ss.substring(4,8))); } return retS; } return "";} function exportExcel(){var obj=document.getElementById("form1:systemId"); var systemId=obj[obj.selectedIndex].innerText;//这里就是取值 systemId = encodeUtf8(encodeUtf8(systemId));location.href="../SystemDayTableServlet?systemId="+systemId;}// --></mce:script>

 

 

 

 

 

 

页面进行了两次编码转化

 

systemId = encodeUtf8(encodeUtf8(systemId));

 

后台servlet解析：

 

String systemId = URLDecoder.decode(request.getParameter("systemId"),"UTF-8");