關於url中文亂碼的高手之見---不是我

首先這段不是轉載。說一下我的環境
jsp utf-8.用url傳中文。
中間用了不少所謂的gb2312啊之類的網上的說法。但是與總環境不符合。所以力求getBytes這樣的方法。但是一個"本"字難住了我。如果本在後面就會轉成兩個？？並且&也沒了
雖然下面高手的方法解決了我的問題，但是我還是要說。用jsp儘量設計的不要傳中文參數。個人之見


轉自http://dangfang800.blog.163.com/blog/static/322435252008112843156884/
心靜如水的博客，大家有空可以去看看。寫了很多有用的方法

1、在JSP頁面中的javascript中寫法如下：

function sendRequest(name)
{
   var url = "${pageContext.request.contextPath}/Cdelete?name="+escape(escape(name));
   xmlHttpRequest = createXmlHttpRequest();
   xmlHttpRequest.onreadystatechange = delete;
   xmlHttpRequest.open("POST",url,true);
   xmlHttpRequest.send(null);
 } 

2、在Servlet中轉碼如下：

String name=JSescape.unescape(JSescape.unescape(request.getParameter("name")));



public class JSescape {

    private final static String[] hex = { "00", "01", "02", "03", "04", "05",    
     "06", "07", "08", "09", "0A", "0B", "0C", "0D", "0E", "0F", "10",    
     "11", "12", "13", "14", "15", "16", "17", "18", "19", "1A", "1B",    
     "1C", "1D", "1E", "1F", "20", "21", "22", "23", "24", "25", "26",    
     "27", "28", "29", "2A", "2B", "2C", "2D", "2E", "2F", "30", "31",    
     "32", "33", "34", "35", "36", "37", "38", "39", "3A", "3B", "3C",    
     "3D", "3E", "3F", "40", "41", "42", "43", "44", "45", "46", "47",    
     "48", "49", "4A", "4B", "4C", "4D", "4E", "4F", "50", "51", "52",    
     "53", "54", "55", "56", "57", "58", "59", "5A", "5B", "5C", "5D",    
     "5E", "5F", "60", "61", "62", "63", "64", "65", "66", "67", "68",    
     "69", "6A", "6B", "6C", "6D", "6E", "6F", "70", "71", "72", "73",    
     "74", "75", "76", "77", "78", "79", "7A", "7B", "7C", "7D", "7E",    
     "7F", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89",    
     "8A", "8B", "8C", "8D", "8E", "8F", "90", "91", "92", "93", "94",    
     "95", "96", "97", "98", "99", "9A", "9B", "9C", "9D", "9E", "9F",    
     "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "AA",    
     "AB", "AC", "AD", "AE", "AF", "B0", "B1", "B2", "B3", "B4", "B5",    
     "B6", "B7", "B8", "B9", "BA", "BB", "BC", "BD", "BE", "BF", "C0",    
     "C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CA", "CB",    
     "CC", "CD", "CE", "CF", "D0", "D1", "D2", "D3", "D4", "D5", "D6",    
     "D7", "D8", "D9", "DA", "DB", "DC", "DD", "DE", "DF", "E0", "E1",    
     "E2", "E3", "E4", "E5", "E6", "E7", "E8", "E9", "EA", "EB", "EC",    
     "ED", "EE", "EF", "F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7",    
     "F8", "F9", "FA", "FB", "FC", "FD", "FE", "FF" };    

     private final static byte[] val = { 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x00, 0x01,    
     0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,    
     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F };    

     /** *//**   
      * 編碼 
      *    
      * @param s   
      * @return   
      */   
     public static String escape(String s) {    
     StringBuffer sbuf = new StringBuffer();    
     int len = s.length();    
     for (int i = 0; i < len; i++) {    
     int ch = s.charAt(i);    
     if ('A' <= ch && ch <= 'Z') {    
     sbuf.append((char) ch);    
     } else if ('a' <= ch && ch <= 'z') {    
     sbuf.append((char) ch);    
     } else if ('0' <= ch && ch <= '9') {           
     sbuf.append((char) ch);    
     } else if (ch == '-' || ch == '_'     
     || ch == '.' || ch == '!' || ch == '~' || ch == '*'    
     || ch == '\'' || ch == '(' || ch == ')') {    
     sbuf.append((char) ch);    
     } else if (ch <= 0x007F) {    
     sbuf.append('%');    
     sbuf.append(hex[ch]);    
     } else {    
     sbuf.append('%');    
     sbuf.append('u');    
     sbuf.append(hex[(ch >>> 8)]);    
     sbuf.append(hex[(0x00FF & ch)]);    
     }    
     }    
     return sbuf.toString();    
     }    

     /** *//**   
      * 解碼 說明：本方法保證 不論參數s是否經過escape()編碼，均能得到正確的“解碼”結果 
      *    
      * @param s   
      * @return   
      */   
     public static String unescape(String s) {    
     StringBuffer sbuf = new StringBuffer();    
     int i = 0;    
     int len = s.length();    
     while (i < len) {    
     int ch = s.charAt(i);    
     if ('A' <= ch && ch <= 'Z') {    
     sbuf.append((char) ch);    
     } else if ('a' <= ch && ch <= 'z') {     
     sbuf.append((char) ch);    
     } else if ('0' <= ch && ch <= '9') { 
     sbuf.append((char) ch);    
     } else if (ch == '-' || ch == '_'|| ch == '.' || ch == '!' || ch == '~' || ch == '*'|| ch == '\'' || ch == '(' || ch == ')') {    
     sbuf.append((char) ch);    
     } else if (ch == '%') {    
     int cint = 0;    
     if ('u' != s.charAt(i + 1)) {    
     cint = (cint << 4) | val[s.charAt(i + 1)];    
     cint = (cint << 4) | val[s.charAt(i + 2)];    
     i += 2;    
     } else {    
     cint = (cint << 4) | val[s.charAt(i + 2)];    
     cint = (cint << 4) | val[s.charAt(i + 3)];    
     cint = (cint << 4) | val[s.charAt(i + 4)];    
     cint = (cint << 4) | val[s.charAt(i + 5)];    
     i += 5;    
     }    
     sbuf.append((char) cint);    
     } else {    
     sbuf.append((char) ch);    
     }    
     i++;    
     }    
     return sbuf.toString();    
     }    
}