经过函数escape（javascript）编码的数据，传递到jsp页面后应该如何接收？
客户端给出部分代码：
var xmlhttprequest=getXMLHttpRequest();
if(xmlhttprequest)
{
xmlhttprequest.open( "POST ", "xtgzpt_lzkz_gdgl_get_zuidajianhao.jsp ",true);
xmlhttprequest.onreadystatechange = gotresult;
xmlhttprequest.setRequestHeader( 'Content-Type ', 'application/x-www-form-urlencoded;charset=utf-8 ');
param= " ";
param=param+ "gdnd= "+form1.gdnd.value;
param=param+ "&jg= "+form1.jg.value;
param=param+ "&bcqy= "+escape(form1.bcqy.value);
alert(param);
xmlhttprequest.send(param);
}
服务器端用一下这句代码接收：
String t_bcqy=unescape(request.getParameter( "bcqy "));
至此，程序一点都不报错，但是就是这句话过不去，请各位指教。。。
unescape函数的定义如下：
<%!
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 "
};
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
};
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 (ch == ' ') { // space : map to '+ '
sbuf.append( '+ ');
} else if ( 'A ' <= ch && ch <= 'Z ') { // 'A '.. 'Z ' : as it was
sbuf.append((char)ch);
} else if ( 'a ' <= ch && ch <= 'z ') { // 'a '.. 'z ' : as it was
sbuf.append((char)ch);
} else if ( '0 ' <= ch && ch <= '9 ') { // '0 '.. '9 ' : as it was
sbuf.append((char)ch);
} else if (ch == '- ' || ch == '_ ' // unreserved : as it was
|| ch == '. ' || ch == '! '
|| ch == '~ ' || ch == '* '
|| ch == '\ ' ' || ch == '( '
|| ch == ') ') {
sbuf.append((char)ch);
} else if (ch <= 0x007F) { // other ASCII : map to %XX
sbuf.append( '% ');
sbuf.append(hex[ch]);
} else { // unicode : map to %uXXXX
sbuf.append( '% ');
sbuf.append( 'u ');
sbuf.append(hex[(ch > > > 8)]);
sbuf.append(hex[(0x00FF & ch)]);
}
}
return sbuf.toString();
}
%>
<%!
String unescape(String s) {
StringBuffer sbuf = new StringBuffer();
int i = 0;
int len = s.length();
while (i < len) {
int ch = s.charAt(i);
if (ch == '+ ') { // + : map to ' '
sbuf.append( ' ');
} else if ( 'A ' <= ch && ch <= 'Z ') { // 'A '.. 'Z ' : as it was
sbuf.append((char)ch);
} else if ( 'a ' <= ch && ch <= 'z ') { // 'a '.. 'z ' : as it was
sbuf.append((char)ch);
} else if ( '0 ' <= ch && ch <= '9 ') { // '0 '.. '9 ' : as it was
sbuf.append((char)ch);
} else if (ch == '- ' || ch == '_ ' // unreserved : as it was
|| ch == '. ' || ch == '! '
|| ch == '~ ' || ch == '* '
|| ch == '\ ' ' || ch == '( '
|| ch == ') ') {
sbuf.append((char)ch);
} else if (ch == '% ') {
int cint = 0;
if ( 'u ' != s.charAt(i+1)) { // %XX : map to ascii(XX)
cint = (cint < < 4) | val[s.charAt(i+1)];
cint = (cint < < 4) | val[s.charAt(i+2)];
i+=2;
} else { // %uXXXX : map to unicode(XXXX)
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);
}
i++;
}
return sbuf.toString();
}
%>
[解决办法]
至此，程序一点都不报错，但是就是这句话过不去，请各位指教。。。
这句话是什么意思？说清楚，“过不去”是什么意思？总归有个现象吧
