Address bar pass Chinese parameter garbled in JS with escape transcoding _javascript tips

Source: Internet
Author: User
Tags stringbuffer
Garbled, garbled, head big, annoying, say set Tomcat can be resolved, but sometimes regardless of the use, at this time, we can consider the way of transcoding not directly to the Chinese, in JS with escape transcoding, remember the need to use two times, such as:

var Str=escape ("This is Chinese parameter");

Str=escape (str);

XXX.DO?NAME=STR;

In the background through a class of methods to turn back again:

Escape.unescape (Request.getparameter ("name"));

Escape classes are as follows:
Copy Code code as follows:

Package com.laneasy.hy.util;

/**
* JS Coding Java Implementation class.
*
* @author Yangjinde
*/
public class Escape {

/** the Constant hex. */
Private final static string[] hex = {"00", "01", "02", "03", "04", "05",
"The", "" "," "", "" "," 0A "," 0B "," 0C "," 0D "," 0E "," 0F "," 10 ",
"One", "" "," "", "", "", "", "", "", "", "" 1 A "," 1 B ",
"1C", "1D", "1E", "1F", "20", "21", "22", "23", "24", "25", "26",
"A", "a", "the", "2A", "2B", "2C", "2D", "2E", "2F", "30", "31",
"The", "the", "the" "," "," "," "," "," "3", "a", "3B", "3C",
"3D", "3E", "3F", "40", "41", "42", "43", "44", "45", "46", "47",
"A", "4", "A", "4 B", "4C", "4D", "4E", "4F", "50", "51", "52",
"," "," "," "," "," "," "," "the", "5A", "5B", "5C", "5D",
"5E", "5F", "60", "61", "62", "63", "64", "65", "66", "67", "68",
"The", "6A", "6B", "6C", "6D", "6E", "6F", "70", "71", "72", "73",
"The", "" "," "," "," "," "," "," "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",
"", "" "," the "", "", "", "", "" 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"};

/** the Constant val. * *
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};

/**
* Escape.
*
* @param s
* The S
*
* @return The string
*/
/**
* Code
*
* @param s
* @return
*/
public static String Escape (string s) {
if (s!= null) {
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 ();
}
return null;
}

/**
* Unescape.
*
* @param s
* The S
*
* @return The string
*/
/**
* Decoding instructions: This method ensures that the correct "decoding" result can be obtained regardless of whether the parameter S is encoded by Escape ().
*
* @param s
* @return
*/
public static string unescape (string s) {
if (s!= null) {
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 ();
}
return null;
}

}

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.