Implementation of JavaScript escape/Unescape encoding-> webjx. com provides the latest and fastest Web Page Technology

Java escape coding implementation that complies with JavaScript Unescape functions (UNICODE supported)
　　
Recently, a cross-origin interaction program is being created, and the interaction process is very complicated. In addition, one end can only use JavaScript to process the returned results.
　　
Therefore, we found that the urlencoder. encode method of Java is no longer compatible with the Unescape method of JavaScript.
　　
In the mainstream browser versions, JavaScript has begun to use Unicode as the string's internal code for encoding. that is, the Unicode Character After escape looks like % uabcd and Java's urlencoder. the result obtained by the encode method is % AB % Cd. The converted result must be garbled.
　　
There are two methods. One is to use Java to generate a new encoding method. second, use JavaScript to implement a decoding method for the old encoding. I thought about it. It is a little more convenient to use Java.
　　
The JAVA Implementation of the escape posted last time seems to be useful to everyone. Recently, Zeng Jun proposed that Unescape also makes sense for the interaction between JavaScript and the backend, so it was implemented together.
　　
The code is very simple, so there is no need to comment. Consistently, we still follow the principle of "Change Time by space.
　　
The required bucket. Always, help yourself.
/**
* JAVA Implementation of JavaScript escape/Unescape Encoding
* Author jackyz
* Keep this copyright info while using this method by free
*/
Public class escape {
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,
0 x, 0 x, 0 x, 0 x, 0 x, 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,
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, 0x3f, 0x3f
};
Public static string escape (string s ){
Stringbuffer sbuf = new stringbuffer ();
Int Len = S. Length ();
For (INT I = 0; I int CH = S. charat (I );
If (CH = '') {// space: map to '+'
Sbuf. append ('+ ');
} Else if ('A' sbuf. append (char) CH );
} Else if ('A' sbuf. append (char) CH );
} Else if ('0' 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 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 ();
}
Public static string Unescape (string s ){
Stringbuffer sbuf = new stringbuffer ();
Int I = 0;
Int Len = S. Length ();
While (I int CH = S. charat (I );
If (CH = '+') {// +: map''
Sbuf. append ('');
} Else if ('A' sbuf. append (char) CH );
} Else if ('A' sbuf. append (char) CH );
} Else if ('0' 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 I + = 2;
} Else {// % uxxxx: map to Unicode (XXXX)
CINT = (cint I + = 5;
}
Sbuf. append (char) CINT );
}
I ++;
}
Return sbuf. tostring ();
}
Public static void main (string [] ARGs ){
String stest = "Chinese 1234 ABCD [] (),. ~ //";
System. Out. println (stest );
System. Out. println (escape (stest ));
System. Out. println (Unescape (escape (stest )));
}
}