Here you can find the source of encode(final String s)
| Parameter | Description |
|---|---|
| UnsupportedEncodingException | an exception |
public static String encode(final String s) throws UnsupportedEncodingException
//package com.java2s; /*/*from w w w. j av a 2 s.co m*/ * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. * If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. */ import java.io.UnsupportedEncodingException; public class Main { /** * Encode a string for inclusion in a URI (according to RFC 2396). * * Unsafe characters are escaped by encoding them in three-character sequences '%xy', where 'xy' is the two-digit * hexadecimal representation of the lower 8-bits of the character. * * The question mark '?' character is also escaped, as required by RFC 2255. * * The string is first converted to the specified encoding. For LDAP (2255), the encoding must be UTF-8. * * @throws UnsupportedEncodingException */ public static String encode(final String s) throws UnsupportedEncodingException { final byte[] bytes = s.trim().getBytes("UTF-8"); final int count = bytes.length; /* * From RFC 2396: * * mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")" reserved = ";" | "/" | ":" | "?" | "@" | "&" | "=" * | "+" | "$" | "," */ final String allowed = "=,+;.'-@&/$_()!~*:"; // '?' is omitted final char[] buf = new char[3 * count]; int j = 0; for (int i = 0; i < count; i++) { if ((bytes[i] >= 0x61 && bytes[i] <= 0x7A) || // a..z (bytes[i] >= 0x41 && bytes[i] <= 0x5A) || // A..Z (bytes[i] >= 0x30 && bytes[i] <= 0x39) || // 0..9 (allowed.indexOf(bytes[i]) >= 0)) { buf[j++] = (char) bytes[i]; } else { buf[j++] = '%'; buf[j++] = Character.forDigit(0xF & (bytes[i] >>> 4), 16); buf[j++] = Character.forDigit(0xF & bytes[i], 16); } } return new String(buf, 0, j); } }