在黑莓中解码URL

Question

任何人都可以解释我如何解码Blackberry中的URL ..... ????

Answer 1

我在Blackberry支持论坛中找到了这个答案：URL Encoding and Decoding

我尝试了它并且有效。

Answer 2

您可以使用解码功能解码网址

  public static String decode(String s, String enc)
    throws UnsupportedEncodingException{

    boolean needToChange = false;
    int numChars = s.length();
    StringBuffer sb = new StringBuffer(numChars > 500 ? numChars / 2 : numChars);
    int i = 0;

    if (enc.length() == 0) {
        throw new UnsupportedEncodingException ("URLDecoder: empty string enc parameter");
    }

    char c;
    byte[] bytes = null;
    while (i < numChars) {
        c = s.charAt(i);
        switch (c) {
        case '+':
            sb.append(' ');
            i++;
            needToChange = true;
            break;
        case '%':
            /*
             * Starting with this instance of %, process all
             * consecutive substrings of the form %xy. Each
             * substring %xy will yield a byte. Convert all
             * consecutive  bytes obtained this way to whatever
             * character(s) they represent in the provided
             * encoding.
             */

            try {

                // (numChars-i)/3 is an upper bound for the number
                // of remaining bytes
                if (bytes == null)
                    bytes = new byte[(numChars-i)/3];
                int pos = 0;

                while ( ((i+2) < numChars) &&
                        (c=='%')) {
                    int v = Integer.parseInt(s.substring(i+1,i+3),16);
                    if (v < 0)
                        throw new IllegalArgumentException("URLDecoder: Illegal hex characters in escape (%) pattern - negative value");
                    bytes[pos++] = (byte) v;
                    i+= 3;
                    if (i < numChars)
                        c = s.charAt(i);
                }

                // A trailing, incomplete byte encoding such as
                // "%x" will cause an exception to be thrown

                if ((i < numChars) && (c=='%'))
                    throw new IllegalArgumentException(
                     "URLDecoder: Incomplete trailing escape (%) pattern");

                sb.append(new String(bytes, 0, pos, enc));
            } catch (NumberFormatException e) {
                throw new IllegalArgumentException(
                "URLDecoder: Illegal hex characters in escape (%) pattern - "
                + e.getMessage());
            }
            needToChange = true;
            break;
        default:
            sb.append(c);
            i++;
            break;
        }
    }

    return (needToChange? sb.toString() : s);
}