差異處
這裏顯示兩個版本的差異處。
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java:basic:converter [2016/11/22 13:30] tony [Hex String to byte array] |
java:basic:converter [2017/08/19 23:33] |
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| - | {{tag>java}} | ||
| - | ====== Converter ====== | ||
| - | ===== Hex String to byte array ===== | ||
| - | 目的是將0x8086轉為長度為2的byte array，內容為{0x80, 0x86}: | ||
| - | <code java> | ||
| - | static public byte[] parseHextringtoBytes(String hexStr){ | ||
| - | hexStr = hexStr.replaceAll("0[x|X]", ""); | ||
| - | if( hexStr.length() % 2 != 0 ) { | ||
| - | hexStr = "0".concat(hexStr); | ||
| - | } | ||
| - | char[] hexChars = hexStr.toCharArray(); | ||
| - | byte[] b = new byte[hexStr.length() / 2]; | ||
| - | for (int i = 0; i < b.length; i++) { | ||
| - | int index = i * 2; | ||
| - | int v = Integer.parseInt(String.valueOf(Arrays.copyOfRange(hexChars, index, index+2)), 16); | ||
| - | b[i] = (byte) v; | ||
| - | } | ||
| - | return b; | ||
| - | } | ||
| - | </code> | ||
