Java Tips : Apache Commons Codec 라이브러리 활용

Apache Commons Codec은 여기에서 필요한 라이브러리를 다운 받을 수 있습니다. 다양한 인코딩 방식을 제공함으로 유용하게 사용하실 수 있을 것입니다.
package com.mimul.sample; import java.net.URLDecoder; import org.apache.commons.codec.binary.Base64; import org.apache.commons.codec.binary.BinaryCodec; import org.apache.commons.codec.binary.Hex; import org.apache.commons.codec.digest.DigestUtils; import org.apache.commons.codec.net.BCodec; import org.apache.commons.codec.net.QCodec; import org.apache.commons.codec.net.URLCodec; public class CodecTest { public static void main(String[] args) { String encodedText = null; String decodedText = null; String clearText = "미물닷컴에 오신것을 환영합니다."; try { // Base64 encode/decode encodedText = new String(Base64.encodeBase64(clearText.getBytes())); decodedText = new String(Base64.decodeBase64(encodedText.getBytes())); System.out.println("BASE64 Encoded: " + encodedText); System.out.println("BASE64 Decoded:" + decodedText); // URL encode/decode URLCodec urlCodec = new URLCodec(); encodedText = urlCodec.encode(clearText); decodedText = urlCodec.decode(encodedText); System.out.println("URL Encoded: " + encodedText); System.out.println("URL Decoded:" + decodedText); System.out.println("URLDecoder.decode:" + URLDecoder.decode(encodedText, "utf-8")); // MD5/SHA String md5HexText = DigestUtils.md5Hex(clearText); String shaHexText = DigestUtils.shaHex(clearText); System.out.println("MD5: " + md5HexText); System.out.println("SHA: " + shaHexText); // Hex encodedText = new String(Hex.encodeHex(clearText.getBytes())); decodedText = new String(Hex.decodeHex(encodedText.toCharArray())); System.out.println("Hexa Encoded: " + encodedText); System.out.println("Hexa Decoded: " + decodedText); // Binary encode/decode BinaryCodec binaryCodec = new BinaryCodec(); byte[] bits = new byte[2]; String encodedBinary = new String(binaryCodec.encode(bits)); System.out.println("Binary Encoded: " + encodedBinary); bits = new byte[2]; bits[0] = 0x01; encodedBinary = new String(binaryCodec.encode(bits)); System.out.println("Binary Encoded:" + encodedBinary); // QCodec encode/decode QCodec qcodec = new QCodec(); encodedText = qcodec.encode(clearText); decodedText = qcodec.decode(encodedText); System.out.println("QCodec Encoded: " + encodedText); System.out.println("QCodec Decoded: " + decodedText); // BCodec encode/decode BCodec bcodec = new BCodec(); encodedText = (String) bcodec.encode((Object) clearText); decodedText = bcodec.decode(encodedText); System.out.println("Encoded: " + encodedText); System.out.println("Decoded: " + decodedText); } catch (Throwable e) { e.printStackTrace(); } } }

실행 결과 

BASE64 Encoded: ucy5sLTlxMS/oSC/wL3FsM3AuyDIr7+1x9W0z7TZLg==
BASE64 Decoded:미물닷컴에 오신것을 환영합니다.
URL Encoded: %EB%AF%B8%EB%AC%BC%EB%8B%B7%EC%BB%B4%EC%97%90+%EC%98%A4%EC%8B%A0%EA%B2%83%EC%9D%84+%ED%99%98%EC%98%81%ED%95%A9%EB%8B%88%EB%8B%A4.
URL Decoded:미물닷컴에 오신것을 환영합니다.
URLDecoder.decode:미물닷컴에 오신것을 환영합니다.
MD5: 9f68c3c2124a995573581ba44fca8e7e
SHA: 6ae40c444ff5ac6a82c017831dc277792d43136a
Hexa Encoded: b9ccb9b0b4e5c4c4bfa120bfc0bdc5b0cdc0bb20c8afbfb5c7d5b4cfb4d92e
Hexa Decoded: 미물닷컴에 오신것을 환영합니다.
Binary Encoded: 0000000000000000
Binary Encoded:0000000000000001
QCodec Encoded: =?UTF-8?Q?=EB=AF=B8=EB=AC=BC=EB=8B=B7=EC=BB=B4=EC=97=90 =EC=98=A4=EC=8B=A0=EA=B2=83=EC=9D=84 =ED=99=98=EC=98=81=ED=95=A9=EB=8B=88=EB=8B=A4.?=
QCodec Decoded: 미물닷컴에 오신것을 환영합니다.
Encoded: =?UTF-8?B?66+466y864u37Lu07JeQIOyYpOyLoOqyg+ydhCDtmZjsmIHtlanri4jri6Qu?=
Decoded: 미물닷컴에 오신것을 환영합니다.

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Posted by 미물 on 2008년 1월 6일 (일) 오전 7시 33분 00초 #