Commons-codec Usage Introduction

commons-codecis a package provided by the Apache Open source organization for digest operations and encoding. In this package is divided into four types of encryption: Binaryencoders, Digestencoders, Languageencoders, Networkencoders.

Today I would like to introduce you how to use commons-codec the package to complete the common coding, digest operations.

Base64

Example code:

@TestpublicvoidtestBase64(){   System.out.println("==============Base64================");   byte"jianggujin".getBytes();   new Base64();   String encode = base64.encodeAsString(data);   System.out.println(encode);   System.out.println(new String(base64.decode(encode)));}

Operation Result:

==============Base64================amlhbmdndWppbg==jianggujin

MD5 Digest Operations

Example code:

@TestpublicvoidtestMD5(){   System.out.println("==============MD5================");   String result = DigestUtils.md5Hex("jianggujin");   System.out.println(result);}

Operation Result:

acab4efdfd3b8efcdec37fe160d7be0e

Summary operations such as SHA and MD5 are similar.

Urlcodec

Example code:

@TestpublicvoidtestURLCodecthrows Exception{   System.out.println("==============URLCodec================");   new URLCodec();   "蒋固金";   "UTF-8");   System.out.println(encode);   "UTF-8"));}

Operation Result:

==============URLCodec================%E8%92%8B%E5%9B%BA%E9%87%91蒋固金

Complete Sample code:

 PackageCom.gujin.codec;ImportOrg.apache.commons.codec.binary.Base64;ImportOrg.apache.commons.codec.digest.DigestUtils;ImportOrg.apache.commons.codec.net.URLCodec;ImportOrg.junit.Test; Public  class codectest{   @Test    Public void testBase64() {System.out.println ("==============base64================");byte[] data ="Jianggujin". GetBytes (); Base64 base64 =NewBase64 ();      String encode = base64.encodeasstring (data);      System.out.println (encode); System.out.println (NewString (Base64.decode (encode))); }@Test    Public void testMD5() {System.out.println ("==============md5================"); String result = Digestutils.md5hex ("Jianggujin");   SYSTEM.OUT.PRINTLN (result); }@Test    Public void Testurlcodec()throwsException {System.out.println ("==============urlcodec================"); Urlcodec codec =NewUrlcodec (); String data ="Shung"; String encode = codec.encode (data,"UTF-8");      System.out.println (encode); System.out.println (Codec.decode (Encode,"UTF-8")); }}

Commons-codec Usage Introduction