Java中使用Base64编码实例

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Maven需要引入的jar

<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.52</version>
</dependency>

代码

package com.liyong.base64;import java.io.IOException;import java.io.UnsupportedEncodingException;import org.apache.commons.codec.binary.Base64;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;public class Base64Test {/** 默认编码UTF-8 */public static final String DEFAULT_ENCODING = "UTF-8";public static void main(String[] args) {String src = "Base64 编码测试";jdkBase64(src);System.out.println("--------------");ccBase64(src);System.out.println("--------------");bcBase64(src);}/** * JDK提供实现Base64编码 */public static void jdkBase64(String src) {try {BASE64Encoder encoder = new BASE64Encoder();String encodeStr = encoder.encode(src.getBytes(DEFAULT_ENCODING));System.out.println("JDK BASE64 encoder: " + encodeStr);BASE64Decoder decoder = new BASE64Decoder();String decodeStr = new String(decoder.decodeBuffer(encodeStr), DEFAULT_ENCODING);System.out.println("JDK BASE64 decoder: " + decodeStr);} catch (IOException e) {e.printStackTrace();}}/** * 用Apache的common codes实现 */public static void ccBase64(String src) {try {byte[] encodeBytes = Base64.encodeBase64(src.getBytes(DEFAULT_ENCODING));String encodeStr = new String(encodeBytes, DEFAULT_ENCODING);System.out.println("CC BASE64 encoder: " + encodeStr);byte[] decodeBytes = Base64.decodeBase64(encodeStr.getBytes(DEFAULT_ENCODING));String decodeStr = new String(decodeBytes, DEFAULT_ENCODING);System.out.println("CC BASE64 decoder: " + decodeStr);} catch (UnsupportedEncodingException e) {e.printStackTrace();}}/** * 用bouncy castle实现 */public static void bcBase64(String src) {try {byte[] encodeBytes = org.bouncycastle.util.encoders.Base64.encode(src.getBytes(DEFAULT_ENCODING));String encodeStr = new String(encodeBytes, DEFAULT_ENCODING);System.out.println("BC BASE64 encoder: " + encodeStr);byte[] decodeBytes = org.bouncycastle.util.encoders.Base64.decode(encodeStr);String decodeStr = new String(decodeBytes, DEFAULT_ENCODING);System.out.println("BC BASE64 decoder: " + decodeStr);} catch (UnsupportedEncodingException e) {e.printStackTrace();}}}

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