使用JDK的类 BASE64Decoder BASE64Encoder
Java代码 
package test;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
/**
* BASE64加密解密
*/
public class BASE64
{
/**
* BASE64解密
* @param key
* @return
* @throws Exception
*/
public static byte[] decryptBASE64(String key) throws Exception {
return (new BASE64Decoder()).decodeBuffer(key);
}
/**
* BASE64加密
* @param key
* @return
* @throws Exception
*/
public static String encryptBASE64(byte[] key) throws Exception {
return (new BASE64Encoder()).encodeBuffer(key);
}
public static void main(String[] args) throws Exception
{
String para = "{\"IdList1\": 1,\"IdList2\": [1,2,3,4,5,6,18],\"IdList3\": [1,2]}";
String data = BASE64.encryptBASE64(para.getBytes());
System.out.println("加密前："+data);
byte[] byteArray = BASE64.decryptBASE64(data);
System.out.println("解密后："+new String(byteArray));
}
}
使用Apache commons codec 类Base64获取【下载地址】
Java代码
package test;
import java.io.UnsupportedEncodingException;
import org.apache.commons.codec.binary.Base64;
public class Base64Util {
public static String encode(byte[] binaryData) throws UnsupportedEncodingException {
return new String(Base64.encodeBase64(binaryData), "UTF-8");
}
public static byte[] decode(String base64String) throws UnsupportedEncodingException {
return Base64.decodeBase64(base64String.getBytes("UTF-8"));
}
public static void main(String[] args) throws UnsupportedEncodingException {
String para = "{\"IdList1\": 1,\"IdList2\": [1,2,3,4,5,6,18],\"IdList3\": [1,2]}";
String data = Base64Util.encode(para.getBytes());
System.out.println("加密前："+data);
byte[] byteArray = Base64Util.decode(data);
System.out.println("解密后："+new String(byteArray));
}
}
原文：http://11220684.blog.51cto.com/11210684/1743689