工具類： 

package com.valueaddedservices.web.utils;

import java.util.Date;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

import com.snake.bsys.common.support.DateUtil;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

/**
 *  類名稱：AESUtils 類描述： AES加解密工具類 建立人：qiuying
 * 建立時間：2018年11月28日 9:07:01
 * 
 * @version
 */
public class AESUtils {
	private static String algorithm = "AES";
	


	/**
	 * 加密
	 * @param str
	 * @param key
	 * @return
	 * @throws Exception
	 */
	public static String aesEncrypt(String str, String key) throws Exception {
		if (str == null || key == null)
			return null;
		Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
		cipher.init(Cipher.ENCRYPT_MODE,
				new SecretKeySpec(key.getBytes("utf-8"), algorithm));
		byte[] bytes = cipher.doFinal(str.getBytes("utf-8"));
		return new BASE64Encoder().encode(bytes);
	}
	/**
	 * 解密
	 * @param str
	 * @param key
	 * @return
	 * @throws Exception
	 */
	public static String aesDecrypt(String str, String key) throws Exception {
		if (str == null || key == null)
			return null;
		Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
		cipher.init(Cipher.DECRYPT_MODE,
				new SecretKeySpec(key.getBytes("utf-8"), algorithm));
		byte[] bytes = new BASE64Decoder().decodeBuffer(str);
		bytes = cipher.doFinal(bytes);
		return new String(bytes, "utf-8");
	}
}
 

例項：

          
		    
		   
		    String aesEncrypt = AESUtils.aesEncrypt(加密內容, 祕鑰);