java实现AES加密解密

package com.utils;import org.apache.tomcat.util.codec.binary.Base64;import javax.crypto.Cipher;import javax.crypto.spec.SecretKeySpec;import java.io.UnsupportedEncodingException;/** * Created by IntelliJ IDEA * <p>〈类详细描述〉 </p> * 〈功能详细描述〉 * @date 2017/5/12 * @time 10:40 * @version 1.0 */public class AES {    public static final String CHAR_ENCODING = "UTF-8";    public static final String AES_ALGORITHM = "AES/ECB/PKCS5Padding";   public static byte[] encrypt(byte[] data, byte[] key) {        if(key.length!=16){            throw new RuntimeException("Invalid AES key length (must be 16 bytes)");        }        try {            SecretKeySpec secretKey = new SecretKeySpec(key, "AES");            byte[] enCodeFormat = secretKey.getEncoded();            SecretKeySpec seckey = new SecretKeySpec(enCodeFormat,"AES");            Cipher cipher = Cipher.getInstance(AES_ALGORITHM);// 创建密码器            cipher.init(Cipher.ENCRYPT_MODE, seckey);// 初始化            byte[] result = cipher.doFinal(data);            return result;// 加密        } catch (Exception e){            throw new RuntimeException("encrypt fail!", e);        }    }    /**     * 解密     *     * @param / content     *            待解密内容     * @param /password     *            解密密钥     * @return     */   public static byte[] decrypt(byte[] data, byte[] key) {        if(key.length!=16){            throw new RuntimeException("Invalid AES key length (must be 16 bytes)");        }        try {            SecretKeySpec secretKey = new SecretKeySpec(key, "AES");            byte[] enCodeFormat = secretKey.getEncoded();            SecretKeySpec seckey = new SecretKeySpec(enCodeFormat, "AES");            Cipher cipher = Cipher.getInstance(AES_ALGORITHM);// 创建密码器            cipher.init(Cipher.DECRYPT_MODE, seckey);// 初始化            byte[] result = cipher.doFinal(data);            return result; // 加密        } catch (Exception e){            throw new RuntimeException("decrypt fail!", e);        }    }   public static String encryptToBase64(String data, String key){        try {            byte[] valueByte = encrypt(data.getBytes(CHAR_ENCODING), key.getBytes(CHAR_ENCODING));            return new String(Base64.encodeBase64(valueByte,false));        } catch (UnsupportedEncodingException e) {            throw new RuntimeException("encrypt fail!", e);        }    }   public static String decryptFromBase64(String data, String key){        try {            byte[] originalData = Base64.decodeBase64(data.getBytes());            byte[] valueByte = decrypt(originalData, key.getBytes(CHAR_ENCODING));            return new String(valueByte, CHAR_ENCODING);        } catch (UnsupportedEncodingException e) {            throw new RuntimeException("decrypt fail!", e);        }    }   public static void main(String[] args) throws UnsupportedEncodingException {       String key = "0123456789012345";        String s = "sadkamkmk4584515";        //byte [] a = key.getBytes("UTF-8");       //System.out.println(a.length);       String s2 = "fOz76GnwQ7cG76QrPj+7+pY6IW0XmaHp0VutFEQSbyk=";        String r = encryptToBase64(s,key);        String j = decryptFromBase64(s2,key);      System.out.println(r);       System.out.println(j);    }}