java的加密和解密

package com.ysdq.cms.util;

import org.apache.commons.codec.binary.Base64;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.security.Key;

/**
 * 加密
 * @author sutong
 * @date 2018-06-26 11:34:00
 */
public class AESUtil {

    private static final String KEY = "#VmGRi";

    private static final Key KEY_SPEC = new SecretKeySpec(KEY.getBytes(), "AES");

    /**
     * 加密
     * @param str
     * @return
     */
    public static String encryt(String str) {
        // 根据**，对Cipher对象进行初始化，ENCRYPT_MODE表示加密模式
        try {
            Cipher c = Cipher.getInstance("AES");
            c.init(Cipher.ENCRYPT_MODE, KEY_SPEC);
            byte[] src = str.getBytes();
            // 加密，结果保存进cipherByte
            byte[] cipherByte = c.doFinal(src);
            return Base64.encodeBase64String(cipherByte);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 解密
     * @param deCodeStr
     * @return
     */
    public static String decrypt(String deCodeStr) {
        // 根据**，对Cipher对象进行初始化，DECRYPT_MODE表示解密模式
        try {
            if (null == deCodeStr){
                return null;
            }
            byte[] buff = Base64.decodeBase64(deCodeStr);
            Cipher c;
            c = Cipher.getInstance("AES");
            c.init(Cipher.DECRYPT_MODE, KEY_SPEC);
            byte[] cipherByte = c.doFinal(buff);
            return new String(cipherByte);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

}