springsecurity 权限管理实例菜单管理之自定义加密

自定义加密是实现PasswordEncoder接口并重写其两个方法

public interface PasswordEncoder {
    String encode(CharSequence var1); //加密

    boolean matches(CharSequence var1, String var2);//比较

    //对密码进行再次加密
    default boolean upgradeEncoding(String encodedPassword) {
        return false;
    }
}

自定义具体实现

MD5工具代码实现

public class MD5Util {

    protected MD5Util(){

    }

    private static final String ALGORITH_NAME = "md5";

    private static final int HASH_ITERATIONS = 2;

    public static String encrypt_md5(String password) {
        byte[] secretBytes = null;
        try {
            secretBytes = MessageDigest.getInstance("md5").digest(
                    password.getBytes());
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("找不到md5算法");
        }
        String md5code = new BigInteger(1, secretBytes).toString(16);
        for (int i = 0; i < 32 - md5code.length(); i++) {
            md5code = "0" + md5code;
        }
        return md5code;
    }
}

实现自定义MD5加密

public class MD5PasswordEncoder implements PasswordEncoder {
    /**
     * 加密方法
     * @param charSequence
     * @return
     */
    @Override
    public String encode(CharSequence charSequence) {
        return MD5Util.encrypt_md5(charSequence.toString());
    }

    /**
     * 密码比较
     * @param charSequence
     * @param encodedPassword
     * @return
     */
    @Override
    public boolean matches(CharSequence charSequence, String encodedPassword) {
        return encodedPassword.equals(MD5Util.encrypt_md5(charSequence.toString()));
    }
}