Base64Util工具类

参考

import org.apache.commons.lang3.StringUtils;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import java.io.UnsupportedEncodingException;


public class Base64Util {
    // 加密
    public static String encode(String str) {
        byte[] b = null;
        String s = null;
        try {
            b = str.getBytes("utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        if (b != null) {
            s = new BASE64Encoder().encode(b);
        }
        return s;
    }

    // 解密
    public static String decode(String s) {
        byte[] b = null;
        String result = null;
        if (s != null) {
            BASE64Decoder decoder = new BASE64Decoder();
            try {
                b = decoder.decodeBuffer(s);
                result = new String(b, "utf-8");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return result;
    }

    public static byte[] decodeImg(String imgStr) {
        byte[] b = null;
        if (!StringUtils.isNotBlank(imgStr)) {
            return b;
        }
        try {
            BASE64Decoder decoder = new BASE64Decoder();
            b = decoder.decodeBuffer(imgStr);
            for (int i = 0; i < b.length; i++) {
                if (b[i] < 0) {
                    b[i] += 256;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return b;
    }


}