1. 导包

    <!-- https://mvnrepository.com/artifact/org.apache.directory.studio/org.apache.commons.codec -->
    <dependency>
      <groupId>org.apache.directory.studio</groupId>
      <artifactId>org.apache.commons.codec</artifactId>
      <version>1.8</version>
    </dependency>

2. 替换

import sun.misc.BASE64Encoder;

替换

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

---

return new  BASE64Encoder().encode(encrypted);

替换

return Base64.encodeBase64String(encrypted);

---

byte[] encrypted = new BASE64Decoder().decodeBuffer(text); 

替换

byte[] encrypted =Base64.decodeBase64(text);

---