import java.util.Base64;
private static String token = "";
byte[] bytes = token.getBytes();
Base64.Encoder encoder = Base64.getEncoder();
String encodeToken = encoder.encodeToString(bytes);
首先 先獲取字符串的字節碼數組,然后調用java.util.Base64 包下面的API
轉完了還是用String接收