sun.misc.BASE64Encoder报错

问题描述：Access restriction: The type 'BASE64Encoder' is not API (restriction on
 required library 'D:\MyEclipse2017\InstallDirectory\binary

 \com.sun.java.jdk8.win32.x86_64_1.8.0.v112\jre\lib\rt.jar')

解决办法：右击项目打开Build Path 选中如图Access rules:No rules definedm,确定就行了。