解决项目报错出现Access restriction: The type BASE64Encoder is not accessible due to restriction

项目报错出现：Access restriction: The type BASE64Encoder is not accessible due to restriction on required library E:\MyEclipse 2014\MyEclipse2014\binary\com.sun.java.jdk7.win32.x86_64_1.7.0.u45\jre\lib\rt.jar 怎么解决？

右键项目==>选择properties

选择左边的java bulid path==>Libraries==>jre System Library；

打开jre System Library==>Access Rules==>Edit；

打开之后选择Add，在弹出框的Resolution上选择Accessible，Rule Pattern上填入**

最后保存更改即可