sun.misc.BASE64Encoder 报错！找不到解决的方法

sun.misc.BASE64Encoder和sun.misc.BASE64Encoder 找不到解决的方法

1.右键项目-》属性-》java bulid path-》jre System Library-》access rules-》resolution选择accessible。以下填上** 点击确定就可以。！！

2.在MyEclipse中编写Java代码时，用到了BASE64Decoder，import sun.misc.BASE64Decoder；但是Eclipse提示： 

Access restriction: The type BASE64Decoder is not accessible due to restriction on required library C:\Program files\java\jre6\lib\rt.jar 

Access restriction : The constructor BASE64Decoder() is not accessible due to restriction on required library C:\Program files\java\jre6\lib\rt.jar 

解决方式1（推荐）： 

仅仅须要在project build path中先移除JRE System Library，再加入库JRE System Library，又一次编译后就一切正常了。 

解决方式2： 

Windows -> Preferences -> Java -> Compiler -> Errors/Warnings -> 

Deprecated and trstricted API -> Forbidden reference (access rules): -> change to warning

最后就是反手一赞，谢谢！