sun.misc.BASE64Encoder我找不到jar一揽子解决方案

1.合适的项目 --> 属性(Properties) --> java bulid path --> Libraries -> jre System Library(点加号在前面) --> Access rules(选择这个开头的) --> Edit --> Add --> Resolution选择Accessible，Rule Pattern填上** (两个星号)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