eclipse报错Access restriction: The type 'BASE64Encoder' is not API处理方案

如下错误： Access restriction: The type ‘BASE64Decoder’ is not API (restriction on required library ‘D:\java\jdk1.7.0_45\jre\lib\rt.jar’) 解决其实很简单，把JRE System Library移除重新添加即可。 方法：项目右键–>Properties–>Java Buil

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