Access restriction: The type BASE64Decoder is not accessible due to restriction on required

本文介绍了解决在Eclipse中使用sun.misc.BASE64Decoder时遇到的访问限制问题的方法。通过移除并重新添加JRE System Library到项目构建路径中,可以有效解决该问题。

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sun.misc.BASE64Encoder找不到jar包的解决方法

在MyEclipse中编写Java代码时,用到了BASE64Decoder,importsun.misc.BASE64Decoder;可是Eclipse提示:
Access restriction: The type BASE64Decoder is not accessible due torestriction on required library C:\Program
files\java\jre6\lib\rt.jar
Access restriction : The constructor BASE64Decoder() is notaccessible due to restriction on required library C:\Programfiles\java\jre6\lib\rt.jar

解决办法:

在项目的Buildpath中先移除JRE System Library,再添加库JRE SystemLibrary,重新编译后就一切正常了

在Eclipse中编写Java代码时,用到了BASE64Decoder,import sun.misc.BASE64Decoder;可是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 
搞不懂是为什么,最后在http://forums.dzone.com/eclipse/384-access-restriction- problems.html找到答案,只需要在project build path中先移除JRE System Library,再添加库JRE System Library,重新编译后就一切正常了。但是我仍然很疑惑是为什么。。。
------------------------------ 

还有人说是按照下面的解决办法,但是个人觉得这样不是很靠谱……
Windows -> Preferences -> Java -> Compiler -> Errors/Warnings -> 
Deprecated and trstricted API -> Forbidden reference (access rules): -> change to warning

Exception in thread "main" java.lang.Error: Unresolved compilation problems: Access restriction: The type String is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The type UIManager is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The type UIManager is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar The method getSystemLookAndFeel() is undefined for the type UIManager Access restriction: The type Exception is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The method printStackTrace() from the type Throwable is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The type JFrame is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The constructor JFrame(String) is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The type JFrame is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The method setDefaultCloseOperation(int) from the type JFrame is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The type JFrame is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The field EXIT_ON_CLOSE from the type JFrame is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The method setSize(int, int) from the type Window is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The method setLocationRelativeTo(Component) from the type Window is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The method add(Component) from the type Container is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The constructor JLabel(String, int) is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The type JLabel is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The type SwingConstants is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The field CENTER from the type SwingConstants is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar Access restriction: The method setVisible(boolean) from the type Window is not accessible due to restriction on required library C:\Program Files (x86)\Java\jdk1.8.0\jre\lib\rt.jar at MainApp.main(MainApp.java:5)测试的代码报错
最新发布
12-16
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