文件名称:Java.III.PackageChecks
- 所属分类：
- JSP源码/Java
- 资源属性：
- [Java] [源码]
- 上传时间：
- 2012-11-26
- 文件大小：
- 1kb
- 下载次数：
- 0次
- 提 供 者：
- n**
- 相关连接：
- 无
- 下载说明：
- 别用迅雷下载，失败请重下，重下不扣分！
介绍说明－－下载内容均来自于网络，请自行研究使用
This example shows the ability of Java to declaratively restrict access to certain packages when run with SecurityManager.
By default, access to classes in "sun.*" packages is restricted. However, since Java runs without SecurityManager by default, these checks may not be always performed.
An explanation of example:
1. RestrictedPackageAccess class creates and calls sun.misc.BASE64Encoder
2. First, the default execution happens without SecurityManager, and everything is permitted
3. Secondly, SecurityManager is enabled, and the code doesn t pass the security check
4. However, when the code is run with a different policy, that allows access, the excution goes fine again.
By default, access to classes in "sun.*" packages is restricted. However, since Java runs without SecurityManager by default, these checks may not be always performed.
An explanation of example:
1. RestrictedPackageAccess class creates and calls sun.misc.BASE64Encoder
2. First, the default execution happens without SecurityManager, and everything is permitted
3. Secondly, SecurityManager is enabled, and the code doesn t pass the security check
4. However, when the code is run with a different policy, that allows access, the excution goes fine again.
(系统自动生成,下载前可以参看下载内容)
下载文件列表
access.policy
execute.bat
Java.III.PackageChecks.txt
RestrictedPackageAccess.java
execute.bat
Java.III.PackageChecks.txt
RestrictedPackageAccess.java