我们正在尝试使用以下代码从目录中获取文件数:
File dataDir = new File(dataHome);
final File privdataDir = dataDir;
System.out.println("The datadir is : \n"+dataDir+"The privdataDir is : \n"+privdataDir);
int count = 0;
final int[] privcount = {0};
if (privdataDir != null) {
System.out.println("Going into doPriveledge block");
AccessController.doPrivileged(new PrivilegedAction() {
public Object run()
{
privcount[0] = privdataDir.list().length;
return null;
}
});
}
count = privcount[0];
System.out.println("The count is : "+count);
dataDir 变量引用路径:C:\MyApp\config 它在代码的以下行抛出 AccessControlException:
privcount[0] = privdataDir.list().length;
例外是:
[ERROR][SmartlinkThread] 2015-03-18 07:22:59.0862 GMT: SmartlinkThread: Error processing agg interval: java.security.AccessControlException: Access denied (java.io.FilePermission C:\MyApp\config read) <AggIntervalTaskThread>
[ERROR][SmartlinkThread] 2015-03-18 07:22:59.0862 GMT: java.security.AccessControlException: Access denied (java.io.FilePermission C:\MyApp\config read) <AggIntervalTaskThread>
[ERROR][SmartlinkThread] 2015-03-18 07:22:59.0863 GMT: at java.security.AccessController.checkPermission(AccessController.java:132) <AggIntervalTaskThread>
[ERROR][SmartlinkThread] 2015-03-18 07:22:59.0863 GMT: at java.lang.SecurityManager.checkPermission(SecurityManager.java:544) <AggIntervalTaskThread>
[ERROR][SmartlinkThread] 2015-03-18 07:22:59.0863 GMT: at java.lang.SecurityManager.checkRead(SecurityManager.java:883) <AggIntervalTaskThread>
[ERROR][SmartlinkThread] 2015-03-18 07:22:59.0863 GMT: at java.io.File.list(File.java:982) <AggIntervalTaskThread>
以下内容已经添加到 java.policy 文件和 server.policy 文件中
grant codeBase "file:C:/MyApp/-" {
permission java.security.AllPermission;
};
此代码正在为 IBM Websphere 8.0.x 运行。在同一应用程序的另一部分,它在读取文件时给出了相同的错误。即使已经授予了所有权限,我们也无法理解为什么代码会出现此错误。任何帮助,将不胜感激。