控制台别让因为文件的小程序我跑 [英] Console don't let my applet run because of a file

问题描述

我在applet工作。它的工作原理完全与Eclipse但是当我尝试从控制台运行它给了我这个堆栈跟踪：

I am working in an applet. It works perfect with Eclipse but when I try to run from Console it gives me this stack trace:

C:\Course Technology\src>appletviewer TestJAlienHunt.html

Path for file entered D:\Course Technology\AssignmentFinal\scoreFile.txt java.security.AccessControlException: access denied ("java.io.FilePermission" "D:\Course Technology\AssignmentFinal\scoreFile.txt" "read")
    at java.security.AccessControlContext.checkPermission(AccessControlContext.java:366)
    at java.security.AccessController.checkPermission(AccessController.java:555)
    at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
    at java.lang.SecurityManager.checkRead(SecurityManager.java:888)
    at sun.nio.fs.WindowsPath.checkRead(WindowsPath.java:792)
    at sun.nio.fs.WindowsFileSystemProvider.checkAccess(WindowsFileSystemProvider.java:360)
    at java.nio.file.Files.exists(Files.java:2311)
    at ReadFile.fileExists(ReadFile.java:47)
    at JAlienHunt.readScore(JAlienHunt.java:187)
    at JAlienHunt.init(JAlienHunt.java:73)
    at sun.applet.AppletPanel.run(AppletPanel.java:434)
    at java.lang.Thread.run(Thread.java:722)

该文件有权读写，为什么我收到这个？

The file has permission to read and write, why I am getting this?

推荐答案

这是小应用程序需要由您进行数字签名和最终用户的信赖才可以在访问本地文件系统中的用户的计算机。

An applet needs to be digitally signed by you and trusted by the end user before it can access the local file system on the user's computer.

我想强调的用户的电脑的，因为这是任何文件将等同于。没有为得到一个文件指向服务器的选项。如果这是只读的，服务器托管资源，通过网​​址。

I highlight user's computer because that is where any File will equate to. There is no option for getting a File pointing to the server. If this is read only and the server hosts the resource, access it by URL.

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