applet错误:java.security.AccessControlException: access denied

snowdot23 2005-01-26 11:51:13

写了个applet
提示
java.security.AccessControlException: access denied (java.io.FilePermission C:\Documents and Settings\Administrator\桌面\HA-flashfxp30b1015final-cr-LDR.zip read)

at java.security.AccessControlContext.checkPermission(Unknown Source)

at java.security.AccessController.checkPermission(Unknown Source)

at java.lang.SecurityManager.checkPermission(Unknown Source)

at java.lang.SecurityManager.checkRead(Unknown Source)

at java.io.File.length(Unknown Source)

at com.xxy.jupload.FileUpload.upload(FileUpload.java:65)

at com.xxy.jupload.JUploadPanel.upload(JUploadPanel.java:559)

at com.xxy.jupload.JUploadApplet.upload(JUploadApplet.java:166)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at sun.plugin.com.MethodDispatcher.invoke(Unknown Source)

at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)

at sun.plugin.com.DispatchImpl$2.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at sun.plugin.com.DispatchImpl.invoke(Unknown Source)

java.lang.Exception: java.security.AccessControlException: access denied (java.io.FilePermission C:\Documents and Settings\Administrator\桌面\HA-flashfxp30b1015final-cr-LDR.zip read)

at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)

at sun.plugin.com.DispatchImpl$2.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at sun.plugin.com.DispatchImpl.invoke(Unknown Source)

环境如下:Java(TM) Plug-in: 版本 1.4.2_0,window 2000pro

但是我栽jre1.4.0下可以使用,没有这样得安全提示,(签过名),文件

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drugon 2005-01-26

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这是IE本身的限制，你除非修改IE的安全属性就差不多。

drugon 2005-01-26

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IE只能访问一定目录下的文件，不是可以访问所有的文件，Applet没有那么高的权限。

GJA106 2005-01-26

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客户端权限问题
1.通过配置安全配置文件来解决。.java.policy文件。

/* AUTOMATICALLY GENERATED ON Fri Jun 06 21:53:57 CST 2003*/
/* DO NOT EDIT */

grant {
permission java.util.PropertyPermission "user.dir", "read";
permission java.util.PropertyPermission "user.home", "read";
permission java.util.PropertyPermission "java.home", "read";
permission java.util.PropertyPermission "java.class.path", "read";
permission java.util.PropertyPermission "user.name", "read";
permission java.lang.RuntimePermission "accessClassInPackage.sun.misc";
permission java.lang.RuntimePermission "accessClassInPackage.sun.audio";
permission java.lang.RuntimePermission "modifyThread";
permission java.lang.RuntimePermission "modifyThreadGroup";
permission java.lang.RuntimePermission "loadLibrary.*";
permission java.io.FilePermission "<<ALL FILES>>", "read";
permission java.io.FilePermission "${user.dir}${/}jmf.log", "write";
permission java.io.FilePermission "${user.home}${/}.JMStudioCfg", "write";
permission java.net.SocketPermission "*", "connect,accept";
permission java.io.FilePermission "C:\WINNT\TEMP\*", "write";
permission java.io.FilePermission "C:\WINNT\TEMP\*", "delete";
permission java.awt.AWTPermission "showWindowWithoutWarningBanner";
permission javax.sound.sampled.AudioPermission "record";
permission java.net.SocketPermission "-", "listen";
permission java.net.SocketPermission "-", "accept";
permission java.net.SocketPermission "-", "connect";
permission java.net.SocketPermission "-", "resolve";
permission java.security.AllPermission;
};

grant signedBy "saili" {
permission java.net.SocketPermission "*:1024-65535", "connect,accept,resolve";
permission java.net.SocketPermission "*:80", "connect";
permission java.net.SocketPermission "-", "listen, accept, connect, listen, resolve", signedBy "ganja";
permission java.net.SocketPermission "-", "accept";
permission java.net.SocketPermission "-", "connect";
permission java.net.SocketPermission "-", "resolve";
permission java.security.AllPermission;
};

2.通过签名来解决。
网上搜吧。

snowdot23 2005-01-26