AccessControlException: 访问被拒绝 - FilePermission [英] AccessControlException: access denied - FilePermission

问题描述

我正在使用 JRE7.我已经使用 jarsigner 对 jar 文件进行了签名.但我仍然得到例外

I am using JRE7. I have signed the jar file using jarsigner. But still I get the exception

java.security.AccessControlException: access denied ("java.io.FilePermission" 
    "C:\Program Files\Java\jre7\lib\ext\Cert.P12" "read") 

我正在尝试读取存储在该目录中的 Cert.P12.

I am trying to read the Cert.P12 stored in that directory.

我使用 keytool 生成了证书并对 jar 进行了签名.当浏览器提示我时，我接受了证书.是不是因为它不是真正的证书我收到此错误?

I generated certificate using keytool and signed the jar. When the browser prompted me i accepted the certificate. Is it because it is not a real certificate I am getting this error?

这个读取文件的代码是一个小程序代码.

This code to read the file is an applet code.

http://www-personal.umich.edu/~lsiden/tutorials/signed-applet/signed-applet.html 提到如果它被签名，错误就会消失.但它不适合我.

http://www-personal.umich.edu/~lsiden/tutorials/signed-applet/signed-applet.html mentions that if it is signed the error will vanish. But it did not for me.

推荐答案

如果，即使在签署小程序后，您仍然收到 SecurityException，请尝试将代码作为特权代码运行:

If, even after signing the applet, you still get a SecurityException, try running the code as privileged code:

AccessController.doPrivileged(new PrivilegedAction() {
    public Object run() {
        // perform the security-sensitive operation here
        return null;
    }
});

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