为什么我的小程序会出现 java.security.AccessControlException: access denied (java.net.SocketPermission ...)，我该如何避免呢? [英] Why does my applet get a java.security.AccessControlException: access denied (java.net.SocketPermission ...), and how can I avoid it?

问题描述

我们不知道为什么我的客户在 Safari 中遇到 Java 安全异常.有人可以帮忙吗?

We are clueless about why my client is encountering a Java Security exception in Safari. Could anyone help?

该异常在 Windows 上的 Safari 中可靠地发生.这涉及到一个 Java 小程序.Windows Vista 上的 Firefox 和 IE8 也会出现异常.

The exception occurs reliably in Safari on Windows. This involves a Java applet. The exception also occurs with Firefox and IE8 on Windows Vista.

以下是重现的步骤:

1. 在 Windows 上打开 Safari

1. Open Safari on Windows

点击这里:http://www.cengraving.com/s/item?itemId=CH003

点击自定义"(在屏幕底部)

Click "Customize" (at bottom of screen)

加载即时证明"页面后，点击添加到购物车".

After the "Instant Proof" page loads, click "Add to cart."

完整的堆栈跟踪:

java.security.AccessControlException: access denied (java.net.SocketPermission www.cengraving.com resolve)
    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.checkConnect(Unknown Source)
    at sun.plugin.security.ActivatorSecurityManager.checkConnect(Unknown Source)
    at java.net.InetAddress.getAllByName0(Unknown Source)
    at java.net.InetAddress.getAllByName(Unknown Source)
    at java.net.InetAddress.getAllByName(Unknown Source)
    at java.net.InetAddress.getByName(Unknown Source)
    at sun.net.www.http.HttpClient.New(Unknown Source)
    at sun.net.www.http.HttpClient.New(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
    at com.designapplet.a.f.a(Unknown Source)
    at com.designapplet.ui.c.a(Unknown Source)
    at com.designapplet.ui.c.for(Unknown Source)
    at com.designapplet.ui.DesignApplet.buy(Unknown Source)
    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.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.javascript.JSInvoke.invoke(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
    at sun.plugin.liveconnect.PrivilegedCallMethodAction.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.plugin.liveconnect.SecureInvocation$2.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.plugin.liveconnect.SecureInvocation.CallMethod(Unknown Source)
java.net.MalformedURLException: no protocol: 
    at java.net.URL.<init>(Unknown Source)
    at java.net.URL.<init>(Unknown Source)
    at java.net.URL.<init>(Unknown Source)
    at sun.plugin.liveconnect.SecureInvocation.checkLiveConnectCaller(Unknown Source)
    at sun.plugin.liveconnect.SecureInvocation.access$000(Unknown Source)
    at sun.plugin.liveconnect.SecureInvocation$2.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.plugin.liveconnect.SecureInvocation.CallMethod(Unknown Source)
java.net.MalformedURLException: no protocol: 
    at java.net.URL.<init>(Unknown Source)
    at java.net.URL.<init>(Unknown Source)
    at java.net.URL.<init>(Unknown Source)
    at sun.plugin.liveconnect.SecureInvocation.checkLiveConnectCaller(Unknown Source)
    at sun.plugin.liveconnect.SecureInvocation.access$000(Unknown Source)
    at sun.plugin.liveconnect.SecureInvocation$2.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.plugin.liveconnect.SecureInvocation.CallMethod(Unknown Source)

推荐答案

感谢您的回复.我没有奖励赏金，因为虽然答案都很有帮助，但没有一个能完全解决问题.

Thanks for the responses. I didn't award the bounty because while the answers were all helpful, none quite solved the problem.

最终，我通过将数据从小程序传递到网页，然后执行 AJAX 调用与服务器通信来解决问题.当然，这不是最优雅的解决方案，但迄今为止它已被证明是有效的.

Ultimately, I solved the problem by passing the data from the applet to the web page, then executing an AJAX call to communicate with the server. Not the most elegant solution, certainly, but it has proved effective thus far.

试试看，让我知道它是否适合你.

Try it out, and lemme know if it works for you.

再次感谢！

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