为什么我的小程序得到一个java.security.AccessControlException：访问被拒绝（java.net.SocketPermission ...），我该如何避免？ [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

我们对于为什么我的客户端在Safari中遇到Java Security异常感到无知。有人可以帮助吗？

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

Windows中的Safari中可以正常发生异常。这涉及到Java小程序。在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.

以下是重现步骤：

1. 在Windows上打开Safari

1. Open Safari on Windows

点击此处： http://www.cengraving.com/s/item?itemId=CH003

点击自定义（屏幕底部）

Click "Customize" (at bottom of screen)

加载Instant Proof页面后，点击添加到购物车。

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

完整堆栈跟踪：

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

感谢您的回应。我没有奖赏赏金，因为答案都是有帮助的，没有一个解决问题。

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applet的数据传递给网页，然后执行AJAX调用以与服务器通信。不是最优雅的解决方案，当然，但迄今已经证明是有效的。

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.

尝试一下，lemme知道如果它适用于你。

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

再次感谢！

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