Java 在我的计算机上更新JRE后小程序不工作

将Java更新到最新版本后，我有一个小程序停止工作 以下是错误：

Avertissement : un plug-in première génération est utilisé.
Ce plug-in est en phase d'abandon et sera supprimé de la prochaine version 
majeure de Java. Signalez toute difficulté technique que vous rencontrez 
avec le plug-in nouvelle génération sur http://bugs.sun.comPlug-in Java 1.7.0_25
Utilisation de la version JRE 1.7.0_25-b17 Java HotSpot(TM) Client VM
Répertoire d'origine de l'utilisateur = C:\Documents and Settings\jndayra
----------------------------------------------------
c:   effacer la fenêtre de la console
f:   finaliser les objets de la file d'attente de finalisation
g:   nettoyer la mémoire
h:   afficher ce message d'aide
l:   vider la liste des chargeurs de classes
m:   imprimer le relevé d'utilisation de la mémoire
o:   déclencher la journalisation
p:   recharger la configuration du proxy
q:   masquer la console
r:   recharger la configuration des règles
s:   vider les propriétés système et de déploiement
t:   vider la liste des threads
v:   vider la pile des threads
x:   effacer le cache de chargeurs de classes
0-5: fixer le niveau de trace à <n>
----------------------------------------------------

java.net.ConnectException: Connection refused: connect
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.getJSFileFromURL(Unknown Source)
at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.init(Unknown Source)
at com.sun.deploy.net.proxy.DynamicProxyManager.reset(Unknown Source)
at com.sun.deploy.net.proxy.DeployProxySelector.reset(Unknown Source)
at sun.plugin.AppletViewer.initEnvironment(Unknown Source)
at sun.plugin.AppletViewer.initEnvironment(Unknown Source)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(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.getInputStream(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)
at java.net.URLConnection.getContentType(Unknown Source)
at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.isSupportedINSFile(Unknown Source)
... 5 more

Charger : la classe UI.class est introuvable.
java.lang.ClassNotFoundException: UI.class
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadCode(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

我之前遇到过这个问题，我所做的是通过添加这一行来允许java.policy中的所有权限

   grant {
     permission java.security.AllPermission;
   };

---

这解决了以前的问题，但现在已不起作用。

这条线以上的所有内容都不相关：

java.net.ConnectException: Connection refused: connect

---

这仅仅意味着小程序在网络级别遇到了问题（而不是Java安全性）。它所连接的主机正在拒绝连接，这通常意味着在该

主机：端口上没有服务侦听

我将您的错误消息从法语翻译为英语，以提供更好的清晰度。这很可能会让你更快地得到答案。我们可以在什么URL上查看和测试小程序？“我所做的是在java.policy中允许所有权限”，这是一件非常危险且适得其反的事情。除非在极端情况下，否则不要乱动策略文件。不幸的是，我无法提供该应用程序的链接，它是在专用网络中使用的，因此它不应该暂停任何安全方面的威胁。

   grant {
     permission java.security.AllPermission;
   };

java.net.ConnectException: Connection refused: connect