[英]Java Applet “ClassNotFoundException” on Firefox 52.4.1 - works on IE
我們需要在Firefox 52.4.1(與Java Applet兼容的最新版本)和Internet Explorer 11上運行使用Java 8 Applet(生病)的舊Web應用程序。
applet基於Java 8,由Apache Tomcat服務器分發。 它是簽名和混淆的(Proguard)。
用戶使用智能卡通過SSL相互身份驗證連接到網站(客戶端需要PKCS11模塊才能從智能卡獲取證書)。 SSL相互身份驗證也是使用Java Applet完成的。
所有證書都由在每個瀏覽器,Windows和Java證書庫中添加的autority簽名。
這里是HTML代碼:
<object classid='clsid:8AD9C840-044E-11D1-B3E9-00805F499D93' id='AsapiObject'>
<param name='archive' value='../../../applet/myapplet.jar'/>
<param name='code' value='main.package.Main'/>
<param name='name' value='My Applet'/>
<param name='mayscript' value='true'/>
<comment>
<applet id='AsapiApplet'
name='My Applet'
archive='../../../applet/myapplet.jar'
code='main.package.Main'
MAYSCRIPT="MAYSCRIPT">
</applet>
</comment>
</object>
(以下建議來自https://docs.oracle.com/javase/8/docs/technotes/guides/jweb/applet/using_tags.html#applet )
它在IE 11上工作正常,而不是在Mozilla Firefox 52.4.1上工作。 兩者都是相同的JRE。
在Mozilla Firefox 52.4.1上,我有一個Java異常:
java.lang.ClassNotFoundException: main.package.Main
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Thread.java:748)
在此異常之前,我有一個handshake failure exception
:
javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)
at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:2023)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1125)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:153)
at sun.plugin.PluginURLJarFileCallBack.connect(Unknown Source)
at sun.plugin.PluginURLJarFileCallBack.retrieve(Unknown Source)
at sun.net.www.protocol.jar.URLJarFile.retrieve(URLJarFile.java:205)
at sun.net.www.protocol.jar.URLJarFile.getJarFile(URLJarFile.java:71)
at sun.net.www.protocol.jar.JarFileFactory.get(JarFileFactory.java:109)
at sun.net.www.protocol.jar.JarURLConnection.connect(JarURLConnection.java:122)
at sun.plugin.net.protocol.jar.CachedJarURLConnection.connect(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection.getJarFileInternal(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection.getJarFile(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.getJarFile(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.access$800(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.ensureOpen(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$JarLoader.<init>(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.DeployURLClassPath.getLoader(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath.getLoader(Unknown Source)
at com.sun.deploy.security.DeployURLClassPath.getResource(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Thread.java:748)
我認為Firefox無法從智能卡正確導入客戶端證書。
編輯:Java控制台中還有另外兩個有趣的行:
security: Accessing keys and certificate in Mozilla user profile: null
security: JSS is not configured
通過增加調試模式( -Djavax.net.debug=all
),我看到:
IE瀏覽器 :
*** ServerHelloDone [read] MD5 and SHA1 hashes: len = 4 0000: 0E 00 00 00 .... ssl: KeyMgr: getting aliases: [XXXXXXX (verified: OK), YYYYYYYYYYYYYY] ssl: Ignoring alias XXXXXXX (1): key algorithm does not match ssl: Ignoring alias XXXXXXX: key algorithm does not match ssl: Ignoring alias XXXXXXX (2): key algorithm does not match ssl: KeyMgr: no matching alias found ssl: Ignoring alias XXXXXXX (1): key algorithm does not match ssl: Ignoring alias XXXXXXX: key algorithm does not match ssl: Ignoring alias XXXXXXX (2): key algorithm does not match ssl: KeyMgr: no matching alias found *** Certificate chain chain [0] = [ ...
火狐瀏覽器 :
*** ServerHelloDone [read] MD5 and SHA1 hashes: len = 4 0000: 0E 00 00 00 .... Warning: no suitable certificate found - continuing without client authentication *** Certificate chain <Empty> ***
我試過/檢查了很多東西:
plugins.click_to_play
( https://support.mozilla.org/fr/questions/933135 ) <applet>
檢查參數順序( Java Applet中使用<object>標記的ClassNotFoundException ) security.enterprise_roots.enabled
( https://support.umbrella.com/hc/en-us/articles/115000669728-Configuring-Firefox-to-use-the-Windows-Certificate-Store ) <embed>
或<object>
而不是<applet>
。 禁用一些安全檢查(CRL等)。
編輯 :根據JDK-6975851 , JSS doc , NSS版本 ,我已經構建了基於NSS 3.28.3的JSS_4_4_20170313和帶有VS2019 + Windows Kit 10工具和庫,Java 8的NSPR 4.13.1 。我已經安裝了DLL文件(jss4。 dz,libplc4.dll,libnspr4.dll,libplds4.dll)在Mozilla Firefox目錄中,jss4.jar在jre_path / lib / ext目錄中。 所有這些努力都沒有成功...... :(
我真的需要幫助。
任何想法? (我無法將applet切換到另一件事 - 我沒有這個選擇)
看起來問題出在您的網絡服務器提供https上。
一個隨機的谷歌拋出了Mozilla安全博客 。 默認情況下,在您使用的Firefox版本中禁用SHA-1(52)。 MD5是一種比SHA-1更差的哈希算法。
所以大概你應該至少更新網絡服務器。 如果你不顧一切地繼續使用本應該已經裝箱的軟件,那么我猜你在Firefox中可能仍然有配置選項,或者使用版本51,但我真的不推薦它。
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