更新 Java 导致小程序停止工作 - 未找到 testJava2_1/TestVMApplet.class
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Updating Java causes applets to stop working - testJava2_1/TestVMApplet.class not found
提问by Richard
Hei,
嘿，
After I updated my java version from 6u31 to 7u4 on a windows 7-64 bits, applets stopped working. I use java-32 bits and the browsers are also 32 bits(tried IE9 and Firefox 12.0) , and the only cause was updating the java. I used the test from http://www.java.com/en/download/testjava.jsp, and got this as result:
在 Windows 7-64 位上将 Java 版本从 6u31 更新为 7u4 后，小程序停止工作。我使用 java-32 位，浏览器也是 32 位（尝试过 IE9 和 Firefox 12.0），唯一的原因是更新 java.lang. 我使用了来自http://www.java.com/en/download/testjava.jsp的测试，结果如下：
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.definition value null
security: property package.definition new value com.sun.javaws
security: property package.definition value com.sun.javaws
security: property package.definition new value com.sun.javaws,com.sun.deploy
security: property package.definition value com.sun.javaws,com.sun.deploy
security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.mozilla.jss
security: property package.definition value com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.mozilla.jss
basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@1cc55fb
basic: Plugin2ClassLoader.addURL parent called for http://www.java.com/applet/TestVM2-test.jar
network: Cache entry not found [url: http://www.java.com/applet/TestVM2-test.jar, version: null]
network: Connecting http://www.java.com/applet/TestVM2-test.jar with proxy=DIRECT
network: Connecting http://www.java.com:80/ with proxy=DIRECT
network: Cache entry not found [url: http://www.java.com/applet/TestVM2-test.jar, version: null]
network: Cache entry not found [url: http://www.java.com/applet/TestVM2-test.jar, version: null]
network: Connecting http://www.java.com/applet/TestVM2-test.jar with proxy=DIRECT
network: Connecting http://www.java.com:80/ with proxy=DIRECT
network: Connecting http://www.java.com/applet/TestVM2-test.jar with proxy=DIRECT
network: Connecting http://www.java.com:80/ with proxy=DIRECT
java.net.SocketException: Permission denied: connect
bla bla bla
network: Cache entry not found [url: http://www.java.com/applet/TestVM2-test.jar, version: null]
network: Connecting http://www.java.com/applet/TestVM2-test.jar with proxy=DIRECT
network: Connecting http://www.java.com:80/ with proxy=DIRECT
network: Cache entry not found [url: http://www.java.com/applet/TestVM2-test.jar, version: null]
network: Cache entry not found [url: http://www.java.com/applet/TestVM2-test.jar, version: null]
network: Connecting http://www.java.com/applet/TestVM2-test.jar with proxy=DIRECT
network: Connecting http://www.java.com:80/ with proxy=DIRECT
network: Connecting http://www.java.com/applet/TestVM2-test.jar with proxy=DIRECT
network: Connecting http://www.java.com:80/ with proxy=DIRECT
java.net.SocketException: Permission denied: connect
bla bla bla
network: Cache entry not found [url: http://www.java.com/applet/, version: null]
network: Cache entry not found [url: http://www.java.com/applet/testJava2_1/TestVMApplet.class, version: null]
network: Connecting http://www.java.com/applet/testJava2_1/TestVMApplet.class with proxy=DIRECT
network: Connecting http://www.java.com:80/ with proxy=DIRECT
network: Cache entry not found [url: http://www.java.com/applet/testJava2_1/TestVMApplet/class.class, version: null]
network: Connecting http://www.java.com/applet/testJava2_1/TestVMApplet/class.class with proxy=DIRECT
network: Connecting http://www.java.com:80/ with proxy=DIRECT
java.lang.ClassNotFoundException: testJava2_1.TestVMApplet.class
bla bla bla
basic: load: class testJava2_1/TestVMApplet.class not found.
java.lang.ClassNotFoundException: testJava2_1.TestVMApplet.class
bla bla bla
Ignored exception: java.lang.ClassNotFoundException: testJava2_1.TestVMApplet.class
basic: Dialog type is not candidate for embedding
basic: Removed progress listener: sun.plugin.util.ProgressMonitorAdapter@1cc55fb
basic: Loading Java Applet Failed...
security: Reset deny session certificate store
I already tried a lot of different alternatives like disabling the firewall, disabling the next generation plug-in on Java Control Panel, clearing the cache, uninstalling and re-installing (both JRE and JDK), playing with mixed mode security verification, and maybe some more I don't remember. I have no idea what else I could try to make it work.. Anyone experienced the same and solved it?
我已经尝试了很多不同的替代方法，例如禁用防火墙、禁用 Java 控制面板上的下一代插件、清除缓存、卸载和重新安装（JRE 和 JDK）、使用混合模式安全验证，也许还有一些我不记得了。我不知道还有什么我可以尝试让它工作的..有没有人经历过同样的事情并解决了它？
Ah, as company policy we have to stick with the latest version if possible due to security updates.
啊，作为公司政策，由于安全更新，我们必须尽可能坚持使用最新版本。
采纳答案by Richard
Ok, the problem was that I was connected on VPN (CISCO) while accessing pages with java. Since Java 7, there is a problem due to Ipv6 (http://jonathangiles.net/blog/?p=1126). So I disabled it from the VPN connection and added this line to the java runtime parameters: -Djava.net.preferIPv4Stack=true
好的，问题是我在使用java访问页面时连接了VPN（CISCO）。从 Java 7 开始，由于 Ipv6 (http://jonathangiles.net/blog/?p=1126) 存在问题。所以我从 VPN 连接中禁用了它，并将这一行添加到 java 运行时参数中：-Djava.net.preferIPv4Stack=true
Now it's working fine.
现在它工作正常。
