小程序无法加载

发布于 2024-08-12 03:33:45 字数 382 浏览 2 评论 0原文

在测试我们的用户验收测试设置时，我们收到一些报告，表明我们的 Web 应用程序中的 Java 小程序偶尔会无法加载。报错的envt是WinXP/IE6，java控制台没有发现错误。

显然我们想避免它。我们应该在这里检查什么样的事情？在我们的本地服务器上，一切似乎都很好。向现场人员发送问题需要一些周转时间，因此我希望尽可能多地涵盖可能的原因。

更多信息：我们有多个小程序，如果它们加载失败，则所有小程序都加载失败。 applet jar 文件的大小从 2MB 到 8MB 不等。有人告诉我，如果小程序尚未缓存，则似乎更有可能发生这种情况，即如果他们能够在给定机器上加载小程序一次，那么在该机器上进一步运行就会顺利进行。我想知道下载小程序时是否存在某种网络传输错误，但我不知道如何验证。

欢迎任何建议！

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丑疤怪 2024-08-19 03:33:45

故障机器上的 JRE 是否可能存在版本依赖性/不匹配？我遇到过一些需要 Java 6 的代码会导致没有 Java 6 的浏览器（Mac/Safari）崩溃的情况。

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美羊羊 2024-08-19 03:33:45

我在企业环境中使用小程序的经验通常会导致出现问题的三种路径之一。

客户端上的 JRE 版本不正确或冲突

客户端上的 JRE 损坏。

损坏的 IE 缓存

我发现卸载单个 JRE 通常是不够的，通常需要卸载计算机上的所有 JRE，然后仅重新安装您需要的 JRE。

另一个技巧是重置他们的 NT 配置文件。这对于纠正 IE 缓存问题也有奇效。我经常这样做，我已经记录了该过程。我通常在 JRE 卸载重新安装不起作用时执行此操作。

This can only be done by an administrator off the workstation. 
Meaning a user with Admin access cannot delete their own profile.

Before a user profile is deleted good practice is to back up the following folders found in: 
C:\Documents and Settings\<USERNAME>

Desktop
Favorites
My Documents

These folders could be copied to the user’s H:\ drive then can be copied back to the same folder
after the user logs back on to the system.

1.  Reboot the workstation. When you are back to the log on screen log in as the administrator.

2.  Right click on My Computer and choose properties.

3.  Choose the Advanced Tab then, under User Profiles, click on Settings.

4.  Highlight the user profile you would like to remove then click Delete. Close all the way out of the properties box.

5.  Go to Windows Explorer and navigate to C:\Documents and Settings. The folder named after the USERNAME
should have been removed. If it still remains manually delete the folder, 
then empty the recycling bin to make sure it’s been fully removed from the system.

6.  Reboot the workstation. At the log on prompt the user can log back in as themselves. 
This will create a brand new NT profile with their username. 
This will recreate certain OS settings as well as Internet Explorer settings 
that might have been corrupted in the old profile.

7.  At this point the three folders copied to the users H:\ drive can now be copied back to 
C:\Documents and Settings\<USERNAME>

My experience with applets in an enterprise environment usually leads down 1 of 3 paths in regards to problems.

Incorrect or conflicting JRE versions on the client

Corrupt JRE on the client.

Corrupt IE Cache

I have found uninstalling a single JRE is usually not enough, Its often required to uninstall all JRE's on the machine and reinstall only the ones you need.

Another trick is to reset their NT profile. This does wonders to correct IE cache issues as well. Done this so often I have documented the procedure. I generally perform this when a JRE uninstall reinstall doesnt work.

This can only be done by an administrator off the workstation. 
Meaning a user with Admin access cannot delete their own profile.

Before a user profile is deleted good practice is to back up the following folders found in: 
C:\Documents and Settings\<USERNAME>

Desktop
Favorites
My Documents

These folders could be copied to the user’s H:\ drive then can be copied back to the same folder
after the user logs back on to the system.

1.  Reboot the workstation. When you are back to the log on screen log in as the administrator.

2.  Right click on My Computer and choose properties.

3.  Choose the Advanced Tab then, under User Profiles, click on Settings.

4.  Highlight the user profile you would like to remove then click Delete. Close all the way out of the properties box.

5.  Go to Windows Explorer and navigate to C:\Documents and Settings. The folder named after the USERNAME
should have been removed. If it still remains manually delete the folder, 
then empty the recycling bin to make sure it’s been fully removed from the system.

6.  Reboot the workstation. At the log on prompt the user can log back in as themselves. 
This will create a brand new NT profile with their username. 
This will recreate certain OS settings as well as Internet Explorer settings 
that might have been corrupted in the old profile.

7.  At this point the three folders copied to the users H:\ drive can now be copied back to 
C:\Documents and Settings\<USERNAME>

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