Tomcat context.xml 文件，有层次吗? [英] Tomcat context.xml files, is there a hierarchy?

问题描述

我正在尝试在我在 Tomcat5 上运行的应用程序之一中使用符号链接.感谢另一个StackOverflow问题的帮助，我能够做到通过在

I am trying to use symbolic links in one of the applications I have running on Tomcat5. Thanks to some help from another StackOverflow question I was able to do it by creating a context.xml file in

/...myapplication/META-INF/context.xml

/...myapplication/META-INF/context.xml

我现在正在尝试在生产服务器上实现这一点.但是，还有其他应用程序在其上运行.还有另一个上下文文件

I am now trying to implement this on a production server. However, there are other applications running on it. And there is another context file

/...tomcat/conf/context.xml

/...tomcat/conf/context.xml

在我看来，这些是在服务器范围内为所有应用程序设置配置.如果我在 conf/context.xml 文件中允许链接，我的符号链接就起作用了.如果我不允许 conf/context.xml 中的链接，即使我在 META-INF/context.xml 中允许它们，我的应用程序的符号链接也不起作用

It seems to me these are setting configurations server-wide to all applications. If I allowLinks in the conf/context.xml file, my symbolic links work. If I don't allowLinks in conf/context.xml, my application's symbolic links do not work, even though I have allowed them in the META-INF/context.xml

我的问题是，conf/context.xml 控制所有应用程序吗?如果我希望符号链接仅在一个应用程序中工作，是否需要删除 conf/context.xml 并为每个应用程序创建新的上下文文件?或者有没有办法只允许我的应用程序中的符号链接?

My question is, does the conf/context.xml control all applications? If I want symbolic links to work only in one application, do I need to remove the conf/context.xml and create new context files for each application? Or is there a way I can allow symbolic links in myapplication only?

推荐答案

参见 我的回答 对哪个 Tomcat 5 上下文文件优先"问题.

关于您的特定 allowLinks 问题，conf/context.xml 中的值默认优先.如果你在 conf/context.xml 中什么也没说，默认值是 allowLinks="false" 在您的 conf/context.xml 中.

Regarding your specific allowLinks question, the value in conf/context.xml takes precedence by default. If you say nothing in your conf/context.xml, the default value is allowLinks="false" in your conf/context.xml.

如果您只想为您的 myapplication 更改它，请尝试在您的 META 中说 <Context allowLinks="true" ...>-INF/context.xml 将不起作用，因为通常 conf/context.xml 设置将优先.

If you want to change it only for your myapplication, trying to say <Context allowLinks="true" ...> in your META-INF/context.xml will have no effect because normally the conf/context.xml setting will take precedence.

但是，如果您在 META-INF/context 中说 <Context allowLinks="true" override="true" ...> .xml，那么您在 META-INF/context.xml 中的所有 设置将是最高优先级，覆盖任何内容在 conf/context.xml.

But, if you say <Context allowLinks="true" override="true" ...> in your META-INF/context.xml, then all your <Context> settings in META-INF/context.xml will be highest precedence, overriding anything in conf/context.xml.

最后，我建议使用 conf/Catalina/localhost/myapplication.xml 文件而不是 myapplication/WEB-INF/context.xml 文件.这种技术意味着您可以保持 WEB-INF 的内容干净，这是您的 web 应用程序的内脏——我不喜欢冒险在我的 web 应用程序内脏.:-)

Finally, instead of a myapplication/WEB-INF/context.xml file, I recommend using a conf/Catalina/localhost/myapplication.xml file. This technique means you can keep the contents of your WEB-INF clean, which is the guts of your webapp -- I don't like to risk mucking about in the guts of my webapp. :-)

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