Java-Tomcat:在不重新启动服务器的情况下重新加载context.xml [英] Java - Tomcat: Reload context.xml without restarting server

问题描述

我正在使用spring mvc和tomcat作为服务器.我希望能够更改自动装配的jndi字段(作为String):

I'm using spring mvc and tomcat as a server. I want to be able to change a jndi field that is Autowired(as String):

<jee:jndi-lookup id="someMessage" jndi-name="someMessage"/>

在我的其中一项服务中，

引用了Tomcat的conf/context.xml，它看起来像这样:

in one of the my services, that is referenced to conf/context.xml of Tomcat, that looks something like this:

<Environment name="someMessage" value="Change this." type="java.lang.String" />. 

但是，当我更改context.xml的值时，除非我重新启动服务器，否则此更改不会反映在Spring管理的服务上.是否有任何反映而无需重新启动或重新部署战争的变化?我知道有一种解决方案，可以在属性文件之一中包含这样的动态字段，然后使用commons配置库重新加载更改，但是我正在寻找一种解决方案，以将该字段保留在conf/context.xml中.

However, when I change the value on context.xml, this change is not reflected on my service managed by spring, unless I restart server. Is there anyway to reflect this change without restarting or redeploying war? I know there is a solution to include such a dynamic field in one of properties file and then use commons configuration library to reload the changes, but I'm looking for a solution to keep this field on my conf/context.xml...

推荐答案

据我所知，如果将其放入tomcat主页的conf/context.xml中是不可能的，如以下文档所示:

As far as I know, it's impossible if you put it into the conf/context.xml of your tomcat home as the following doc shows:

• StandardContext .html#reload():如果context.xml已更改，则应停止此Context并创建(并启动)新的Context实例. -即无法通过原始上下文实现
• 重新加载现有的应用程序:重新加载现有的应用程序Web应用程序，以反映/WEB-INF/classes或/WEB-INF/lib的内容中的更改. -即不反映context.xml的更改

• StandardContext.html#reload(): If the context.xml has changed, you should stop this Context and create (and start) a new Context instance instead. -- i.e. can't achieve by original context
• Reload Existing App: Reload an existing web application, to reflect changes in the contents of /WEB-INF/classes or /WEB-INF/lib. -- i.e. not reflect the change of context.xml

但是您可以定义应用程序的/META-INF/context.xml，它将打包到war中，并且可以在不重新启动服务器的情况下替换war.

But you can define your app's /META-INF/context.xml, which will be packed into war and you can replace war without restart server.

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