使用siftingappender或gsiftingappender访问MDC中的多个值

问题描述

我有一个siftingappender，用于在mdc中自定义文件附加器.问题是我无法从配置中访问多个值.

I have a siftingappender that i use for a key in mdc to customize the file appenders. The problem is i cannot access multiple values from the configuration.

是否可以访问MDC中存在的2个或更多密钥?

Is there a way to access 2 or more keys that exists in MDC?

推荐答案

我遇到了同样的问题，看着这个类，看来不可能使用两个区分键.然后，我使用的解决方案是在会话"开始时设置一个包含此值的组合的属性:

I had the same problem, and looking at the class it appeared it wasn't possible to use two discriminator keys. The solution I used was then to set a property containing the combination of this values at the beginning of the "session" :

String value1 = "a variable";
String username = "the username";
MDC.put("myDiscriminatingValue", value1 + username);

然后您只需要在logback.xml中输入"myDiscriminationValue"作为区别值.

and then you just have to put "myDiscriminatingValue" in logback.xml as a discriminating value.

一种更优雅的实现方法是实现自己的Discriminator类，而不是MDCBasedDicriminator.

A more elegant way to achieve it would be to implement your own Discriminator class instead of MDCBasedDicriminator.

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