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如何以编程方式告诉 Logback 重新加载配置

发布于 2025-01-06 00:16:25 字数 116 浏览 2 评论 0原文

我知道有一个 reloadDefaultConfiguration() jmx 操作，但是如果没有获取 MBean 实例并调用此操作，是否有 Logback api 来重新加载默认配置（可以选择指定日志配置文件路径）？

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咽泪装欢 2025-01-13 00:16:25

这是 JMXConfigurator.reloadDefaultConfiguration() 的源代码：

public void reloadDefaultConfiguration() throws JoranException {
  ContextInitializer ci = new ContextInitializer(loggerContext);
  URL url = ci.findURLOfDefaultConfigurationFile(true);
  loggerContext.reset();
  ci.configureByResource(url);
}

在需要的地方运行此代码怎么样？

唯一的问题是 loggerContext 变量。您可以使用以下方式获取它：

(LoggerContext)LoggerFactory.getILoggerFactory()

不幸的是，似乎没有精心设计的 API 可以执行此操作，那么如何提高问题？您还知道 Logback 具有内置的自动刷新功能吗？

This is the source code of JMXConfigurator.reloadDefaultConfiguration():

public void reloadDefaultConfiguration() throws JoranException {
  ContextInitializer ci = new ContextInitializer(loggerContext);
  URL url = ci.findURLOfDefaultConfigurationFile(true);
  loggerContext.reset();
  ci.configureByResource(url);
}

What about just running this code wherever you need it?

The only problem is the loggerContext variable. You can obtain it using:

(LoggerContext)LoggerFactory.getILoggerFactory()

Unfortunately it doesn't look like there is well-factored API to do this, what about raising an issue? Also are you aware that Logback has a built-in auto-refreshing feature?

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肩上的翅膀 2025-01-13 00:16:25

我为此目的使用了以下代码：

public static void reloadLogger() {
    LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();

    ContextInitializer ci = new ContextInitializer(loggerContext);
    URL url = ci.findURLOfDefaultConfigurationFile(true);

    try {
        JoranConfigurator configurator = new JoranConfigurator();
        configurator.setContext(loggerContext);
        loggerContext.reset();
        configurator.doConfigure(url);
    } catch (JoranException je) {
        // StatusPrinter will handle this
    }
    StatusPrinter.printInCaseOfErrorsOrWarnings(loggerContext);
}

I used the following code for this purpose:

public static void reloadLogger() {
    LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();

    ContextInitializer ci = new ContextInitializer(loggerContext);
    URL url = ci.findURLOfDefaultConfigurationFile(true);

    try {
        JoranConfigurator configurator = new JoranConfigurator();
        configurator.setContext(loggerContext);
        loggerContext.reset();
        configurator.doConfigure(url);
    } catch (JoranException je) {
        // StatusPrinter will handle this
    }
    StatusPrinter.printInCaseOfErrorsOrWarnings(loggerContext);
}

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日暮斜阳 2025-01-13 00:16:25

对于 logback 1.5.x 或更高版本，以下内容应该有效

    var loggerCtx = (LoggerContext) LoggerFactory.getILoggerFactory();
    loggerCtx.reset();
    var ci =  new ContextInitializer(loggerCtx);
    ci.autoConfig();

With logback 1.5.x or later, the following should work

    var loggerCtx = (LoggerContext) LoggerFactory.getILoggerFactory();
    loggerCtx.reset();
    var ci =  new ContextInitializer(loggerCtx);
    ci.autoConfig();

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