如何不在 Logback 中记录特定类型的异常?

问题描述

如何配置 Logback 以忽略特定类型异常的日志记录?

How do I configure Logback to ignore logging on exceptions of a particular type?

推荐答案

你可以用一个简单的EvaluatorFilter:

<filter class="ch.qos.logback.core.filter.EvaluatorFilter">
    <evaluator>
        <expression>java.lang.RuntimeException.class.isInstance(throwable)</expression>
    </evaluator>
    <onMatch>DENY</onMatch>
</filter>

请注意，您的 pom.xml 中还需要以下依赖项:

Please note that you need the following dependency in your pom.xml as well:

<dependency>
    <groupId>org.codehaus.janino</groupId>
    <artifactId>janino</artifactId>
    <version>2.5.16</version>
</dependency>

另一种可能的解决方案是自定义 Filter 实现:

Another possible solution is a custom Filter implementation:

import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.classic.spi.IThrowableProxy;
import ch.qos.logback.classic.spi.ThrowableProxy;
import ch.qos.logback.core.filter.Filter;
import ch.qos.logback.core.spi.FilterReply;

public class SampleFilter extends Filter<ILoggingEvent> {

    private Class<?> exceptionClass;

    public SampleFilter() {
    }

    @Override
    public FilterReply decide(final ILoggingEvent event) {
        final IThrowableProxy throwableProxy = event.getThrowableProxy();
        if (throwableProxy == null) {
            return FilterReply.NEUTRAL;
        }

        if (!(throwableProxy instanceof ThrowableProxy)) {
            return FilterReply.NEUTRAL;
        }

        final ThrowableProxy throwableProxyImpl =
            (ThrowableProxy) throwableProxy;
        final Throwable throwable = throwableProxyImpl.getThrowable();
        if (exceptionClass.isInstance(throwable)) {
            return FilterReply.DENY;
        }

        return FilterReply.NEUTRAL;
    }

    public void setExceptionClassName(final String exceptionClassName) {
        try {
            exceptionClass = Class.forName(exceptionClassName);
        } catch (final ClassNotFoundException e) {
            throw new IllegalArgumentException("Class is unavailable: "
                    + exceptionClassName, e);
        }
    }
}

使用适当的配置:

<filter class="hu.palacsint.logbacktest.SampleFilter">
    <exceptionClassName>java.lang.Exception</exceptionClassName>
</filter>

在 TurboFilter 你直接得到了抛出的Throwable 实例，所以你可以调用isInstance 方法，无需手动将 IThrowableProxy 转换为 ThrowableProxy.

In a TurboFilter you get the thrown Throwable instance directly, so you can call the isInstance method without manually casting the IThrowableProxy to ThrowableProxy.

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