Question

我要将我的java应用程序放入docker中。但基于我们公司的测井设施，我必须使用fluentd收集容器＆＃39;登录。这要求我将java stacktraces放入一行日志中。

我做了以下工作，它在某些情况下有效但彼此失败。

package com.alex;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.zip.DataFormatException;

public class Main {
    private static final Logger logger = LoggerFactory.getLogger(Main.class);

    public static void alexExc() throws Exception {
        throw new Exception("hello");
    }

    public static void main(String[] args) throws Exception {
        try {
            alexExc();
        } catch (Throwable t) {
            logger.error("oops", t);
        }

        throw new DataFormatException("invalid data format");
    }
}

以下是我的转换器用我指定的转换器替换分隔符＆＃34;＃012＆＃34;

package com.alex;

import ch.qos.logback.classic.pattern.ThrowableProxyConverter;
import ch.qos.logback.classic.spi.IThrowableProxy;
import ch.qos.logback.core.CoreConstants;

public class OneLineStackTraceConverter extends ThrowableProxyConverter {
    protected String throwableProxyToString(IThrowableProxy tp) {
        String originalStackTrace = super.throwableProxyToString(tp);

        return originalStackTrace.replace(CoreConstants.LINE_SEPARATOR, " #012");
    }
}

然后是我的logback配置：

<?xml version="1.0" encoding="UTF-8" ?>
<configuration scan="true" scanPeriod="30 seconds">
    <conversionRule  conversionWord="ex"
            converterClass="com.alex.OneLineStackTraceConverter" />

    <appender name="INFO_FILE"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>/logs/loggingmdc/info.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>/logs/loggingmdc/info.log.%i</fileNamePattern>
            <minIndex>1</minIndex>
            <maxIndex>5</maxIndex>
        </rollingPolicy>
        <triggeringPolicy
                class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>1GB</maxFileSize>
        </triggeringPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %le %logger{0}: ## %msg\n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <appender name="DEBUG_FILE"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>/logs/loggingmdc/debug.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>/logs/loggingmdc/debug.log.%i</fileNamePattern>
            <minIndex>1</minIndex>
            <maxIndex>5</maxIndex>
        </rollingPolicy>
        <triggeringPolicy
                class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>1GB</maxFileSize>
        </triggeringPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %le %logger{0}: ## %msg %ex\n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <appender name="ERROR_FILE"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>/logs/loggingmdc/error.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>/logs/loggingmdc/error.log.%i</fileNamePattern>
            <minIndex>1</minIndex>
            <maxIndex>5</maxIndex>
        </rollingPolicy>
        <triggeringPolicy
                class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>1GB</maxFileSize>
        </triggeringPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %le %logger{0}: ## %msg %ex\n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <appender name="THIRD_PARTY_FILE"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>/logs/loggingmdc/thirdparty.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>/logs/loggingmdc/thirdparty.log.%i</fileNamePattern>
            <minIndex>1</minIndex>
            <maxIndex>5</maxIndex>
        </rollingPolicy>
        <triggeringPolicy
                class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>1GB</maxFileSize>
        </triggeringPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %le %logger{0}: ## %msg %ex\n</pattern>
        </encoder>
    </appender>

    <root level="INFO">
        <appender-ref ref="THIRD_PARTY_FILE"/>
    </root>
    <logger name="com.alex" level="DEBUG" additivity="false">
        <appender-ref ref="INFO_FILE"/>
        <appender-ref ref="DEBUG_FILE"/>
        <appender-ref ref="ERROR_FILE"/>
    </logger>
</configuration>

正如您在我的回溯配置中所看到的，我添加了conversionRule来指定记录事件中的异常是使用我的OneLineStackTraceConverter。

如果我在编码器的每个模式中包含%ex，它都可以使用
如果我不在模式中包含%ex，它就不起作用。为什么？如果用户忘记在其模式中包含%ex，我是否还有其他一些convertWord用于该异常？
最后DataFormatException没有进入日志文件，它出现在控制台中，我也希望它转到日志文件。我怎么能这样做呢？

感谢。

Answer 1

如果我不在模式中包含％ex，它就不起作用。为什么呢？

因为您声明了转换字= ex。如果你不使用它，Logback不知道你的想法，所以它什么都不做。将此与在代码中声明变量而不使用它进行比较，您应该能够理解。

最后一次DataFormatException没有转到日志文件

因为您的代码没有记录。如果在代码中抛出异常，Logback（或者你的SLF4J）将不会自动捕获并记录它。

通过docker

1 个答案: