SLF4J将异常记录为JSON或单行字符串

Question

null

import my.error.Error; // custom Error class
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;

@ControllerAdvice
public class CustomExceptionHandler extends ResponseEntityExceptionHandler {

  private final Logger logger = LoggerFactory.getLogger(this.getClass());
  private void logError(Error error, Exception ex){
    logger.error(String.format("id: %s, message: %s", error.getId(), ex.getMessage()), ex);
  }

}

最初，我试图通过更改src/main/java/resources中的logback.xml文件来改变日志记录行为。不幸的是，这似乎没有什么作用，所以我现在的假设是，我正在创建的CustomExceptionHandler正在推翻logback.xml文件中设置的规范。具体地说， 的 基于其他研究进行了更改。它正在尝试替换所有换行符。

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" debug="true">
    <include resource="org/springframework/boot/logging/logback/base.xml" />

    <appender name="FILE-ROLLING" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${LOG_PATH}/gateway.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}/archived/gateway/gateway.%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
            <!-- each archived file, size max 5MB -->
            <maxFileSize>5MB</maxFileSize>
            <!-- total size of all archive files, if total size > 10GB, it will delete old archived file -->
            <totalSizeCap>10GB</totalSizeCap>
            <!-- 30 days to keep -->
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d %p %c{1.} [%t] %m MULTIEXCEPTION %replace(%xException){'\n','\u2028'}%nopex%n</pattern>
        </encoder>
    </appender>

    <root level="INFO">
        <appender-ref ref="FILE-ROLLING" level="DEBUG" additivity="false"/>
    </root>

    <springProfile name="local">
        <logger name="my.gateway" level="TRACE" additivity="false">
            <appender-ref ref="CONSOLE" />
            <appender-ref ref="FILE-ROLLING" />
        </logger>
        <logger name="com.netflix" level="DEBUG" additivity="false">
            <appender-ref ref="CONSOLE" />
        </logger>
        <logger name="org.springframework" level="DEBUG" additivity="false">
            <appender-ref ref="CONSOLE" />
        </logger>
        <logger name="com" level="INFO" additivity="false">
            <appender-ref ref="CONSOLE" />
        </logger>
        <logger name="gov" level="INFO" additivity="false">
            <appender-ref ref="CONSOLE" />
        </logger>
        <logger name="org" level="INFO" additivity="false">
            <appender-ref ref="CONSOLE" />
        </logger>
    </springProfile>
</configuration>

• 日志文档
• SLF4J文档
• SLF4J手册
• 合并Logback和SLF4J
• 日志和SLF4J-structuredarguments
• 使用日志记录的JSON日志
• 将日志折叠-多行合并为一行
• Apache Log4j布局
• 因此：重写日志1
• 因此：重写日志2
• 因此：使Logback输出为JSON
• 格式SLF4J
• 使用Logback或log4j2将多行日志折叠为一个
• Baeldung Log4j2 JSON日志
• Java日志指南

Answer 1

我将LogerRror方法更改为：

import org.slf4j.MDC; // new import to add property
// ... other imports from before

  private void logError(Error error, Exception exception){
    MDC.put("error id", error.getId().toString()); // add a new property to the thread context
    LOGGER.error(exception.getMessage(), exception);
    MDC.clear(); // remove all new properties after logging the error
  }

我的新pom.xml文件依赖项：

  <dependencies>
    <!-- logging -->
    <dependency>
      <groupId>net.logstash.logback</groupId>
      <artifactId>logstash-logback-encoder</artifactId>
      <version>5.2</version>
    </dependency>

    <dependency>
      <groupId>ch.qos.logback.contrib</groupId>
      <artifactId>logback-jackson</artifactId>
      <version>0.1.5</version>
    </dependency>
    <!-- ch.qos.logback.contrib.json.classic.JsonLayout -->
    <dependency>
      <groupId>ch.qos.logback.contrib</groupId>
      <artifactId>logback-json-classic</artifactId>
      <version>0.1.5</version>
    </dependency>
    <!-- Other dependencies -->
    <!-- ... -->
    <!-- ... -->
  </dependencies>

新建logback.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <appender class="ch.qos.logback.core.rolling.RollingFileAppender" name="FILE-ROLLING">
    <!-- Old encoder is removed: 
    <encoder>
      <pattern>%d %p %c{1.} [%t] %m%n</pattern>
    </encoder>
    -->
    <file>${LOG_PATH}/data.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
      <fileNamePattern>${LOG_PATH}/archived/data/data.%d{yyyy-MM-dd}.%i.log.gz
      </fileNamePattern>
      <!-- each archived file, size max 10MB -->
      <maxFileSize>10MB</maxFileSize>
      <!-- total size of all archive files, if total size > 20GB, it will delete old archived file -->
      <maxHistory>60</maxHistory>
      <!-- 60 days to keep -->
      <totalSizeCap>20GB</totalSizeCap>
    </rollingPolicy>
    <!-- TODO : configure a pretty printer -->
    <encoder class="net.logstash.logback.encoder.LogstashEncoder">
      <provider class="net.logstash.logback.composite.loggingevent.ArgumentsJsonProvider"/>
    </encoder>
  </appender>

  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
    <!-- TODO : configure a pretty printer -->
    <encoder class="net.logstash.logback.encoder.LogstashEncoder">
      <provider class="net.logstash.logback.composite.loggingevent.ArgumentsJsonProvider"/>
    </encoder>
  </appender>
  <!-- The base logback configuration is removed, but note that this will also remove the default Spring start-up messages, so those need to be added back into the <root> 
  <include resource="org/springframework/boot/logging/logback/base.xml"/>
  -->
  <root level="INFO">
    <appender-ref ref="FILE-ROLLING"/>
    <appender-ref ref="CONSOLE"/> <!-- This adds Spring start-up messages back into the logs -->
  </root>
  <springProfile name="local">
    <logger additivity="false" level="TRACE" name="org.springframework.web">
      <appender-ref ref="CONSOLE"/>
    </logger>
  </springProfile>
  <springProfile name="dev">
    <logger additivity="false" level="DEBUG" name="org.springframework">
      <appender-ref ref="FILE-ROLLING"/>
    </logger>
  </springProfile>
  <springProfile name="prod">
    <logger additivity="false" level="DEBUG" name="my.app.path">
      <appender-ref ref="FILE-ROLLING"/>
    </logger>
    <logger additivity="false" level="DEBUG" name="org.jooq">
      <appender-ref ref="FILE-ROLLING"/>
    </logger>
    <logger additivity="false" level="DEBUG" name="org.springframework">
      <appender-ref ref="FILE-ROLLING"/>
    </logger>
  </springProfile>
</configuration>