Spring boot 日志记录-如何删除跟踪日志前缀

php小编子墨为您带来spring boot日志记录的相关内容。在使用spring boot进行应用开发时，我们经常会遇到跟踪日志前缀的问题，这些前缀会影响日志的可读性和美观性。本文将向您介绍如何删除跟踪日志前缀，让您的日志更加清晰明了。无论您是初学者还是有一定经验的开发者，本文都将对您有所帮助。接下来，让我们一起来探索这个问题的解决方案吧！

问题内容

1.message log
{"@timestamp":"2023-12-18t22:36:22.449z","severity":"info","service":"mopservice-jcr-svc","traceid":"afa32548086d2994","spanid":"afa32548086d2994","user-id":"","iv-user":"","customer-number":"","exportable":"","pid":"1","thread":"http-nio-8443-exec-1","class":"o.a.c.m.jmx.instrumentationmanagerimpl","message":"registering mbean org.apache.cxf:bus.id=cxf619002012,type=performance.counter.server,service=\"{http://www.canadapost.ca/ws/payment/methodsofpayment/soap/2017/10}methodsofpaymentporttypeservice\",port=\"methodsofpaymentporttypeport\",operation=\"getallowedmethodsofpayment\": org.apache.cxf.management.counters.responsetimecounter@99c7fd6"}

2.trace log - message field contains trace information without any actual message.
{"@timestamp":"2023-12-18t22:36:21.076z","severity":"info","service":"mopservice-jcr-svc","traceid":"afa32548086d2994","spanid":"-5697962974162517179","user-id":"","iv-user":"","customer-number":"","exportable":"","pid":"1","thread":"http-nio-8443-exec-1","class":"c.c.s.config.sleuth.loggingspanreporter","message":"{\"traceid\":\"afa32548086d2994\",\"parentid\":\"57583fd122326bb7\",\"id\":\"b0ecc4dd35b70345\",\"kind\":\"client\",\"name\":\"micrometer://timer:get-allowed-methods-of-payment-time?action=start\",\"timestamp\":1702938981069686,\"duration\":6630,\"localendpoint\":{\"servicename\":\"micrometer://timer:get-allowed-methods-of-payment-time?action=start\",\"ipv4\":\"10.129.6.120\"},\"tags\":{\"camel.client.endpoint.url\":\"micrometer://timer:get-allowed-methods-of-payment-time?action=start\",\"camel.client.exchange.id\":\"cbe3d7cc933d03a-0000000000000001\",\"camel.client.exchange.pattern\":\"inout\"}}"}

这些是来自我的 springboot 应用程序的应用程序的日志。在第一个日志中，有实际的消息，第二个日志只是一个跟踪日志，其中消息内部有跟踪信息。

只要有消息，第一行就可以。但第二行我只想打印消息内的跟踪日志（以 { taceid 开头）。我将在下面发布我的 logback 配置

<?xml version="1.0" encoding="UTF-8"?><configuration><include resource="org/springframework/boot/logging/logback/defaults.xml"></include><springproperty scope="context" name="springAppName" source="spring.application.name"></springproperty><!-- Example for logging into the build folder of your project --><!-- You can override this to have a custom pattern --><property name="CONSOLE_LOG_PATTERN" value="%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %-5level [${springAppName},%X{traceId:-},%X{spanId:-}] %clr([%X{iv-user:-},%X{user-id:-},%X{customer-number:-}]) %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}"></property><!-- Appender to log to console --><appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender"><encoder><pattern>${CONSOLE_LOG_PATTERN}</pattern><charset>utf8</charset><immediateflush>true</immediateflush></encoder></appender><appender name="ASYNC-CONSOLE" class="ch.qos.logback.classic.AsyncAppender"><appender-ref ref="CONSOLE"></appender-ref><!-- do not discard any messages --><discardingthreshold>0</discardingthreshold><!-- size of the blocking queue --><queuesize>500</queuesize></appender><!-- Appender to log to file in a JSON format --><appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"><encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder"><providers><timestamp><timezone>UTC</timezone></timestamp><pattern><pattern>
                        {
                        "severity": "%level",
                        "service": "${springAppName:-}",
                        "traceId": "%X{traceId:-}",
                        "spanId": "%X{spanId:-}",
                        "user-id":"%X{user-id}",
                        "iv-user":"%X{iv-user}",
                        "customer-number":"%X{customer-number}",
                        "exportable": "%X{spanExportable:-}",
                        "pid": "${PID:-}",
                        "thread": "%thread",
                        "class": "%logger{40}",
                        "message": "%message"
                        }
                    </pattern></pattern><stacktrace><throwableconverter class="net.logstash.logback.stacktrace.ShortenedThrowableConverter"><maxdepthperthrowable>10</maxdepthperthrowable><maxlength>2048</maxlength><shortenedclassnamelength>32</shortenedclassnamelength><exclude>sun\.reflect\..*\.invoke.*</exclude><exclude>net\.sf\.cglib\.proxy\.MethodProxy\.invoke</exclude><rootcausefirst>true</rootcausefirst></throwableconverter></stacktrace></providers><immediateflush>false</immediateflush></encoder></appender><appender name="ASYNC-STDOUT" class="ch.qos.logback.classic.AsyncAppender"><appender-ref ref="STDOUT"></appender-ref><!-- do not discard any messages --><discardingthreshold>0</discardingthreshold><!-- size of the blocking queue --><queuesize>500</queuesize></appender><if condition='!isDefined("LOG_LEVEL")'><then><property name="LOG_LEVEL" value="INFO"></property></then></if><root level="${LOG_LEVEL}"><if condition='isDefined("ELK_OUTPUT")'><then><appender-ref ref="ASYNC-STDOUT"></appender-ref></then><else><appender-ref ref="ASYNC-CONSOLE"></appender-ref></else></if></root></configuration>

这是我的logback-spring xml，我想在其中自定义stdout模式。在 %message 中，我已经获取了 json 格式的跟踪信息，并且“net.logstash.logback.encoder.loggingeventcompositejsonencoder”类正在将 json 转换为 json，此时反斜杠进入消息的每个子字段。

所以这里的要求是删除跟踪消息的前缀，以便它只打印 %message，它是 json。

并且还删除 json 编码器，这样我就不会在每个子字段中插入这些反斜杠。

我厌倦了删除在编译时给我带来错误的类，并且还尝试提供核心编码器，这在编译时也给了 logback 配置错误。

我没有找到删除 c.c.s.config.sleuth.loggingspanreporter 类生成的日志的所有前缀的方法。

请建议一种方法，以便在 loggingspanreporter 有日志行时仅打印跟踪并删除 json encoder 类。我想要的只是 json 格式，以便 kibana 解析为子字段。

解决方法

<appender name="TRACE" class="ch.qos.logback.core.ConsoleAppender"><encoder><pattern>%message%n</pattern><charset>utf8</charset><immediateflush>true</immediateflush></encoder></appender><appender name="ASYNC-TRACE" class="ch.qos.logback.classic.AsyncAppender"><appender-ref ref="TRACE"></appender-ref><!-- do not discard any messages --><discardingthreshold>0</discardingthreshold><!-- size of the blocking queue --><queuesize>500</queuesize></appender><!--Appends Custom pattern for Trace Logs--><logger name="com.cpg.springboot.config.sleuth.LoggingSpanReporter" level="INFO" additivity="false"><appender-ref ref="ASYNC-TRACE"></appender-ref></logger>

这解决了我的模式问题，kibana 能够解析 json 并映射到字段中。此附加程序的目标是 sleuth.loggingspanreporter 类生成的日志 并应用该模式并仅打印 %message 内的跟踪。