基于spring boot 日志(logback)报错的解决方式
(编辑：jimmy 日期: 2025/1/16 浏览：3 次 )
记录一次报错解决方法：
No converter found capable of converting from type [java.lang.String] to type [java.util.Map<java.lang.String, java.lang.String>]
org.springframework.boot.context.properties.bind.BindException: Failed to bind properties under 'logging.level' to java.util.Map<java.lang.String, java.lang.String> at org.springframework.boot.context.properties.bind.Binder.handleBindError(Binder.java:250) at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:226) at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:210) at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:166) at org.springframework.boot.context.logging.LoggingApplicationListener.setLogLevels(LoggingApplicationListener.java:307) at org.springframework.boot.context.logging.LoggingApplicationListener.initializeFinalLoggingLevels(LoggingApplicationListener.java:290) at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:238) at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:200) at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:173) at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74) at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54) at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:361) at org.springframework.boot.SpringApplication.run(SpringApplication.java:320) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1258) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246) Caused by: org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [java.lang.String] to type [java.util.Map<java.lang.String, java.lang.String>] at org.springframework.core.convert.support.GenericConversionService.handleConverterNotFound(GenericConversionService.java:321) at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:194) at org.springframework.boot.context.properties.bind.BindConverter$CompositeConversionService.convert(BindConverter.java:162) at org.springframework.boot.context.properties.bind.BindConverter.convert(BindConverter.java:96) at org.springframework.boot.context.properties.bind.BindConverter.convert(BindConverter.java:88) at org.springframework.boot.context.properties.bind.MapBinder.bindAggregate(MapBinder.java:67) at org.springframework.boot.context.properties.bind.AggregateBinder.bind(AggregateBinder.java:58) at org.springframework.boot.context.properties.bind.Binder.lambda$bindAggregate$2(Binder.java:305) at org.springframework.boot.context.properties.bind.Binder$Context.withIncreasedDepth(Binder.java:441) at org.springframework.boot.context.properties.bind.Binder$Context.access$100(Binder.java:381) at org.springframework.boot.context.properties.bind.Binder.bindAggregate(Binder.java:304) at org.springframework.boot.context.properties.bind.Binder.bindObject(Binder.java:262) at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:221) ... 18 common frames omitted
application.yml中的原配置如下：(spring boot版本2.0.4)
logging: path: ./logs/ level: debug
报错后，spring boot切换回1.5.9发现没问题，因此去官网查找
官网：https://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#boot-features-custom-log-levels
看到这部分
26.4 Log Levels
All the supported logging systems can have the logger levels set in the Spring Environment (for example, in application.properties) by using logging.level.<logger-name>=<level> where level is one of TRACE, DEBUG, INFO, WARN, ERROR, FATAL, or OFF. The root logger can be configured by using logging.level.root.
The following example shows potential logging settings in application.properties:
logging.level.root=WARN logging.level.org.springframework.web=DEBUG logging.level.org.hibernate=ERROR
看完这部分，将yml改为如下：
logging: path: ./logs/ level: root: debug
再次重启，问题解决
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