如何针对Spring Boot中Logback日志错误进行有效排查与解决？

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在配置文件中遇到转换错误，提示没有找到能将字符串转换为Map（键值对）的转换器。以下是简化的解决方案：

错误原因：无法将字符串转换为所需的Map类型。

解决方法：

1.确保配置文件中的值格式正确，例如使用逗号分隔键值对。

2.如果可能，使用支持自动转换的Map类型，如`Map`。

3.如果自定义转换器，确保其正确实现并注册到Spring上下文中。

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：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

以上这篇基于spring boot 日志(logback)报错的解决方式就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持易盾网络。