SpringBoot日志记录中的ClassCastException

时间：2019-11-01 14:00:34

标签： java spring spring-boot spring-cloud classcastexception

我的应用程序启动时遇到问题。在ClassCastException logging.level.root=INFO上配置日志级别时，应用程序失败。

我尝试在application.properties中设置 <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${springframework.boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> ，并且发生相同的错误。不知道还有什么尝试。

我刚刚将其升级到SpringBoot 2.x，特别是使用了此依赖项BOM：

[INFO] +- org.springframework.boot:spring-boot-starter-web:jar:2.2.0.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot-starter:jar:2.2.0.RELEASE:compile
[INFO] |  |  +- org.springframework.boot:spring-boot:jar:2.2.0.RELEASE:compile
[INFO] |  |  +- org.springframework.boot:spring-boot-autoconfigure:jar:2.2.0.RELEASE:compile
[INFO] |  |  +- org.springframework.boot:spring-boot-starter-logging:jar:2.2.0.RELEASE:compile
[INFO] |  |  |  +- ch.qos.logback:logback-classic:jar:1.2.3:compile
[INFO] |  |  |  |  \- ch.qos.logback:logback-core:jar:1.2.3:compile
[INFO] |  |  |  +- org.apache.logging.log4j:log4j-to-slf4j:jar:2.12.1:compile
[INFO] |  |  |  |  \- org.apache.logging.log4j:log4j-api:jar:2.12.1:compile
[INFO] |  |  |  \- org.slf4j:jul-to-slf4j:jar:1.7.28:compile
[INFO] |  |  +- org.springframework:spring-core:jar:5.2.0.RELEASE:compile
[INFO] |  |  |  \- org.springframework:spring-jcl:jar:5.2.0.RELEASE:compile
[INFO] |  |  \- org.yaml:snakeyaml:jar:1.25:runtime
[INFO] |  +- org.springframework.boot:spring-boot-starter-json:jar:2.2.0.RELEASE:compile
[INFO] |  |  +- com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.10.0:compile
[INFO] |  |  +- com.fasterxml.jackson.datatype:jackson-datatype-jsr310:jar:2.10.0:compile
[INFO] |  |  \- com.fasterxml.jackson.module:jackson-module-parameter-names:jar:2.10.0:compile
[INFO] |  +- org.springframework.boot:spring-boot-starter-validation:jar:2.2.0.RELEASE:compile
[INFO] |  |  +- jakarta.validation:jakarta.validation-api:jar:2.0.1:compile
[INFO] |  |  \- org.hibernate.validator:hibernate-validator:jar:6.0.17.Final:compile
[INFO] |  |     \- org.jboss.logging:jboss-logging:jar:3.4.1.Final:compile
[INFO] |  +- org.springframework:spring-web:jar:5.2.0.RELEASE:compile
[INFO] |  \- org.springframework:spring-webmvc:jar:5.2.0.RELEASE:compile
[INFO] |     +- org.springframework:spring-aop:jar:5.2.0.RELEASE:compile
[INFO] |     +- org.springframework:spring-context:jar:5.2.0.RELEASE:compile
[INFO] |     \- org.springframework:spring-expression:jar:5.2.0.RELEASE:compile
[INFO] +- org.springframework.boot:spring-boot-starter-tomcat:jar:2.2.0.RELEASE:provided
[INFO] |  +- jakarta.annotation:jakarta.annotation-api:jar:1.3.5:compile
[INFO] |  +- org.apache.tomcat.embed:tomcat-embed-core:jar:9.0.27:provided
[INFO] |  +- org.apache.tomcat.embed:tomcat-embed-el:jar:9.0.27:provided
[INFO] |  \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:9.0.27:provided
[INFO] +- org.springframework.boot:spring-boot-starter-actuator:jar:2.2.0.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot-actuator-autoconfigure:jar:2.2.0.RELEASE:compile
[INFO] |  |  \- org.springframework.boot:spring-boot-actuator:jar:2.2.0.RELEASE:compile
[INFO] |  \- io.micrometer:micrometer-core:jar:1.3.0:compile
[INFO] |     +- org.hdrhistogram:HdrHistogram:jar:2.1.11:compile
[INFO] |     \- org.latencyutils:LatencyUtils:jar:2.0.3:compile

请找到依赖关系树的相关部分：

[INFO] |  |  +- org.springframework.cloud:spring-cloud-starter-oauth2:jar:2.0.0.RELEASE:compile
[INFO] |  |  |  +- org.springframework.cloud:spring-cloud-starter-security:jar:2.0.0.RELEASE:compile
[INFO] |  |  |  |  +- org.springframework.cloud:spring-cloud-starter:jar:2.0.0.RELEASE:compile
[INFO] |  |  |  |  |  +- org.springframework.cloud:spring-cloud-context:jar:2.0.0.RELEASE:compile
[INFO] |  |  |  |  |  |  \- org.springframework.security:spring-security-crypto:jar:5.2.0.RELEASE:compile
[INFO] |  |  |  |  |  +- org.springframework.cloud:spring-cloud-commons:jar:2.0.0.RELEASE:compile
[INFO] |  |  |  |  |  \- org.springframework.security:spring-security-rsa:jar:1.0.5.RELEASE:compile
[INFO] |  |  |  |  \- org.springframework.cloud:spring-cloud-security:jar:2.0.0.RELEASE:compile
[INFO] |  |  |  |     \- org.springframework.boot:spring-boot-starter-security:jar:2.2.0.RELEASE:compile
[INFO] |  |  |  \- org.springframework.security.oauth.boot:spring-security-oauth2-autoconfigure:jar:2.0.0.RELEASE:compile
[INFO] |  |  |     \- org.springframework.security:spring-security-jwt:jar:1.0.9.RELEASE:compile
[INFO] |  |  |        \- org.bouncycastle:bcpkix-jdk15on:jar:1.56:compile
[INFO] |  |  |           \- org.bouncycastle:bcprov-jdk15on:jar:1.56:compile


Caused by: java.lang.ClassCastException: java.util.HashMap cannot be cast to org.springframework.boot.logging.LogLevel
    at java.util.HashMap.forEach(HashMap.java:1289)
    at org.springframework.boot.context.logging.LoggingApplicationListener.setLogLevels(LoggingApplicationListener.java:398)
    at org.springframework.boot.context.logging.LoggingApplicationListener.initializeFinalLoggingLevels(LoggingApplicationListener.java:337)
    at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:288)
    at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:245)
    at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:222)
    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:76)
    at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
    at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:345)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)

这是堆栈跟踪：

application.properties

logging.level.root=warn logging.level.org.springframework.web=debug logging.level.org.hibernate=error logging.level.com.my.package.name=error 

levels

logging levels map causing problem 显然，这里的问题是此<link href="https://fonts.googleapis.com/css?family=Tajawal&display=swap" rel="stylesheet"> 映射中的值是哈希图，而不是字符串。...不确定为什么会这样。

2 个答案:

答案 0 :(得分：1)

尝试将日志记录值设置为WARN和 debug = true 并进行检查。

在属性文件中设置类似的值

logging.level.root=warn
logging.level.org.springframework.web=debug
logging.level.org.hibernate=error

在 log4j.xml 中，它看起来像这样

<root>
        <level value="WARN"/>
        <appender-ref ref="console" />
        <appender-ref ref="file"/>

</root>

有关登录Spring Boot的更多详细信息，请阅读以下链接 https://howtodoinjava.com/spring-boot2/logging/spring-boot-logging-configurations/

答案 1 :(得分：-3)

切换到logback，它可以使您更好地控制日志级别和附加程序。 参见https://dzone.com/articles/configuring-logback-with-spring-boot

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