springboot整合log4j2报错Unexpected filename extension of file[fileEclasses_log4j2.yml].Should be .xm

以你之姓@ 2023-09-27 10:47 26阅读 0赞

### 问题描述 ###

今天通过springboot整合log4j2，坐标如下：

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-log4j2</artifactId>
                <version>${logf4j2-version}</version>
            </dependency>

启动时候程序报错信息如下：

Logging system failed to initialize using configuration from 'classpath:log4j2.yml'
    java.lang.IllegalStateException: Could not initialize Logback logging from classpath:log4j2.yml
    	at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:168)
    	at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithSpecificConfig(AbstractLoggingSystem.java:66)
    	at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:57)
    	at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:132)
    	at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:316)
    	at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:282)
    	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:240)
    	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:216)
    	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
    	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
    	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
    	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
    	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:85)
    	at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:66)
    	at java.util.ArrayList.forEach(ArrayList.java:1257)
    	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:120)
    	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:114)
    	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:65)
    	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:339)
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:297)
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312)
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301)
    	at com.lcdp.lcdpservicedatasource.LcdpServiceDatasourceApplication.main(LcdpServiceDatasourceApplication.java:14)
    Caused by: ch.qos.logback.core.LogbackException: Unexpected filename extension of file [file:/E:/xxx/target/classes/log4j2.yml]. Should be .xml
    	at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:66)
    	at org.springframework.boot.logging.logback.LogbackLoggingSystem.configureByResourceUrl(LogbackLoggingSystem.java:191)
    	at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:165)

### 解决办法 ###

看这行报错是logback抛出来的，不符合我们需要加载的预期，我们把springboot的默认日志依赖排除后，启动正常。

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
        <exclusions>
            
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>