获取java.lang.IllegalStateException：Logback配置错误检测到错误

Question

在我的spring boot应用程序中，Logback正在将我抛到下面错误

我的登录配置是：

<Configuration status="WARN">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
        </Console>
        <RollingFile name="RollingFile" fileName="${sys:home}/logs/log"
            filePattern="${sys:home}/logs/mylog-%i.log" bufferedIO="false"
            immediateFlush="true" append="true">
            <PatternLayout>
                <pattern>%d %p [%t] %c{1.} %m%n</pattern>
            </PatternLayout>
            <Policies>
                <SizeBasedTriggeringPolicy size="20 MB" />
            </Policies>
            <DefaultRolloverStrategy max="100" />
        </RollingFile>
    </Appenders>

    <Loggers>
        <Root level="error">
            <AppenderRef ref="RollingFile" />
            <AppenderRef ref="Console" />
        </Root>
        <Logger name="org.springframework" level="info" additivity="false">
            <AppenderRef ref="RollingFile"></AppenderRef>
            <AppenderRef ref="Console"></AppenderRef>
        </Logger>
        <Logger name="com.myproj" level="debug" additivity="false">
            <AppenderRef ref="RollingFile"></AppenderRef>
        </Logger>
    </Loggers>
</Configuration>

Answer 1

这很可能是log4j2配置。为了支持它，您的Spring Boot pom文件必须更新如下：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<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>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>

更多详情请参见:https://docs.spring.io/spring-boot/docs/current/reference/html/howto.html#howto-logging（第8.2节配置Log4j进行日志记录）。