默认情况下,Spring Boot会用Logback来记录日志,并用INFO级别输出到控制台(如下图所示)。
\"在这里插入图片描述\"
但是,有时候启动项目springboot默认打印日志与jar的打印日志会产生冲突(如下)

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/D:/mavencangku/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/D:/mavencangku/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
Exception in thread \"main\" java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.Log4jLoggerFactory loaded from file:/D:/mavencangku/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar). If you are using WebLogic you will need to add \'org.slf4j\' to prefer-application-packages in WEB-INF/weblogic. : org.slf4j.impl.Log4jLoggerFactory
	at org.spring work.util.Assert.instanceCheckFailed(Assert.java:637)
	at org.spring work.util.Assert.isInstanceOf(Assert.java:537)
	at org.spring work.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:286)
	at org.spring work.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:102)
	at org.spring work.boot.context.logging.LoggingApplicationListener.onApplicati ingEvent(LoggingApplicationListener.java:191)
	at org.spring work.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:170)
	at org.spring work.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
	at org.spring work.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
	at org.spring work.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
	at org.spring work.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
	at org.spring work.boot.context.event.EventPublishingRunListener.starting(EventPublishingRunListener.java:68)
	at org.spring work.boot.SpringApplicationRunListeners.starting(SpringApplicationRunListeners.java:48)
	at org.spring work.boot.SpringApplication.run(SpringApplication.java:293)
	at org.spring work.boot.SpringApplication.run(SpringApplication.java:1242)
	at org.spring work.boot.SpringApplication.run(SpringApplication.java:1230)
	at com.jk.app.DubboProviderApplication.main(DubboProviderApplication.java:16)

解决方案1、pom. 中jar进行替换

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

解决方案2、pom. 中jar进行替换

<dependency>
        <groupId>org.spring work.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <exclusions>
                <exclusion>
                    <groupId>ch.qos.logback</groupId>
                   <artifactId>logback-classic</artifactId>
                </exclusion>
           </exclusions>
</dependency>

解决方案3、

Exception in thread \"main\" java.lang.IllegalArgumentException: Cannot instantiate interface org.spring work.context.ApplicationListener : org.spring work.boot.logging.ClasspathLoggingApplicationListener
。。。。。。
Caused by: java.lang.NoClassDefFoundError: org/spring work/context/event/GenericApplicationListener

这个问题可能是由于Spring的版本低导致,升级spring版本。亲测到4.2.5.RELEASE可以
<org.spring work.version>4.2.5.RELEASE</org.spring work.version>

解决方案4、
将maven仓库中的关于打印日志的jar删除(似乎没用)

以上解决方案仅能解决项目启动时的不出错,无法解决打印出有效的日志

收藏 打印