如果您使用的是WebLogic，你將需要添加 'org.slf4j' 喜歡的應用程序的程序包在WEB-INF/weblogic.xml中：org.slf4j.impl.Log4jLoggerFactory

Question

Maven構建錯誤：

Exception in thread "restartedMain" java.lang.reflect.InvocationTargetException 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) 
Caused by: 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:/C:/Users/ravisut/.m2/repository/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.xml: org.slf4j.impl.Log4jLoggerFactory 
    at org.springframework.util.Assert.instanceCheckFailed(Assert.java:389) 
    at org.springframework.util.Assert.isInstanceOf(Assert.java:327) 
    at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:274) 
    at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:98) 
    at org.springframework.boot.logging.LoggingApplicationListener.onApplicationStartingEvent(LoggingApplicationListener.java:230) 
    at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:209) 
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:167) 
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) 
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:122) 
    at org.springframework.boot.context.event.EventPublishingRunListener.starting(EventPublishingRunListener.java:69) 
    at org.springframework.boot.SpringApplicationRunListeners.starting(SpringApplicationRunListeners.java:48) 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:292) 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) 

的pom.xml

<parent> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-starter-parent</artifactId> 
    <version>1.5.6.RELEASE</version> 
    <relativePath /> <!-- lookup parent from repository --> 
</parent> 

<properties> 
    <dop.version>10.0.1.0.0</dop.version> 
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> 
    <java.version>1.8</java.version> 
</properties> 

<dependencies> 
    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-data-jpa</artifactId> 
     <exclusions> 
      <exclusion> 
       <artifactId>log4j-over-slf4j</artifactId> 
       <groupId>org.slf4j</groupId> 
      </exclusion> 
     </exclusions> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-log4j2</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-web</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-actuator</artifactId> 
    </dependency> 

    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-devtools</artifactId> 
    </dependency> 

    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-test</artifactId> 
     <scope>test</scope> 
    </dependency> 
</dependencies> 
<build> 
    <plugins> 
     <plugin> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-maven-plugin</artifactId> 
     </plugin> 
    </plugins> 
</build> 

的weblogic.xml

<?xml version="1.0" encoding="UTF-8"?> 
<wls:weblogic-web-app 
    xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-web-app" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.7/weblogic-web-app.xsd"> 
    <wls:weblogic-version>12.1.3</wls:weblogic-version> 
    <wls:context-root>test</wls:context-root> 

    <wls:container-descriptor> 
     <wls:prefer-application-packages> 
      <wls:package-name>org.slf4j.*</wls:package-name> 
      <wls:package-name>org.apache.commons.*</wls:package-name> 
     </wls:prefer-application-packages> 


    <wls:prefer-application-resources> 
     <wls:resource-name>org/slf4j/impl/StaticLoggerBinder.class</wls:resource-name> 
    </wls:prefer-application-resources> 
    </wls:container-descriptor> 


</wls:weblogic-web-app> 

Answer 1

呼叫mvn dependency:tree，看看誰是進口的logback，誰是進口SLF4J-log4j的，T母雞排除你不想要的。