Java log4j核心信息技术&x27;在spring-boot-starter-log4j2的类路径上不存在
我根据这个-> 但当应用程序启动时,会出现以下消息:Java log4j核心信息技术&x27;在spring-boot-starter-log4j2的类路径上不存在,java,spring,maven,logging,spring-boot,Java,Spring,Maven,Logging,Spring Boot,我根据这个-> 但当应用程序启动时,会出现以下消息: ERROR StatusLogger Log4j2 could not find a logging implementation. Please add log4j-core to the classpath. Using SimpleLogger to log to the console. 这很奇怪,因为当我编译uber jar时,可能会看到嵌入的log4jjar。如果我手动放置lo4j2的依赖项,应用程序就会工作 这是我的pom.
ERROR StatusLogger Log4j2 could not find a logging implementation.
Please add log4j-core to the classpath. Using SimpleLogger to log to the console.
这很奇怪,因为当我编译uber jar时,可能会看到嵌入的log4j
jar。如果我手动放置lo4j2
的依赖项,应用程序就会工作
这是我的pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>xyz</groupId>
<artifactId>xyzzzz</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>xxxx</name>
<description>xxx</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<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</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-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<!--dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.8.2</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.8.2</version>
</dependency-->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.5</version>
</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>
</project>
4.0.0
xyz
xyzzz
0.0.1-快照
罐子
xxxx
xxx
org.springframework.boot
spring启动程序父级
1.5.4.1发布
UTF-8
UTF-8
1.8
org.springframework.boot
弹簧靴起动器
org.springframework.boot
spring启动程序日志记录
org.springframework.boot
弹簧靴起动器执行器
org.springframework.boot
SpringBootStarterWeb
org.springframework.boot
spring-boot-starter-log4j2
com.google.code.gson
格森
2.8.0
编译
org.apache.commons
commons-lang3
3.5
org.springframework.boot
弹簧起动试验
测试
org.springframework.boot
springbootmaven插件
我在许多博客文章或stackoverflow上进行了研究,没有发现类似的问题。我的pom.xml有问题吗?还是什么主意
提前谢谢 为什么不保留依赖项呢?如果它在中与它们一起工作,为什么不直接使用它呢?运行
mvn dependency:tree
,您看到log4j核心的可传递依赖性了吗?您如何运行应用程序,mvn spring boot:run,java-jar,IDE?这些依赖项都包含在log4j2starter中,所以这肯定很奇怪:@Makoto我写这篇文章是为了检查它是否是一个bug,或者问题是否出在我的项目上。因为应该根据文档工作。@J-Alex是的log4j存在:[INFO]+-org.springframework.boot:spring-boot-starter-log4j2:jar:1.5.4.RELEASE:compile[INFO]+-org.apache.logging.log4j:log4j-slf4j-impl:jar:2.7:compile[INFO]\-org.slf4j:slf4j-api:jar:1.7.25:compile[INFO]|+-org.apache.logging.log4j:log4j api:jar:2.7:compile[INFO]|+-org.apache.logging.log4j:log4j核心:jar:2.7:compile