我是初学者，在 Spring Boot 应用程序中设置 log4j2 时遇到问题。我已经尝试自己做大约一周了，阅读了很多提示、帖子和教程，但仍然没有找到解决方案。有人可以帮我吗？我想为不同的日志级别创建不同的文件，例如 error.log、warn.log 等。
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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.assessment.ww</groupId>
<artifactId>Assessment_Exercise</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Assessment_Exercise</name>
<description>Spring Boot Project</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</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-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</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>
</project>
log4j2.xml
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{yyyy-MMM-dd HH:mm:ss} [%t] %-5level %logger{36} - %msg%n"/>
</Console>
<File name="File" target="logs/app.log">
<PatternLayout pattern="%d{yyyy-MMM-dd HH:mm:ss} [%t] %-5level %logger{36} - %msg%n"/>
</File>
</Appenders>
<Loggers>
<!-- Log everything -->
<Logger name="com.assessment.ww.Assessment_Exercise" level="debug" additivity="false">
<AppenderRef ref="Console"/>
<AppenderRef ref="File"/>
</Logger>
<!-- Log everything in Spring Boot -->
<Logger name="org.springframework.boot" level="debug" additivity="false">
<AppenderRef ref="Console"/>
<AppenderRef ref="File"/>
</Logger>
<!-- Log everything in Spring Core -->
<Logger name="org.springframework.core" level="debug" additivity="false">
<AppenderRef ref="Console"/>
<AppenderRef ref="File"/>
</Logger>
<Root level="all">
<AppenderRef ref="Console"/>
<AppenderRef ref="File"/>
</Root>
</Loggers>
</Configuration>
开始上课
package com.assessment.ww.Assessment_Exercise;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class AssessmentExerciseApplication {
private static final Logger logger = LogManager.getLogger(AssessmentExerciseApplication.class);
public static void main(String[] args) {
SpringApplication.run(AssessmentExerciseApplication.class, args);
logger.info("Starting SB app");
}
}
我也有这样的警告 - 也许它会有所帮助: enter image description here
它打印我的 logger.info 消息(但为什么不格式化？)但不创建任何文件。 enter image description here
预先感谢您的任何建议。
最佳答案
终于，我找到了解决办法。问题是 Logback - 即使我在 pom.xml 中的 spring-boot-starter-web 依赖项中禁用了它，它在 spring-boot-starter-data-jpa 和 spring-boot-starter-actuator 中仍然处于 Activity 状态。 所以现在我的 pom.xml 看起来像这样:
...
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</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-data-jpa</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-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
...
关于java - 如何让 log4j2 使用 Spring Boot 和 Maven 创建不同的日志文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57148313/