Spring 使用 log4j2 和 tomcat 启动

Question

我在使用 spring 启动 web 应用程序时遇到了一些麻烦。 我没有使用嵌入式 tomcat，我禁用了它。 我的 web 应用程序使用 Log4j2 作为记录器。 在 Eclipse 中调试时没有问题并创建我的日志文件，但使用外部 tomcat 没有。 这是我的 pom 文件：

<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 https://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>2.1.14.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
  </parent>

  <groupId>pos.com.incidents</groupId>
  <artifactId>pos-com-incidents</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>pos-com-incidents</name>

  <properties>
    <java.version>1.8</java.version>
  </properties>

  <dependencies>

    <!-- Spring -->
    <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-test</artifactId>
      <scope>test</scope>
    </dependency>

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

    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-tomcat</artifactId>
      <scope>provided</scope>
    </dependency>

    <!-- Lombok -->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <optional>true</optional>
    </dependency>

    <!-- Informix -->
    <dependency>
      <groupId>JDBCDrivers.Informix</groupId>
      <artifactId>ifxjdbc</artifactId>
      <version>4.10.JC4</version>
    </dependency>

    <!-- Log4j -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-api</artifactId>
    </dependency>

    <!-- Jackson -->
    <dependency>
      <groupId>com.fasterxml.jackson.dataformat</groupId>
      <artifactId>jackson-dataformat-yaml</artifactId>
    </dependency>

    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
    </dependency>

    <!-- Apache Commons -->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
    </dependency>

    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-collections4</artifactId>
      <version>4.0</version>
    </dependency>

    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.6</version>
    </dependency>

    <dependency>
      <groupId>commons-beanutils</groupId>
      <artifactId>commons-beanutils</artifactId>
      <version>1.9.2</version>
    </dependency>

    <dependency>
      <groupId>commons-validator</groupId>
      <artifactId>commons-validator</artifactId>
      <version>1.6</version>
    </dependency>

    <!-- Joda -->
    <dependency>
      <groupId>joda-time</groupId>
      <artifactId>joda-time</artifactId>
    </dependency>
  </dependencies>

  <build>
    <finalName>${artifactId}</finalName>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>

</project>

我的 Log4j2 配置文件。 我喜欢 yml 文件。

Configuration:
  status: warn

  appenders:
    Console:
      name: AppConsole
      target: SYSTEM_OUT
      PatternLayout:
        Pattern: "%style{%d{ISO8601}}{black} %highlight{%-5level }[%style{%t}{bright,blue}] %style{%C{1.}}{bright,yellow}: %msg%n%throwable"

    RollingFile:
      - name: AppDetail
        fileName: ${catalina.home}/logs/Incidents.log
        filePattern: "${catalina.home}/logs/Incidents-%d{-yyyy-MM-dd-}-%i.log.gz"
        PatternLayout:
          pattern: "%d %p %C{1.} [%t] %m%n"
        Policies:
          OnStartupTriggeringPolicy: {}
          SizeBasedTriggeringPolicy:
            size: 50 MB
        DefaultRollOverStrategy:
          max: 30

  Loggers:
    logger:
      - name: pos.sams.incidents.logging
        level: info
        additivity: false
        AppenderRef:
          - ref: AppDetail
          - ref: AppConsole

    Root:
      level: info
      AppenderRef:
        ref: AppConsole

我不想将 Log4j2 用作 tomcat 的记录器，而只是用于我的应用程序。 可能是什么问题和解决方案？

Answer 1

如果有人遇到此问题， ${catalina.home}更改为${sys:catalina.home} ，文档会有所帮助。

http://logging.apache.org/log4j/2.x/manual/configuration.html#PropertySubstitution