使用 Tomcat 嵌入 Spring 启动 Web 应用程序配置 lo4j2 日志记录

Question

我已成功配置我的 Spring 启动网络应用程序以使用 log4j2 和我的配置文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN" monitorInterval="30">
<Properties>
    <Property name="LOG_PATTERN">
        %d{yyyy-MM-dd HH:mm:ss.SSS} %5p ${hostName} --- [%15.15t] %-40.40c{1.} : %m%n%ex
    </Property>
</Properties>
<Appenders>
    <Console name="ConsoleAppender" target="SYSTEM_OUT" follow="true">
        <PatternLayout pattern="${LOG_PATTERN}"/>
    </Console>
    <RollingFile name="FileAppender" fileName="${env:LEM_HOME}/Logs/LEM.log" 
                 filePattern="${env:LEM_HOME}/Logs/LEM-%d{yyyy-MM-dd}-%i.log">
        <PatternLayout>
            <Pattern>${LOG_PATTERN}</Pattern>
        </PatternLayout>
        <Policies>
            <SizeBasedTriggeringPolicy size="10MB" />
        </Policies>
        <DefaultRolloverStrategy max="10"/>
    </RollingFile>
</Appenders>
<Loggers>
    <Logger name="com.mdenis.labequipmentmanager" level="debug" additivity="false">
        <AppenderRef ref="ConsoleAppender" />
        <AppenderRef ref="FileAppender" />
    </Logger>
    <Logger name="org.apache.tomcat" level="debug" additivity="false">
        <AppenderRef ref="ConsoleAppender" />
        <AppenderRef ref="FileAppender" />
    </Logger>
    <Logger name="org.springframework" level="debug" additivity="false">
        <AppenderRef ref="ConsoleAppender" />
        <AppenderRef ref="FileAppender" />
    </Logger>
    <Logger name="org.hibernate" level="info" additivity="false">
        <AppenderRef ref="ConsoleAppender" />
        <AppenderRef ref="FileAppender" />
    </Logger>
    <Root level="error">
        <AppenderRef ref="ConsoleAppender"/>
    </Root>
</Loggers>
</Configuration>

我知道它有效，因为将 Spring 的日志级别设置为调试会在应用程序启动时为我提供大约一百万个日志条目。这是供参考的 POM.XML 文件：

<?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>com.mdenis</groupId>
<artifactId>LEM2</artifactId>
<version>1.0-SNAPSHOT</version>

<name>Lab Equipment Manager</name>

<properties>
    <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.4.RELEASE</version>
</parent>

<dependencies>

    <!--JAVA-->
    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
    </dependency>

    <!--TOMCAT-->
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
    </dependency>

    <!--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-jdbc</artifactId>
    </dependency>
    <!--<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-log4j2</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>

    <!--MICROSOFT-->
    <dependency>
        <groupId>com.microsoft.sqlserver</groupId>
        <artifactId>mssql-jdbc</artifactId>
    </dependency>

    <!--HIBERNATE-->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <version>6.0.12.Final</version>
    </dependency>

    <!--LOMBOK-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>

    <!--JSTL-->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
    </dependency>

    <!--VMWARE-->
    <dependency>
        <groupId>com.vmware</groupId>
        <artifactId>vijava</artifactId>
        <version>5.1</version>
    </dependency>

    <!--LOG4J2-->
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-slf4j-impl</artifactId>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-1.2-api</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-jcl</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-web</artifactId>
    </dependency>

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <executions>
                <execution>
                    <goals>
                        <goal>repackage</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

</project>

我唯一不能做的就是将 Tomcat 设置为调试级别。通过这些设置，我也可以将 Hibernate 设置为 DEBUG 模式，所以我相信 Tomcat 有一些特定的东西。

有没有办法像我使用其他框架一样使用 log4j2 控制 Tomcat 嵌入式日志记录级别？

谢谢！

Answer 1

我进行了更多搜索，找到了执行此操作的方法。您需要将此添加到 java -jar 命令中运行 :

-Djava.util.logging.manager=org.apache.logging.log4j.jul.LogManager

出于某种原因，无法像我对自己的记录器那样以编程方式更改日志记录级别，因此您必须将其放入 log4j2.xml 文件中：

    <Logger name="org.apache" level="debug" additivity="false">
        <AppenderRef ref="ConsoleAppenderWebClient" />
        <AppenderRef ref="FileAppenderWebClient" />
    </Logger>

使用 Tomcat 嵌入 Spring 启动 Web 应用程序配置 lo4j2 日志记录

Configuring lo4j2 logging with Tomcat embedded in a Spring Boot web app

java

log4j2

embedded-tomcat-8