Question

我把我的原木4j2.yml与泉水boot的特性混为一谈:

Properties:
    property:
      - name: LOGSTASH_HOST
        value: ${spring:logstash.server.host}
      - name: LOGSTASH_PORT
        value: ${spring:logstash.server.port}
      - name: APPLICATION_NAME
        value: ${lower:${spring:spring.application.name:-spring}}

If I start my application I get a bunch of error messages saying:

ERROR StatusConsoleListener Resolver failed to lookup spring:logstash.server.host java.lang.IllegalStateException: Unable to obtain Spring Environment from LoggerContext

以及

ERROR StatusConsoleListener Unable to write to stream TCP:localhost:9800 for appender LOGSTASH org.apache.logging.log4j.core.appender.AppenderLoggingException: Error writing to TCP:localhost:9800: socket not available at org.apache.logging.log4j.core.net.TcpSocketManager.write(TcpSocketManager.java:214)

It can not find the serverhost until springboot starts which takes a few seconds, after that the logging works fine 以及 no more error messages.

How could I configure my log4J2 to start after or when springboot starts 以及 don t spam error messages.

I ve试图排除 spring开端 logging的 logging木:

<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-log4j2</artifactId>
        </dependency>

or I ve tried fallback hosts 以及 ports:

Properties:
  property:
    - name: LOGSTASH_HOST
      value: "${sys:LOGSTASH_HOST:-${env:LOGSTASH_HOST:-localhost}}" # Prefer system property, then env variable, fallback to  localhost 
    - name: LOGSTASH_PORT
      value: "${sys:LOGSTASH_PORT:-${env:LOGSTASH_PORT:-5044}}" # Prefer system property, then env variable, fallback to  5044 
    - name: APPLICATION_NAME
      value: "${sys:spring.application.name:-${env:spring_application_name:-default-application}}" # System property, env variable, fallback

Answer 1

Try renaming your log4j2.yml file to log4j2-spring.yml This is one possibility described in the documentation since 3.0.0: https://docs.spring.io/spring-boot/docs/3.2.4/reference/html/features.html#features.logging.log4j2-extensions

由于标准标识4j2.xml配置文件装上太早,你不能使用延期文件。你们要么使用标志4j2-后代。 xml或界定伐木。没收财产。

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