在spring boot中将日志发送到log stash，而不写入日志文件

<dependency>
    <groupId>net.logstash.logback</groupId>
    <artifactId>logstash-logback-encoder</artifactId>
    <version>6.6</version>
</dependency>

# 使用Logstash作为日志输出
logging.file= # 禁用默认的日志文件输出
logging.level.root=INFO

# Logstash Appender配置
logging.logstash.url=http://localhost:5000 # Logstash服务器的URL
logging.logstash.queueSize=512 # 队列大小
logging.logstash.writeBufferSize=1024 # 写入缓冲区大小

<configuration>
    <appender name="logstash" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
        <destination>${LOGSTASH_URL}</destination>
        <encoder class="net.logstash.logback.encoder.LogstashEncoder" />
        <queueSize>${LOGSTASH_QUEUE_SIZE}</queueSize>
        <writeBufferSize>${LOGSTASH_WRITE_BUFFER_SIZE}</writeBufferSize>
    </appender>

    <root level="INFO">
        <appender-ref ref="logstash" />
    </root>
</configuration>