springboot logback如何從apollo配置中心讀取變量

app:
  id: SX-sale-app-soa
apollo:
  bootstrap:
    enabled: true
    #將Apollo配置加載提到初始化日志系統之前
    eagerLoad:
      enabled: true
    namespaces: application.yml,logback-config

<?xml version="1.0" encoding="UTF-8"?>
<!-- 日志級別從低到高分為TRACE < DEBUG < INFO < WARN < ERROR < FATAL，如果設置為WARN，則低於WARN的信息都不會輸出 -->
<!-- scan:當此屬性設置為true時，配置文件如果發生改變，將會被重新加載，默認值為true -->
<!-- scanPeriod:設置監測配置文件是否有修改的時間間隔，如果沒有給出時間單位，默認單位是毫秒。當scan為true時，此屬性生效。默認的時間間隔為1分鐘。 -->
<!-- debug:當此屬性設置為true時，將打印出logback內部日志信息，實時查看logback運行狀態。默認值為false。 -->
<configuration  scan="true" scanPeriod="10 seconds">
 
	<!-- 讀取apollo配置中心設置的變量 -->
	<springProperty scope="context" name="logstash.host" source="logstash.host"></springProperty>
	<springProperty scope="context" name="logstash.port" source="logstash.port"></springProperty>
	<springProperty scope="context" name="log.path" source="log.path"></springProperty>
	
	<appender name="LOGSTASH" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
        <remoteHost>${logstash.host}</remoteHost>
        <port>${logstash.port}</port>
        <!-- encoder必須配置,有多種可選 -->
        <encoder charset="UTF-8" class="net.logstash.logback.encoder.LogstashEncoder" >
            <!-- "appname":"yang_test" 的作用是指定創建索引的名字時用，並且在生成的文檔中會多瞭這個字段  -->
            <customFields>{"appname":"server-user"}</customFields>
        </encoder>
    </appender>

<property name="rabbitmq_host" source="spring.rabbitmq.host"/>
<property name="rabbitmq_vhost" source="spring.rabbitmq.virtual-host"/>
<property name="rabbitmq_username" source="spring.rabbitmq.username"/>
<property name="rabbitmq_password" source="spring.rabbitmq.password"/>

#RabbitMQ配置
spring:
   rabbitmq:
     host: 127.0.0.1
     virtual-host: test
     username: admin
     password: 123
logging:
  config: classpath:logback-test.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds" debug="false">
    <!-- 日志存放路徑 -->
   <property name="log.path" value="./target/logs/system-service" />
    <!-- 參數 -->
    <property name="app_name" source="spring.application.name"/>
    <property name="app_instance_id" source="rabbitmq.instance"/>
    <property name="rabbitmq_host" source="spring.rabbitmq.host"/>
    <property name="rabbitmq_vhost" source="spring.rabbitmq.virtual-host"/>
    <property name="rabbitmq_username" source="spring.rabbitmq.username"/>
    <property name="rabbitmq_password" source="spring.rabbitmq.password"/>
   <!-- 日志輸出格式 -->
   <property name="log.pattern"
              value="%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - [%method,%line] - %msg%n" />:ss} %-5level ${springAppName:-} %thread %logger %msg%n"/>
    <!-- 控制臺輸出 -->
   <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
      <encoder>
         <pattern>${log.pattern}</pattern>
            <charset>UTF-8</charset>
      </encoder>
   </appender>
    <!-- 系統日志輸出 -->
   <appender name="FIFE" class="ch.qos.logback.core.rolling.RollingFileAppender">
       <file>${log.path}/${app_name}.log</file>
        <!-- 循環政策：基於時間創建日志文件 -->
      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 日志文件名格式 -->
         <fileNamePattern>${log.path}/${app_name}.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
         <!-- 日志最大的歷史 60天 -->
         <maxHistory>10</maxHistory>
            <maxFileSize>10MB</maxFileSize>
      </rollingPolicy>
        <append>true</append>
      <encoder>
         <pattern>${log.pattern}</pattern>
            <charset>UTF-8</charset>
      </encoder>
      <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <!-- 過濾的級別 -->
            <level>INFO</level>
            <!-- 匹配時的操作：接收（記錄） -->
            <onMatch>ACCEPT</onMatch>
            <!-- 不匹配時的操作：拒絕（不記錄） -->
            <onMismatch>DENY</onMismatch>
        </filter>
   </appender>
    <!-- 日志發送到消息隊列RabbitMQ，接入ELK -->
    <appender name="RabbitMQ" class="org.springframework.amqp.rabbit.logback.AmqpAppender">
        <!-- 純文本，不是格式化的JSON -->
        <layout>
            <pattern>
                {
                    "appName":"${app_name}",
                    "appInstance":"${app_instance_id}",
                    "date":"%d{yyyy-MM-dd HH:mm:ss.SSS}",
                    "thread":"[%thread]",
                    "level":"%-5level",
                    "logger":"%logger{36}",
                    "msg":"%msg"
                }
            </pattern>
        </layout>
        <host>${rabbitmq_host}</host>
        <port>5672</port>
        <username>${rabbitmq_username}</username>
        <password>${rabbitmq_password}</password>
        <virtualHost>${rabbitmq_vhost}</virtualHost>
        <declareExchange>false</declareExchange>
        <exchangeType>direct</exchangeType>
        <exchangeName>logs.direct</exchangeName>
        <routingKeyPattern>logback</routingKeyPattern>
        <generateId>true</generateId>
        <durable>false</durable>
        <charset>UTF-8</charset>
        <deliveryModel>NON_PERSISTENT</deliveryModel>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>info</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
   <!--系統操作日志-->
    <root level="INFO">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="FILE" />
        <appender-ref ref="RabbitMQ" />
    </root>
</configuration>