属性 值未访问

Question

我是骆驼初学者。我有一些问题。

我们正在使用 camel 实现文件传输系统。

我从外部 属性 文件设置 属性。

但应用程序无法访问此 属性 文件。我们不能使用 propertyplaceholder 因为该值将在运行时更改。

我们实现如下。

• camelContext.xml :

  <bean id="myProperties" class="java.util.Properties"/>
  <bean id="propertylist"
      class="org.apache.camel.component.properties.PropertiesComponent">
  <property name="cache" value="true"/>
  <property name="location" value="classpath:camelap.properties"/>
  <property name="overrideProperties" ref="myProperties"/>
  </bean>
  <camelContext id="camelContext-f611cb6c-d516-4346-9adc-5512d327a88d"
              trace="false" xmlns="http://camel.apache.org/schema/spring">
  <camel:route id="initial_info">
      <camel:from id="_initial" uri="direct:sqlParam"/>
      <camel:to id="_selectReference" uri="sql:{{sql.referenceInfo}}?
          dataSource=dataSource"/>
      <camel:process id="_process1" ref="tempBean"/>
      <camel:log id="_aaaa" loggingLevel="WARN" message="tttttttt :::
          {{test}} ::: ${header.sourceDirectory}"/>
  </camel:route>
  

• camelap.properties :

  path : target/classes
  file.uri=/home/WRK/KR/SND/DAT
  test=OLD_VALUE
  file.pattern=SLPNPM*,SPLNCC*,SLPNCM*,SLPNPC*
  
  ############################################
  ## SQL Statement ##
  ############################################
  sql.referenceInfo=SELECT DISTINCT \
                          A.WFLOW_INST_ID ,\
                          TO_CHAR(A.EFCT_ST_DT,'YYYYMMDDHH24MISS') EFCT_ST_DT, \
                          B.NE_ID , \
                          B.NE_TYPE_ID , \
                          B.CDR_FILE_COLEC_DIR_NM , \
                          B.ORIGIN_FMT_ID , \
                          B.TRM_DIR_NM , \
                          D.CDR_FILE_NMNG_RULE_SBST, \
                          D.FILE_NM_LEN , \
                          B.FNS_FILE_CRET_YN , \
                          B.FNS_FILE_DIV_CD \
                          FROM TB_WFLOW_INFO A, \
                              TB_CDRSEND_BASE_INFO B, \
                              TB_FILE_FMT_INFO D \
                          WHERE A.WFLOW_INST_ID = 'P1_IPTVKR' \
                          AND B.NE_ID = 'KRLPPM10' \
                          AND now() BETWEEN A.EFCT_ST_DT AND A.EXP_DT \
                          AND now() BETWEEN B.EFCT_ST_DT AND B.EXP_DT \
                          AND A.WFLOW_INST_ID = B.WFLOW_INST_ID \
                          AND B.ORIGIN_FMT_ID = D.CDR_FILE_FMT_ID;
  

• Error Log :

     org.apache.camel.RuntimeCamelException:
     org.apache.camel.FailedToCreateRouteException: Failed to create route initial_info at: >>> To[sql:{{sql.referenceInfo}}?dataSource=dataSource] <<< in route: Route(initial_info)[[From[direct:sqlParam]] -> [To[sql:{{sql... because of Property with key [sql.referenceInfo] not found in properties from text: sql:{{sql.referenceInfo}}?dataSource=dataSource
         at org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException(ObjectHelper.java:1826) ~[camel-core-2.23.1.jar:2.23.1]
         at org.apache.camel.spring.SpringCamelContext.start(SpringCamelContext.java:136) ~[camel-spring-2.23.1.jar:2.23.1]
         at org.apache.camel.spring.CamelContextFactoryBean.start(CamelContextFactoryBean.java:370) ~[camel-spring-2.23.1.jar:2.23.1]
         at org.apache.camel.spring.CamelContextFactoryBean.onApplicationEvent(CamelContextFactoryBean.java:417) ~[camel-spring-2.23.1.jar:2.23.1]
         at org.apache.camel.spring.CamelContextFactoryBean.onApplicationEvent(CamelContextFactoryBean.java:95) ~[camel-spring-2.23.1.jar:2.23.1]
         at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
         at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
         at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
         at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:402) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
         at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:359) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
         at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:896) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
         at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
         at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
         at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
         at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
         at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
    at com.ktds.openmzn.OpenmznApplication.main(OpenmznApplication.java:25) ~[classes/:na]
    .....
    Caused by: java.lang.IllegalArgumentException: Property with key [sql.referenceInfo] not found in properties from text: sql:{{sql.referenceInfo}}?dataSource=dataSource
    at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.getPropertyValue(DefaultPropertiesParser.java:271) ~[camel-core-2.23.1.jar:2.23.1]
    at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.readProperty(DefaultPropertiesParser.java:157) ~[camel-core-2.23.1.jar:2.23.1]
    at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.doParse(DefaultPropertiesParser.java:116) ~[camel-core-2.23.1.jar:2.23.1]
    at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.parse(DefaultPropertiesParser.java:100) ~[camel-core-2.23.1.jar:2.23.1]
    at org.apache.camel.component.properties.DefaultPropertiesParser.parseUri(DefaultPropertiesParser.java:63) ~[camel-core-2.23.1.jar:2.23.1]
    at org.apache.camel.component.properties.PropertiesComponent.parseUri(PropertiesComponent.java:235) ~[camel-core-2.23.1.jar:2.23.1]
    at org.apache.camel.component.properties.PropertiesComponent.parseUri(PropertiesComponent.java:178) ~[camel-core-2.23.1.jar:2.23.1]
    at org.apache.camel.impl.DefaultCamelContext.resolvePropertyPlaceholders(DefaultCamelContext.java:2547) ~[camel-core-2.23.1.jar:2.23.1]
  

Answer 1

如果要使用properties组件，需要给name绑定properties，就像这样

<camelContext trace="{{foo.trace}}" xmlns="http://camel.apache.org/schema/spring">
    <propertyPlaceholder id="properties" location="org/apache/camel/spring/processor/myprop.properties"/>
    <template id="camelTemplate" defaultEndpoint="{{foo.cool}}"/>
    <route>
        <from uri="direct:start"/>
        <setHeader headerName="{{foo.header}}">
            <simple>${in.body} World!</simple>
        </setHeader>
        <to uri="mock:result"/>
    </route>
</camelContext>

您可以找到更多信息here

不确定您是否使用 spring 引导，有一种简单的方法可以利用 spring 引导 properties within Camel Route。