在Spring中配置系统属性

时间:2011-10-06 08:29:47

标签: java spring properties system-properties

我有文件通道适配器,需要以指定的间隔监听目录。我有以下代码。

<file:inbound-channel-adapter id="fileAdapter"
         directory="file:${SYS.com.abc.wls.workdir}/finalize/" queue-size="1000"
    auto-startup="true" filename-pattern="*.txt">
<int:poller fixed-delay="500">          

</int:poller>       
 </file:inbound-channel-adapter>

当我用真实的目录名称(如directory="file:${SYS.com.abc.wls.workdir}/finalize/)重新发送directory="file:C:/temp/finalize/时,一切正常。但是在启动服务器时正在设置系统属性,但spring不会检测系统属性。

你能帮忙吗?

更新:

我有占位符

的以下配置
<beans:bean id="jobProperties"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <beans:property name="properties">
        <beans:value>
            job.group.commit.interval=5000
        </beans:value>
    </beans:property>
    <beans:property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_FALLBACK" />
    <beans:property name="ignoreUnresolvablePlaceholders"
        value="true" />
    <beans:property name="order" value="1" />
</beans:bean>

file:移除directory="file:${SYS.com.abc.wls.workdir}/finalize/"并更改为auto-create-directory="false",现在我得到例外,如下所示,

    by: java.lang.IllegalArgumentException: Source directory **[${SYS.com.abc.wls.workdir}\finalize] does not exist**.
 at org.springframework.util.Assert.isTrue(Assert.java:65)
 at org.springframework.integration.file.FileReadingMessageSource.onInit(FileReadingMessageSource.java:233)
 at org.springframework.integration.context.IntegrationObjectSupport.afterPropertiesSet(IntegrationObjectSupport.java:98)
 at org.springframework.integration.file.config.FileReadingMessageSourceFactoryBean.initSource(FileReadingMessageSourceFactoryBean.java:153)
 at org.springframework.integration.file.config.FileReadingMessageSourceFactoryBean.getObject(FileReadingMessageSourceFactoryBean.java:99)
 at org.springframework.integration.file.config.FileReadingMessageSourceFactoryBean.getObject(FileReadingMessageSourceFactoryBean.java:37)
 at org.springframework.beans.factory.support.FactoryBeanRegistrySupport$2.run(FactoryBeanRegistrySupport.java:133)
 at java.security.AccessController.doPrivileged(Native Method)
 at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:131)
 ... 63 more

1 个答案:

答案 0 :(得分:1)

您需要声明一个识别系统属性的spring实体。典型的方法是在Spring配置中添加PropertyPlaceHolderConfigurer

默认模式为SYSTEM_PROPERTIES_MODE_FALLBACK,这意味着配置器未保存的值将作为系统属性查找。可以使用setSystemPropertiesMode覆盖该模式。