Ant 蚂蚁-打印集合-地图
我有一个ant脚本正在执行jmx get任务:Ant 蚂蚁-打印集合-地图,ant,map,jmx,Ant,Map,Jmx,我有一个ant脚本正在执行jmx get任务: <jmx:get name="java.lang:type=GarbageCollector,name=Copy" attribute="LastGcInfo" resultproperty="CopyLastGcInfo" /> 现在,LastGcInfo属性有一个名为memoryUsageBefor
<jmx:get
name="java.lang:type=GarbageCollector,name=Copy"
attribute="LastGcInfo"
resultproperty="CopyLastGcInfo"
/>
现在,LastGcInfo属性有一个名为memoryUsageBeforeGC的映射。在这个映射中,有一对带有一个名为“value”的键。虽然我无法引出它并打印出来。我试着这样做:
<echo>${CopyLastGcInfo.memoryUsageBeforeGc.value.used}</echo>
<echo>${CopyLastGcInfo.memoryUsageBeforeGc.0.used}</echo>
<echo>${CopyLastGcInfo.memoryUsageBeforeGc.used}</echo>
${CopyLastGcInfo.memoryUsageBeforeGc.value.used}
${CopyLastGcInfo.MEMORYUSAGEFOREGC.0.used}
${CopyLastGcInfo.MEMORYUSAGEFOREGC.used}
那没用。你对如何解决这个问题有什么建议吗
谢谢 下面的例子对我很有用:
<project name="Catalina Ant JMX" xmlns:jmx="antlib:org.apache.catalina.ant.jmx" default="jmx">
<target name="jmx" description="Show JMX stats">
<jmx:open host="localhost" port="9012" username="controlRole" password="tomcat"/>
<jmx:get name="java.lang:type=GarbageCollector,name=Copy"
attribute="LastGcInfo"
resultproperty="CopyLastGcInfo"
echo="false"
/>
<echo>
memoryUsageBeforeGc
===================
Perm Gen.used=${CopyLastGcInfo.memoryUsageBeforeGc.Perm Gen.used}
Tenured Gen.used=${CopyLastGcInfo.memoryUsageBeforeGc.Tenured Gen.used}
Eden Space.used=${CopyLastGcInfo.memoryUsageBeforeGc.Eden Space.used}
Code Cache.used=${CopyLastGcInfo.memoryUsageBeforeGc.Code Cache.used}
Survivor Space.used=${CopyLastGcInfo.memoryUsageBeforeGc.Survivor Space.used}
</echo>
</target>
</project>
注意
- “jmx:query”任务的“echo”属性可用于查看任务创建的ANT属性和值。用于故障排除
jmx:
[echo]
[echo] memoryUsageBeforeGc
[echo] ===================
[echo] Perm Gen.used=9660888
[echo] Tenured Gen.used=8393792
[echo] Eden Space.used=4456448
[echo] Code Cache.used=2038016
[echo] Survivor Space.used=172784
[echo]