Specifying jvm arguments in ant tasks

问题

I am specifying jvm arguments since i was getting out of heap space exception so just to avoid that i was specifying the below parameters in my ant target that is as shown below..

  <junit
   printsummary="true"
   fork="yes"
   haltonfailure="false"
   failureproperty="junitsFailed"
   errorProperty="junitsFailed"
  >
   <jvmarg value=" -Xmx1024m -Duser.timezone=GMT0"/>
  </junit>

but below i am getting the below exception ..

that is the invalid parameters are specified

回答1:

Use multiple <jvmarg> elements:

<junit printsummary="true" fork="yes" haltonfailure="false" failureproperty="junitsFailed" errorProperty="junitsFailed">
    <jvmarg value="-Xmx1024m"/>
    <jvmarg value="-Duser.timezone=GMT0"/>
</junit>

回答2:

You can set ANT_OPTS parameters. For example in Windows

SET ANT_OPTS=-Xmx1024m -XX:MaxPermSize=256m

or just use maxmemory attribute of junit ant task (http://ant.apache.org/manual/Tasks/junit.html):

<junit maxmemory="1024m" ...

来源：https://stackoverflow.com/questions/25039864/specifying-jvm-arguments-in-ant-tasks