如何在ant构建上设置vmarg

Question

当我试图在appengine sdk中运行jdoexamples时，我遇到了一个错误。有一个变通方法（-Dapengine.user.timezone.impl=UTC），当我在eclipse上设置它时，它就可以工作。但当我用蚂蚁建造它的时候，我怎么能做同样的事情呢？以下是ant构建的错误输出：

runserver:
 [java] java.lang.RuntimeException: Unable to restore the previous TimeZone
 [java]     at com.google.appengine.tools.development.DevAppServerImpl.restoreLocalTimeZone(DevAppServerImpl.java:228)
 [java]     at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:164)
 [java]     at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:164)
 [java]     at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48)
 [java]     at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServerMain.java:113)
 [java]     at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:89)
 [java] Caused by: java.lang.NoSuchFieldException: defaultZoneTL
 [java]     at java.lang.Class.getDeclaredField(Class.java:1882)
 [java]     at com.google.appengine.tools.development.DevAppServerImpl.restoreLocalTimeZone(DevAppServerImpl.java:222)
 [java]     ... 5 more

构建成功总时间：4秒

Answer 1

另一个选项是使用java任务的sysproperty属性从build.xml文件中设置系统属性：

 <java classname="test.Main" >
    <sysproperty key="appengine.user.timezone.impl" value="UTC"/>
  </java>