CreateProcess error=87

引起这个问题的原因是classpath过长造成的,据说是jdk在windows下的bug

javadoc引起的参考
http://www.ericsson.com/developer/sub/open/technologies/parlayx/forum_replies.html?TID=30442&Start=1&Step=25
解决办法:
在javadoc task中添加useexternalfile="true"
<javadoc destdir="${doc.dir}/px_spec_v2_1-components-api" use="false" version="true" windowtitle="${project.name}" 
useexternalfile="true"/>

<fileset defaultexcludes="yes" dir="${src.dir}">
<include name="**/*.java"/>
<exclude name="**/sig4/**"/>
</fileset>
<classpath refid="classpath"/>


appengine引起的参考
http://code.google.com/p/googleappengine/issues/detail?id=1862

解决办法:
修改 ${appengine_home}\config\user\ant-macros.xml

from
  <fileset dir="@{war}/WEB-INF/classes" includes="**/*.class"/>
  to
  <fileset dir="@{war}/WEB-INF/classes" includes="**/*JDO.class"/>




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