in your programmatic call what happens if you put in a
execTask.setFailonerror(true);
execTask.setFailIfExecutionFails(true);
http://api.dpml.net/ant/1.7.0/org/apache/tools/ant/taskdefs/ExecTask.html#setFailIfExecutionFails(boolean)
before the execute()
public static void main(String[] args) throws IOException
{
// top level project
Project project = new Project();
project.setName("project");
project.init();
// project has a target child
Target target = new Target();
target.setName("target");
project.addTarget(target);
// target has an exec child
ExecTask execTask = new ExecTask();
execTask.setProject(project);
execTask.setExecutable("cmd.exe");
execTask.setSpawn(true);
execTask.setDir(new File("."));
addArg(execTask, "/c");
addArg(execTask, "start");
addArg(execTask, "test.bat");
execTask.setFailonerror(true);
execTask.setFailIfExecutionFails(true);
target.addTask(execTask);
target.execute();
}
?
Martin
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> From: ashpub...@mac.com
> To: user@ant.apache.org
> Subject: Re: Calling ant programatically
> Date: Mon, 27 Apr 2009 18:42:04 +0100
>
> Ok here's a little more context.
>
> It seems that the exec/spawn=true command works as expected when
> called on its own directly from java.exe
> but not from an intermediate ant java task, so:
>
> 1. GOOD... When I launch the cmd.exe from a programmatic ant exec
> task, the exec task and java.exe both complete, and the dos window
> remains until I close it ( I've left a large gap in the chain
> description so it lines up with the next example):
>
>
>
> java.exe ---
> >
>
> ant
> -exec (spawn=true) ---> cmd.exe
> (terminates before dos cmd.exe window is closed)
>
>
> 2. BAD... When I insert an programmatic ant java task, the exec task
> appears to complete but the ant java task doesn't. Then when
> I close the dos window the java.exe process completes also. This is
> despite the ant-exec spawn attribute being true.
>
>
>
> java.exe ---> ant-java (fork=true, spawn=false) ---> ant-
> exec (spawn=true) ---> cmd.exe
> (terminates only when dos cmd.exe window is closed)
>
>
> I know it looks a little unusual to have the extra ant-java task in
> there but it is necessary for my use-case and I don't have
> the option to set spawn to true for it. Any ideas?
>
> Many Thanks
> - Ashley
>
>
> On 24 Apr 2009, at 13:20, Ashley Williams wrote:
>
> > Hi,
> >
> > I would like to know how to start a batch file in a new dos window
> > without blocking the java process and so naturally I
> > tried the following that does work:
> >
> > <project name="project" default="target" basedir=".">
> > <target name="target">
> > <exec executable="cmd" spawn="true" dir="${basedir}">
> > <arg value="/c"/>
> > <arg value="start"/>
> > <arg value="test.bat"/>
> > </exec>
> > </target>
> > </project>
> >
> > However I need to be able to do this from java and so I used the
> > following snippet of code that I thought would
> > represent the same functionality as the ant script:
> >
> > public static void main(String[] args) throws IOException {
> > // top level project
> > Project project = new Project();
> > project.setName("project");
> > project.init();
> >
> > // project has a target child
> > Target target = new Target();
> > target.setName("target");
> > project.addTarget(target);
> >
> > // target has an exec child
> > ExecTask execTask = new ExecTask();
> > execTask.setProject(project);
> > target.addTask(execTask);
> > execTask.setExecutable("cmd.exe");
> > execTask.setSpawn(true);
> > execTask.setDir(new File("."));
> > addArg(execTask, "/c");
> > addArg(execTask, "start");
> > addArg(execTask, "test.bat");
> > target.execute();
> > }
> >
> > However it doesn't matter whether or not I set true of false for the
> > spawn property the java process blocks
> > every time until I close the dos window by hand. Is there something
> > else I need to do to more closely
> > replicate the ant script?
> >
> > Cheers
> > - Ashley
> >
> > ---------------------------------------------------------------------
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> > For additional commands, e-mail: user-h...@ant.apache.org
> >
>
>
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