#19 Call build.xml from Java code

[liu xue]

Hello,

I would like to call build.xml file from a Java program. I am new Ant user. I found a sample code below:

        File buildFile = new File("build.xml");
        Project p = new Project();
        p.setUserProperty("ant.file", buildFile.getAbsolutePath());
        DefaultLogger consoleLogger = new DefaultLogger();
        consoleLogger.setErrorPrintStream(System.err);
        consoleLogger.setOutputPrintStream(System.out);
        consoleLogger.setMessageOutputLevel(Project.MSG_INFO);
        p.addBuildListener(consoleLogger);

        try {
            p.fireBuildStarted();
            p.init();
            ProjectHelper helper = ProjectHelper.getProjectHelper();
            p.addReference("ant.projectHelper", helper);
            helper.parse(p, buildFile);
            p.executeTarget(p.getDefaultTarget());
            p.fireBuildFinished(null);
        } catch (BuildException e) {
            p.fireBuildFinished(e);
        }

But it gives me an error message as

BUILD FAILED
F:\workspace\Eclipse-Playground\de.itesys.xslt.docbook\build.xml:7: Cannot find F:\workspace\Eclipse-Playground\de.itesys.xslt.docbook\${net.sourceforge.dep4e.resources}\ant\docbook_5-0.xml imported from F:\workspace\Eclipse-Playground\de.itesys.xslt.docbook\build.xml

Total time: 0 seconds

Therefore I would like to know what is the right way to call build.xml file. Thank you.
In the attachment you can find an example project from DEP4E.