How to capture Ant output to a string variable

[sreenivas jeenor]

Hi ,


I am working on ANT.my requirement is to display Ant output on HTML/Jsp page.

normally i am using Ant project to execute the build file.

here is the code-my program runs and shows ant build results/errors in the console,but i want them to be stored on a string and then use that in jsp page.

 File buildFile = new File("D:\\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);
			  	}

help me

Thanks
Srinivas

[Peter Johnson]

Did you try replacing the System.out and System.err in lines 5 and 6 with a StringWriter?

[sreenivas jeenor]

lines 5 and 6 accept only PrintStream object.

[Peter Johnson]

Declare a ByteArrayOutputStream and wrap it in a PrintStream. Once done, use toByteArray() to get the output and create a String from that.