Java Basics Three: Using the velocity template to generate XML

Velocity is a Java-based template engine (template engine). It allows anyone to simply use the template language (template language) to refer to objects defined by Java code.

Now let's take a look at this little example:

1. Create a velocity template to end with the VM, the template file in the example is TAXREPORTXML.VM, which reads as follows:

<?xml version= "1.0" encoding= "Utf-8"?>
$name the parameters that you want the program to pass in.

2. The following is the code for Velocitytest:


Package velocity;
Import Java.io.File;
Import Java.io.FileWriter;
Import java.io.IOException;

Import Java.text.MessageFormat;
Import Org.apache.velocity.Template;
Import Org.apache.velocity.VelocityContext;
Import Org.apache.velocity.app.VelocityEngine;

Import Org.joda.time.DateTime; public class Velocitytest {/** * @param args */public static void main (string[] args) {//Get velocityengine Ve
		Locityengine ve = new Velocityengine ();
        Get template file Template Template = ve.gettemplate ("/SRC/VELOCITY/TAXREPORTXML.VM", "UTF-8");
        Velocitycontext context = new Velocitycontext ();
        Incoming parameter Context.put ("name", "Jacky");
			try {//generate XML FileWriter FileWriter = Getfilewriter ("Velocity_test.xml");
	        Invoke the merge method to pass into the context Template.merge (context, fileWriter);
	        Filewriter.flush ();
		Filewriter.close ();
		catch (IOException e) {e.printstacktrace (); }} private static FileWriter Getfilewriter (String FilenaMe) throws IOException {String FullPath = Messageformat.format ("{1}{0}{2}", File.separator,
        "d://", fileName);
        System.out.println ("fileName =" + FullPath);
        File outputfile = new file (FullPath);
    return new FileWriter (outputfile);
 }

}
 

Look at the results of the operation, in D: velocity_test.xml:


<?xml version= "1.0" encoding= "Utf-8"?>
Parameters have been uploaded to XML, it's easy.