velocity初學指南2

Hello from $name in the $project project.

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import org.apache.velocity.exception.MethodInvocationException;
import org.apache.velocity.exception.ParseErrorException;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.VelocityContext;
import java.io.StringWriter;

/**
 * Created by IntelliJ IDEA.
 * User: LEO
 * Date: 2005-11-22
 * Time: 20:22:41
 * To change this template use File | Settings | File Templates.
 */
public class MyTest {
    public static void main(String[] args) {
        try
        {
            Velocity.init();
        }
        catch(Exception e)
        {
            System.out.println("Problem initializing Velocity : " + e );
            return;
        }

        VelocityContext context = new VelocityContext();

        context.put("name", "Velocity");
        context.put("project", "LEO");

        StringWriter w = new StringWriter();

        try
        {
            Velocity.mergeTemplate("example2.vm","gb2312", context, w );
        }
        catch (Exception e )
        {
            System.out.println("Problem merging template : " + e );
        }

        System.out.println(" template : " + w );

        String s = "We are using $project $name to render this.";
        w = new StringWriter();

        try
        {
            Velocity.evaluate( context, w, "mystring", s );
        }
        catch( ParseErrorException pee )
        {
            System.out.println("ParseErrorException : " + pee );
        }
        catch( MethodInvocationException mee )
        {
            System.out.println("MethodInvocationException : " + mee );
        }
        catch( Exception e )
        {
            System.out.println("Exception : " + e );
        }

        System.out.println(" string : " + w );
    }
}