generatortester.java

openmap java写的开源数字地图程序. 用applet实现,可以像google map 那样放大缩小地图.

// **********************************************************************
// 
// <copyright>
// 
//  BBN Technologies
//  10 Moulton Street
//  Cambridge, MA 02138
//  [phone]
// 
//  Copyright (C) BBNT Solutions LLC. All rights reserved.
// 
// </copyright>
// **********************************************************************
// 
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/image/GeneratorTester.java,v $
// $RCSfile: GeneratorTester.java,v $
// $Revision: 1.4.2.2 $
// $Date: 2005/08/09 17:59:09 $
// $Author: dietrick $
// 
// **********************************************************************

package com.bbn.openmap.image;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Properties;

import com.bbn.openmap.Environment;
import com.bbn.openmap.util.Debug;

/**
 * A test class to play around with the image server.
 * 
 * @deprecated uses ImageServer methods no longer supported.
 */
public class GeneratorTester implements ImageReceiver {

    ImageServer server;
    String propertiesURLString = null;
    String fileName = null;
    Properties props = null;

    public GeneratorTester(String[] args) {

        props = System.getProperties();
        Debug.init(props);
        parseArgs(args);
        try {
            URL propsURL = new URL(propertiesURLString);
            Environment.init(props);
            loadProperties(propsURL, props);
        } catch (MalformedURLException mul) {
            System.out.println("GeneratorTester: Malformed URL");
            return;
        }

//        Projection proj = ProjectionFactory.makeProjection(CADRG.class,
//                42.0f,
//                -72.0f,
//                5000000f,
//                500,
//                500);

        server = new ImageServer(props);

//      server.createImage(proj, this);
    }

    public void receiveImageData(byte[] bytes) {
        try {
            File f = new File(fileName);
            OutputStream writef = new FileOutputStream(f);
            writef.write(bytes);
            writef.close();
            System.out.println(fileName + " JPEG written.");
        } catch (IOException ioe) {
            System.out.println("No JPEG written due to IOExeception.");
        }
        System.exit(0);
    }

    /**
     * Test the image generator.
     *  
     */
    public static void main(String[] args) {
        new GeneratorTester(args);
    }

    /**
     * Loads properties from a java resource. This will load the named
     * resource identifier into the given properties instance.
     * 
     * @param props the Properties instance to receive the properties
     * @param url the resource to load
     */
    public boolean loadProperties(URL url, Properties props) {
        try {
            InputStream propsIn = url.openStream();
            props.load(propsIn);
            return true;
        } catch (java.io.IOException e) {
            return false;
        }
    }

    /**
     */
    public void parseArgs(String[] args) {
        for (int i = 0; i < args.length; i++) {
            if (args[i].equalsIgnoreCase("-url")) {
                propertiesURLString = args[++i];
            } else if (args[i].equalsIgnoreCase("-outputFile")) {
                fileName = args[++i];
            } else if (args[i].equalsIgnoreCase("-h")) {
                printHelp();
            }
        }

        if (propertiesURLString == null || fileName == null) {
            printHelp();
        }
    }

    /**
     * <b>printHelp </b> should print a usage statement which reflects
     * the command line needs of the tester.
     */
    public void printHelp() {
        System.err.println("usage: java GeneratorTester -url <URL for properties file> -outputFile <path to output file>");
        System.exit(1);
    }

}