取得したAmazonランクを表示する

AmazonRankFrame.java

/*
 * Amazonランキングのグラフを表示する
 * JFreeChartが必要。コンパイルはJavaSE7で。
 */
package amazonrank;

import java.awt.Font;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.URL;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.general.SeriesException;
import org.jfree.data.time.Hour;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;

/**
 * Amazonランキングのグラフを表示する
 * @author naoki
 */
public class AmazonRankFrame extends javax.swing.JFrame {
    String dataFile = "amazon.txt";
    String pngFile = "amazon.png";

    /**
     * Creates new form AmazonRankFrame
     */
    public AmazonRankFrame() {
        try {
            initComponents();
            List<String> lines = Files.readAllLines(
                    Paths.get(dataFile),
                    Charset.defaultCharset());
            
            Map<String, TimeSeries> tss = new HashMap<>();
            for(String line : lines){
                String[] items = line.split(" ", 5);
                Date d = parseDate(items[0], items[1]);
                String url = items[2];
                String rankStr = items[3];
                int rank = Integer.parseInt(rankStr.replace(",", ""));
                //系列に追加
                TimeSeries t = tss.get(url);
                if(t == null){
                    String title = items[4];
                    t = new TimeSeries(title);
                    tss.put(url, t);
                }
                try{
                    t.add(new Hour(d), rank);
                }catch(SeriesException ex){
                    System.out.println("error:" + line);
                }
            }
            
            //系列をグラフに追加
            TimeSeriesCollection data = new TimeSeriesCollection();
            for(TimeSeries ts : tss.values()){
                data.addSeries(ts);
            }
            
            //グラフの準備
            JFreeChart chart = ChartFactory.createTimeSeriesChart(
                    "Amazon順位", "日時", "順位", data, true, true, true);
            XYPlot xyPlot = chart.getXYPlot();
            Font f = new Font(Font.SANS_SERIF, Font.PLAIN, 14);
            xyPlot.getDomainAxis().setLabelFont(f);
            xyPlot.getRangeAxis().setLabelFont(f);
            //xyPlot.getRenderer().setSeriesVisible(0, false);
            chart.getLegend().setItemFont(f.deriveFont((float)10));
            chart.getTitle().setFont(f.deriveFont(Font.BOLD, 16));
            //画像ファイルを作成
            BufferedImage img = chart.createBufferedImage(450, 400);
            ImageIO.write(img, "png", new File(pngFile));
            //画面に配置
            jPanel1.add(new ChartPanel(chart));
        } catch (ParseException | IOException ex) {
            Logger.getLogger(AmazonRankFrame.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public static Date parseDate(String day, String time) throws ParseException{
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MMM/dd HH:mm:ss", Locale.US);
        sdf.setTimeZone(TimeZone.getTimeZone("PDT"));
        Date d = sdf.parse(day + " " + time);
        return d;
    }
    
    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setLayout(new java.awt.BorderLayout());
        getContentPane().add(jPanel1, java.awt.BorderLayout.CENTER);

        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-402)/2, (screenSize.height-351)/2, 402, 351);
    }// </editor-fold>

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {

        /*
         * Create and display the form
         */
        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {
                new AmazonRankFrame().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JPanel jPanel1;
    // End of variables declaration
}