如何顯示存儲在數據庫中Timseries圖

Question

我正在開發使用Jfree庫中的時間序列圖時間。我在數據庫中存儲時間。我想在圖表上顯示這些時間。我怎樣才能做到這一點。 我有具有類似於價格，成交量的日期和時間列一個表的商品。我正在繪製數據庫中的價格和交易量圖表。我想要在X軸上繪製數據庫的時間。現在它給了我隨機時間。我想要我的數據庫時間。 我有其中我正在存儲事件的時間的表。所以我想在時間序列圖上的X軸上顯示那個時間。

這裏是我的代碼

/* 
* commoditychart.java 
*/ 
package com.das.dbmodule; 

import com.das.dbmodule.Dbconnection; 
import org.jfree.chart.ChartFactory; 
import org.jfree.chart.ChartRenderingInfo; 
import org.jfree.chart.ChartUtilities; 
import org.jfree.chart.JFreeChart; 
import org.jfree.chart.axis.NumberAxis; 
import org.jfree.chart.axis.ValueAxis; 
import org.jfree.chart.entity.StandardEntityCollection; 
import org.jfree.chart.plot.XYPlot; 
import org.jfree.chart.renderer.xy.XYAreaRenderer; 
import org.jfree.data.time.Hour; 
import org.jfree.data.time.RegularTimePeriod; 
import org.jfree.data.time.TimeSeries; 
import org.jfree.data.time.TimeSeriesCollection; 
import org.jfree.data.xy.XYDataset; 
import java.awt.*; 
import java.io.File; 
import java.io.IOException; 
import java.sql.*; 
import java.text.SimpleDateFormat; 
import java.util.Vector; 
import javax.swing.*; 
import org.jfree.chart.axis.DateAxis; 
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; 

public class commoditychart { 

    private static final String CHARTDIR = ""; 
    String theResult = ""; 

    public commoditychart() { 
    } 

    public String produceAllCharts(String cmname, String today, String imagepath) 
     throws ClassNotFoundException, SQLException { 
     int count = 4, 
      i = 0, 
      id = 2, 
      x = 0; 
     String str = cmname; 
     String tsym = null, 
      commodity = cmname, 
      path = ""; 
     Vector allSyms = null; 
     ResultSet results = null, 
      results1 = null; 
     JFrame frame = null; 
     File ifle = null; 
     String chartFilename = null; 
     Dbconnection dbobject = new Dbconnection(); 
     System.out.println("In commodity"); 
     dbobject.Dbconnect(); 
     System.out.println("call con"); 

     String startingtime = "00:00:00"; 
     String endingtime = "23:59:59"; 

     tsym = str; 

     try { 
      System.out.println(" inside commodity "); 
      results1 = dbobject.execSQL("" 
       + "Select open_contract_vol, open_contract_price , Date, Time " 
       + "from commodity where com_name='" + cmname 
       + "' and Date='" + today 
       + "' and Time between '" + startingtime 
       + "' and '" + endingtime + "'"); 

      // results1 = DbObject.execSQL(query);// here the query get executed and the Resultset is populated. 
      int count1 = 0; 
      while (results1.next()) { 
       count1++;// count1 is having total number of records that were feteched from the query. 
      } 

      results1.first(); 
      System.out.println("count1 --- = " + count1); 
      if (count1 > 0) { 
       float[] dPrice = new float[count1]; 
       float[] dVolume = new float[count1]; 
       java.util.Date[] oDateTime = new java.util.Date[count1]; 

       for (i = 0; i < count1; i++) { 
        dVolume[i] = results1.getFloat("open_contract_vol"); 
        dPrice[i] = results1.getFloat("open_contract_price"); 
        oDateTime[i] = results1.getDate("Date"); 
        System.out.println("price ::" + dPrice[i] + " vol :: " 
         + dVolume[i] + " date :: " + oDateTime[i]); 
        results1.next(); 
       } 

       XYDataset xDataSet = createPriceDataset(dPrice); 
       XYDataset yDataSet = createVolumeDataset(dVolume); 
       JFreeChart chart = createChart(xDataSet, yDataSet, dPrice, dVolume, today); 
       ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection()); 

       // ifle = new File("d:\\javapractice/marketpoint/web/"+tsym+".png"); 
       File ifle2 = new File(imagepath + tsym + ".png"); 

       // path = ifle.getAbsolutePath(); 
       path = ifle2.getAbsolutePath(); 
       System.out.println("new path " + path); 

       try { 
        ChartUtilities.saveChartAsPNG(ifle2, chart, 600, 500, info); 
       } catch (IOException ex) { 
        ex.printStackTrace(); 
       } 

       chartFilename = this.CHARTDIR + tsym + ".png"; 
       count++; 
      } 
     } catch (Exception oError) { 
      System.out.println("Here is the error :" + oError.getMessage()); 
     } 
     return path; 
    } 

    private XYDataset createPriceDataset(final float[] dPrice) { 
     final TimeSeriesCollection dataset = new TimeSeriesCollection(); 
     final TimeSeries s1 = new TimeSeries("Price (US $)", Hour.class); 

     // RegularTimePeriod start = new Minute(); 
     RegularTimePeriod start = new Hour(); 

     for (int i = 0; i < dPrice.length; i++) { 
      s1.add(start, dPrice[i]); 

      // System.out.println("time start is "+ start); 
      start = start.next(); 
      start = start.next(); 
      start = start.next(); 
      start = start.next(); 
      start = start.next(); 
      start = start.next(); 
     } 
     dataset.addSeries(s1); 
     return dataset; 
    } 

    private JFreeChart createChart(XYDataset xDataSet, XYDataset yDataSet, 
     final float[] dPrice, final float[] dVolume, 
     String date) { 

     // final XYDataset direction = createPriceDataset(600); 
     // Date on which the chart is created 
     final JFreeChart chart = ChartFactory.createTimeSeriesChart("Time", date, 
      "Price(US $)", xDataSet, true, true, false); 
     final XYPlot plot = chart.getXYPlot(); 

     plot.getDomainAxis().setLowerMargin(0.0); 
     plot.getDomainAxis().setUpperMargin(0.0); 

     float maxprice = 0; 
     float maxvolume = 0; 

     for (int j = 0; j < dPrice.length; j++) { 
      if (dPrice[j] > maxprice) { 
       maxprice = dPrice[j]; 
       // System.out.println("maxprice is "+ maxprice); 
      } 
     } 

     for (int j = 0; j < dVolume.length; j++) { 
      if (dVolume[j] > maxvolume) { 
       maxvolume = dVolume[j]; 

       XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(); 
       renderer.setSeriesLinesVisible(0, true); 
       plot.setRenderer(renderer); 
      } 
     } 

     final ValueAxis axis1 = new NumberAxis("Price(US $)"); 
     axis1.setRange(0.0, maxprice + 40); 

     // add the wind force with a secondary dataset/renderer/axis 
     plot.setRangeAxis(axis1); 

     final XYAreaRenderer renderer2 = new XYAreaRenderer(); 
     final ValueAxis axis2 = new NumberAxis("Volume(Carton)"); 

     axis2.setRange(0.0, maxvolume + 40); 
     renderer2.setSeriesPaint(0, new Color(0, 0, 255, 128)); 
     plot.setDataset(2, yDataSet); 
     plot.setRenderer(2, renderer2); 
     plot.setRangeAxis(2, axis2); 
     plot.mapDatasetToRangeAxis(2, 2); 
     chart.setBorderVisible(true); 
     final DateAxis axis = (DateAxis) plot.getDomainAxis(); 
     axis.setDateFormatOverride(new SimpleDateFormat("hh:mma")); 
     return chart; 
    } 

    private XYDataset createVolumeDataset(float[] dVolume) { 
     final TimeSeriesCollection dataset = new TimeSeriesCollection(); 
     final TimeSeries s1 = new TimeSeries("Volume(Carton) ", Hour.class); 
     RegularTimePeriod start = new Hour(); 
     System.out.println("Strta:::" + start); 
     for (int i = 0; i < dVolume.length; i++) { 
      s1.add(start, dVolume[i]); 
      start = start.next(); 
      start = start.next(); 
      start = start.next(); 
      start = start.next(); 
      start = start.next(); 
      start = start.next(); 
     } 
     dataset.addSeries(s1); 
     return dataset; 
    } 

    public static void main(String[] args) throws ClassNotFoundException, SQLException { 
     commoditychart chartAgent = new commoditychart(); 
     chartAgent.produceAllCharts("ac", "2012-04-02", "E:/images/"); 
     //System.exit(0); 
    } 
} 

我希望我的圖表應反映數據庫時機，因爲它反映了價格和交易量。請幫幫我。謝謝。我嘗試了很多。但沒有得到如何去做。請有人知道它幫助我。我有我的最後期限。

Answer 1

OLHE O EXEMPLO ABAIXO: 

/* =========================================================== 
* JFreeChart : a free chart library for the Java(tm) platform 
* =========================================================== 
* 
* (C) Copyright 2000-2013, by Object Refinery Limited and Contributors. 
* 
* Project Info: http://www.jfree.org/jfreechart/index.html 
* 
* This library is free software; you can redistribute it and/or modify it 
* under the terms of the GNU Lesser General Public License as published by 
* the Free Software Foundation; either version 2.1 of the License, or 
* (at your option) any later version. 
* 
* This library is distributed in the hope that it will be useful, but 
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
* License for more details. 
* 
* You should have received a copy of the GNU Lesser General Public 
* License along with this library; if not, write to the Free Software 
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 
* USA. 
* 
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
* Other names may be trademarks of their respective owners.] 
* 
* ------------------------- 
* TimeSeriesChartDemo1.java 
* ------------------------- 
* (C) Copyright 2003-2011, by Object Refinery Limited and Contributors. 
* 
* Original Author: David Gilbert (for Object Refinery Limited); 
* Contributor(s): ; 
* 
* Changes 
* ------- 
* 09-Mar-2005 : Version 1, copied from the demo collection that ships with 
*    the JFreeChart Developer Guide (DG); 
* 
*/ 

package org.jfree.chart.demo; 

import java.awt.Color; 
import java.text.SimpleDateFormat; 

import javax.swing.JPanel; 

import org.jfree.chart.ChartFactory; 
import org.jfree.chart.ChartPanel; 
import org.jfree.chart.JFreeChart; 
import org.jfree.chart.StandardChartTheme; 
import org.jfree.chart.axis.DateAxis; 
import org.jfree.chart.plot.XYPlot; 
import org.jfree.chart.renderer.xy.XYItemRenderer; 
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; 
import org.jfree.data.time.Month; 
import org.jfree.data.time.TimeSeries; 
import org.jfree.data.time.TimeSeriesCollection; 
import org.jfree.data.xy.XYDataset; 
import org.jfree.ui.ApplicationFrame; 
import org.jfree.ui.RectangleInsets; 
import org.jfree.ui.RefineryUtilities; 

/** 
* An example of a time series chart. For the most part, default settings are 
* used, except that the renderer is modified to show filled shapes (as well as 
* lines) at each data point. 
*/ 
public class TimeSeriesChartDemo1 extends ApplicationFrame { 

    private static final long serialVersionUID = 1L; 

    { 
     // set a theme using the new shadow generator feature available in 
     // 1.0.14 - for backwards compatibility it is not enabled by default 
     ChartFactory.setChartTheme(new StandardChartTheme("JFree/Shadow", 
       true)); 
    } 

    /** 
    * A demonstration application showing how to create a simple time series 
    * chart. This example uses monthly data. 
    * 
    * @param title the frame title. 
    */ 
    public TimeSeriesChartDemo1(String title) { 
     super(title); 
     ChartPanel chartPanel = (ChartPanel) createDemoPanel(); 
     chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); 
     setContentPane(chartPanel); 
    } 

    /** 
    * Creates a chart. 
    * 
    * @param dataset a dataset. 
    * 
    * @return A chart. 
    */ 
    private static JFreeChart createChart(XYDataset dataset) { 

     JFreeChart chart = ChartFactory.createTimeSeriesChart(
      "Legal & General Unit Trust Prices", // title 
      "Date",    // x-axis label 
      "Price Per Unit", // y-axis label 
      dataset,   // data 
      true,    // create legend? 
      true,    // generate tooltips? 
      false    // generate URLs? 
     ); 

     chart.setBackgroundPaint(Color.white); 

     XYPlot plot = (XYPlot) chart.getPlot(); 
     plot.setBackgroundPaint(Color.lightGray); 
     plot.setDomainGridlinePaint(Color.white); 
     plot.setRangeGridlinePaint(Color.white); 
     plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0)); 
     plot.setDomainCrosshairVisible(true); 
     plot.setRangeCrosshairVisible(true); 

     XYItemRenderer r = plot.getRenderer(); 
     if (r instanceof XYLineAndShapeRenderer) { 
      XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) r; 
      renderer.setBaseShapesVisible(true); 
      renderer.setBaseShapesFilled(true); 
      renderer.setDrawSeriesLineAsPath(true); 
     } 

     DateAxis axis = (DateAxis) plot.getDomainAxis(); 
     axis.setDateFormatOverride(new SimpleDateFormat("MMM-yyyy")); 

     return chart; 

    } 

    /** 
    * Creates a dataset, consisting of two series of monthly data. 
    * 
    * @return The dataset. 
    */ 
    private static XYDataset createDataset() { 

     TimeSeries s1 = new TimeSeries("L&G European Index Trust"); 
     s1.add(new Month(2, 2001), 181.8); 
     s1.add(new Month(3, 2001), 167.3); 
     s1.add(new Month(4, 2001), 153.8); 
     s1.add(new Month(5, 2001), 167.6); 
     s1.add(new Month(6, 2001), 158.8); 
     s1.add(new Month(7, 2001), 148.3); 
     s1.add(new Month(8, 2001), 153.9); 
     s1.add(new Month(9, 2001), 142.7); 
     s1.add(new Month(10, 2001), 123.2); 
     s1.add(new Month(11, 2001), 131.8); 
     s1.add(new Month(12, 2001), 139.6); 
     s1.add(new Month(1, 2002), 142.9); 
     s1.add(new Month(2, 2002), 138.7); 
     s1.add(new Month(3, 2002), 137.3); 
     s1.add(new Month(4, 2002), 143.9); 
     s1.add(new Month(5, 2002), 139.8); 
     s1.add(new Month(6, 2002), 137.0); 
     s1.add(new Month(7, 2002), 132.8); 

     TimeSeries s2 = new TimeSeries("L&G UK Index Trust"); 
     s2.add(new Month(2, 2001), 129.6); 
     s2.add(new Month(3, 2001), 123.2); 
     s2.add(new Month(4, 2001), 117.2); 
     s2.add(new Month(5, 2001), 124.1); 
     s2.add(new Month(6, 2001), 122.6); 
     s2.add(new Month(7, 2001), 119.2); 
     s2.add(new Month(8, 2001), 116.5); 
     s2.add(new Month(9, 2001), 112.7); 
     s2.add(new Month(10, 2001), 101.5); 
     s2.add(new Month(11, 2001), 106.1); 
     s2.add(new Month(12, 2001), 110.3); 
     s2.add(new Month(1, 2002), 111.7); 
     s2.add(new Month(2, 2002), 111.0); 
     s2.add(new Month(3, 2002), 109.6); 
     s2.add(new Month(4, 2002), 113.2); 
     s2.add(new Month(5, 2002), 111.6); 
     s2.add(new Month(6, 2002), 108.8); 
     s2.add(new Month(7, 2002), 101.6); 

     // ****************************************************************** 
     // More than 150 demo applications are included with the JFreeChart 
     // Developer Guide...for more information, see: 
     // 
     // > http://www.object-refinery.com/jfreechart/guide.html 
     // 
     // ****************************************************************** 

     TimeSeriesCollection dataset = new TimeSeriesCollection(); 
     dataset.addSeries(s1); 
     dataset.addSeries(s2); 

     return dataset; 

    } 

    /** 
    * Creates a panel for the demo (used by SuperDemo.java). 
    * 
    * @return A panel. 
    */ 
    public static JPanel createDemoPanel() { 
     JFreeChart chart = createChart(createDataset()); 
     ChartPanel panel = new ChartPanel(chart); 
     panel.setFillZoomRectangle(true); 
     panel.setMouseWheelEnabled(true); 
     return panel; 
    } 

    /** 
    * Starting point for the demonstration application. 
    * 
    * @param args ignored. 
    */ 
    public static void main(String[] args) { 

     TimeSeriesChartDemo1 demo = new TimeSeriesChartDemo1(
       "Time Series Chart Demo 1"); 
     demo.pack(); 
     RefineryUtilities.centerFrameOnScreen(demo); 
     demo.setVisible(true); 

    } 

}