JFreeChart

/**
 * 定义图表实现类所具有的属性及方法
 * @author zhanggendong
 *
 */
public abstract class ChartApplet extends JApplet implements GenerateChart {
	/** UID */
	private static final long serialVersionUID = -804138993151875410L;
	/** 数列 */
	protected Series series;
	/** 数据集 */
	protected Dataset dataset;
	/** 描绘器 */
	protected AbstractRenderer renderer;
	/** chart */
	protected JFreeChart chart;
	/** plot */
	protected Plot plot;
	/** panel */
	protected ChartPanel panel;
	/** 横轴 */
	protected Axis domainAxis;
	/** 纵轴 */
	protected Axis rangeAxis;
	/** 十字线横线 */
	protected Crosshair domainCrosshair;
	/** 十字线竖线 */
	protected Crosshair rangeCrosshair;
	/**
	 * 构造十字线
	 */
	public void buildCrosshair() {
		domainCrosshair = new Crosshair(0D);
		domainCrosshair.setPaint(Color.WHITE);
		domainCrosshair.setLabelOutlinePaint(Color.WHITE);
		domainCrosshair.setLabelBackgroundPaint(Color.decode("#7200b5"));
		domainCrosshair.setLabelVisible(true);
		domainCrosshair.setLabelAnchor(RectangleAnchor.BOTTOM_RIGHT);
		rangeCrosshair = new Crosshair(0D);
		rangeCrosshair.setPaint(Color.WHITE);
		rangeCrosshair.setLabelOutlinePaint(Color.WHITE);
		rangeCrosshair.setLabelVisible(true);
		rangeCrosshair.setLabelBackgroundPaint(Color.decode("#7200b5"));
	}
	/**
	 * 设定图表主题（显示效果）
	 */
	public void configChartTheme() {
		// 设置字体显示
		StandardChartTheme theme = new StandardChartTheme("unicode") {
			private static final long serialVersionUID = -3564924743507231002L;

			public void apply(JFreeChart chart) {
				chart.getRenderingHints().put(
						RenderingHints.KEY_TEXT_ANTIALIASING,
						RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
				super.apply(chart);
			}
		};
		theme.setExtraLargeFont(new Font("宋体", Font.PLAIN, 20));
		theme.setLargeFont(new Font("宋体", Font.PLAIN, 14));
		theme.setRegularFont(new Font("宋体", Font.PLAIN, 12));
		theme.setSmallFont(new Font("宋体", Font.PLAIN, 10));
		theme.setAxisLabelPaint(Color.decode("#818181"));
		theme.setTickLabelPaint(Color.decode("#818181"));
		// 蓝-黑Plot背景色渐变
		Paint plotBgPaint = new GradientPaint(0.0F, 0.0F, Color
				.decode("#000000"), 0.0F, 200.0F, Color.decode("#364e6e"));
		theme.setPlotBackgroundPaint(plotBgPaint);
		ChartFactory.setChartTheme(theme);
	}
	/**
	 * 绘制图表通用方法
	 */
	public void drawChart() {
		buildDataset();
		buildLabel();
		buildPlot();
		buildChart();
		configChart();
		buildPanel();
		add(panel);
	}
	/**
	 * 导出excel图片方法（JS调用）
	 */
	public void exportPIC(String fileName, String sheetName, double width, double height) {
		Chart2Excel ce = new Chart2Excel();
		ce.setApplet(this);
		ce.setFileName(fileName);
		ce.setSheetName(sheetName);
		ce.setWidth(width);
		ce.setHeight(height);
		ce.excel4JS();
	}
}