JasperReport| JasperReport自定义X轴显示值(DomainAxis)

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关于图表部分的实现JasperReport底层是用的Jfreechart实现的,这里也是用的自定义实现图表部分,自定义类继承JRAbstractChartCustomizer重写customize方法,然后将该类导成jar包放进classpaht即可.
注意:
1.关于XY系列的图表在内部已经有了相关的实现.
2.关于CategoryPlot部分的图,这里是以坐标显示(0~23)为例子.

PS: 关于XY系列的图表的显示参数是可以通过在jrxml中配置然后调用JRAbstractChartCustomizer中的get系列方法获取的.

public class YvesCustomizer extends JRAbstractChartCustomizer {@Overridepublic void customize(JFreeChart chart, JRChart jasperChart) {Double minValue = 0.0;//x轴的最小值Double maxValue = 24.0;//x轴的最大值Double tickUnit = 1.0;//间隔单元if (chart.getPlot() instanceof XYPlot) {/* 针对XY的图 */XYPlot plot = (XYPlot) chart.getPlot();ValueAxis valueAxis = plot.getDomainAxis();if (valueAxis != null) {if (minValue != null || maxValue != null) {valueAxis.setRange(minValue == null ? valueAxis.getRange().getLowerBound() : minValue, maxValue == null ? valueAxis.getRange().getUpperBound() : maxValue);}if (valueAxis instanceof NumberAxis) {NumberAxis numAxis = (NumberAxis) valueAxis;numAxis.setTickUnit(new NumberTickUnit(tickUnit));}}} else if (chart.getPlot() instanceof CategoryPlot) {/** 针对普通的柱状图,线图,面积图...*/CategoryPlot plot = (CategoryPlot) chart.getPlot();// 参数解释: value(Y轴), series,category(x轴)// dataset.setValue(value, rowKey, columnKey);/* 设置X轴 */CategoryAxis axis = plot.getDomainAxis();DefaultCategoryDataset dataset = (DefaultCategoryDataset) plot.getDataset();List columnKeys = dataset.getColumnKeys();List rowKeys = dataset.getRowKeys();DefaultCategoryDataset result = new DefaultCategoryDataset();for (int i = 0; i < rowKeys.size(); i++) {Comparable rowKey = (Comparable) rowKeys.get(i);setDataSet(result, rowKey);}// 更新数据for (int i = 0; i < columnKeys.size(); i++) {for (int j = 0; j < rowKeys.size(); j++) {result.setValue(dataset.getValue((Comparable) rowKeys.get(j), (Comparable) columnKeys.get(i)), (Comparable) rowKeys.get(j), (Comparable) columnKeys.get(i));}}plot.setDataset(result);} else if (chart.getPlot() instanceof PiePlot) {}}private static void setDataSet(DefaultCategoryDataset dataset, Comparable rowKey) {dataset.setValue(null, rowKey, new Integer(0));dataset.setValue(null, rowKey, new Integer(1));dataset.setValue(null, rowKey, new Integer(2));dataset.setValue(null, rowKey, new Integer(3));dataset.setValue(null, rowKey, new Integer(4));dataset.setValue(null, rowKey, new Integer(5));dataset.setValue(null, rowKey, new Integer(6));dataset.setValue(null, rowKey, new Integer(7));dataset.setValue(null, rowKey, new Integer(8));dataset.setValue(null, rowKey, new Integer(9));dataset.setValue(null, rowKey, new Integer(10));dataset.setValue(null, rowKey, new Integer(11));dataset.setValue(null, rowKey, new Integer(12));dataset.setValue(null, rowKey, new Integer(13));dataset.setValue(null, rowKey, new Integer(14));dataset.setValue(null, rowKey, new Integer(15));dataset.setValue(null, rowKey, new Integer(16));dataset.setValue(null, rowKey, new Integer(17));dataset.setValue(null, rowKey, new Integer(18));dataset.setValue(null, rowKey, new Integer(19));dataset.setValue(null, rowKey, new Integer(20));dataset.setValue(null, rowKey, new Integer(21));dataset.setValue(null, rowKey, new Integer(22));dataset.setValue(null, rowKey, new Integer(23));}
}