<!-- jfreechart begin --> <dependency> <groupId>org.jfree</groupId> <artifactId>jcommon</artifactId> <version>1.0.24</version> </dependency> <dependency> <groupId>org.jfree</groupId> <artifactId>jfreechart</artifactId> <version>1.5.0</version> </dependency> <!-- jfreechart end -->
package org.lcoil.drools.demo.vo; import lombok.Builder; import lombok.Data; /** * @Classname BarChartVO * @Description TODO * @Date 2022/2/18 8:49 PM * @Created by l-coil */ @Data @Builder public class BarChartVO { private String series; private double value; private String keyRow; }
package org.lcoil.drools.demo.vo; import lombok.AllArgsConstructor; import lombok.Builder; import lombok.Data; import lombok.NoArgsConstructor; import lombok.experimental.Accessors; import java.awt.*; /** * @Classname ColumnarVO * @Description TODO * @Date 2022/2/18 8:48 PM * @Created by l-coil */ @Data @Builder @AllArgsConstructor @NoArgsConstructor @Accessors(chain = true) public class ColumnarVO { /** * y轴坐标 */ private Number value; /** * y轴名称 */ private String key; /** * x轴坐标 */ private String keyName; /** * 柱子颜色 */ private Color color; }
package org.lcoil.drools.demo.jfree; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtils; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.labels.StandardCategoryItemLabelGenerator; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.BarRenderer; import org.jfree.chart.renderer.category.StandardBarPainter; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.lcoil.drools.demo.vo.BarChartVO; import org.lcoil.drools.demo.vo.ColumnarVO; import javax.imageio.ImageIO; import java.awt.*; import java.awt.geom.Rectangle2D; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.List; /** * @Classname BarSpChart * @Description TODO * @Date 2022/2/18 8:48 PM * @Created by l-coil */ public class BarSpChart { /** * @param columnarVos 数据 * @param imgWidth 图片宽度 * @param imageHeight 图片高度 * @param path 生成图片位置 * @return */ public static String createColumnar(List<ColumnarVO> columnarVos, int imgWidth, int imageHeight, String path) {//柱形间的间距 int marginLeft = 10; //最上边刻度距离图片的最顶端的距离 int top = 20; BufferedImage image = new BufferedImage(imgWidth, imageHeight, BufferedImage.TYPE_INT_RGB); Graphics2D graphics = (Graphics2D) image.getGraphics(); graphics.setStroke(new BasicStroke(1f)); graphics.setFont(new Font("微软雅黑", Font.PLAIN, 16)); graphics.setColor(new Color(229, 239, 245)); //设置字体划线平滑 graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); graphics.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT); //计算y轴最大值以及x轴刻度的最大长度 Number max = 0; int maxWidth = 0; for (ColumnarVO c : columnarVos) { if (max.intValue() < c.getValue().intValue()) { max = c.getValue().intValue(); } if (maxWidth < graphics.getFontMetrics().stringWidth(c.getValue().toString())) { maxWidth = graphics.getFontMetrics().stringWidth(c.getValue().toString()); } } //每个刻度的最小像素数 float singleMinHeight = 50; //图片宽度减去x轴距离底部的距离 int realHeight = imageHeight - 30; //y轴距离左侧的距离(除去y轴刻度的宽度) int left = 20; //平分x轴,y轴的值 double singleWidth = (imageHeight - maxWidth - left - marginLeft - columnarVos.size() * marginLeft) / (double) columnarVos.size(); float singleHeight = (float) Math.floor((realHeight - top) / (max.doubleValue() + 1)); //刻度值默认是数组value最大值 int markNumber = max.intValue(); //刻度值默认是1 int markValue = 1; //如果y轴1个刻度的距离小于最小刻度值重新计算刻度以及刻度的最新值 if (singleMinHeight > singleHeight) { singleHeight = singleMinHeight; markNumber = (int) Math.floor((realHeight - top) / singleHeight); markValue = (int) Math.ceil(max.intValue() / ((double) markNumber - 1)); } else { markNumber = markNumber + 1; } graphics.fillRect(0, 0, imgWidth, imageHeight); graphics.setColor(Color.black); int x = 0; //x轴数据以及填充的柱状 for (ColumnarVO c : columnarVos) { graphics.setColor(c.getColor()); float y = singleHeight * (c.getValue().floatValue() / markValue); Rectangle2D rectangle2D = new Rectangle2D.Float(60, maxWidth + left + (float) singleWidth * x + (x + 1) * marginLeft, y, (float) 20.0); graphics.fill(rectangle2D); graphics.setColor(Color.black); int index = strWidthIndex(c.getKeyName(), (int) singleWidth, 0, graphics.getFontMetrics()); graphics.drawString(index < c.getKeyName().length() ? c.getKeyName().substring(0, index) + "..." : c.getKeyName(), 10, maxWidth + left + (int) singleWidth * x + (x + 1) * marginLeft + 16); graphics.drawString(c.getValue() + "", imageHeight - 10, maxWidth + left + (int) singleWidth * x + (x + 1) * marginLeft + 14); x++; } try { File outFile = new File(path); if (!outFile.getParentFile().exists()) { outFile.getParentFile().mkdirs(); } ImageIO.write(image, "jpg", new File(path)); String result = JfreeUtil.getImageBase(path); return result; } catch (Exception e) { e.printStackTrace(); return null; } } /** * 指定字体宽度的计算 * * @param cont * @param width * @param i * @param metrics * @return */ private static int strWidthIndex(String cont, int width, int i, FontMetrics metrics) { if (width > metrics.stringWidth(cont.substring(0, cont.length() - i))) { return cont.length() - i; } else { return strWidthIndex(cont, width, i + 1, metrics); } } /** * 生成水平柱状图柱状图 * * @param barChartVOList * @param tempFilePath * @param width * @param height * @return */ public static String spBarChart(List<BarChartVO> barChartVOList, String tempFilePath, Integer width, Integer height) { JFreeChart chart = ChartFactory.createBarChart("", "", "", createDataset2(barChartVOList), PlotOrientation.HORIZONTAL, //显示方向 false, //是否显示图例如图一的均值、差值 false, // 是否生成工具 false); // 是否生成URL链接 iSetBarSpChart(chart); try { File outFile = new File(tempFilePath); if (!outFile.getParentFile().exists()) { outFile.getParentFile().mkdirs(); } ChartUtils.saveChartAsJPEG(new File(tempFilePath), chart, width, height); } catch (IOException e) { e.printStackTrace(); } String result = JfreeUtil.getImageBase(tempFilePath); return result; } /** * 数据集合 * * @return */ public static CategoryDataset createDataset2(List<BarChartVO> barChartVOList) { DefaultCategoryDataset result = new DefaultCategoryDataset(); for (BarChartVO bc : barChartVOList) { result.addValue(bc.getValue(), bc.getKeyRow(), bc.getSeries()); } return result; } /** * 水平柱状图的样式 * * @param chart */ public static void iSetBarSpChart(JFreeChart chart) { CategoryPlot categoryplot = chart.getCategoryPlot();// 图本身 ValueAxis rangeAxis = categoryplot.getRangeAxis(); CategoryAxis domainAxis = categoryplot.getDomainAxis(); // 设置Y轴的提示文字样式 rangeAxis.setLabelFont(new Font("微软雅黑", Font.PLAIN, 8)); // 设置Y轴刻度线的长度 rangeAxis.setTickMarkInsideLength(10f); // 设置X轴下的标签文字 domainAxis.setLabelFont(new Font("微软雅黑", Font.PLAIN, 10)); // 设置X轴上提示文字样式 domainAxis.setTickLabelFont(new Font("微软雅黑", Font.PLAIN, 10)); domainAxis.setAxisLineVisible(false); domainAxis.setTickMarksVisible(false); NumberAxis numAxis = (NumberAxis) categoryplot.getRangeAxis(); numAxis.setVisible(false); // 自定义柱状图中柱子的样式 BarRenderer brender = (BarRenderer) categoryplot.getRenderer(); Paint[] paints = { new Color(237, 125, 49),//超危颜色 new Color(255, 192, 0),//高危 new Color(112, 173, 71),//中危 new Color(158, 72, 14),//低危 new Color(153, 115, 0)//未知 }; brender.setSeriesPaint(0, paints[0]); brender.setSeriesPaint(1, paints[1]); brender.setSeriesPaint(2, paints[2]); brender.setSeriesPaint(3, paints[3]); brender.setSeriesPaint(4, paints[4]); // 设置柱状图的顶端显示数字 brender.setIncludeBaseInRange(true); brender.setDefaultItemLabelsVisible(true, true); brender.setDefaultItemLabelGenerator(new StandardCategoryItemLabelGenerator()); // 设置柱子为平面图不是立体的 brender.setBarPainter(new StandardBarPainter()); brender.setMaximumBarWidth(0.05); brender.setMinimumBarLength(0.05); // 设置柱状图之间的距离0.1代表10%； brender.setItemMargin(0.02); // 设置柱子的阴影，false代表没有阴影 brender.setShadowVisible(false); categoryplot.setRenderer(brender); // 设置图的背景为白色 categoryplot.setBackgroundPaint(Color.WHITE); // 去掉柱状图的背景边框，使边框不可见 categoryplot.setOutlineVisible(false); // 设置标题的字体样式 chart.getTitle().setFont(new Font("微软雅黑", Font.PLAIN, 10)); } }
package org.lcoil.drools.demo.jfree; import lombok.extern.slf4j.Slf4j; import org.drools.core.io.impl.ClassPathResource; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtils; import org.jfree.chart.JFreeChart; import org.jfree.chart.StandardChartTheme; import org.jfree.chart.labels.StandardPieSectionLabelGenerator; import org.jfree.chart.plot.PiePlot; import org.jfree.data.general.DefaultPieDataset; import org.kie.api.io.Resource; import sun.misc.BASE64Encoder; import java.awt.*; import java.io.*; import java.util.Map; /** * @Classname JfreeUtil * @Description TODO * @Date 2022/2/18 8:48 PM * @Created by l-coil */ @Slf4j public class JfreeUtil { /** * 将图片转化为字节数组 * * @return 字节数组 */ private static byte[] imgToByte(String tempImgPath) { File file = new File(tempImgPath); byte[] buffer = null; try { FileInputStream fis = new FileInputStream(file); ByteArrayOutputStream bos = new ByteArrayOutputStream(1000); byte[] b = new byte[1000]; int n; while ((n = fis.read(b)) != -1) { bos.write(b, 0, n); } fis.close(); bos.close(); buffer = bos.toByteArray(); } catch (IOException e) { log.error(e.getMessage()); } //删除临时文件 file.delete(); return buffer; } public static String pieChart2(String title, Map<String, Integer> datas, int width, int height, String tempImgPath) { //创建主题样式 StandardChartTheme standardChartTheme = new StandardChartTheme("CN"); //设置标题字体 standardChartTheme.setExtraLargeFont(new Font("宋体", Font.BOLD, 20)); //设置图例的字体 standardChartTheme.setRegularFont(new Font("宋体", Font.PLAIN, 15)); //设置轴向的字体 standardChartTheme.setLargeFont(new Font("宋体", Font.PLAIN, 15)); //设置主题样式 ChartFactory.setChartTheme(standardChartTheme); //根据jfree生成一个本地饼状图 DefaultPieDataset pds = new DefaultPieDataset(); datas.forEach(pds::setValue); //图标标题、数据集合、是否显示图例标识、是否显示tooltips、是否支持超链接 JFreeChart chart = ChartFactory.createPieChart(title, pds, true, false, false); //设置抗锯齿 chart.setTextAntiAlias(false); PiePlot plot = (PiePlot) chart.getPlot(); plot.setNoDataMessage("暂无数据"); //忽略无值的分类 plot.setIgnoreNullValues(true); plot.setBackgroundAlpha(0f); //设置标签阴影颜色 plot.setShadowPaint(new Color(255, 255, 255)); //设置标签生成器(默认{0}) plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}({1})/{2}")); try { File outFile = new File(tempImgPath); if (!outFile.getParentFile().exists()) { outFile.getParentFile().mkdirs(); } ChartUtils.saveChartAsJPEG(new File(tempImgPath), chart, width, height); } catch (IOException e1) { log.error("生成饼状图失败！"); } String result = getImageBase(tempImgPath); return result; } //获得图片的base64码 public static String getImageBase(String src) { File file = new File(src); if (!file.exists()) { return ""; } InputStream in = null; byte[] data = null; try { in = new FileInputStream(file); } catch (FileNotFoundException e1) { e1.printStackTrace(); } try { data = new byte[in.available()]; in.read(data); in.close(); } catch (IOException e) { e.printStackTrace(); } BASE64Encoder encoder = new BASE64Encoder(); //删除临时文件 file.delete(); return encoder.encode(data); } public static String getLogoBase64() { Resource resource = new ClassPathResource("template/logo.png"); InputStream in = null; byte[] data = null; try { in = resource.getInputStream(); } catch (IOException e) { e.printStackTrace(); } try { data = new byte[in.available()]; in.read(data); in.close(); } catch (IOException e) { e.printStackTrace(); } BASE64Encoder encoder = new BASE64Encoder(); return encoder.encode(data); } }
package org.lcoil.drools.demo.jfree; import lombok.extern.slf4j.Slf4j; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtils; import org.jfree.chart.JFreeChart; import org.jfree.chart.StandardChartTheme; import org.jfree.chart.labels.StandardPieSectionLabelGenerator; import org.jfree.chart.plot.DefaultDrawingSupplier; import org.jfree.chart.plot.RingPlot; import org.jfree.chart.title.LegendTitle; import org.jfree.chart.title.TextTitle; import org.jfree.chart.ui.RectangleEdge; import org.jfree.data.general.DefaultPieDataset; import org.lcoil.drools.demo.vo.BarChartVO; import java.awt.*; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.text.DecimalFormat; import java.text.NumberFormat; import java.util.List; /** * @Classname RingChart * @Description TODO * @Date 2022/2/18 8:48 PM * @Created by l-coil */ @Slf4j public class RingChart { /** * 生成环状图 * * @param barChartVOList * @param tempImgPath * @param width * @param height * @return */ public static String generateRingChart(List<BarChartVO> barChartVOList, String tempImgPath, Integer width, Integer height) { DefaultPieDataset dataset = getDataSet2(barChartVOList); setTheme(); JFreeChart chart = ChartFactory.createRingChart( "", dataset, true, false, false ); RingPlot plot = (RingPlot) chart.getPlot();//获得图形面板 plot.setIgnoreNullValues(true); //忽略null值 plot.setIgnoreZeroValues(false); //不忽略0值 plot.setBackgroundPaint(Color.WHITE);//设置画布背景颜色 plot.setOutlineVisible(false);//设置绘图区边框是否可见 plot.setLegendLabelGenerator(new StandardPieSectionLabelGenerator("{0} {1} 个", NumberFormat.getNumberInstance(), new DecimalFormat("0.00%"))); //设置图例数据格式 plot.setBackgroundPaint(new Color(253, 253, 253)); //设置标签样式 plot.setLabelFont(new Font("宋体", Font.BOLD, 15)); plot.setSimpleLabels(false); plot.setLabelLinkPaint(Color.WHITE); plot.setLabelOutlinePaint(Color.WHITE); plot.setLabelLinksVisible(false); plot.setLabelShadowPaint(null); plot.setLabelOutlinePaint(new Color(0, true)); plot.setLabelBackgroundPaint(new Color(0, true)); plot.setLabelPaint(Color.WHITE); plot.setSeparatorPaint(Color.WHITE); plot.setShadowPaint(new Color(253, 253, 253)); plot.setSectionDepth(0.35); plot.setStartAngle(90); plot.setDrawingSupplier(new DefaultDrawingSupplier( new Paint[]{ new Color(237, 125, 49),//超危颜色 new Color(255, 192, 0),//高危 new Color(112, 173, 71),//中危 new Color(158, 72, 14),//低危 new Color(153, 115, 0),//未知 new Color(67, 104, 43)//无 }, DefaultDrawingSupplier.DEFAULT_OUTLINE_PAINT_SEQUENCE, DefaultDrawingSupplier.DEFAULT_STROKE_SEQUENCE, DefaultDrawingSupplier.DEFAULT_OUTLINE_STROKE_SEQUENCE, DefaultDrawingSupplier.DEFAULT_SHAPE_SEQUENCE)); plot.setSectionDepth(0.35); //图例样式的设定,图例含有M 和P 方法 LegendTitle legendTitle = chart.getLegend();//获得图例标题 legendTitle.setPosition(RectangleEdge.LEFT);//图例右边显示 legendTitle.setBorder(0, 0, 0, 0);//设置图例上下左右线 legendTitle.setPadding(0, 0, 0, 50); //标题的距离的设定 TextTitle title = chart.getTitle(); //设置标题居左的距离 title.setMargin(0, -20, 0, 0);//标题距离上下左右的距离 FileOutputStream fos_jpg = null; try { try { File outFile = new File(tempImgPath); if (!outFile.getParentFile().exists()) { outFile.getParentFile().mkdirs(); } fos_jpg = new FileOutputStream(tempImgPath); ChartUtils.writeChartAsJPEG(fos_jpg, 1.0f, chart, width, height, null); } catch (IOException e) { log.error(e.getMessage(), e); } } finally { try { fos_jpg.close(); } catch (Exception e) { log.error(e.getMessage(), e); } } String result = JfreeUtil.getImageBase(tempImgPath); return result; } /** * <p>样式设定</p> */ private static void setTheme() { //创建主题样式 StandardChartTheme standardChartTheme = new StandardChartTheme("CN"); //设置标题 standardChartTheme.setExtraLargeFont(new Font("隶书", Font.BOLD, 20)); //设置图例的字体 standardChartTheme.setRegularFont(new Font("宋书", Font.PLAIN, 15)); //设置轴向的字体 standardChartTheme.setLargeFont(new Font("宋书", Font.PLAIN, 15)); ChartFactory.setChartTheme(standardChartTheme); } /* * 基本数据集 */ private static DefaultPieDataset getDataSet2(List<BarChartVO> barChartVOList) { DefaultPieDataset dataset = new DefaultPieDataset(); for (BarChartVO bc : barChartVOList) { dataset.setValue(bc.getSeries(), bc.getValue()); } return dataset; } }