Jfree 数据可视化

大家好，我是曲不成歌，今天和大家分享下Jfree结合Itext生成一张PDF图表。
先分享下一个英文句子 I guess sometimes you don’t know what you want because you don’t know it exists. <我猜有时候你不知道自己想要什么，是因为你并不知道这东西的存在>
下图是生成的双页PDF展示

需要导入的jar

业务类（数据模板）

package industryStationExportDemo;import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.PieDataset;import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Image;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;public class Demo {static BaseFont bfChinese = null;static Font title_font = null;static Font key_font = null;static Font normal_font = null;static Font mini_font = null;static Font en_font = null;public static void main(String[] args) {// TODO Auto-generated method stubtry {exportPDF("E:/test/test11.pdf");} catch (Exception e) {e.printStackTrace();} }static{try {bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);} catch (DocumentException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}title_font = new Font(bfChinese,15,Font.BOLD);key_font = new Font(bfChinese,10,Font.BOLD);normal_font = new Font(bfChinese,10,Font.NORMAL);mini_font = new Font(bfChinese,6,Font.NORMAL);}@SuppressWarnings("rawtypes")private static void exportPDF(String filepath) throws Exception {Document document = new Document();File file = new File(filepath);FileOutputStream fos = null;if(!file.exists()){file.createNewFile();fos = new FileOutputStream(file);}PdfWriter.getInstance(document, fos);document.open();//获取模拟数据部分Map data = getTestData();String pdfName = (String) data.get("pdfName");List datas = (List) data.get("datas");//填充pdf数据Paragraph blank = new Paragraph(" ");//创建一个空的段落，备用Paragraph p_name = new Paragraph(pdfName,title_font);//PDF主标题p_name.setAlignment(Element.ALIGN_CENTER);//居中对齐document.add(p_name);//将段落添加到document对象中document.add(blank);//添加空白段落，避免上下文之间拥挤document.add(blank);Map data0 = (Map) datas.get(0);addFirstTable(document,data0);//添加第一个表格document.add(blank);Map data1 = (Map) datas.get(1);addSecondChart(document,data1);//添加第二个chart图表document.add(blank);Map data2 = (Map) datas.get(2);addThirdChart(document,data2);//添加第三个chart图表document.add(blank);Map data3 = (Map) datas.get(3);addFourthChart(document,data3);//添加第四个chart图表document.add(blank);Map data4 = (Map) datas.get(4);addFifthTable(document,data4);//添加第五个chart图表document.close();//关闭document对象}/*** 这里使用内外嵌套表格实现，外表格1行 4列，内表格2行 5列* @param document* @param data * @throws MalformedURLException* @throws IOException* @throws DocumentException*/private static void addFirstTable(Document document,Map data) throws MalformedURLException, IOException, DocumentException{String[] head = (String[]) data.get("head");String[] body = (String[]) data.get("body");String[] image = (String[]) data.get("image");document.add(new Paragraph(" ",normal_font));PdfPTable table_out = new PdfPTable(4);//创建一个4列的表格for(int i=0;i<4;i++){PdfPCell cell_out = new PdfPCell();//用来装4个内置表格cell_out.setBorderWidth(0);//设置表格边框线厚度为0 即不显示边框cell_out.setUseAscender(true);//开启设置权限，否则下面设置的对齐会无效cell_out.setUseDescender(true);cell_out.setVerticalAlignment(Element.ALIGN_MIDDLE);//垂直居中cell_out.setHorizontalAlignment(Element.ALIGN_CENTER);//水平居中PdfPTable table_in = new PdfPTable(5);//创建一个内置的5列的表格for(int j=0;j<7;j++){//内置表格共7个格子PdfPCell cell_in = new PdfPCell();cell_in.setUseAscender(true);cell_in.setUseDescender(true);cell_in.setHorizontalAlignment(Element.ALIGN_CENTER);cell_in.setVerticalAlignment(Element.ALIGN_MIDDLE);Paragraph p1 = null;/** 第一个格子,什么都不装,设置右下边框不可见*/if(j==0){p1 = new Paragraph(" ",mini_font);cell_in.addElement(p1);//将段落添加到格子中cell_in.disableBorderSide(10);//设置边框线不可见table_in.addCell(cell_in);//然后将格子添加到内置表格中}/** 第二格子,合并一个2行1列的单元格用来装图标，设置左右边框线不可见*/if(j==1){cell_in.setRowspan(2);//合并单元格cell_in.disableBorderSide(12);String image_path = (String) image[i];Image img = Image.getInstance(image_path);cell_in.addElement(img);//将图标图片添加到格子中table_in.addCell(cell_in);}/** 第三个格子,合并一个1行2列的单元格装类型(月收益),设置左右下边框不可见*/if(j==2){cell_in.setColspan(2);String head_str = (String) head[i];p1 = new Paragraph(head_str.trim(),mini_font);p1.setAlignment(Element.ALIGN_MIDDLE);p1.setAlignment(Element.ALIGN_CENTER);cell_in.disableBorderSide(14);cell_in.addElement(p1);table_in.addCell(cell_in);}/** 第四个格子,装空白段落*/if(j==3){p1 = new Paragraph(" ",mini_font);cell_in.addElement(p1);cell_in.disableBorderSide(6);table_in.addCell(cell_in);}/**第五个格子,装空白段落*/if(j==4){p1 = new Paragraph(" ",mini_font);cell_in.addElement(p1);cell_in.disableBorderSide(9);table_in.addCell(cell_in);}/** 第六个格子,合并一个1行2列的单元格装数值(￥26493.6),设置上左右边框不可见*/if(j==5){cell_in.setColspan(2);cell_in.disableBorderSide(13);String body_str = (String) body[i];p1 = new Paragraph(body_str,mini_font);p1.setAlignment(Element.ALIGN_MIDDLE);p1.setAlignment(Element.ALIGN_CENTER);cell_in.addElement(p1);table_in.addCell(cell_in);}/**第七个格子,装空白段落 */if(j==6){p1 = new Paragraph(" ",mini_font);cell_in.addElement(p1);cell_in.disableBorderSide(5);table_in.addCell(cell_in);}}cell_out.addElement(table_in);//将添加好的数据的内表格,添加到外表格对应格子中table_out.addCell(cell_out);}document.add(table_out);//添加表格对象}/*** 创建一个1列2行表格，第一行为图表标题, 第二行装柱状图图表 * @param document* @param data* @throws MalformedURLException* @throws IOException* @throws DocumentException*/private static void addSecondChart(Document document,Map data) throws MalformedURLException, IOException, DocumentException{String name = (String) data.get("name");String xDesc = (String) data.get("xDesc");String yDesc = (String) data.get("yDesc");String[] legends = (String[]) data.get("legends");String[] xData = (String[]) data.get("x");double[][] y = (double[][]) data.get("y");CategoryDataset dataset1 =BarImageUtil.getBarData(y, legends, xData);String img_name = name+System.currentTimeMillis()+".png";//通过柱状图工具获取生成的柱状图图片地址String img_path = BarImageUtil.createBarChart(dataset1,null, xDesc, yDesc,"","",img_name,false);PdfPTable table = new PdfPTable(1);table.setSpacingBefore(15f);PdfPCell cell0 = new PdfPCell();cell0.setUseAscender(true);cell0.setUseDescender(true);cell0.setHorizontalAlignment(Element.ALIGN_CENTER);cell0.setVerticalAlignment(Element.ALIGN_MIDDLE);Paragraph p = new Paragraph(name,normal_font);p.setAlignment(Element.ALIGN_MIDDLE);cell0.addElement(p);PdfPCell cell1 = new PdfPCell();Image img = Image.getInstance(img_path);img.setBorder(0);cell1.addElement(img);table.addCell(cell0);table.addCell(cell1);document.add(table);}/*** 创建一个1列2行表格，第一行为图表标题, 第二行装饼图图表 * @param document* @param data* @throws MalformedURLException* @throws IOException* @throws DocumentException*/private static void addThirdChart(Document document,Map data) throws MalformedURLException, IOException, DocumentException{String name = (String) data.get("name");String[] head = (String[]) data.get("head");double[] body = (double[]) data.get("body");PieDataset pset = PileImageUtil.getDataPieSetByUtil(body, head);String img_name = name+System.currentTimeMillis()+".png";String img_path = PileImageUtil.createValidityComparePimChar(pset, "", img_name, head);PdfPTable table = new PdfPTable(1);table.setSpacingBefore(50f);PdfPCell cell0 = new PdfPCell();cell0.setUseAscender(true);cell0.setUseDescender(true);cell0.setHorizontalAlignment(Element.ALIGN_CENTER);cell0.setVerticalAlignment(Element.ALIGN_MIDDLE);Paragraph p = new Paragraph(name,normal_font);p.setAlignment(Element.ALIGN_MIDDLE);cell0.addElement(p);PdfPCell cell1 = new PdfPCell();Image img = Image.getInstance(img_path);img.setBorder(0);cell1.addElement(Image.getInstance(img_path));table.addCell(cell0);table.addCell(cell1);document.add(table);}/*** 创建一个1列2行表格，第一行为图表标题, 第二行装柱状图/饼图混合图表 * @param document* @param data* @throws MalformedURLException* @throws IOException* @throws DocumentException*/private static void addFourthChart(Document document,Map data) throws MalformedURLException, IOException, DocumentException{String name = (String) data.get("name");String yDesc1 = (String) data.get("yDesc1");String yDesc2 = (String) data.get("yDesc2");String[] xData = (String[]) data.get("x");double[][] y1 = (double[][]) data.get("y1");double[][] y2 = (double[][]) data.get("y2");String[] legend1 = (String[]) data.get("legend1");String[] legend2 = (String[]) data.get("legend2");CategoryDataset dataset1 =BarImageUtil.getBarData(y1, legend1, xData);CategoryDataset dataset2 =BarImageUtil.getBarData(y2, legend2, xData);String img_name = name+System.currentTimeMillis()+".png";String img_path = BarImageUtil.createBarChart(dataset1,dataset2, "", yDesc1,yDesc2,"",img_name,true);PdfPTable table = new PdfPTable(1);table.setSpacingBefore(80f);//table.setSplitLate(false);//禁止表格切割PdfPCell cell0 = new PdfPCell();cell0.setUseAscender(true);cell0.setUseDescender(true);cell0.setHorizontalAlignment(Element.ALIGN_CENTER);cell0.setVerticalAlignment(Element.ALIGN_MIDDLE);Paragraph p = new Paragraph(name,normal_font);p.setAlignment(Element.ALIGN_MIDDLE);cell0.addElement(p);PdfPCell cell1 = new PdfPCell();Image img = Image.getInstance(img_path);img.setBorder(0);cell1.addElement(img);table.addCell(cell0);table.addCell(cell1);document.add(table);;}/*** 内置双层表格, 内置表格标题格子,设置边框宽度为0 合并为一行* @param document* @param data* @throws DocumentException*/private static void addFifthTable(Document document,Map data) throws DocumentException{String name = (String) data.get("name");String[] datas = (String[]) data.get("datas");PdfPTable table = new PdfPTable(1);//外表格table.setSpacingBefore(50f);//设置当前表格与上一个表格间距为50PdfPCell cell_out1 = new PdfPCell();//外表格第一个格子 基本信息cell_out1.setUseAscender(true);cell_out1.setUseDescender(true);cell_out1.setHorizontalAlignment(Element.ALIGN_CENTER);cell_out1.setVerticalAlignment(Element.ALIGN_MIDDLE);Paragraph p = new Paragraph(name,normal_font);p.setAlignment(Element.ALIGN_MIDDLE);cell_out1.addElement(p);//外表格第二个格子  装内置表格PdfPCell cell_out2 = new PdfPCell();//创建一个内置10列的表格PdfPTable table_in = new PdfPTable(10);PdfPCell cell0 = new PdfPCell();//第一个格子 合并一个10列的单元格 装 "电站信息"cell0.setColspan(10);cell0.setBorderWidth(0);cell0.addElement(new Paragraph(datas[0],normal_font));PdfPCell cell1 = new PdfPCell();//第二个格子  合并一个2列的单元格 装 "子阵数量"cell1.setColspan(2);cell1.addElement(new Paragraph(" "+datas[1],normal_font));PdfPCell cell2 = new PdfPCell();//第三个格子  合并一个3列的单元格 装 "1"cell2.setColspan(3);cell2.addElement(new Paragraph(" "+datas[2],normal_font));PdfPCell cell3 = new PdfPCell();cell3.setColspan(2);cell3.addElement(new Paragraph(" "+datas[3],normal_font));PdfPCell cell4 = new PdfPCell();cell4.setColspan(3);cell4.addElement(new Paragraph(" "+datas[4],normal_font));PdfPCell cell5 = new PdfPCell();cell5.setColspan(2);cell5.addElement(new Paragraph(" "+datas[5],normal_font));PdfPCell cell6 = new PdfPCell();cell6.setColspan(3);cell6.addElement(new Paragraph(" "+datas[6],normal_font));PdfPCell cell7 = new PdfPCell();cell7.setColspan(2);cell7.addElement(new Paragraph(" "+datas[7],normal_font));PdfPCell cell8 = new PdfPCell();cell8.setColspan(3);cell8.addElement(new Paragraph(" "+datas[8],normal_font));PdfPCell cell9 = new PdfPCell();cell9.setColspan(2);cell9.addElement(new Paragraph(" "+datas[9],normal_font));PdfPCell cell10 = new PdfPCell();cell10.setColspan(8);cell10.addElement(new Paragraph(" "+datas[10],normal_font));PdfPCell cell11 = new PdfPCell();cell11.setColspan(2);cell11.addElement(new Paragraph(" "+datas[11],normal_font));PdfPCell cell12 = new PdfPCell();cell12.setColspan(8);cell12.addElement(new Paragraph(" "+datas[12],normal_font));PdfPCell cell13 = new PdfPCell();//合并一个10列的单元格 装"智能分析"cell13.setBorderWidth(0);cell13.setColspan(10);cell13.addElement(new Paragraph(datas[13],normal_font));PdfPCell cell14 = new PdfPCell();cell14.setColspan(2);cell14.addElement(new Paragraph(" "+datas[14],normal_font));PdfPCell cell15 = new PdfPCell();cell15.setColspan(3);cell15.addElement(new Paragraph(" "+datas[15],normal_font));PdfPCell cell16 = new PdfPCell();cell16.setColspan(2);cell16.addElement(new Paragraph(" "+datas[16],normal_font));PdfPCell cell17 = new PdfPCell();cell17.setColspan(3);cell17.addElement(new Paragraph(" "+datas[17],normal_font));PdfPCell cell18 = new PdfPCell();cell18.setColspan(2);cell18.addElement(new Paragraph(" "+datas[18],normal_font));PdfPCell cell19 = new PdfPCell();cell19.setColspan(8);cell19.addElement(new Paragraph(" "+datas[19],normal_font));table_in.addCell(cell0);table_in.addCell(cell1);table_in.addCell(cell2);table_in.addCell(cell3);table_in.addCell(cell4);table_in.addCell(cell5);table_in.addCell(cell6);table_in.addCell(cell7);table_in.addCell(cell8);table_in.addCell(cell9);table_in.addCell(cell10);table_in.addCell(cell11);table_in.addCell(cell12);table_in.addCell(cell13);table_in.addCell(cell14);table_in.addCell(cell15);table_in.addCell(cell16);table_in.addCell(cell17);table_in.addCell(cell18);table_in.addCell(cell19);cell_out2.addElement(table_in);table.addCell(cell_out1);table.addCell(cell_out2);document.add(table);}/*** 封装测试数据* @return*/public static Map<?,?> getTestData(){Map map = new HashMap();List datas = new ArrayList();//E02报表Map item1 = new HashMap();String[] head1 = {"月收益","月发电量","月问题数","月告警数"};String[] data1 = {"￥ 26493.6","20379.7kwh","15","107"};String[] image1 = {"D:\\Desktop\\sy.png","D:\\Desktop\\fdl.png","D:\\Desktop\\wt.png","D:\\Desktop\\gj.png"};item1.put("head", head1);item1.put("body", data1);item1.put("image", image1);//发电量统计Map item2 = new HashMap();String[] xdata2 = {"1","2","3","4","5","6","7","8","9","10","11","12"};String[] legends = {""};//图例double[][] ydata2 = {{215656.53,254213.00,146546.32,182132.54,152132.23,322325.28,345321.62,371212.24,394564.75,251515.04,215465.45,175465}   };item2.put("legends", legends);item2.put("name", "发电量统计");item2.put("x", xdata2);item2.put("xDesc", "月份");item2.put("y", ydata2);item2.put("yDesc", "发电量: KWH");//告警统计Map item3 = new HashMap();String[] head3 = {"紧急故障数","次要故障数"};double[] body3 = {100,7};item3.put("name", "告警统计");item3.put("head", head3);item3.put("body", body3);//社会价值统计Map item4 = new HashMap();String[] xdata4 = {"1","2","3","4","5","6","7","8","9","10","11","12"};double[][] ydata4 = {{532,275,343,444,521,663,708,806,655,512,208,212},{53,27,34,44,52,66,70,80,65,51,20,21}};double[][] ydatat = {{103,77,84,94,102,66,120,130,115,101,70,71}};String[] legend1 = {"CO2减排","节约标准煤"};String[] legend2 = {"减少森林砍伐"};item4.put("name", "问题统计");item4.put("x", xdata4);item4.put("yDesc1", "单位:kg");item4.put("y1", ydata4);item4.put("yDesc2", "单位:棵");item4.put("y2", ydatat);item4.put("legend1", legend1);item4.put("legend2", legend2);//基本信息Map item5 = new HashMap();String[] body5 = {"电站信息","子阵数量","1","逆变器数量","1346","组串数量","187","电站面积","11","电站模式","自发自用","电站概述","","智能分析信息","分析类型","电站级IV诊断","故障组串数","0","最新诊断时间","2020-5-4 10:52:01"};item5.put("name", "基本信息");item5.put("datas", body5);datas.add(item1);datas.add(item2);datas.add(item3);datas.add(item4);datas.add(item5);map.put("pdfName", "月报表");map.put("datas", datas);return map;}
}

柱状图工具类

package industryStationExportDemo;import java.awt.Color;
import java.awt.Font;
import java.awt.RenderingHints;
import java.io.File;
import java.io.FileOutputStream;
import java.text.DecimalFormat;import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
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.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.DatasetRenderingOrder;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.TextAnchor;/*** 多组柱状图测试类* @author Administrator**/
public class BarImageUtil {private static final String CHART_PATH = "E:/test/";public static void main(String[] args) {// TODO Auto-generated method stubmakeBarGroupChart();}public static void makeBarGroupChart(){double[][] data = new double[][]{{10,12,2,0,1,2,7},{5250.00,33,4,0,7,3,26},{5247.00,1794,592,18,297,73,751}};String[] rowKeys = { "待跟进数", "未完成数", "已完成数" };String[] columnKeys = { "中国", "欧洲", "亚洲", "泰国", "美洲", "非洲", "澳洲" };CategoryDataset dataset = getBarData(data, rowKeys, columnKeys);double[][] data2 = new double[][]{{1452.0,1620.0,1800.0,1532.0,1365.0,2163.0,1709.0}};String[] columnKeys2 = { "CO2减排" };String[] rowKeys2 =  { "中国", "欧洲", "亚洲", "泰国", "美洲", "非洲", "澳洲" };CategoryDataset dataset2 = DatasetUtilities.createCategoryDataset(columnKeys2, rowKeys2, data2);createBarChart(dataset,null,"","单位:kg","单位:棵","","柱状图6.png",false);}public static CategoryDataset getBarData(double[][] data, String[] rowKeys,String[] columnKeys){return DatasetUtilities.createCategoryDataset(rowKeys, columnKeys, data);}/*** 柱状图* *@param dataset 数据集* @param xName x轴的说明* @param yName 左y轴的说明* @param yName2 右y轴的说明* @param chartTitle 图标题* @param charName 生成图片的名字* @return*/public static String createBarChart(CategoryDataset dataset1, CategoryDataset dataset2,String xName,String yName,String yName2, String chartTitle, String charName,boolean flag){JFreeChart chart = ChartFactory.createBarChart(chartTitle, // 图表标题xName, // 目录轴的显示标签yName, // 数值轴的显示标签dataset1, // 数据集0PlotOrientation.VERTICAL, // 图表方向：水平、垂直flag, // 是否显示图例(对于简单的柱状图必须是false)false, // 是否生成工具false // 是否生成URL链接);Font labelFont = new Font("SansSerif", Font.TRUETYPE_FONT, 12);/** VALUE_TEXT_ANTIALIAS_OFF表示将文字的抗锯齿关闭,* 使用的关闭抗锯齿后，字体尽量选择12到14号的宋体字,这样文字最清晰好看*/chart.getRenderingHints().put(RenderingHints.KEY_TEXT_ANTIALIASING,RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);chart.setTextAntiAlias(false);chart.setBackgroundPaint(Color.white);// create plotCategoryPlot plot = chart.getCategoryPlot();// 设置横虚线可见plot.setRangeGridlinesVisible(true);// 虚线色彩plot.setRangeGridlinePaint(Color.gray);// 设置柱图背景色（注意，系统取色的时候要使用16位的模式来查看颜色编码，这样比较准确）//plot.setBackgroundPaint(new Color(255, 255, 204));// x轴设置CategoryAxis domainAxis = plot.getDomainAxis();domainAxis.setLabelFont(labelFont);// 轴标题domainAxis.setTickLabelFont(labelFont);// 轴数值domainAxis.setMaximumCategoryLabelWidthRatio(0.6f);// 横轴上的 Lable 是否完整显示domainAxis.setLowerMargin(0.02);// 设置距离图片左端距离domainAxis.setUpperMargin(0.02);// 设置距离图片右端距离plot.setDomainAxis(domainAxis);// y轴设置/*NumberAxis vn = (NumberAxis) plot.getRangeAxis();vn.setAutoRangeIncludesZero(true);DecimalFormat df = new DecimalFormat("#0.00");vn.setNumberFormatOverride(df); */ValueAxis rangeAxis = plot.getRangeAxis();rangeAxis.setLabelFont(labelFont);rangeAxis.setTickLabelFont(labelFont);// 设置最高的一个 Item 与图片顶端的距离rangeAxis.setUpperMargin(0.15);// 设置最低的一个 Item 与图片底端的距离rangeAxis.setLowerMargin(0.15);plot.setRangeAxis(0,rangeAxis);BarRenderer renderer = new BarRenderer();// 设置柱子宽度//renderer.setMaximumBarWidth(1.0);// 设置柱子间距renderer.setItemMargin(0);// 设置柱子高度renderer.setMinimumBarLength(0.3);// 设置柱子边框颜色renderer.setBaseOutlinePaint(Color.BLACK);// 设置柱子边框可见renderer.setDrawBarOutline(true);// 显示每个柱的数值，并修改该数值的字体属性renderer.setBaseItemLabelFont(labelFont);renderer.setIncludeBaseInRange(true);renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());renderer.setBaseItemLabelsVisible(true);renderer.setSeriesPaint(0, new Color(106,162,255));//设置第一个柱状体颜色renderer.setSeriesPaint(1, new Color(124,203,196));//设置第二个柱状体颜色，后续柱状体颜色自动填充renderer.setAutoPopulateSeriesFillPaint(true);//自动填充柱状体颜色//设置柱状体数值标签展示样式,此设置表示：在柱状体顶部左边显示,按左下定点向上旋转0.7角度renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE10,TextAnchor.BASELINE_LEFT, TextAnchor.BOTTOM_LEFT,-0.7D));// 设置柱的透明度plot.setForegroundAlpha(1.0f);plot.setRenderer(renderer);//双Y坐标轴设置if(null!=dataset2){NumberAxis numberaxis3 = new NumberAxis(yName2);/*numberaxis3.setNumberFormatOverride(NumberFormat.getInstance());//设置风格numberaxis3.setAutoRange(false);numberaxis3.setLowerMargin(0.02D);//数据轴左边距numberaxis3.setUpperMargin(0.02D);//右边距 */plot.setRangeAxis(1, numberaxis3);//添加第二个坐标轴plot.setDataset(1, dataset2);//设置数据集索引plot.mapDatasetToRangeAxis(1,1);//将该索引映射到axis 第一个参数指数据集的索引,第二个参数为坐标轴的索引LineAndShapeRenderer lineandshaperenderer = new LineAndShapeRenderer();lineandshaperenderer.setBaseShapesVisible(true); // series 点（即数据点）可见lineandshaperenderer.setBaseLinesVisible(true); // series 点（即数据点）间有连线可见lineandshaperenderer.setBaseItemLabelsVisible(true);  // 显示折点数据lineandshaperenderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());lineandshaperenderer.setSeriesPaint(0,Color.GREEN);//设置某坐标轴索引上数据集的显示样式plot.setRenderer(1, lineandshaperenderer);plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);}FileOutputStream fos_jpg = null;try{isChartPathExist(CHART_PATH);String chartName = CHART_PATH + charName;fos_jpg = new FileOutputStream(chartName);ChartUtilities.writeChartAsPNG(fos_jpg, chart, 800, 500, true, 10);return chartName;} catch (Exception e){e.printStackTrace();return null;} finally {try {fos_jpg.close();} catch (Exception e){e.printStackTrace();}}}private static void isChartPathExist(String chartPath){File file = new File(chartPath);if (!file.exists()) {file.mkdirs();}}
}

饼图工具类

package industryStationExportDemo;import java.awt.Color;
import java.awt.Font;
import java.awt.RenderingHints;
import java.io.File;
import java.io.FileOutputStream;
import java.text.DecimalFormat;
import java.text.NumberFormat;import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.RingPlot;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.jfree.util.SortOrder;/*** 饼状图 测试类* @author Administrator**/
public class PileImageUtil {private static final String CHART_PATH = "E:/test/";public static void main(String[] args) {// 生成饼状图makePieChart();}/*** 测试逆变器数据*/public static void makePieChart(){String[] keys = { "中国", "亚洲","非洲","欧洲","美洲","大洋洲" };double[] data = { 336854, 16986,681,109535,14285,8028 };String img_title = "逆变器总数(单位:台)";String img_name = "饼状图4.png";PieDataset pset = getDataPieSetByUtil(data, keys);createValidityComparePimChar(pset, img_title,img_name, keys);}// 饼状图 数据集public static PieDataset getDataPieSetByUtil(double[] data,String[] datadescription){if (data != null && datadescription != null){if (data.length == datadescription.length){DefaultPieDataset dataset = new DefaultPieDataset();for (int i = 0; i < data.length; i++){dataset.setValue(datadescription[i], data[i]);}return dataset;}}return null;}/*** 饼状图* * @param dataset 数据集* @param chartTitle 图标题* @param charName 生成图的名字* @param pieKeys 分饼的名字集* @return*/public static String createValidityComparePimChar(PieDataset dataset,String chartTitle, String charName, String[] pieKeys){JFreeChart chart = ChartFactory.createRingChart(chartTitle,dataset, true,true,false);//饼图面积降序排序((DefaultPieDataset) dataset).sortByValues(SortOrder.DESCENDING);// 使下说明标签字体清晰,去锯齿类似于chart.setTextAntiAlias(false);// 图片背景色chart.setBackgroundPaint(Color.white);// 设置图标题的字体重新设置titleFont font = new Font("隶书", Font.BOLD, 25);TextTitle title = new TextTitle(chartTitle);title.setFont(font);chart.setTitle(title);RingPlot plot = (RingPlot) chart.getPlot();plot.setBackgroundAlpha(0.8f);plot.setSectionPaint(pieKeys[0], new Color(250, 100, 0));plot.setSectionPaint(pieKeys[1], new Color(247, 181, 0));// 设置无数据时的信息//plot.setNoDataMessage("无对应的数据，请重新查询。");// 设置无数据时的信息显示颜色//plot.setNoDataMessagePaint(Color.red);((DefaultPieDataset) dataset).sortByValues(SortOrder.DESCENDING);plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}:{1}({2})", NumberFormat.getNumberInstance(),new DecimalFormat("0.00%")));// 图例显示百分比:自定义方式， {0} 表示选项， {1} 表示数值， {2} 表示所占比例//{0}={1}({2})  中国=103920(70%)plot.setLegendLabelGenerator(new StandardPieSectionLabelGenerator("{0}"));plot.setLabelFont(new Font("SansSerif", Font.TRUETYPE_FONT, 12));// 指定图片的透明度(0.0-1.0)plot.setForegroundAlpha(1.0f);// 指定显示的饼图上圆形(false)椭圆形(true)plot.setCircular(true);FileOutputStream fos_jpg = null;try{isChartPathExist(CHART_PATH);String chartName = CHART_PATH + charName;fos_jpg = new FileOutputStream(chartName);// 高宽的设置影响椭圆饼图的形状ChartUtilities.writeChartAsPNG(fos_jpg, chart, 1000, 460);return chartName;}catch (Exception e){e.printStackTrace();return null;}finally{try{fos_jpg.close();}catch (Exception e){e.printStackTrace();}}}/*** 判断文件夹是否存在，如果不存在则新建* @param chartPath*/private static void isChartPathExist(String chartPath){File file = new File(chartPath);if (!file.exists()) {file.mkdirs();}}
}推荐下Jfree中文API文档, 另感谢大佬的cell边框设置无效的示例> https://www.yiibai.com/jfreechart/jfreechart_referenced_apis.html
>
> https://blog.csdn.net/qq_37481877/article/details/88329958

Jfree 数据可视化相关推荐

python与excel做数据可视化-Python的Excel操作及数据可视化
Excel表操作 python操作excel主要用到xlrd和xlwt这两个库,即xlrd是读excel,xlwt是写excel的库. 安装xlrd pip install xlrd 简单的表格读取 ...
Spark GraphX 的数据可视化
概述 Spark GraphX 本身并不提供可视化的支持, 我们通过第三方库 GraphStream 和 Breeze 来实现这一目标详细代码下载:http://www.demodashi.com ...
【置顶】利用 NLP 技术做简单数据可视化分析教程（实战）
置顶本人决定将过去一段时间在公司以及日常生活中关于自然语言处理的相关技术积累,将在gitbook做一个简单分享,内容应该会很丰富,希望对你有所帮助,欢迎大家支持. 内容介绍如下你是否曾经在租房时因 ...
只要5分钟用数据可视化带你看遍11月份新闻热点事件
2017年11月份已经离我们而去,在过去的11月份我们也许经历了双十一的剁手,也可能亲眼看见了别人剁手.11月份的北京大兴区发生了"11·18"重大火灾,国内多家幼儿园也多次上了头 ...
机器学习PAL数据可视化
机器学习PAL数据可视化本文以统计全表信息为例,介绍如何进行数据可视化. 前提条件完成数据预处理,详情请参见数据预处理. 操作步骤登录PAI控制台. 在左侧导航栏,选择模型开发和训练 > ...
2021年大数据ELK（二十七）：数据可视化（Visualize）
全网最详细的大数据ELK文章系列,强烈建议收藏加关注! 新文章都已经列出历史文章目录,帮助大家回顾前面的知识重点. 目录数据可视化(Visualize) 一.数据可视化的类型二.以饼图展示404与 ...
legend位置 pyecharts_实验｜pyecharts数据可视化分析-1
1. 实验介绍本实验主要介绍pyecharts基本特点与属性. 1.1. 实验目的了解pyecharts功能.特点.与安装方式. 1.2. 知识点 pyecharts特点 pyecharts图表 ...
matlab数据可视化总结,机器学习----Matlab数据可视化总结(plot篇)
前言通过资料的整理,使用Matlab语言的plot函数将数据可视化,plota函数也是一个比较常用的二维绘图函数,针对向量或矩阵.如果你也想试一试,初学者记得使用clf.close或close al ...
graphpad做折线图坐标轴数字_pandas做数据可视化具体操作，快来看看吧
常见的数据可视化库有: matplotlib 是最常见的2维库,可以算作可视化的必备技能库,由于matplotlib是比较底层的库,api很多,代码学起来不太容易. seaborn 是建构于matpl ...
GitHub开源城市结构公交路线数据可视化
本开源项目用公交路线数据,还原城市结构,通过数据可视化手段,还原了 30 多个城市的城市结构. 该项目中有数据获取和处理的脚本,而且该项目充分体现了数据可视化带来的便利和效果,易于激发学习编程的热情. ...

Jfree 数据可视化

Jfree 数据可视化相关推荐

最新文章

热门文章