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
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> https://blog.csdn.net/qq_37481877/article/details/88329958