java JFreeChart 绘制各种图形 并使用itextPdf生成PDF导出

一、引入maven

xml 复制代码
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.13.3</version>
</dependency>
<dependency>
    <groupId>org.jfree</groupId>
    <artifactId>jfreechart</artifactId>
    <version>1.5.4</version>
</dependency>
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.6</version>
</dependency>

二、使用

java 复制代码
package com.jiayou.peis.common.core.pdf;

import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.PdfWriter;
import org.apache.commons.io.FileUtils;
import org.jfree.chart.ChartUtils;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;

import java.io.*;


public class Test {

    public static void main(String[] args) throws IOException {
        PdfWriter writer = null;
        OutputStream outputStream = null;
        Document doc = null;
        try {
            doc = new Document(PageSize.A4);
            doc.setMargins(55, 46, 27, 20);

            File f = new File("C:\\Users\\Administrator\\Desktop\\新建文件夹\\9.pdf");
            if (!f.getParentFile().exists()) {
                FileUtils.forceMkdir(f.getParentFile());
            }
            outputStream = new FileOutputStream(f);
            writer = PdfWriter.getInstance(doc, outputStream);

            doc.open();


            //线图
            ByteArrayOutputStream lineBos = new ByteArrayOutputStream();
            ChartUtils.writeChartAsJPEG(lineBos, ChartUtil.lineChart("线图","r","d",getLineDataset()), 850, 440);
            Image lineImage = Image.getInstance(lineBos.toByteArray());
            lineImage.scalePercent(60);
            doc.add(lineImage);

            //饼图
            ByteArrayOutputStream pieBos = new ByteArrayOutputStream();
            ChartUtils.writeChartAsJPEG(pieBos, ChartUtil.pieChart("饼图",getPieDataset()), 850, 440);
            Image pieImage = Image.getInstance(pieBos.toByteArray());
            pieImage.scalePercent(60);
            doc.add(pieImage);

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            doc.close();
            writer.close();
            outputStream.close();

        }
    }

    private static DefaultPieDataset getPieDataset() {
        DefaultPieDataset dataset=new DefaultPieDataset();
        dataset.setValue("硕士",1);
        dataset.setValue("专科",2);
        dataset.setValue("本科",3);
        dataset.setValue("高中",3);
        return dataset;
    }

    private static DefaultCategoryDataset getLineDataset() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(15, "schools", "1970");
        dataset.addValue(30, "schools", "1980");
        dataset.addValue(60, "schools", "1990");
        dataset.addValue(120, "schools", "2000");
        dataset.addValue(240, "schools", "2010");
        dataset.addValue(300, "schools", "2020");
        dataset.addValue(320, "schools", "2022");
        return dataset;
    }
}

三、工具类

java 复制代码
package com.jiayou.peis.common.core.pdf;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.StandardChartTheme;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.chart.renderer.category.StandardBarPainter;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;

import java.awt.*;
import java.text.DecimalFormat;
import java.text.NumberFormat;

public class ChartUtil {
    private static final Color[] BAR_COLORS = new Color[]{new Color(79, 129, 189), new Color(192, 80, 77), new Color(155, 187, 89),};

    public static final Color[] LINE_COLORS = new Color[]{new Color(237, 123, 46), new Color(90, 154, 213), new Color(164, 164, 164),};

    private static final Color[] PIE_COLORS = new Color[]{new Color(75, 172, 198), new Color(128, 100, 162), new Color(155, 187, 89), new Color(192, 80, 77), new Color(79, 129, 189), new Color(44, 77, 117), new Color(247, 150, 70), new Color(165, 165, 165),};


    static StandardChartTheme initChartTheme() {
        StandardChartTheme currentTheme = new StandardChartTheme("JFree");
        // 横轴纵轴标题文字大小
        currentTheme.setLargeFont(new java.awt.Font("宋体", java.awt.Font.BOLD, 15));
        // 横轴纵轴数值文字大小
        currentTheme.setRegularFont(new java.awt.Font("宋体", java.awt.Font.PLAIN, 13));
        currentTheme.setExtraLargeFont(new java.awt.Font("宋体", java.awt.Font.BOLD, 20));
        // 背景颜色
        currentTheme.setPlotBackgroundPaint(new Color(255, 255, 204, 0));
        // 边框线条
        currentTheme.setPlotOutlinePaint(new Color(0, 0, 0, 0));
        // 网格线条
        currentTheme.setRangeGridlinePaint(new Color(78, 74, 74));
        return currentTheme;
    }

    /**
     * 线图
     *
     * @param title             标题
     * @param categoryAxisLabel 分类标签
     * @param valueAxisLabel    数值标签
     * @param dataset           数据集
     * @return org.jfree.chart.JFreeChart
     * @author Hou_fx
     * @date 2021.8.4 10:39
     */
    public static JFreeChart lineChart(String title, String categoryAxisLabel, String valueAxisLabel, DefaultCategoryDataset dataset) {
        ChartFactory.setChartTheme(initChartTheme());

        JFreeChart chart = ChartFactory.createLineChart(title,// 图标题
                categoryAxisLabel,// x轴标题
                valueAxisLabel,// y轴标题
                dataset,//数据集
                PlotOrientation.VERTICAL,//图表方向
                true, true, false);

        CategoryPlot plot = chart.getCategoryPlot();
        LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
        // 折现点显示数值
        renderer.setDefaultItemLabelsVisible(true);
        renderer.setDefaultItemLabelGenerator(new StandardCategoryItemLabelGenerator());
        // 更改线条颜色
        for (int i = 0; i < dataset.getRowKeys().size(); i++) {
            renderer.setSeriesPaint(i, LINE_COLORS[i]);
        }
        return chart;
    }


    /**
     * 柱状图
     *
     * @param title
     * @param categoryAxisLabel
     * @param valueAxisLabel
     * @param dataset           数据集
     * @return org.jfree.chart.JFreeChart
     * @author Hou_fx
     * @date 2021.8.4 14:03
     */
    public static JFreeChart barChart(String title, String categoryAxisLabel, String valueAxisLabel, DefaultCategoryDataset dataset) {
        ChartFactory.setChartTheme(initChartTheme());

        JFreeChart chart = ChartFactory.createBarChart(title, categoryAxisLabel, valueAxisLabel, dataset, PlotOrientation.VERTICAL, true, true, false);

        CategoryPlot plot = chart.getCategoryPlot();
        BarRenderer renderer = (BarRenderer) plot.getRenderer();
        // 纯色显示
        renderer.setBarPainter(new StandardBarPainter());
        // 柱子上显示小数字
        renderer.setDefaultItemLabelsVisible(true);
        renderer.setDefaultItemLabelGenerator(new StandardCategoryItemLabelGenerator());
        // 设置柱子间隔
        renderer.setItemMargin(0.0);
        // 设置柱子颜色
        for (int i = 0; i < dataset.getRowKeys().size(); i++) {
            renderer.setSeriesPaint(i, BAR_COLORS[i]);
        }
        return chart;
    }

    /**
     * 饼图
     *
     * @param title
     * @param dataset
     * @return org.jfree.chart.JFreeChart
     * @author Hou_fx
     * @date 2021.8.4 14:04
     */
    public static JFreeChart pieChart(String title, DefaultPieDataset dataset) {
        ChartFactory.setChartTheme(initChartTheme());

        JFreeChart chart = ChartFactory.createPieChart(title, dataset, true, true, false);
        PiePlot plot = (PiePlot) chart.getPlot();
        // 设置扇区颜色
        for (int i = 0; i < dataset.getKeys().size(); i++) {
            plot.setSectionPaint(dataset.getKey(i), PIE_COLORS[i]);
        }
        // 设置扇区的线条颜色
        plot.setDefaultSectionOutlinePaint(new Color(255, 255, 255));
        // 设置扇区的线条大小
        plot.setDefaultSectionOutlineStroke(new BasicStroke(3));
        // 设置标签颜色
        plot.setLabelLinkPaint(new Color(255, 255, 255, 0));
        // 设置标签背景色
        plot.setLabelBackgroundPaint(new Color(255, 255, 255, 0));
        // 设置标签线条颜色
        plot.setLabelOutlinePaint(new Color(255, 255, 255, 0));
        // 设置标签阴影颜色
        plot.setLabelShadowPaint(new Color(255, 255, 255, 0));
        // 设置饼图阴影颜色
        plot.setShadowPaint(new Color(255, 255, 255, 0));
        // 添加标签数字百分比显示
        plot.setLabelGenerator(new StandardPieSectionLabelGenerator(("{0}{2}"), NumberFormat.getNumberInstance(), new DecimalFormat("0.00%")));
        return chart;
    }
}

参考:
https://blog.csdn.net/hfy1237/article/details/126693786
https://blog.csdn.net/qq_39149275/article/details/119381389

相关推荐
_extraordinary_15 分钟前
Java SpringMVC(二) --- 响应,综合性练习
java·开发语言
程序员 Harry1 小时前
深度解析:使用ZIP流式读取大型PPTX文件的最佳实践
java
wxweven1 小时前
校招面试官揭秘:我们到底在寻找什么样的技术人才?
java·面试·校招
陈陈爱java2 小时前
新知识点背诵
java
失散132 小时前
分布式专题——39 RocketMQ客户端编程模型
java·分布式·架构·rocketmq
泽02022 小时前
Linux之环境变量
java·linux·redis
程序媛徐师姐2 小时前
Java基于SpringBoot的茶叶商城系统,附源码+文档说明
java·spring boot·java springboot·茶叶商城系统·java茶叶商城系统·茶叶·java茶叶商城
爱读源码的大都督3 小时前
为什么有了HTTP,还需要gPRC?
java·后端·架构
Lucky_Turtle3 小时前
【Java Xml】Apache Commons Digester3解析
xml·java·apache
聪明的笨猪猪4 小时前
Java Redis “缓存设计”面试清单(含超通俗生活案例与深度理解)
java·经验分享·笔记·面试