package com.ruoyi.common.file.docEChar;import com.ruoyi.common.utils.DateUtils;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.CategoryLabelPositions;import org.jfree.chart.plot.CategoryPlot;import org.jfree.chart.renderer.category.BarRenderer;import org.jfree.chart.title.TextTitle;import org.jfree.data.category.CategoryDataset;import org.jfree.data.category.DefaultCategoryDataset;import java.awt.*;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.Random;public class SeriesBarChart { public static String seriesChart() { CategoryDataset categoryDataset = createDataset2(); JFreeChart jfreechart = ChartFactory.createBarChart("Legal & General单位信托基金价格", "日期", "价格", categoryDataset); CategoryPlot ca