package com.hxzkoa.util;
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import java.awt.Font;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.ArrayList;
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import java.util.List;
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import javax.swing.filechooser.FileSystemView;
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import org.jfree.chart.ChartFactory;
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import org.jfree.chart.ChartUtilities;
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import org.jfree.chart.JFreeChart;
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import org.jfree.chart.axis.CategoryAxis;
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import org.jfree.chart.axis.ValueAxis;
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import org.jfree.chart.plot.CategoryPlot;
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import org.jfree.chart.plot.PlotOrientation;
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import org.jfree.chart.title.LegendTitle;
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import org.jfree.chart.title.TextTitle;
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import org.jfree.data.DefaultKeyedValues;
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import org.jfree.data.category.CategoryDataset;
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import org.jfree.data.general.DatasetUtilities;
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import com.hxzkoa.json.tb_history_power;
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/**
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* XY折线图
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*
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*/
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public class LineXy {
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static JFreeChart chart = null;
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/**
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* 生成JFreeChart
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*
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* @throws IOException
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*/
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public static void getJFreeChart_hp(String name, List<tb_history_power> powerList,String sysPath) throws IOException {
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CategoryDataset dataset = null;
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DefaultKeyedValues keyedValues = new DefaultKeyedValues();
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int size = powerList.size();
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if (size != 0) {
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for (int i = 0; i < size; i++) {
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tb_history_power pow = powerList.get(i);
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int power = Integer.parseInt(pow.getPower());
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keyedValues.addValue(pow.getTime(), power);
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}
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dataset = DatasetUtilities.createCategoryDataset(name + "电量", keyedValues);
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chart = ChartFactory.createLineChart("", // 图表标题
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"日期", // x轴标签
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"电量(%)", // y轴标签
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dataset, // 数据集
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PlotOrientation.VERTICAL, // 图表方向：水平、垂直
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true, // 是否显示图例
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false, // 是否生成工具
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false // 是否生成URL链接
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);
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// 修改字体
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updateFont(chart);
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}
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chart.setTitle(new TextTitle(name + "电量分析", new Font("宋体", Font.BOLD + Font.ITALIC, 20)));
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LegendTitle legend = chart.getLegend(0);// 设置Legend
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legend.setItemFont(new Font("宋体", Font.BOLD, 14));
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//File desktopDir = FileSystemView.getFileSystemView().getHomeDirectory();
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//String path = desktopDir.getAbsolutePath()+ "\\" + name + "电量分析.jpeg";
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// String filePath = "C:/powerAnalysis/";
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String filePath = sysPath+"hxzk/image/powerAnalysis/";
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File dir = new File(filePath);
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if(!dir.isDirectory()){
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dir.mkdirs();
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}
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String fileName = filePath + name + "电量分析.jpeg";
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OutputStream os = new FileOutputStream(fileName);// 图片是文件格式的，故要用到FileOutputStream用来输出。
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ChartUtilities.writeChartAsJPEG(os, chart, 1000, 800);
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// 使用一个面向application的工具类，将chart转换成JPEG格式的图片。第3个参数是宽度，第4个参数是高度。
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os.close();// 关闭输出流
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}
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/**
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* 修改字体
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*
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* @param chart
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*/
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private static void updateFont(JFreeChart chart) {
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// 标题
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TextTitle textTitle = chart.getTitle();
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textTitle.setFont(new Font("宋体", Font.PLAIN, 20));
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LegendTitle legendTitle = chart.getLegend();
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legendTitle.setItemFont(new Font("宋体", Font.PLAIN, 14));
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// 图表
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CategoryPlot categoryPlot = chart.getCategoryPlot();
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CategoryAxis categoryAxis = categoryPlot.getDomainAxis();
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// X轴字体
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categoryAxis.setTickLabelFont(new Font("宋体", Font.PLAIN, 14));
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// X轴标签字体
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categoryAxis.setLabelFont(new Font("宋体", Font.PLAIN, 14));
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ValueAxis valueAxis = categoryPlot.getRangeAxis();
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// y轴字体
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valueAxis.setTickLabelFont(new Font("宋体", Font.PLAIN, 14));
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// y轴标签字体
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valueAxis.setLabelFont(new Font("宋体", Font.PLAIN, 14));
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}
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public static void main(String[] args) throws Exception {
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// String tagid = "4004";
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// List<tb_history_power> powerList = new ArrayList();
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// tb_history_power p1 = new tb_history_power();
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// tb_history_power p2 = new tb_history_power();
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// p1.setPower("37");
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// p1.setTime("03-28");
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// p2.setPower("35");
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// p2.setTime("03-19");
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// powerList.add(p1);
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// powerList.add(p2);
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//// getJFreeChart_hp(tagid, powerList,);
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// System.out.println("导出成功！");
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}
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}
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