使用poi操作excel_画图


package com.fujitsu.fb.reporter.subprocess;

import java.io.FileOutputStream;

import org.apache.poi.ss.usermodel.*;

import org.apache.poi.ss.util.*;

import org.apache.poi.ss.usermodel.charts.*;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**

 * Illustrates how to create a simple scatter chart.

 *

 * @author Roman Kashitsyn

 */

public class ScatterChart

{

 public static void main(String[] args) throws Exception

 {

  Workbook wb = new XSSFWorkbook();

  Sheet sheet = wb.createSheet("Sheet 1");

  final int NUM_OF_ROWS = 3;

  final int NUM_OF_COLUMNS = 10;

  // Create a row and put some cells in it. Rows are 0 based.

  Row row;

  Cell cell;

  for (int rowIndex = 0; rowIndex < NUM_OF_ROWS; rowIndex++)

  {

   row = sheet.createRow((short) rowIndex);

   for (int colIndex = 0; colIndex < NUM_OF_COLUMNS; colIndex++)

   {

    cell = row.createCell((short) colIndex);

    cell.setCellValue(colIndex * (rowIndex + 1));

   }

  }

  Drawing drawing = sheet.createDrawingPatriarch();

  ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 2, 5, 10, 15);//设置坐标

  Chart chart = drawing.createChart(anchor);//创建图表

  ChartLegend legend = chart.getOrCreateLegend();//获取或创建图例

  legend.setPosition(LegendPosition.TOP_RIGHT);//设置图例位置

  ScatterChartData data = chart.getChartDataFactory().createScatterChartData();//获取分散数据

  ValueAxis bottomAxis = chart.getChartAxisFactory().createValueAxis(AxisPosition.BOTTOM);//地轴

  ValueAxis leftAxis = chart.getChartAxisFactory().createValueAxis(AxisPosition.LEFT);//左轴

  leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);//设置自动交叉

  ChartDataSource<Number> xs = DataSources.fromNumericCellRange(sheet,

    new CellRangeAddress(0, 0, 0, NUM_OF_COLUMNS - 1));

  ChartDataSource<Number> ys1 = DataSources.fromNumericCellRange(sheet,

    new CellRangeAddress(1, 1, 0, NUM_OF_COLUMNS - 1));

  ChartDataSource<Number> ys2 = DataSources.fromNumericCellRange(sheet,

    new CellRangeAddress(2, 2, 0, NUM_OF_COLUMNS - 1));

  data.addSerie(xs, ys1);

  data.addSerie(xs, ys2);

  chart.plot(data, bottomAxis, leftAxis);

  String excelPath = "E:\\poi\\ooxml-scatter-chart.xlsx";

  // Write the output to a file

  FileOutputStream fileOut = new FileOutputStream(excelPath);

  wb.write(fileOut);

  fileOut.close();

  System.out.println("----Excle文件已生成------");

 }

}