近期做的需求中有个统计页面，页面中要求导出统计数据时连同图表一起导出到excel中，项目中用到的是阿里的easyExcel，查阅资料后发现easyExcel中没有很好的画图表的解决方案。POI到是提供了不错的解决方案，代码如下：
- 数据查询
/**
* 按用户统计数据导出
*
* @param condition
* @return
*/
public ResultResponse<String> exportExcelByUser(EventAlarmStaticsCondition condition) {
// 查询数据
ResultResponse<List<JSONObject>> response = eventAlarmStaticsByUser(condition);
if(response.checkFailed() || CollectionUtils.isEmpty(response.getData())){
return ResultResponse.success("");
}
List<String> heads = new ArrayList<>();
// 获取要导出的表头数据
List<EventTypeEntity> typeList = getEventTypeEntityList();
List<String> titles = typeList.stream().map(EventTypeEntity::getEventName).collect(Collectors.toList());
heads.add(Constants.NAME);
heads.add(Constants.TOTAL_EVENT);
heads.add(Constants.AVG_TIME);
heads.addAll(titles);
List<JSONObject> objectList = response.getData();
// 柱状图y轴事件总数数据
List<Double> lineYDataList = new ArrayList<>();
// 柱状图y轴平均处理时长数据
List<Double> timeYDataList = new ArrayList<>();
// 填充折线图y轴数据
for (JSONObject jsonObject : objectList) {
lineYDataList.add(jsonObject.getDoubleValue(Constants.TOTAL_COUNT));
timeYDataList.add(jsonObject.getDoubleValue(Constants.TOTAL_AVG_TIME));
}
// 创建wb并绘制折线图、饼图、柱状图
XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet(ExportFileConstant.eventStaticsNamePrefix);
drawSheetTable(wb, sheet, heads, response.getData(), Constants.USER_NAME);
// 柱状图
ExcelUtils.createBarChart(sheet, lineYDataList, ExportFileConstant.staticsCount, 1, objectList.size(), 0, 0, 4, 30, 0, 10 );
ExcelUtils.createBarChart(sheet, timeYDataList, ExportFileConstant.staticsEfficiency, 1, objectList.size(), 0, 0, 4, 30, 11, 22 );
// 上传文件
String url = upload(wb, ExportFileConstant.eventStaticsNamePrefix);
return ResultResponse.successData(url);
}
/**
* 上传文件
*
* @param wb
* @param fileName
* @return
*/
private String upload (XSSFWorkbook wb, String fileName){
String filePath = fileConfig.getCreatFilePath() + fileName + ExcelTypeEnum.XLSX.getValue();
try {
DownloadUtil.createFolderIfNotExists(fileConfig.getCreatFilePath());
FileOutputStream outputStream = new FileOutputStream(filePath);
wb.write(outputStream);
outputStream.close();
} catch (Exception e) {
log.error("Failed to upload data，exception:{}", e);
return null;
}
//上传到s3
return s3Service.fileUpload(filePath, fileName + ExcelTypeEnum.XLSX.getValue(), S3Tag.shortTerm);
}
- 向sheet中写入数据
/**
* sheet数据
*
* @param sheet
* @param titleList
* @param dataList
* @return
*/
private boolean drawSheetTable(XSSFWorkbook wb, XSSFSheet sheet, List<String> titleList, List<JSONObject> dataList, String groupType) {
boolean result = true;
// 设置样式以及字体样式
XSSFCellStyle headerStyle = ExcelUtils.createHeadCellStyle(wb);
XSSFCellStyle contentStyle = ExcelUtils.createContentCellStyle(wb);
XSSFCellStyle intStyle = ExcelUtils.createContentNumericalCellStyle(wb,"#,##0");
// 获取事件类型数据
List<EventTypeEntity> typeList = getEventTypeEntityList();
List<Integer> countList = new ArrayList<>();
for (EventTypeEntity type : typeList) {
String eventType = Constants.EVENT_TYPE + type.getEventType();
int count = 0;
for (JSONObject jsonObject : dataList) {
count += jsonObject.getIntValue(eventType);
}
countList.add(count);
}
countList.add(dataList.stream().mapToInt(jsonObject -> jsonObject.getIntValue(Constants.TOTAL_COUNT)).sum());
countList.add(dataList.stream().mapToInt(jsonObject -> jsonObject.getIntValue(Constants.TOTAL_AVG_TIME)).sum());
// 根据数据创建excel第一行标题行
XSSFRow row0 = sheet.createRow(0);
for (int i = 0; i < titleList.size(); i++) {
// 设置标题
row0.createCell(i).setCellValue(titleList.get(i));
// 设置标题行样式
row0.getCell(i).setCellStyle(headerStyle);
}
// 填充数据
String period = Constants.PERIOD.equals(groupType) ? Constants.PERIOD : Constants.USER_NAME;
for (int k = 0; k < dataList.size(); k++) {
// 获取每一项的数据
JSONObject data = dataList.get(k);
// 设置每一行的字段标题和数据
XSSFRow row = sheet.createRow(k + 1);
// 标题
row.createCell(0).setCellValue(data.getString(period));
sheet.getRow(k + 1).getCell(0).setCellStyle(contentStyle);
row.createCell(1).setCellValue(data.getString(Constants.TOTAL_COUNT));
sheet.getRow(k + 1).getCell(1).setCellStyle(contentStyle);
// 处理数字过长转成科学计数法问题
BigDecimal avgTimeDecimal = new BigDecimal(data.getString(Constants.TOTAL_AVG_TIME));
row.createCell(2).setCellValue(avgTimeDecimal.toPlainString());
sheet.getRow(k + 1).getCell(2).setCellStyle(contentStyle);
// 设置左边字段样式
for (int j = 0; j < typeList.size(); j++) {
EventTypeEntity entity = typeList.get(j);
String eventTYpeData = data.getString(Constants.EVENT_TYPE + entity.getEventType());
row.createCell(j + 3).setCellValue(eventTYpeData);
// 设置数据样式
sheet.getRow(k + 1).getCell(j + 3).setCellStyle(intStyle);
}
}
// 合计
XSSFRow endRow = sheet.createRow(dataList.size() + 1);
endRow.createCell(0).setCellValue(Constants.TOTAL);
endRow.getCell(0).setCellStyle(contentStyle);
// 事件总数
endRow.createCell(1).setCellValue(countList.get(countList.size() - 2));
endRow.getCell(1).setCellStyle(contentStyle);
// 处理科学计数法问题
BigDecimal bigDecimal = new BigDecimal(countList.get(countList.size() - 1));
endRow.createCell(2).setCellValue(bigDecimal.toPlainString());
endRow.getCell(2).setCellStyle(contentStyle);
for (int i = 3; i <= countList.size(); i++) {
endRow.createCell(i).setCellValue(countList.get(i - 3));
endRow.getCell(i).setCellStyle(contentStyle);
}
return result;
}
- 工具类
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.PresetColor;
import org.apache.poi.xddf.usermodel.XDDFColor;
import org.apache.poi.xddf.usermodel.XDDFSolidFillProperties;
import org.apache.poi.xddf.usermodel.chart.*;
import org.apache.poi.xssf.usermodel.*;
import java.util.List;
public class ExcelUtils {
/**
* 创建表头样式
* @param wb
* @return
*/
public static XSSFCellStyle createHeadCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setWrapText(true);// 设置自动换行
cellStyle.setFillForegroundColor(IndexedColors.BLUE_GREY.getIndex());//背景颜色
cellStyle.setAlignment(HorizontalAlignment.CENTER); //水平居中
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER); //垂直对齐
cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
cellStyle.setBottomBorderColor(IndexedColors.BLACK.index);
cellStyle.setBorderBottom(BorderStyle.THIN); //下边框
cellStyle.setBorderLeft(BorderStyle.THIN); //左边框
cellStyle.setBorderRight(BorderStyle.THIN); //右边框
cellStyle.setBorderTop(BorderStyle.THIN); //上边框
XSSFFont headerFont = wb.createFont(); // 创建字体样式
headerFont.setBold(true); //字体加粗
headerFont.setFontName("宋体"); // 设置字体类型
headerFont.setFontHeightInPoints((short) 12); // 设置字体大小
cellStyle.setFont(headerFont); // 为标题样式设置字体样式
return cellStyle;
}
/**
* 创建标题样式
* @param wb
* @return
*/
public static XSSFCellStyle createTitleCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setAlignment(HorizontalAlignment.CENTER);//水平居中
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);//垂直对齐
cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
cellStyle.setFillForegroundColor(IndexedColors.WHITE1.getIndex());//背景颜色
XSSFFont headerFont1 = wb.createFont(); // 创建字体样式
headerFont1.setBold(true); //字体加粗
headerFont1.setFontName("宋体"); // 设置字体类型
headerFont1.setFontHeightInPoints((short) 16); // 设置字体大小
cellStyle.setFont(headerFont1); // 为标题样式设置字体样式
return cellStyle;
}
/**
* 创建内容样式
* @param wb
* @return
*/
public static XSSFCellStyle createRemarkCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setVerticalAlignment(VerticalAlignment.JUSTIFY);// 两边对齐
cellStyle.setAlignment(HorizontalAlignment.LEFT);// 居左
cellStyle.setWrapText(true);// 设置自动换行
cellStyle.setBorderBottom(BorderStyle.THIN); //下边框
cellStyle.setBorderLeft(BorderStyle.THIN); //左边框
cellStyle.setBorderRight(BorderStyle.THIN); //右边框
cellStyle.setBorderTop(BorderStyle.THIN); //上边框
// 生成12号字体
XSSFFont font = wb.createFont();
font.setColor((short)8);
font.setFontHeightInPoints((short) 12);
cellStyle.setFont(font);
return cellStyle;
}
/**
* 创建内容样式
* @param wb
* @return
*/
public static XSSFCellStyle createContentCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中
cellStyle.setAlignment(HorizontalAlignment.CENTER);// 水平居中
cellStyle.setWrapText(true);// 设置自动换行
cellStyle.setBorderBottom(BorderStyle.THIN); //下边框
cellStyle.setBorderLeft(BorderStyle.THIN); //左边框
cellStyle.setBorderRight(BorderStyle.THIN); //右边框
cellStyle.setBorderTop(BorderStyle.THIN); //上边框
// 生成12号字体
XSSFFont font = wb.createFont();
font.setColor((short)8);
font.setFontHeightInPoints((short) 12);
cellStyle.setFont(font);
return cellStyle;
}
/**
* 创建内容样式
* @param wb
* @return
*/
public static XSSFCellStyle createContentNumericalCellStyle(XSSFWorkbook wb,String format) {
XSSFCellStyle cellStyle = wb.createCellStyle();
XSSFDataFormat dataFormat = wb.createDataFormat();
cellStyle.setDataFormat(dataFormat.getFormat(format));
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中
cellStyle.setAlignment(HorizontalAlignment.CENTER);// 水平居中
cellStyle.setWrapText(true);// 设置自动换行
cellStyle.setBorderBottom(BorderStyle.THIN); //下边框
cellStyle.setBorderLeft(BorderStyle.THIN); //左边框
cellStyle.setBorderRight(BorderStyle.THIN); //右边框
cellStyle.setBorderTop(BorderStyle.THIN); //上边框
// 生成12号字体
XSSFFont font = wb.createFont();
font.setColor((short)8);
font.setFontHeightInPoints((short) 12);
cellStyle.setFont(font);
return cellStyle;
}
/**
* 折线图
*
* @param sheet sheet
* @param chartTitle 折线图标题
* @param lineName 折线名称
* @param xName x轴名称
* @param yName y轴名称
* @param firstRow 开始行
* @param dataEndRow 结束行
* @param startCol 开始列
* @param xAxisCol x轴列
* @param valueCol y轴列
*/
public static void createSheetLineChark(XSSFSheet sheet, String chartTitle,String lineName,String xName,String yName, int firstRow, int dataEndRow, int startCol, int xAxisCol, int valueCol) {
//创建一个画布
XSSFDrawing drawing = sheet.createDrawingPatriarch();
//前四个默认0，[0,4]：从0列4行开始;[7,20]:宽度7个单元格，20向下扩展到20行
//默认宽度(14-8)*12
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, startCol, dataEndRow + 4, startCol + 9, dataEndRow + 28);
//创建一个chart对象
XSSFChart chart = drawing.createChart(anchor);
//标题
chart.setTitleText(chartTitle);
//标题是否覆盖图表
chart.setTitleOverlay(false);
//图例位置
// XDDFChartLegend legend = chart.getOrAddLegend();
// legend.setPosition(LegendPosition.TOP);
//分类轴标(X轴),标题位置
XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
if(StringUtils.isNotBlank(xName))
bottomAxis.setTitle(xName);
//值(Y轴)轴,标题位置
XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
if(StringUtils.isNotBlank(yName))
leftAxis.setTitle(yName);
//CellRangeAddress(起始行号，终止行号， 起始列号，终止列号）
//分类轴标(X轴)数据，单元格范围位置[0, 0]到[0, 6]
XDDFDataSource<String> xData = XDDFDataSourcesFactory.fromStringCellRange(sheet, new CellRangeAddress(firstRow, dataEndRow, xAxisCol, xAxisCol));
//数据1，单元格范围位置[1, 0]到[1, 6]
XDDFNumericalDataSource<Double> values = XDDFDataSourcesFactory.fromNumericCellRange(sheet, new CellRangeAddress(firstRow, dataEndRow, valueCol, valueCol));
//LINE：折线图，
XDDFLineChartData data = (XDDFLineChartData) chart.createData(ChartTypes.LINE, bottomAxis, leftAxis);
//图表加载数据，折线1
XDDFLineChartData.Series series1 = (XDDFLineChartData.Series) data.addSeries(xData, values);
//折线图例标题
if(StringUtils.isNotBlank(lineName))
series1.setTitle(lineName, null);
//直线
series1.setSmooth(false);
//设置标记大小
series1.setMarkerSize((short) 6);
//设置标记样式 无
series1.setMarkerStyle(MarkerStyle.CIRCLE);
// series1.setShowLeaderLines(false);
//绘制
chart.plot(data);
}
/**
* 饼图
*
* @param sheet sheet
* @param chartTitle 标题
* @param firstRow 开始行
* @param dataEndRow 结束行
* @param startCol 开始列
* @param xAxisCol x轴列
* @param valueCol 结束列
*/
public static void createSheetPieChark(XSSFSheet sheet,String chartTitle,int firstRow,int dataEndRow,int startCol,int xAxisCol,int valueCol){
//创建一个画布
XSSFDrawing drawing = sheet.createDrawingPatriarch();
//前四个默认0，[0,4]：从0列4行开始;[7,20]:宽度7个单元格，20向下扩展到20行
//默认宽度(14-8)*12
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, startCol, dataEndRow + 4, startCol + 20, dataEndRow + 40);
//创建一个chart对象
XSSFChart chart = drawing.createChart(anchor);
//标题
chart.setTitleText(chartTitle);
//标题是否覆盖图表
chart.setTitleOverlay(false);
//图例位置
XDDFChartLegend legend = chart.getOrAddLegend();
legend.setPosition(LegendPosition.TOP_RIGHT);
//CellRangeAddress(起始行号，终止行号， 起始列号，终止列号）
//分类轴标数据，
XDDFDataSource<String> xData = XDDFDataSourcesFactory.fromStringCellRange(sheet, new CellRangeAddress(firstRow, dataEndRow, xAxisCol, xAxisCol));
//数据1，单元格范围位置[1, 0]到[1, 6]
XDDFNumericalDataSource<Double> values = XDDFDataSourcesFactory.fromNumericCellRange(sheet, new CellRangeAddress(firstRow, dataEndRow, valueCol, valueCol));
//XDDFChartData data = chart.createData(ChartTypes.PIE3D, null, null);
XDDFChartData data = chart.createData(ChartTypes.PIE, null, null);
//设置为可变颜色
data.setVaryColors(true);
//图表加载数据
data.addSeries(xData, values);
//绘制
chart.plot(data);
}
/**
* 柱状图
*
* @param sheet
* @param chartTitle
* @param firstRow
* @param dataEndRow
* @param startCol
* @param xAxisCol
* @param valueCol
*/
public static void createSheetBarChark(XSSFSheet sheet,String chartTitle,int firstRow,int dataEndRow,int startCol,int xAxisCol,int valueCol){
//创建一个画布
XSSFDrawing drawing = sheet.createDrawingPatriarch();
//前四个默认0，[0,4]：从0列4行开始;[7,20]:宽度7个单元格，20向下扩展到20行
//默认宽度(14-8)*12
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, startCol, dataEndRow + 4, startCol + 20, dataEndRow + 45);
//创建一个chart对象
XSSFChart chart = drawing.createChart(anchor);
//标题
chart.setTitleText(chartTitle);
//标题是否覆盖图表
chart.setTitleOverlay(false);
//图例位置
// XDDFChartLegend legend = chart.getOrAddLegend();
// legend.setPosition(LegendPosition.TOP);
//分类轴标(X轴),标题位置
XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
//值(Y轴)轴,标题位置
XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
//CellRangeAddress(起始行号，终止行号， 起始列号，终止列号）
//分类轴标数据，
XDDFDataSource<String> xData = XDDFDataSourcesFactory.fromStringCellRange(sheet, new CellRangeAddress(firstRow, dataEndRow, xAxisCol, xAxisCol));
//数据1，单元格范围位置[1, 0]到[1, 6]
XDDFNumericalDataSource<Double> values = XDDFDataSourcesFactory.fromNumericCellRange(sheet, new CellRangeAddress(firstRow, dataEndRow, valueCol, valueCol));
//bar：条形图，
XDDFBarChartData bar = (XDDFBarChartData) chart.createData(ChartTypes.BAR, bottomAxis, leftAxis);
leftAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
//设置为可变颜色
bar.setVaryColors(true);
//条形图方向，纵向/横向：纵向
bar.setBarDirection(BarDirection.COL);
//图表加载数据，条形图1
XDDFBarChartData.Series series1 = (XDDFBarChartData.Series) bar.addSeries(xData, values);
//条形图例标题
XDDFSolidFillProperties fill = new XDDFSolidFillProperties(XDDFColor.from(PresetColor.BLUE));
//条形图，填充颜色
series1.setFillProperties(fill);
//绘制
chart.plot(bar);
}
/**
* 创建画布
*
* @param sheet
* @param chartTitle
* @param dataEndRow
* @param startCol
* @return
*/
public static XSSFChart createSheetDrawing(XSSFSheet sheet, String chartTitle, int dataEndRow, int startCol) {
//创建一个画布
XSSFDrawing drawing = sheet.createDrawingPatriarch();
//前四个默认0，[0,4]：从0列4行开始;[7,20]:宽度7个单元格，20向下扩展到20行
//默认宽度(14-8)*12
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, startCol, dataEndRow + 4, startCol + 9, dataEndRow + 28);
//创建一个chart对象
XSSFChart chart = drawing.createChart(anchor);
//标题
chart.setTitleText(chartTitle);
//标题是否覆盖图表
chart.setTitleOverlay(false);
return chart;
}
/**
* 创建折线图
*
* @param sheet
* @param yDataList y轴数据
* @param title
* @param firstRow
* @param endRow
* @param startCol
* @param endCol
*/
public static void createLineChart(XSSFSheet sheet, List<Double> yDataList, String title, int firstRow, int endRow, int startCol, int endCol, int firstRowOffset, int endRowOffset, int startColOffset, int endColOffset) {
//创建一个画布
XSSFChart chart = getSheetDrawing(sheet, title, startCol, firstRowOffset, endRowOffset, startColOffset, endColOffset);
//图例位置
XDDFChartLegend legend = chart.getOrAddLegend();
legend.setPosition(LegendPosition.TOP);
//分类轴标(X轴),标题位置
XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
//值(Y轴)轴,标题位置
XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
//LINE：折线图，
XDDFLineChartData data = (XDDFLineChartData) chart.createData(ChartTypes.LINE, bottomAxis, leftAxis);
// X轴数据
XDDFCategoryDataSource countries = XDDFDataSourcesFactory.fromStringCellRange(sheet, new CellRangeAddress(firstRow, endRow, startCol, endCol));
Double[] doubles = new Double[yDataList.size()];
for (int i= 0; i< yDataList.size(); i++) {
doubles[i] = yDataList.get(i);
}
// Y轴数据
XDDFNumericalDataSource<Double> source = XDDFDataSourcesFactory.fromArray(doubles);
XDDFLineChartData.Series series = (XDDFLineChartData.Series) data.addSeries(countries, source);
series.setTitle(title, null);
//直线
series.setSmooth(false);
//设置标记大小
series.setMarkerSize((short) 6);
//绘制
chart.plot(data);
}
/**
* 饼图
*
* @param sheet sheet
* @param chartTitle 标题
* @param firstRow 开始行
* @param endRow 结束行
* @param startCol 开始列
* @param endCol 结束列
* @param firstRowOffset 饼图开始y坐标偏移量
* @param endRowOffset 饼图结束y坐标偏移量
* @param startColOffset 饼图开始x坐标偏移量
* @param endColOffset 饼图结束x坐标偏移量
*/
public static void createPieChart(XSSFSheet sheet, List<Double> yDataList, String chartTitle, int firstRow, int endRow, int startCol, int endCol, int firstRowOffset, int endRowOffset, int startColOffset, int endColOffset) {
//创建一个画布
XSSFChart chart = getSheetDrawing(sheet, chartTitle, startCol, firstRowOffset, endRowOffset, startColOffset, endColOffset);
//图例位置
XDDFChartLegend legend = chart.getOrAddLegend();
legend.setPosition(LegendPosition.TOP_RIGHT);
//CellRangeAddress(起始行号，终止行号， 起始列号，终止列号）
//分类轴标数据，
XDDFDataSource<String> xData = XDDFDataSourcesFactory.fromStringCellRange(sheet, new CellRangeAddress(firstRow, endRow, startCol, endCol));
Double[] doubles = new Double[yDataList.size()];
for (int i= 0; i< yDataList.size(); i++) {
doubles[i] = yDataList.get(i);
}
// Y轴数据
XDDFNumericalDataSource<Double> values = XDDFDataSourcesFactory.fromArray(doubles);
XDDFChartData data = chart.createData(ChartTypes.PIE, null, null);
//设置为可变颜色
data.setVaryColors(true);
//图表加载数据
data.addSeries(xData, values);
//绘制
chart.plot(data);
}
/**
* 柱状图
*
* @param sheet
* @param yDataList
* @param chartTitle
* @param firstRow
* @param endRow
* @param startCol
* @param endCol
* @param firstRowOffset
* @param endRowOffset
* @param startColOffset
* @param endColOffset
*/
public static void createBarChart(XSSFSheet sheet, List<Double> yDataList, String chartTitle, int firstRow, int endRow, int startCol, int endCol, int firstRowOffset, int endRowOffset, int startColOffset, int endColOffset) {
// 获取画布
XSSFChart chart = getSheetDrawing(sheet, chartTitle, startCol, firstRowOffset, endRowOffset, startColOffset, endColOffset);
//获取或添加图例
XDDFChartLegend legend = chart.getOrAddLegend();
//设置图例的位置
legend.setPosition(LegendPosition.BOTTOM);
//创建 类别轴 放置底部
XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
//创建数据轴 放置左侧
XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
// leftAxis.setTitle(chartTitle);
//创建数据中心 0，0
XDDFCategoryDataSource xs = XDDFDataSourcesFactory.fromStringCellRange(sheet, new CellRangeAddress(firstRow, endRow, startCol, endCol));
Double[] doubles = new Double[yDataList.size()];
for (int i= 0; i< yDataList.size(); i++) {
doubles[i] = yDataList.get(i);
}
XDDFNumericalDataSource<Double> xv = XDDFDataSourcesFactory.fromArray(doubles);
//数据加载
XDDFChartData data = chart.createData(ChartTypes.BAR, bottomAxis, leftAxis);
XDDFChartData.Series series = data.addSeries(xs, xv);
series.setTitle(chartTitle, null);
XDDFBarChartData bar = (XDDFBarChartData) data;
bar.setVaryColors(true);
bar.setBarDirection(BarDirection.COL);
bar.setBarGrouping(BarGrouping.STACKED);
chart.plot(data);
}
/**
* 创建画布
*
* @param sheet
* @param chartTitle
* @param startCol
* @param firstRowOffset
* @param endRowOffset
* @param startColOffset
* @param endColOffset
* @return
*/
private static XSSFChart getSheetDrawing(XSSFSheet sheet, String chartTitle, int startCol, int firstRowOffset, int endRowOffset, int startColOffset, int endColOffset) {
//创建一个画布
XSSFDrawing drawing = sheet.createDrawingPatriarch();
//前四个默认0，[0,4]：从0列4行开始;[7,20]:宽度7个单元格，20向下扩展到20行
//默认宽度(14-8)*12
int lastRowNum = sheet.getLastRowNum();
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, startCol + startColOffset, lastRowNum + firstRowOffset, startCol + endColOffset, lastRowNum + endRowOffset);
//创建一个chart对象
XSSFChart chart = drawing.createChart(anchor);
//标题
chart.setTitleText(chartTitle);
//标题是否覆盖图表
chart.setTitleOverlay(false);
return chart;
}
}
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效果图
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文档链接：http://minio.vm-vas.supremind.io/operation/交通事件统计--按周期统计.xlsx
图片
图片
图片
图片
- 参考链接
https://www.freesion.com/article/3914537989/
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