/**

* 折线图的数据写入方法

* @param slide ppt图表

* @param index 折线图的下标

* @param data 需要填充的数据

* @param titles 内嵌Excel的X轴title

* @param columnTitles 内嵌Excel的Y轴title

* @return

* @throws IOException

*/

@SuppressWarnings("unused")

public static XSLFSlide setLineChart(XSLFSlide slide, int index, List> data, List titles,

List columnTitles) throws IOException {

XSLFChart chart = setChartData(slide, index);

List partList = chart.getRelations();

POIXMLDocumentPart xlsPart = null;

// 获取到内嵌的Excel

for (int i = 0; i < partList.size(); i++) {

xlsPart = partList.get(i);

if (xlsPart.getPackagePart().getPartName().getName().endsWith("xlsx")) {

break;

}

}

CTChart ctChart = chart.getCTChart();

CTPlotArea plotArea = ctChart.getPlotArea();

CTLineChart lineChart = null;

try {

lineChart = plotArea.getLineChartArray(0);

} catch (Exception e) {

log.error("异常:" + e);

}

if (lineChart == null) {

return slide;

}

List serList = lineChart.getSerList();

// 如果模板中的列数与Excel数据中的列不对等

if (serList.size() > columnTitles.size()) {

serList = serList.subList(0, columnTitles.size());

} else if (serList.size() < columnTitles.size()) {

for (int i = 0; i < (columnTitles.size() - serList.size()); i++) {

serList.add(serList.get(0));

}

}

Object[] objArr = serList.toArray();

CTLineSer[] serArr = new CTLineSer[serList.size()];

for (int i = 0; i < objArr.length; i++) {

if (serList.toArray()[i] instanceof CTLineSer) {

serArr[i] = (CTLineSer) objArr[i];

}

}

lineChart.setSerArray(serArr);

// 把图表绑定到Excel workbook中

XSSFWorkbook wb = new XSSFWorkbook();

XSSFSheet sheet = wb.createSheet();

// 创建列标题行

Row lineTitle = sheet.createRow(0);

int rowNum = sheet.getLastRowNum();

// 创建并设置列标题行

CTStrData strData = serList.get(0).getCat().getStrRef().getStrCache();

strData.setPtArray(null);

for (int i = 0; i < titles.size(); i++) {

lineTitle.createCell(i + 1).setCellValue(titles.get(i));

CTStrVal sVal = strData.addNewPt();

sVal.setIdx(i);

sVal.setV(titles.get(i));

}

// 如果只是折线图，则需要设置行

// 创建行数和行标题

for (int rows = 0; rows < columnTitles.size(); rows++) {

sheet.createRow(rows + 1).createCell(0).setCellValue(columnTitles.get(rows));

}

for (int i = 0; i < serList.size(); i++) {

CTLineSer ser = serList.get(i);

CTSerTx tx = ser.getTx();

tx.getStrRef().getStrCache().getPtArray(0).setV(columnTitles.get(i));

// 关联列标题

String titleRef = new CellReference(sheet.getSheetName(), i + 1, 0, true, true).formatAsString();

tx.getStrRef().setF(titleRef);

// 写入数据

CTNumData numData = serList.get(i).getVal().getNumRef().getNumCache();

// 清除旧的数据值

numData.setPtArray(null);

// 每一格

for (int j = 0; j < data.size(); j++) {

CTNumVal numVal = numData.addNewPt();

numVal.setIdx(j);

numVal.setV("" + getDataDouble(data, j, i));

// 写入workbook

Row row = sheet.getRow(i + 1);

Cell cell = row.createCell(j + 1);

cell.setCellValue(getDataDouble(data, j, i));

}

numData.getPtCount().setVal(data.size());

// 设置行标题和数据关联

String numDataRange = new CellRangeAddress(i + 1, i + 1, 1, data.size()).formatAsString(sheet.getSheetName(), true);

serList.get(i).getVal().getNumRef().setF(numDataRange);

}

// 关联行标题

String axisDataRange = new CellRangeAddress(0, 0, 1, data.size()).formatAsString(sheet.getSheetName(), true);

serList.get(0).getCat().getStrRef().setF(axisDataRange);

// 更新嵌入的workbook

updateWorkbook(xlsPart, wb);

return slide;

}

/**

* 更新嵌入的workbook

* @param ppt

* @param xlsPart

* @param wb

* @return

*/

private static void updateWorkbook(POIXMLDocumentPart xlsPart, XSSFWorkbook wb) {

// 更新嵌入的workbook

OutputStream xlsOut = xlsPart.getPackagePart().getOutputStream();

try {

wb.write(xlsOut);

} catch (IOException e) {

log.error("PPTUtil.updateWorkbook() :" + e);

} finally {

try {

xlsOut.close();

} catch (IOException e) {

log.error("PPTUtil.updateWorkbook() :" + e);

}

}

}