在Excel中提取图表作为图像用java [英] Extracting chart in EXcel as image using java

问题描述

我想exract图片中的文字超链接公式图表etc.in Excel表（OLE2和OOXML格式）。我使用了相同的Java API POI。我能提取所有信息，但图。我发现，POI有用于提取图表或将它们转换为图像没有的API。可一些人建议的替代方式来提取图表。我在寻找开源的解决方案。

I am trying to exract images text formulae Hyperlinks charts etc.in excel sheet (OLE2 and ooxml formats). I am using Java POI API for the same. I am able to extract all information but chart. I find that POI has no APIs for extracting charts or converting them to images. Can some suggest any alternate ways to extract charts. I am looking for opensource solutions.

谢谢，
斯里兰卡拉姆。

Thanks, Sri Ram.

推荐答案

您使用j个XL或阅读Aspose细胞（阅读Aspose是不是免费的）。可以转换或复制图表（图）

You can convert or copy charts(graphs) using J XL or Aspose Cells(Aspose is not free).

这是code片段提取Excel图表图像

This is the code snippet to extract excel chart to image

public class ExportChartToImage
{
    public static void main(String[] args) throws Exception
    {
        //Start Excel
        Application excelApp = new Application();
        excelApp.setVisible(true);

        //Create test workbook
        Workbook workbook = excelApp.createWorkbook("/home/tejus/Desktop/Chart Test");

        //Get the first (and the only) worksheet
        final Worksheet worksheet1 = workbook.getWorksheet(1);

        //Fill-in the first worksheet with sample data
        worksheet1.getCell("A1").setValue("Date");
        worksheet1.getCell("A2").setValue("March 1");
        worksheet1.getCell("A3").setValue("March 8");
        worksheet1.getCell("A4").setValue("March 15");

        worksheet1.getCell("B1").setValue("Customer");
        worksheet1.getCell("B2").setValue("Smith");
        worksheet1.getCell("B3").setValue("Jones");
        worksheet1.getCell("B4").setValue("James");

        worksheet1.getCell("C1").setValue("Sales");
        worksheet1.getCell("C2").setValue("23");
        worksheet1.getCell("C3").setValue("17");
        worksheet1.getCell("C4").setValue("39");

        excelApp.getOleMessageLoop().doInvokeAndWait(new Runnable()
        {
            public void run()
            {
                final Variant unspecified = Variant.createUnspecifiedParameter();
                final Int32 localeID = new Int32(LocaleID.LOCALE_SYSTEM_DEFAULT);

                Range sourceDataNativePeer = worksheet1.getRange("A1:C4").getPeer();
                _Worksheet worksheetNativePeer = worksheet1.getPeer();

                IDispatch chartObjectDispatch = worksheetNativePeer.chartObjects(unspecified, localeID);

                ChartObjectsImpl chartObjects = new ChartObjectsImpl(chartObjectDispatch);
                ChartObject chartObject = chartObjects.add(new DoubleFloat(100), new DoubleFloat(150), new DoubleFloat(300), new DoubleFloat(225));

                _Chart chart = chartObject.getChart();
                chart.setSourceData(sourceDataNativePeer, new Variant(XlRowCol.xlRows));

                BStr fileName = new BStr("/home/tejus/Desktop/chart.gif");
                Variant filterName = new Variant("gif");
                Variant interactive = new Variant(false);

                chart.export(fileName, filterName, interactive);

                chart.setAutoDelete(false);
                chart.release();

                chartObject.setAutoDelete(false);
                chartObject.release();

                chartObjects.setAutoDelete(false);
                chartObjects.release();

                chartObjectDispatch.setAutoDelete(false);
                chartObjectDispatch.release();
            }
        });

        System.out.println("Press 'Enter' to terminate the application");
        System.in.read();

        //Close the MS Excel application.
        boolean saveChanges = false;
        workbook.close(saveChanges);
        boolean forceQuit = true;
        excelApp.close(forceQuit);
    }

}

我用Excel的Ĵ

i used J excel

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