Example usage for org.jfree.chart.servlet ServletUtilities saveChartAsJPEG

Introduction

In this page you can find the example usage for org.jfree.chart.servlet ServletUtilities saveChartAsJPEG.

Prototype

public static String saveChartAsJPEG(JFreeChart chart, int width, int height, ChartRenderingInfo info,
        HttpSession session) throws IOException 

Source Link

Document

Saves the chart as a JPEG format file in the temporary directory and populates the ChartRenderingInfo object which can be used to generate an HTML image map.

Usage

From source file:com.glaf.chart.util.ChartUtils.java

public static byte[] createChart(Chart chartModel, JFreeChart chart) {
    ByteArrayOutputStream baos = null;
    BufferedOutputStream bos = null;
    try {//from ww w.  j a  v a  2s . com
        baos = new ByteArrayOutputStream();
        bos = new BufferedOutputStream(baos);
        java.awt.image.BufferedImage bi = chart.createBufferedImage(chartModel.getChartWidth(),
                chartModel.getChartHeight());

        if ("png".equalsIgnoreCase(chartModel.getImageType())) {
            EncoderUtil.writeBufferedImage(bi, chartModel.getImageType(), bos);
            ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
            ServletUtilities.saveChartAsPNG(chart, chartModel.getChartWidth(), chartModel.getChartHeight(),
                    info, null);
        } else if ("jpeg".equalsIgnoreCase(chartModel.getImageType())) {
            EncoderUtil.writeBufferedImage(bi, chartModel.getImageType(), bos);
            ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
            ServletUtilities.saveChartAsJPEG(chart, chartModel.getChartWidth(), chartModel.getChartHeight(),
                    info, null);
        }

        bos.flush();
        baos.flush();

        return baos.toByteArray();

    } catch (Exception ex) {
        throw new RuntimeException(ex);
    } finally {
        IOUtils.closeQuietly(baos);
        IOUtils.closeQuietly(bos);
    }
}

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From source file:com.glaf.chart.util.ChartUtils.java

public static void createChart(String path, Chart chartModel, JFreeChart chart) {
    try {// w  ww  . j  ava 2  s.c o m
        java.awt.image.BufferedImage bi = chart.createBufferedImage(chartModel.getChartWidth(),
                chartModel.getChartHeight());

        String name = chartModel.getChartName();
        if (StringUtils.isNotEmpty(chartModel.getMapping())) {
            name = chartModel.getMapping();
        }

        if ("png".equalsIgnoreCase(chartModel.getImageType())) {
            EncoderUtil.writeBufferedImage(bi, chartModel.getImageType(),
                    new FileOutputStream(path + "/" + name + ".png"));
            ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
            ServletUtilities.saveChartAsPNG(chart, chartModel.getChartWidth(), chartModel.getChartHeight(),
                    info, null);
        } else if ("jpeg".equalsIgnoreCase(chartModel.getImageType())) {
            EncoderUtil.writeBufferedImage(bi, chartModel.getImageType(),
                    new FileOutputStream(path + "/" + name + ".jpg"));
            ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
            ServletUtilities.saveChartAsJPEG(chart, chartModel.getChartWidth(), chartModel.getChartHeight(),
                    info, null);
        }

    } catch (Exception ex) {
        ex.printStackTrace();
        throw new RuntimeException(ex);
    }
}

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