Example usage for org.jfree.eastwood Parameters parseQueryString

Introduction

In this page you can find the example usage for org.jfree.eastwood Parameters parseQueryString.

Prototype

public static Map parseQueryString(String qs) throws UnsupportedEncodingException 

Source Link

Document

Parses the query string part of a URL.

Usage

From source file:org.jfree.eastwood.ChartApplet.java

/**
 * Starts the applet./*www.ja  v  a2s.com*/
 */
public void start() {
    String chartSpec = getParameter("chart");
    try {
        Map params = Parameters.parseQueryString(chartSpec);
        JFreeChart chart = ChartEngine.buildChart(params, new Font("Dialog", Font.PLAIN, 12));
        this.chartPanel.setChart(chart);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
}

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From source file:org.geotools.renderer.chart.ChartGraphicFactory.java

public Icon getIcon(Feature feature, Expression urlExpression, String format, int size) throws Exception {
    // evaluate the expression as a string, get the query params
    String url = urlExpression.evaluate(feature, String.class);
    if (!validRequest(url, format))
        return null;
    Map params = Parameters.parseQueryString(url.substring(HTTP_CHART.length()));

    // build the chart, guess its optimal size, return the icon representing it
    JFreeChart chart = ChartEngine.buildChart(params);
    int[] chartSize = computeChartSize(size, params);
    return new ImageIcon(drawChart(chart, chartSize[0], chartSize[1]));
}

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From source file:org.geotools.renderer.chart.ChartGraphicFactory.java

/**
 * This method has been provided as a test utility only
 *///w  ww.j  a  v  a 2 s.  c o  m
JFreeChart getChart(Feature feature, Expression urlExpression, String format, int size) throws Exception {
    // evaluate the expression as a string, get the query params
    String url = urlExpression.evaluate(feature, String.class);
    if (!validRequest(url, format))
        return null;
    Map params = Parameters.parseQueryString(url.substring(HTTP_CHART.length()));

    // build the chart, guess its optimal size, return the icon representing it
    return ChartEngine.buildChart(params);
}

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From source file:org.jfree.eastwood.ChartServlet.java

/**
 * Process a GET request.//from ww w . j  a  v a 2  s  .  c o m
 *
 * @param request  the request.
 * @param response  the response.
 *
 * @throws ServletException if there is a servlet related problem.
 * @throws IOException if there is an I/O problem.
 */
public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    OutputStream out = response.getOutputStream();

    try {
        Map params = Parameters.parseQueryString(request.getQueryString());
        JFreeChart chart = ChartEngine.buildChart(params, this.font);

        if (chart != null) {
            response.setContentType("image/png");

            // *** CHART SIZE ***
            String[] size = (String[]) params.get("chs");
            int[] dims = new int[2];
            if (size != null) {
                dims = parseChartDimensions(size[0]);
            } else {
                dims = new int[] { 200, 125 };
            }

            ChartUtilities.writeChartAsPNG(out, chart, dims[0], dims[1]);
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        out.close();
    }

}

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