## org.springframework.ui.jasperreports
Class JasperReportsUtils

    java.lang.Object
      org.springframework.ui.jasperreports.JasperReportsUtils

    public abstract class JasperReportsUtils

extends Object

Utility methods for working with JasperReports. Provides a set of convenience methods for generating reports in a CSV, HTML, PDF and XLS formats.

Since:
  1.1.3
Author:
  Rob Harrop, Juergen Hoeller

Constructor Summary
`JasperReportsUtils()`

Method Summary
`static net.sf.jasperreports.engine.JRDataSource` `convertReportData(Object value)` Convert the given report data value to a `JRDataSource`.
`static void` `render(net.sf.jasperreports.engine.JRExporter exporter, net.sf.jasperreports.engine.JasperPrint print, OutputStream outputStream)` Render the supplied `JasperPrint` instance using the supplied `JRAbstractExporter` instance and write the results to the supplied `OutputStream`.
`static void` `render(net.sf.jasperreports.engine.JRExporter exporter, net.sf.jasperreports.engine.JasperPrint print, Writer writer)` Render the supplied `JasperPrint` instance using the supplied `JRAbstractExporter` instance and write the results to the supplied `Writer`.
`static void` `renderAsCsv(net.sf.jasperreports.engine.JasperReport report, Map parameters, Object reportData, Writer writer)` Render a report in CSV format using the supplied report data.
`static void` `renderAsCsv(net.sf.jasperreports.engine.JasperReport report, Map parameters, Object reportData, Writer writer, Map exporterParameters)` Render a report in CSV format using the supplied report data.
`static void` `renderAsHtml(net.sf.jasperreports.engine.JasperReport report, Map parameters, Object reportData, Writer writer)` Render a report in HTML format using the supplied report data.
`static void` `renderAsHtml(net.sf.jasperreports.engine.JasperReport report, Map parameters, Object reportData, Writer writer, Map exporterParameters)` Render a report in HTML format using the supplied report data.
`static void` `renderAsPdf(net.sf.jasperreports.engine.JasperReport report, Map parameters, Object reportData, OutputStream stream)` Render a report in PDF format using the supplied report data.
`static void` `renderAsPdf(net.sf.jasperreports.engine.JasperReport report, Map parameters, Object reportData, OutputStream stream, Map exporterParameters)` Render a report in PDF format using the supplied report data.
`static void` `renderAsXls(net.sf.jasperreports.engine.JasperReport report, Map parameters, Object reportData, OutputStream stream)` Render a report in XLS format using the supplied report data.
`static void` `renderAsXls(net.sf.jasperreports.engine.JasperReport report, Map parameters, Object reportData, OutputStream stream, Map exporterParameters)` Render a report in XLS format using the supplied report data.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### JasperReportsUtils

    public JasperReportsUtils()

Method Detail

### convertReportData

    public static net.sf.jasperreports.engine.JRDataSource convertReportData(Object value)
                                                                      throws IllegalArgumentException

  Convert the given report data value to a `JRDataSource`.

  In the default implementation, a `JRDataSource`, `java.util.Collection` or object array is detected. The latter are converted to `JRBeanCollectionDataSource` or `JRBeanArrayDataSource`, respectively.

  Parameters:
    `value` - the report data value to convert
  Returns:
    the JRDataSource (never `null`)
  Throws:
    `IllegalArgumentException` - if the value could not be converted
  See Also:
    `JRDataSource`, `JRBeanCollectionDataSource`, `JRBeanArrayDataSource`

### render

    public static void render(net.sf.jasperreports.engine.JRExporter exporter,
                              net.sf.jasperreports.engine.JasperPrint print,
                              Writer writer)
                       throws net.sf.jasperreports.engine.JRException

  Render the supplied `JasperPrint` instance using the supplied `JRAbstractExporter` instance and write the results to the supplied `Writer`.

  Make sure that the `JRAbstractExporter` implementation you supply is capable of writing to a `Writer`.

  Parameters:
    `exporter` - the `JRAbstractExporter` to use to render the report
    `print` - the `JasperPrint` instance to render
    `writer` - the `Writer` to write the result to
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed

### render

    public static void render(net.sf.jasperreports.engine.JRExporter exporter,
                              net.sf.jasperreports.engine.JasperPrint print,
                              OutputStream outputStream)
                       throws net.sf.jasperreports.engine.JRException

  Render the supplied `JasperPrint` instance using the supplied `JRAbstractExporter` instance and write the results to the supplied `OutputStream`.

  Make sure that the `JRAbstractExporter` implementation you supply is capable of writing to a `OutputStream`.

  Parameters:
    `exporter` - the `JRAbstractExporter` to use to render the report
    `print` - the `JasperPrint` instance to render
    `outputStream` - the `OutputStream` to write the result to
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed

### renderAsCsv

    public static void renderAsCsv(net.sf.jasperreports.engine.JasperReport report,
                                   Map parameters,
                                   Object reportData,
                                   Writer writer)
                            throws net.sf.jasperreports.engine.JRException

  Render a report in CSV format using the supplied report data. Writes the results to the supplied `Writer`.

  Parameters:
    `report` - the `JasperReport` instance to render
    `parameters` - the parameters to use for rendering
    `writer` - the `Writer` to write the rendered report to
    `reportData` - a `JRDataSource`, `java.util.Collection` or object array (converted accordingly), representing the report data to read fields from
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed
  See Also:
    `convertReportData(java.lang.Object)`

### renderAsCsv

    public static void renderAsCsv(net.sf.jasperreports.engine.JasperReport report,
                                   Map parameters,
                                   Object reportData,
                                   Writer writer,
                                   Map exporterParameters)
                            throws net.sf.jasperreports.engine.JRException

  Render a report in CSV format using the supplied report data. Writes the results to the supplied `Writer`.

  Parameters:
    `report` - the `JasperReport` instance to render
    `parameters` - the parameters to use for rendering
    `writer` - the `Writer` to write the rendered report to
    `reportData` - a `JRDataSource`, `java.util.Collection` or object array (converted accordingly), representing the report data to read fields from
    `exporterParameters` - a `Map` of `exporter parameters`
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed
  See Also:
    `convertReportData(java.lang.Object)`

### renderAsHtml

    public static void renderAsHtml(net.sf.jasperreports.engine.JasperReport report,
                                    Map parameters,
                                    Object reportData,
                                    Writer writer)
                             throws net.sf.jasperreports.engine.JRException

  Render a report in HTML format using the supplied report data. Writes the results to the supplied `Writer`.

  Parameters:
    `report` - the `JasperReport` instance to render
    `parameters` - the parameters to use for rendering
    `writer` - the `Writer` to write the rendered report to
    `reportData` - a `JRDataSource`, `java.util.Collection` or object array (converted accordingly), representing the report data to read fields from
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed
  See Also:
    `convertReportData(java.lang.Object)`

### renderAsHtml

    public static void renderAsHtml(net.sf.jasperreports.engine.JasperReport report,
                                    Map parameters,
                                    Object reportData,
                                    Writer writer,
                                    Map exporterParameters)
                             throws net.sf.jasperreports.engine.JRException

  Render a report in HTML format using the supplied report data. Writes the results to the supplied `Writer`.

  Parameters:
    `report` - the `JasperReport` instance to render
    `parameters` - the parameters to use for rendering
    `writer` - the `Writer` to write the rendered report to
    `reportData` - a `JRDataSource`, `java.util.Collection` or object array (converted accordingly), representing the report data to read fields from
    `exporterParameters` - a `Map` of `exporter parameters`
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed
  See Also:
    `convertReportData(java.lang.Object)`

### renderAsPdf

    public static void renderAsPdf(net.sf.jasperreports.engine.JasperReport report,
                                   Map parameters,
                                   Object reportData,
                                   OutputStream stream)
                            throws net.sf.jasperreports.engine.JRException

  Render a report in PDF format using the supplied report data. Writes the results to the supplied `OutputStream`.

  Parameters:
    `report` - the `JasperReport` instance to render
    `parameters` - the parameters to use for rendering
    `stream` - the `OutputStream` to write the rendered report to
    `reportData` - a `JRDataSource`, `java.util.Collection` or object array (converted accordingly), representing the report data to read fields from
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed
  See Also:
    `convertReportData(java.lang.Object)`

### renderAsPdf

    public static void renderAsPdf(net.sf.jasperreports.engine.JasperReport report,
                                   Map parameters,
                                   Object reportData,
                                   OutputStream stream,
                                   Map exporterParameters)
                            throws net.sf.jasperreports.engine.JRException

  Render a report in PDF format using the supplied report data. Writes the results to the supplied `OutputStream`.

  Parameters:
    `report` - the `JasperReport` instance to render
    `parameters` - the parameters to use for rendering
    `stream` - the `OutputStream` to write the rendered report to
    `reportData` - a `JRDataSource`, `java.util.Collection` or object array (converted accordingly), representing the report data to read fields from
    `exporterParameters` - a `Map` of `exporter parameters`
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed
  See Also:
    `convertReportData(java.lang.Object)`

### renderAsXls

    public static void renderAsXls(net.sf.jasperreports.engine.JasperReport report,
                                   Map parameters,
                                   Object reportData,
                                   OutputStream stream)
                            throws net.sf.jasperreports.engine.JRException

  Render a report in XLS format using the supplied report data. Writes the results to the supplied `OutputStream`.

  Parameters:
    `report` - the `JasperReport` instance to render
    `parameters` - the parameters to use for rendering
    `stream` - the `OutputStream` to write the rendered report to
    `reportData` - a `JRDataSource`, `java.util.Collection` or object array (converted accordingly), representing the report data to read fields from
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed
  See Also:
    `convertReportData(java.lang.Object)`

### renderAsXls

    public static void renderAsXls(net.sf.jasperreports.engine.JasperReport report,
                                   Map parameters,
                                   Object reportData,
                                   OutputStream stream,
                                   Map exporterParameters)
                            throws net.sf.jasperreports.engine.JRException

  Render a report in XLS format using the supplied report data. Writes the results to the supplied `OutputStream`.

  Parameters:
    `report` - the `JasperReport` instance to render
    `parameters` - the parameters to use for rendering
    `stream` - the `OutputStream` to write the rendered report to
    `reportData` - a `JRDataSource`, `java.util.Collection` or object array (converted accordingly), representing the report data to read fields from
    `exporterParameters` - a `Map` of `exporter parameters`
  Throws:
    `net.sf.jasperreports.engine.JRException` - if rendering failed
  See Also:
    `convertReportData(java.lang.Object)`

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