jasper report

Jasper reportKhi nim: Jasper report l framework cho php thit k, dch v xut bo co di nhiu nh dng khc nhau nh PDF, Excel, HTML, Java Applet Viewer, plain text. Jasper report l cng ngh m ngun m c pht trin bi Jaspersoft.Thit k bo co: thit k bo co, ta s dng cng c iReport:

Mt bo co bao gm c 7 phn chnh nh trong hnh trn:

Title: phn tiu ca bo co, n xut hin mt ln duy nht ti phn u ca trang u bo co.

Page Header: phn tiu ca tng trang bo co, n xut hin ti phn u ca mi trang bo co.

Colunm Header: phn tiu ca cc ct d liu.

Detail: phn lp li ca bo co. N dng hin th d liu ca bo co.

Colunm Footer: phn kt thc ca cc ct d liu. N thng dng hin th gi tr m s lng, tng hoc tnh trung bnh ca cc gi tr ca ct tng ng.

Page Footer: phn kt thc ca cc trang. N thng c dng tng kt, thng k cc gi tr trong tng trang hoc nh s trang.

Summary: phn hin th tng kt, thng k ca c bo co. N xut hin mt ln duy nht ti cui bo co.

Trong iReport cho php nh ngha datasource dng lm ngun cho bo co. Mc nh, t datasource, iReport s trch xut ra c cc ct d liu (FIELD) phc v cho vic hin th trong phn Detail v cc thng k trong phn Page Footer, Summary. Ngoi ra, jasper report cho php ngi dng nh ngha ra cc tham s (PARAMETER) c th truyn vo trong lc dch bo co; nh ngha cc bin (VARIABLE) cho php tnh ton gi tr t cc parameter, cc field ly t datasource. thit k bo co, ta s dng cc i tng c h tr sn trong panel Palette. Cc i tng quan trng:

Static text: Cho php hin th ni dung mt chui xc nh trc ln bo co.

Text Field: Cho php hin th ni dung ca cc FIELD, PARAMETER, VARIABLE thng qua c php $F{TEN_FIELD}, $P{TEN_PARAMETER}, $V{TEN_VARIABLE}

Line: cho php hin th ng k trn bo co. Lu : mt line khng c.

Image: cho php hin th nh trn bo co Table: cho php hin th datasource khc c nh ngha trong bo co di dng bng d liu.

Sau khi thit k bo co, ta c bo co tng t nh bo co sau:

Kt qu ca bo co sau khi c lu l mt file XML c phn m rng l jrxml. File jrxml ny chnh l file ngun c jasper report s dng trong phn lp trnh web.

Dch bo co: Jasper report cung cp b API dng dch file ngun bo co jrxml thnh file bo co (.jasper) sau khi c truyn cc tham s. dch bo co, ta s dng cc phng thc tnh sau:

jasperReport =JasperCompileManager.compileReport(jrxmlReportPath)jasperPrint = JasperFillManager.fillReport(jasperReport,

jrParameters, jrDataSource)hocjasperPrint = JasperFillManager.fillReport(jasperReport,

jrParameters, connection)Trong :

jrxmlReportPath: l ng dn n file jrxml

jasperReport: l bo co sau khi c dch

jrParamaters: Map cc tham s bo co c truyn

jrDataSource: datasource c truyn vo lm ngun cho bo co

connection: connection dng kt ni vo c s d liu

jasperPrint: bo co sau khi c dch v np d liu thc.Xut bo co: jasper report cho php xut ra tng i nhiu nh dng khc nhau nh PDF, Excel, HTML hay applet viewer.

on code cho php xut bo co di dng PDF:response.setContentType("application/pdf");

response.addHeader("Content-Disposition", "attachment; filename=\"TenFile.pdf\"");

response.setCharacterEncoding("UTF-8");

JRPdfExporter exporter = new JRPdfExporter();

exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);

exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, response.getOutputStream());

exporter.setParameter(JRPdfExporterParameter.CHARACTER_ENCODING, "UTF-8");

exporter.exportReport();

on code cho php xut bo co di dng Excel:response.setContentType("application/vnd.ms-excel");

response.addHeader("Content-Disposition", "attachment; filename=\"TenFile.xls\"");

JRXlsExporter exporterXLS = new JRXlsExporter();

exporterXLS.setParameter(JRXlsExporterParameter.JASPER_PRINT, jasperPrint);

exporterXLS.setParameter(JRXlsExporterParameter.OUTPUT_STREAM, response.getOutputStream());

exporterXLS.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.FALSE);

exporterXLS.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);

exporterXLS.setParameter(JRXlsExporterParameter.IGNORE_PAGE_MARGINS, Boolean.TRUE);

exporterXLS.setParameter(JRXlsExporterParameter.OFFSET_X, 0);

exporterXLS.setParameter(JRXlsExporterParameter.IS_IGNORE_CELL_BORDER, Boolean.FALSE);

exporterXLS.setParameter(JRXlsExporterParameter.IS_DETECT_CELL_TYPE, Boolean.TRUE);

exporterXLS.exportReport();

on code cho php xut bo co di dng HTML:JRHtmlExporter exporter = new JRHtmlExporter();

response.setContentType("text/html");

exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);

exporter.setParameter(JRHtmlExporterParameter.OUTPUT_WRITER, out);

HashMap fontMap = new HashMap();

exporter.setParameter(JRHtmlExporterParameter.FONT_MAP, fontMap);

exporter.setParameter(JRHtmlExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);

exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE);

exporter.exportReport();

on code cho php xut bo co di dng applet viewer:ObjectOutputStream oos = new ObjectOutputStream(response.getOutputStream());

oos.writeObject(jasperPrint);

oos.flush();