String filepath="test_report.jasper";
ReportHelper report = new ReportHelper();
String outputformat="pdf";
Map map = new HashMap();
map.put("Name", "zhaojackson");
map.put("reportfile", filepath);
map.put("output_format",outputformat);
try {
report.exportToFile("D:/output."+outputformat, map);
public void exportToFile(File file,Map parameters) throws XCException {
checkParameters(parameters);
try {
JasperReport jasperReport = (JasperReport) JRLoader.loadObject(
inputStream);
conn = XCDataSource.getConnection();
jasperprint = JRFiller.fillReport(jasperReport, parameters, conn);
exporter = getExporter();
exporter.setParameter(JRExporterParameter.OUTPUT_FILE, file);
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperprint);
exporter.exportReport();
}
catch (XCException ex) {
throw ex;
}
catch (JRException ex) {
ex.printStackTrace();
throw new XCException("error in generate report.",ex);
}finally{
try {
if (conn != null) {
conn.close();
}
}
catch (SQLException ex1) {
}
}
}
生成pdf为什么是空?
ReportHelper report = new ReportHelper();
String outputformat="pdf";
Map map = new HashMap();
map.put("Name", "zhaojackson");
map.put("reportfile", filepath);
map.put("output_format",outputformat);
try {
report.exportToFile("D:/output."+outputformat, map);
public void exportToFile(File file,Map parameters) throws XCException {
checkParameters(parameters);
try {
JasperReport jasperReport = (JasperReport) JRLoader.loadObject(
inputStream);
conn = XCDataSource.getConnection();
jasperprint = JRFiller.fillReport(jasperReport, parameters, conn);
exporter = getExporter();
exporter.setParameter(JRExporterParameter.OUTPUT_FILE, file);
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperprint);
exporter.exportReport();
}
catch (XCException ex) {
throw ex;
}
catch (JRException ex) {
ex.printStackTrace();
throw new XCException("error in generate report.",ex);
}finally{
try {
if (conn != null) {
conn.close();
}
}
catch (SQLException ex1) {
}
}
}
生成pdf为什么是空?
没有看到什么问题,楼主的代码不全,不然我在我的机器试试
if(output_format.equalsIgnoreCase("pdf")){
exporter=new JRPdfExporter();
}
else if(output_format.equalsIgnoreCase("xls")){
exporter = new JRXlsExporter();
exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS,Boolean.TRUE);
}
else if(output_format.equalsIgnoreCase("cvs"))
exporter=new JRCsvExporter();
else if(output_format.equalsIgnoreCase("html")){
exporter=new JRHtmlExporter();
Map imagesMap=new HashMap();
exporter.setParameter(JRHtmlExporterParameter.IMAGES_MAP, imagesMap);
exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, "images/"); }else if(output_format.equalsIgnoreCase("xml"))
exporter=new JRXmlExporter();
else if(output_format.equalsIgnoreCase("txt")){
exporter=new JRTextExporter();
} else
exporter=new JRPdfExporter(); return exporter;
}
这句代码什么意思?XCDataSource是什么数据源啊?