Spring MVC 3.0 Jasper-Reports 4在浏览器中定向HTML报告
问题内容:
我正在使用Spring MVC
3和JasperReports。我已经创建了一些不错的PDF和Xls报告,没有任何问题。我想做的是在屏幕上为用户显示创建的HTML报告,作为他们获取的报告的预览,并包装在网站模板中。有没有办法做到这一点?
我尚未找到有关此主题的任何教程/文章,但确实找到了针对Java开发人员的有关JasperReports
3.5的书。(对此我是菜鸟,请耐心等待。)我的理解是,我必须将输入流重定向到浏览器。我认为必须有一种更简单的方法!还有一种从中剥离HTML报告页眉和页脚的方法。
任何帮助,将不胜感激!
问题答案:
而不是使用另一个框架来解决我的问题。我这样解决了:
@RequestMapping(value = "/report", method = RequestMethod.POST)
public String htmlReport(@RequestParam(value = "beginDate") Date begin,
@RequestParam(value = "endDate", required = false) Date end,
ModelMap map) {
try {
// Setup my data connection
OracleDataSource ds = new OracleDataSource();
ds.setURL("jdbc:oracle:thin:user/password@10.10.10.10:1521:tst3");
Connection conn = ds.getConnection();
// Get the jasper report object located in package org.dphhs.tarts.reports
// Load it
InputStream reportStream = this.getClass().getResourceAsStream("reports/tartsCostAllocation.jasper");
JasperReport jasperReport = (JasperReport) JRLoader.loadObject(reportStream);
// Populate report with data
JasperPrint jasperPrint =
JasperFillManager.fillReport(jasperReport, new HashMap(), conn);
// Create report exporter to be in Html
JRExporter exporter = new JRHtmlExporter();
// Create string buffer to store completed report
StringBuffer sb = new StringBuffer();
// Setup report, no header, no footer, no images for layout
exporter.setParameter(JRHtmlExporterParameter.HTML_HEADER, "");
exporter.setParameter(JRHtmlExporterParameter.HTML_FOOTER, "");
exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE);
// When report is exported send to string buffer
exporter.setParameter(JRExporterParameter.OUTPUT_STRING_BUFFER, sb);
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
// Export the report, store to sb
exporter.exportReport();
// Use Jsoup to clean the report table html to output to browser
Whitelist allowedHtml = new Whitelist();
allowedHtml.addTags("table", "tr", "td", "span");
allowedHtml.addTags("table", "style", "cellpadding", "cellspacing", "border", "bgcolor");
allowedHtml.addAttributes("tr", "valign");
allowedHtml.addAttributes("td", "colspan", "style");
allowedHtml.addAttributes("span", "style");
String html = Jsoup.clean(sb.toString(), allowedHtml);
// Add report to map
map.addAttribute("report", html);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "costallocation/report";
}