Spring MVC 3.0 Jasper-Reports 4在浏览器中引导HTML报告 [英] Spring MVC 3.0 Jasper-Reports 4 Directing HTML reports in browser

问题描述

我正在使用Spring MVC 3和JasperReports。我创建了一些很棒的PDF和Xls报告没有问题。我想要做的是在屏幕上为用户显示创建的HTML报告，作为他们获得的报告的预览，包含在网站模板中。有没有办法做到这一点？

I am working with Spring MVC 3 and JasperReports. I've created some great PDF and Xls reports without a problem. What I would like to do is display the created HTML report on screen for the user as a preview of the report they are getting, wrapped in the website template. Is there a way to do this?

我没有找到关于这个主题的任何教程/文章，我确实找到了一本关于Java开发人员的JasperReports 3.5的书解决了这个（我这是一个菜鸟，所以请耐心等待。）我对此的理解是我必须将输入流重定向到浏览器。我认为必须有一个更简单的方法！以及从中删除HTML报表页眉和页脚的方法。

I haven't found any tutorials/articles on this subject, I did find a book on JasperReports 3.5 for Java Developers that kind a addressed this. (I'm a noob on this so bear with me.) My understanding of this is that I have to redirect the input stream to the browser. I figure that there must be an easier way! And a way to strip the HTML report header and footer from it.

任何帮助都将不胜感激！

Any help would be appreciated!

推荐答案

而不是使用另一个框架来解决我的问题。我解决了这个问题：

Instead of using another framework to solve my problem. I solved it like this:

@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";
}

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