JasperReports:如何在JSP页面中显示报表? [英] JasperReports: how to display report in JSP page?
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问题描述
如何在JSP页面中显示jasper报告?我正在使用 iReport 1.3.3
工具来创建报告。
How to display jasper reports in JSP page? I am using iReport 1.3.3
tool to create reports.
我可以创建报告,但我正在努力在JSP页面中显示该报告。
I am able to create reports but I am struggling to display that report in JSP page.
注意:我需要以PDF格式和Excel格式显示报表。
Note: I need to display the report in PDF and Excel format.
推荐答案
也许我可以选择你的问题。我给你这个例子。
Maybe I can give an option to your question. I give you this example.
package reports;
/**
*
* @author felix
*/
@javax.servlet.annotation.WebServlet(name="Reports", urlPatterns={"/reports"})
public class HtmlReportServlet extends javax.servlet.http.HttpServlet {
//public static final String REPORT_DIRECTORY = "/reports";
@Override
protected void doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, java.io.IOException {
//javax.servlet.ServletContext context = this.getServletConfig().getServletContext();
java.io.InputStream reportSource = getClass().getResourceAsStream("/jrmain/test.jasper");
java.util.Map<String, Object> params = new java.util.HashMap<String, Object>();
org.apache.log4j.Logger logger = org.apache.log4j.Logger.getRootLogger();
logger.setLevel((org.apache.log4j.Level)org.apache.log4j.Level.WARN);
java.io.PrintWriter printWriter = response.getWriter();
try {
net.sf.jasperreports.engine.JasperPrint jasperPrint = net.sf.jasperreports.engine.JasperFillManager.fillReport(reportSource, params, new apps.dbase.DBaseLink().OpenLink());
net.sf.jasperreports.engine.export.JRHtmlExporter htmlExporter = new net.sf.jasperreports.engine.export.JRHtmlExporter();
response.setContentType("text/html");
request.getSession().setAttribute(net.sf.jasperreports.j2ee.servlets.ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, jasperPrint);
htmlExporter.setParameter(net.sf.jasperreports.engine.JRExporterParameter.JASPER_PRINT, jasperPrint);
htmlExporter.setParameter(net.sf.jasperreports.engine.JRExporterParameter.OUTPUT_WRITER, printWriter);
htmlExporter.setParameter(net.sf.jasperreports.engine.export.JRHtmlExporterParameter.IMAGES_URI, "image?image=");
htmlExporter.exportReport();
printWriter.close();
} catch (Exception e) {
// display stack trace in the browser
e.printStackTrace(printWriter);
}
}
}
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