如何在pdf的jsp页面中显示jasper报告，正确的库是什么？

Question

这是我运行此代码时的servlet，它什么也没显示。

该错误在第3行的第433列显示“解析错误”：

  

cvc-complex-type.3.2.2：不允许属性'uuid'出现在元素>'jasperReport'中。   org.xml.sax.SAXParseException; lineNumber：3； columnNumber：433; cvc-complex-> type.3.2.2：不允许属性'uuid'出现在元素>'jasperReport'中。

    package servlet;

    import java.io.IOException;
    import java.sql.Connection;

    import javax.servlet.ServletException;
    import javax.servlet.ServletOutputStream;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;

    import net.sf.jasperreports.engine.JasperCompileManager;
    import net.sf.jasperreports.engine.JasperExportManager;
    import net.sf.jasperreports.engine.JasperFillManager;
    import net.sf.jasperreports.engine.JasperPrint;
    import net.sf.jasperreports.engine.JasperReport;
    import net.sf.jasperreports.view.JasperViewer;

    /**
     * Servlet implementation class jasper
     */
    @WebServlet("/jasper")
    public class jasper extends HttpServlet {
        private static final long serialVersionUID = 1L;

        /**
         * @see HttpServlet#HttpServlet()
         */
        public jasper() {
            super();
            // TODO Auto-generated constructor stub
        }

        /**
         * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
         */
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            Connection conn=null;
            try {

            String report="D:\\reportJasper\\Cherry.jrxml";

            JasperReport jasperreport=JasperCompileManager.compileReport(report);
            JasperPrint jp=JasperFillManager.fillReport(jasperreport, null,conn);
            JasperViewer.viewReport(jp);
             JasperExportManager.exportReportToPdfStream(jp,response.getOutputStream());
             response.getOutputStream().flush();
             response.getOutputStream().close();
             ServletOutputStream sos = response.getOutputStream();
             response.setContentType("application/pdf");
             JasperExportManager.exportReportToPdfStream(jp, sos);
            }
            catch(Exception e)
            {

            }
        }

    }

实际上发生了什么？图书馆有没有？

我的图书馆清单