Question

我在 iReport-4.5.0

中创建了一个jasper报告

但现在我必须在我的java web应用程序中查看此报告，该应用程序位于 Spring ，

这是我的JSP文件：

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML>

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>JSP Page</title>
</head>
<body>
    <h2>Hello World!</h2>
    <%@ page  import="java.io.*"%> 
    <%@ page  import="java.sql.Connection"%> 
    <%@ page  import="java.sql.DriverManager"%>
    <%@ page  import="java.util.HashMap"%>
    <%@ page  import="java.util.Map"%>
    <%@ page  import="net.sf.jasperreports.engine.*"%>




<%
        Connection conn = null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/cjbranchdb", "root", "root");
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        File reportFile = new File(application.getRealPath("BillReport.jasper"));//your report_name.jasper file
        Map parameters = new HashMap();
        byte[] bytes = JasperRunManager.runReportToPdf(reportFile.getPath(), parameters, conn);

        response.setContentType("application/pdf");
        response.setContentLength(bytes.length);
        ServletOutputStream outStream = response.getOutputStream();
        outStream.write(bytes, 0, bytes.length);
        outStream.flush();
        outStream.close();
 %> 
</body>
</html>

我已经很好地构建它并在浏览器上运行，但它会出现以下错误......

exception

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: [79] in the generated java file: [C:\Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\work\Catalina\localhost\SpringCJBranch\org\apache\jsp\WEB_002dINF\jsp\Billviewer_jsp.java]
JasperRunManager cannot be resolved

Stacktrace:
  org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:468)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:264)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

我还在我的网络应用程序项目中为 Jasper Report 添加了 jar 库文件。

无法使用Jasper Report为JSP编译类

0 个答案: