jasperreport如何通过JSP调用生成文件

Question

我把.jrxml和.jasper文件放到myeclipse项目中，导入相关的包了，但通过jsp按扭去调用生成报表文件方法，怎么找不到路径？
我用main方法去测试是可以生成。这是怎么回事？
其代码如下：
index.jsp页面：

servlet代码:
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

    response.setContentType("text/html;charrset=GBK");
    ResultSet resultSet = null;
     Connection con = JDBC.getConnection();    
      PreparedStatement statement;
    try {
        statement = con.prepareStatement(     
            "select * from fruitSell "      
         );
         resultSet = statement.executeQuery();  
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }      

      JRResultSetDataSource result =     
         new JRResultSetDataSource( resultSet );    
      JasperReport jasperReport;
    try {
        jasperReport = JasperCompileManager.compileReport(getServletContext().getRealPath("reports/fruitSell.jrxml"));

      JasperPrint jasperPrint =     
         JasperFillManager.fillReport(     
            jasperReport, new HashMap(), result     
         );    

      JasperExportManager.exportReportToPdfFile(    
         jasperPrint, "reports/fruitSell1.pdf"  
      ); 
    } catch (JRException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } 
    getServletContext().getRequestDispatcher("/doIndex.jsp").forward(request, response);
}

Answer 1

[quote]
现在是生成不了。到
JasperExportManager.exportReportToPdfFile(

jasperPrint, "reports/fruitSell1.pdf"

);
这一步又说打不到路径了
[/quote]

lz改成用exportReportToPdfStream方法把结果导出为一个outputstream，再用servlet中的out对象 写回客户端去