Jasper Report in HTML format

Question

Hi
When I try to open the jasper report on browser ,It displays
the report but not clear.The image does not display on the client.
below is my code ,please help me......
MY Code:
/*3 Preview in HTML format */
File imagedir=null;
JRHtmlExporter exp = new JRHtmlExporter();
StringBuffer sbuf = new StringBuffer();
exp.setParameter(JRHtmlExporterParameter.JASPER_PRINT, print);
exp.setParameter(JRHtmlExporterParameter.OUTPUT_STRING_BUFFER, sbuf);
exp.setParameter(JRHtmlExporterParameter.IMAGES_DIR,imagedir);
exp.exportReport();
out.print(sbuf.toString());
Thanks
By sathesh

Answer 1

Alright there is a dedicated ImageServlet(provided in jasper reporting framework) which is used to Link Static image content along with your HTML report content.
and here is how you have to do it is ??
is by setting few parameters for JRExporter Object and making use of image servlet provided under jasper libraries.
ImageServlet configurations in web.xml:
<servlet>
        <servlet-name>ImageServlet</servlet-name>
        <servlet-class>
            net.sf.jasperreports.j2ee.servlets.ImageServlet
        </servlet-class>
</servlet>
<servlet-mapping>
        <servlet-name>ImageServlet</servlet-name>
        <url-pattern>/imageServlet</url-pattern>
</servlet-mapping>Html Exporter code..
JRExporter exporter = null;
JasperPrint jasperPrint = null;
Connection conn = null;
String sourceFile = ReportService.getReportSourceFile(request);
Map map = ReportService.getParameterMap(sourceFile,request);
String contentType = ReportService.getContentType(sourceFile,request);
if(contentType.startsWith("text/html")){
PrintWriter printWriter = response.getWriter();
try{
   /* Fetching Connection from a Connection Pool VIA a service*/
  conn = DbUtils.getConnection();
  /* Creating a JasperPrint Object*/
  jasperPrint = JasperFillManager.fillReport(sourceFile,map,conn);
exporter = new JRHtmlExporter();                          
  request.getSession().setAttribute(ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, jasperPrint);
   /* printWriter here is a reference for  response.getWriter() */
  exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
  exporter.setParameter(JRExporterParameter.OUTPUT_WRITER,printWriter);                  
  // gonna set url pattern given for Image servlet with a reponse parameter <url-pattern>/imageServlet</url-pattern> 
  exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI,"imageServlet?image=");              
   response.setContentType(contentType);
   /* Would write the HTML content to ServletStream Provided */
  exporter.exportReport();
}catch(Exception exp){
     exp.printStackTrace();
}finally{
  try{
     if(conn != null && !conn.isClosed())
       conn.close();
  }catch(Exception ep){
     ep.printStackTrace();
  }finally{
       conn = null;
       sourceFile = null;
       map = null;
}For any other issues with report format and others try to go through my post.However, you might have to edit your customized settings in terms of image rendering problems or to some customized implementations.
http://forum.java.sun.com/thread.jspa?threadID=5203324&messageID=9811077
Hope that might help :)
REGARDS,
RaHuL