Hello Everyone,
I have integrated Jasper Reports with Struts 1.2.9.I
have written the below code in my action class.At runtime I am getting this
error.
ApplicationDispatcher[/TGMC_DB1-2009] PWC1231: Servlet.service() for servlet
jsp threw exception
java.lang.IllegalStateException: PWC3991: getOutputStream() has already been
called for this response
at
org.apache.coyote.tomcat5.CoyoteResponse.getWriter(CoyoteResponse.java:700)
at
org.apache.coyote.tomcat5.CoyoteResponseFacade.getWriter(CoyoteResponseFacade.java:210)
at
javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:135)
at
org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:171)
at
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:164)
at
org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:221)
at
org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:157)
at
org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:108)
at org.apache.jsp.LeftMenu_jsp._jspService(LeftMenu_jsp.java from
:152)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
This is my code in action class
package com.myapp.struts;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import java.io.InputStream;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.*;
import net.sf.jasperreports.engine.JasperRunManager;
import net.sf.jasperreports.engine.JRResultSetDataSource;
import java.util.HashMap;
import java.sql.ResultSet;
import net.sf.jasperreports.engine.JRException;
import java.io.PrintWriter;
import java.io.StringWriter;
public class ViewReportAction extends Action {
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
String target = new String("success");
try {
ServletOutputStream servletOutputStream =
response.getOutputStream();
ResultSet rs = null;
String report_type = (String)
request.getParameter("report_type");
InputStream reportStream =
getServlet().getServletConfig().getServletContext().getResourceAsStream("F:\\project\\tgmc
next year ibm\\04-oct-2008\\dynamicjasper\\src\\java\\test\\report1.jrxml");
rs = Reports.View_Ementor_list(getDataSource(request));
JRResultSetDataSource resultSetDataSource = new
JRResultSetDataSource(rs);
//THIS LINE IS GENERATING ERROR
JasperRunManager.runReportToPdfStream(reportStream,
servletOutputStream, new HashMap(), resultSetDataSource);
response.setContentType("application/pdf");
servletOutputStream.flush();
servletOutputStream.close();
}
catch (JRException e) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
e.printStackTrace(printWriter);
response.setContentType("text/plain");
response.getOutputStream().print(stringWriter.toString());
}
catch (Exception ex) {
System.out.println(ex.getMessage());
}
return mapping.getInputForward();
}
}
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