Why download popup window in browser not showing up when using JAX-RS v.s. standard servlet?
- by masato-san
When I try using standard servlet approach, in my browser the popup window shows up asking me whether to open .xls file or save it.
I tried the exactly same code via JAX-RS and the browser popup won't show up somehow. Has anyone encounter this mystery?
Standard servlet that works:
package local.test.servlet;
import java.io.IOException;
import java.net.URL;
import java.net.URLDecoder;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import local.test.jaxrs.ExcellaTestResource;
import org.apache.poi.ss.usermodel.Workbook;
import org.bbreak.excella.core.BookData;
import org.bbreak.excella.core.exception.ExportException;
import org.bbreak.excella.reports.exporter.ExcelExporter;
import org.bbreak.excella.reports.exporter.ReportBookExporter;
import org.bbreak.excella.reports.model.ConvertConfiguration;
import org.bbreak.excella.reports.model.ReportBook;
import org.bbreak.excella.reports.model.ReportSheet;
import org.bbreak.excella.reports.processor.ReportProcessor;
@WebServlet(name="ExcelServlet", urlPatterns={"/ExcelServlet"})
public class ExcelServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
//C:\Users\m-takayashiki\.netbeans\6.9\config\GF3\domain1
// ================== ?????? =======================
URL templateFileUrl = ExcellaTestResource.class.getResource("?????????.xls");
// /C:/Users/m-takayashiki/Documents/NetBeansProjects/KogaAlpha/build/web/WEB-INF/classes/local/test/jaxrs/?????????.xls
System.out.println(templateFileUrl.getPath());
String templateFilePath = URLDecoder.decode(templateFileUrl.getPath(), "UTF-8");
String outputFileDir = "MasatoExcelHorizontalOutput";
ReportProcessor reportProcessor = new ReportProcessor();
ReportBook outputBook = new ReportBook(templateFilePath, outputFileDir, ExcelExporter.FORMAT_TYPE);
ReportSheet outputSheet = new ReportSheet("??????");
outputBook.addReportSheet(outputSheet);
// ========================================================
// --------------- ?????? -------------------------
reportProcessor.addReportBookExporter(new OutputStreamExporter(response));
System.out.println("wtf???");
reportProcessor.process(outputBook);
System.out.println("done!!");
}
catch(Exception e) {
System.out.println(e);
}
} //end doGet()
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
}//end class
class OutputStreamExporter extends ReportBookExporter {
private HttpServletResponse response;
public OutputStreamExporter(HttpServletResponse response) {
this.response = response;
}
@Override
public String getExtention() {
return null;
}
@Override
public String getFormatType() {
return ExcelExporter.FORMAT_TYPE;
}
@Override
public void output(Workbook book, BookData bookdata, ConvertConfiguration configuration) throws ExportException {
System.out.println(book.getFirstVisibleTab());
System.out.println(book.getSheetName(0));
//TODO write to stream
try {
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=masatoExample.xls");
book.write(response.getOutputStream());
response.getOutputStream().close();
System.out.println("booya!!");
}
catch(Exception e) {
System.out.println(e);
}
}
}//end class
JAX-RS way that won't display popup:
package local.test.jaxrs;
import java.net.URL;
import java.net.URLDecoder;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.Path;
import javax.ws.rs.GET;
import javax.ws.rs.Produces;
import org.apache.poi.ss.usermodel.Workbook;
import org.bbreak.excella.core.BookData;
import org.bbreak.excella.core.exception.ExportException;
import org.bbreak.excella.reports.exporter.ExcelExporter;
import org.bbreak.excella.reports.exporter.ReportBookExporter;
import org.bbreak.excella.reports.model.ConvertConfiguration;
import org.bbreak.excella.reports.model.ReportBook;
import org.bbreak.excella.reports.model.ReportSheet;
import org.bbreak.excella.reports.processor.ReportProcessor;
@Path("excellaTest")
public class ExcellaTestResource {
@Context
private UriInfo context;
@Context
private HttpServletResponse response;
@Context
private HttpServletRequest request;
public ExcellaTestResource() {
}
@Path("horizontalProcess")
@GET
//@Produces("application/vnd.ms-excel")
@Produces("application/vnd.ms-excel")
public void getProcessHorizontally() {
try {
//C:\Users\m-takayashiki\.netbeans\6.9\config\GF3\domain1
// ================== ?????? =======================
URL templateFileUrl = this.getClass().getResource("?????????.xls");
// /C:/Users/m-takayashiki/Documents/NetBeansProjects/KogaAlpha/build/web/WEB-INF/classes/local/test/jaxrs/?????????.xls
System.out.println(templateFileUrl.getPath());
String templateFilePath = URLDecoder.decode(templateFileUrl.getPath(), "UTF-8");
String outputFileDir = "MasatoExcelHorizontalOutput";
ReportProcessor reportProcessor = new ReportProcessor();
ReportBook outputBook = new ReportBook(templateFilePath, outputFileDir, ExcelExporter.FORMAT_TYPE);
ReportSheet outputSheet = new ReportSheet("??????");
outputBook.addReportSheet(outputSheet);
// ========================================================
// --------------- ?????? -------------------------
reportProcessor.addReportBookExporter(new OutputStreamExporter(response));
System.out.println("wtf???");
reportProcessor.process(outputBook);
System.out.println("done!!");
}
catch(Exception e) {
System.out.println(e);
}
//return response;
return;
}
}//end class
class OutputStreamExporter extends ReportBookExporter {
private HttpServletResponse response;
public OutputStreamExporter(HttpServletResponse response) {
this.response = response;
}
@Override
public String getExtention() {
return null;
}
@Override
public String getFormatType() {
return ExcelExporter.FORMAT_TYPE;
}
@Override
public void output(Workbook book, BookData bookdata, ConvertConfiguration configuration) throws ExportException {
//TODO write to stream
try {
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=masatoExample.xls");
book.write(response.getOutputStream());
response.getOutputStream().close();
System.out.println("booya!!");
}
catch(Exception e) {
System.out.println(e);
}
}
}//end class
