Dinesh on Java

1. Put @Produces(“application/vnd.ms-excel”) on service method, with a Response return type. It means the output is a ms excel file.
2. Set “Content-Disposition” in Response header to tell browser pop up a download box for user to download.

1. Download Excel file in JAX-RS

Full example to download an ms excel file from JAX-RS.

package com.dineshonjava.ws.rest;

import java.io.File;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;

/**
 * @author Dinesh Rajput
 *
 */
@Path("/excel")
public class ExcelFileService {
 private static final String EXCEL_PATH = "d:Contact.xls";
  
 @GET
 @Path("/get")
 @Produces("application/vnd.ms-excel")
 public Response getContactExcelFile() {
 
  File file = new File(EXCEL_PATH);
 
  ResponseBuilder response = Response.ok((Object) file);
  response.header("Content-Disposition",
   "attachment; filename="contact_excel_file.xls"");
  return response.build();
 
 }
}

2. Test

Deploy above JAX-RS service, access this URI pattern : “http://localhost:8181/sdnext/doj/excel/get”.

Figure : MS-Excel file “d:Contact.xls” from server is prompt for user to download, with a new me excel file name “contact_excel_file.xls”

Download SourceCode
Download excel file from JAX-RS.zip

References
1. JAVA REST Web Services
2. Wikipedia for REST Web Service