Download text file from JAX-RS

In this tutorial we will discuss about download text files from JAX-RS,  for user to download a file, annotate the method with @Produces("text/plain") :
  1. Put @Produces("text/plain") on service method, with a Response return type. It means the output is a text file.
  2. Set "Content-Disposition" in Response header to tell browser pop up a download box for user to download.

1. Download File in JAX-RS

See a full example to download a text file in 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
public class EmployeeSalarySlip {
 private static final String FILE_PATH = "d:\\salary.log";
 public Response getSalarySlipFile() {
  File file = new File(FILE_PATH);
  ResponseBuilder response = Response.ok((Object) file);
   "attachment; filename=\"salary_slip_file.log\"");
  return response.build();

2. Test

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

Figure : Text file "d:\\salary.log" from server is prompt for user to download, with a new file name "salary_slip_file.log"

Download text file from JAX-RS

Download SourceCode
Download text file from JAX-RS.zip

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


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