restful檔案下載功能實現
阿新 • • 發佈:2019-02-15
// private static final byte[] UTF8_BOM = {(byte)0xEF, (byte)0xBB, (byte)0xBF};
// private static final String FAV_ICO = "fav.ico";
// @GET
// @Path("/getFile")
// @Produces(MediaType.APPLICATION_OCTET_STREAM)
// public Response getFile(@PathParam("fileName") String fileName) throws IOException{
// ByteArrayOutputStream bos = new ByteArrayOutputStream();
//
// ZipOutputStream zos = new ZipOutputStream(bos);
//
// try {
// zos.putNextEntry(new ZipEntry("utf-8.txt"));
// zos.write(UTF8_BOM);
// zos.write("這是一段UTF-8文字".getBytes("UTF-8"));
// zos.closeEntry();
// zos.flush();
// zos.finish();
// return Response.ok(bos.toByteArray(), "application/zip")
// .header("Content-Disposition", "attachment; filename=demo2.zip")
// .build();
// } catch (IOException e) {
// throw new RuntimeException(e);
// } finally {
// try {
// zos.close();
// } catch (IOException e) {}
// }
// }
@GET
@Path("/getMyFile")
@Produces(MediaType.APPLICATION_OCTET_STREAM)
public Response getMyFile() throws IOException{
File file = new File("123.txt");
// file.createNewFile();
long fileLength = file.length();
ResponseBuilder responseBuilder = Response.ok(file);
responseBuilder.type("application/x-msdownload");
responseBuilder.header("Content-Disposition", "attachment; filename="
+ URLEncoder.encode("123.txt", "UTF-8"));
responseBuilder.header("Content-Length", Long.toString(fileLength));
Response response = responseBuilder.build();
return response;
// private static final String FAV_ICO = "fav.ico";
// @GET
// @Path("/getFile")
// @Produces(MediaType.APPLICATION_OCTET_STREAM)
// public Response getFile(@PathParam("fileName") String fileName) throws IOException{
// ByteArrayOutputStream bos = new ByteArrayOutputStream();
//
// ZipOutputStream zos = new ZipOutputStream(bos);
//
// try {
// zos.putNextEntry(new ZipEntry("utf-8.txt"));
// zos.write(UTF8_BOM);
// zos.write("這是一段UTF-8文字".getBytes("UTF-8"));
// zos.closeEntry();
// zos.flush();
// zos.finish();
// return Response.ok(bos.toByteArray(), "application/zip")
// .header("Content-Disposition", "attachment; filename=demo2.zip")
// .build();
// } catch (IOException e) {
// throw new RuntimeException(e);
// } finally {
// try {
// zos.close();
// } catch (IOException e) {}
// }
// }
@GET
@Path("/getMyFile")
@Produces(MediaType.APPLICATION_OCTET_STREAM)
public Response getMyFile() throws IOException{
File file = new File("123.txt");
// file.createNewFile();
long fileLength = file.length();
ResponseBuilder responseBuilder = Response.ok(file);
responseBuilder.type("application/x-msdownload");
responseBuilder.header("Content-Disposition", "attachment; filename="
+ URLEncoder.encode("123.txt", "UTF-8"));
responseBuilder.header("Content-Length", Long.toString(fileLength));
Response response = responseBuilder.build();
return response;
}
一個是zip一個是檔案,都已OK,晚上再排版,先上班了