如何成为Android开发高手

核心提示：384385}386387fileService.delete(this.downloadUrl);388389} catch (Exception e) {390391print(e.toString());392393throw new Exception("下载失败");394395}3963

384

385}

386

387fileService.delete(this.downloadUrl);

388

389} catch (Exception e) {

390

391print(e.toString());

392

393throw new Exception("下载失败");

394

395}

396

397return this.downloadSize;

398

399}

400

401/**

402

403 * 获取Http响应头字段

404

405 * @param http

406

407 * @return

408

409 */

410

411public static Map getHttpResponseHeader(HttpURLConnection http) {

412

413Map header = new LinkedHashMap();

414

415for (int i = 0;; i++) {

416

417String mine = http.getHeaderField(i);

418

419if (mine == null) break;

420

421header.put(http.getHeaderFieldKey(i), mine);

422

423}

424

425return header;

426

427}

428

429/**

430

431 * 打印Http头字段

432

433 * @param http

434

435 */

436

437public static void printResponseHeader(HttpURLConnection http){

438

439Map header = getHttpResponseHeader(http);

440

441for(Map.Entry entry : header.entrySet()){

442

443String key = entry.getKey()!=null ? entry.getKey()+ ":" : "";

444

445print(key+ entry.getValue());

446

447}

448

449}

450

451

452

453private static void print(String msg){