android上傳圖片與顯示

   android上傳圖片然後在加載出來顯示。

   網上看了看,大部分用的是以流的方式post過去。

  首先android端：(只貼出關鍵性代碼)

  以下是裝載ImageView顯示圖片並且得到裝載後的圖片的路徑picPath

@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if (resultCode == Activity.RESULT_OK && requestCode == TO_SELECT_PHOTO) {
			picPath = data.getStringExtra(SelectPicActivity.KEY_PHOTO_PATH);
			File file = new File(picPath);
			if (file != null && file.exists()) {
				Options opts = new Options();
				opts.inSampleSize = 4;
				Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), opts);
				btn_add_camera.setImageBitmap(bitmap);
			}
		}
		super.onActivityResult(requestCode, resultCode, data);
	}

以下是返回的結果

case R.id.btn_add_camera://相機按鈕
			Intent intent = new Intent(AddCataLogActivity.this, SelectPicActivity.class);
			startActivityForResult(intent, TO_SELECT_PHOTO);
			break;

有以上兩步之後就可以上傳了

if(!picPath.equals("")){//post上傳
					String actionUrl = "http://192.168.1.155:8886/FruitProject/GreenServlet";
					UpLoadImg.uploadImg(actionUrl, picPath);
				}

以上的uploadImg會打包

最後一步就是servlet端接受了

//post傳照片
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		response.setContentType("text/html;charset=UTF-8");
			//先上傳圖片 之後再添加到數據庫
		SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHms");
		String cp11111 = request.getSession().getServletContext().getRealPath("/") + "Img/";
		ImgName = format.format(new Date()) + ".jpg";// 時間的格式(圖片字段)
		try {
			DiskFileItemFactory factory = new DiskFileItemFactory();
			ServletFileUpload upload = new ServletFileUpload(factory);
			List<FileItem> list = upload.parseRequest(request);
			System.out.println(list + " list " + list.size());
			for (FileItem item : list) {
				if (item.isFormField() == false) {
					File f = new File(cp11111 + ImgName);
					item.write(f);
					System.out.println("write filt success");
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

  如此的簡單。。。。。

 顯示出來就更簡單了，一句代碼。

mApplication.mGalleryBitmap.display(holder.myimg, "http://192.168.1.155:8886/FruitProject/Img/" + Listcatalog.getImgpath());