android 上传Bitmap到服务器端
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Android拍照获取照片路径并上传至服务器+Servlet代码
转载于:https://my.oschina.net/u/2008084/blog/524937
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摘要: 拍照和选择本地图片上传的代码网上很多,但也有的代码在自己程序上跑不起来,所以整的有点尴尬,今天自己的拍照上传和本地图片选择上传代码都已完成。
先来客户端代码【这里只写了主要代码】
先来张效果图,
iv_photo.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {new ActionSheetDialog(SendGoodsDetailsActivity.this).builder().setTitle("上传车辆照片").setCancelable(false).setCanceledOnTouchOutside(false).addSheetItem("拍照上传", SheetItemColor.Blue, new OnSheetItemClickListener() {@Overridepublic void onClick(int which) {// 拍照//设置图片的保存路径,作为全局变量imageFilePath = Environment.getExternalStorageDirectory().getAbsolutePath()+"/filename.jpg";File temp = new File(imageFilePath);Uri imageFileUri = Uri.fromFile(temp);//获取文件的Uri Intent it = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//跳转到相机Activityit.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, imageFileUri);//告诉相机拍摄完毕输出图片到指定的Uri startActivityForResult(it, 102);}}).addSheetItem("相册选择", SheetItemColor.Blue, new OnSheetItemClickListener() {@Overridepublic void onClick(int which) {// 相册选取Intent intent1 = new Intent(Intent.ACTION_GET_CONTENT);intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");startActivityForResult(intent1, 103);}}).show();}});@Overridepublic void onActivityResult(int requestCode, int resultCode, Intent data) {switch(requestCode){ case 102: if (resultCode == Activity.RESULT_OK) { Bitmap bmp = BitmapFactory.decodeFile(imageFilePath); iv_photo.setImageBitmap(bmp); } break; case 103: Bitmap bm = null; // 外界的程序访问ContentProvider所提供数据 可以通过ContentResolver接口 ContentResolver resolver = getContentResolver(); try {Uri originalUri = data.getData(); // 获得图片的uribm = MediaStore.Images.Media.getBitmap(resolver, originalUri); // 显得到bitmap图片// 这里开始的第二部分,获取图片的路径:String[] proj = { MediaStore.Images.Media.DATA };// 好像是android多媒体数据库的封装接口,具体的看Android文档@SuppressWarnings("deprecation")Cursor cursor = managedQuery(originalUri, proj, null, null, null);// 按我个人理解 这个是获得用户选择的图片的索引值int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);// 将光标移至开头 ,这个很重要,不小心很容易引起越界cursor.moveToFirst();// 最后根据索引值获取图片路径String path = cursor.getString(column_index);iv_photo.setImageURI(originalUri); } catch (IOException e) {e.printStackTrace(); } break; }super.onActivityResult(requestCode,resultCode,data);}下面是上传的一个工具类,嘻嘻,从网上找的一个大神的,可以用/** * * 上传工具类 * @author spring sky * Email:vipa1888@163.com * QQ:840950105 * MyName:石明政 */public class UploadUtil { private static final String TAG = "uploadFile"; private static final int TIME_OUT = 10*1000; //超时时间 private static final String CHARSET = "utf-8"; //设置编码 /** * android上传文件到服务器 * @param file 需要上传的文件 * @param RequestURL 请求的rul * @return 返回响应的内容 */ public static String uploadFile(File file,String RequestURL){ String result = null; String BOUNDARY = UUID.randomUUID().toString(); //边界标识 随机生成 String PREFIX = "--" , LINE_END = "\r\n"; String CONTENT_TYPE = "multipart/form-data"; //内容类型 try { URL url = new URL(RequestURL); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setReadTimeout(TIME_OUT); conn.setConnectTimeout(TIME_OUT); conn.setDoInput(true); //允许输入流 conn.setDoOutput(true); //允许输出流 conn.setUseCaches(false); //不允许使用缓存 conn.setRequestMethod("POST"); //请求方式 conn.setRequestProperty("Charset", CHARSET); //设置编码 conn.setRequestProperty("connection", "keep-alive"); conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY); conn.connect(); if(file!=null){ /** * 当文件不为空,把文件包装并且上传 */ DataOutputStream dos = new DataOutputStream( conn.getOutputStream()); StringBuffer sb = new StringBuffer(); sb.append(PREFIX); sb.append(BOUNDARY); sb.append(LINE_END); /** * 这里重点注意: * name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件 * filename是文件的名字,包含后缀名的 比如:abc.png */ sb.append("Content-Disposition: form-data; name=\"img\"; filename=\""+file.getName()+"\""+LINE_END); sb.append("Content-Type: application/octet-stream; charset="+CHARSET+LINE_END); sb.append(LINE_END); dos.write(sb.toString().getBytes()); InputStream is = new FileInputStream(file); byte[] bytes = new byte[1024]; int len = 0; while((len=is.read(bytes))!=-1){ dos.write(bytes, 0, len); } is.close(); dos.write(LINE_END.getBytes()); byte[] end_data = (PREFIX+BOUNDARY+PREFIX+LINE_END).getBytes(); dos.write(end_data); dos.flush(); /** * 获取响应码 200=成功 * 当响应成功,获取响应的流 */ int res = conn.getResponseCode(); if(res==200){ InputStream input = conn.getInputStream(); StringBuffer sb1= new StringBuffer(); int ss ; while((ss=input.read())!=-1){ sb1.append((char)ss); } result = sb1.toString(); System.out.println(result); } } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return result; }}在下就是调用上传的方法了,这里我给摘出来了File file = new File(path); //这里的path就是那个地址的全局变量String result = UploadUtil.uploadFile(file, RequestURL);这里客户端就完成了,下面就是服务端代码,这里我用的是servletpublic class UploadShipServlet extends HttpServlet {private static final long serialVersionUID = 1L;private String path;public UploadShipServlet() {super();}public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {this.doPost(request, response);}protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("text/html;charset=utf-8");request.setCharacterEncoding("utf-8");response.setCharacterEncoding("utf-8");PrintWriter out = response.getWriter();// 创建文件项目工厂对象DiskFileItemFactory factory = new DiskFileItemFactory();// 设置文件上传路径String upload = this.getServletContext().getRealPath("/");// 获取系统默认的临时文件保存路径,该路径为Tomcat根目录下的temp文件夹String temp = System.getProperty("java.io.tmpdir");// 设置缓冲区大小为 5Mfactory.setSizeThreshold(1024 * 1024 * 5);// 设置临时文件夹为tempfactory.setRepository(new File(temp));// 用工厂实例化上传组件,ServletFileUpload 用来解析文件上传请求ServletFileUpload servletFileUpload = new ServletFileUpload(factory);// 解析结果放在List中try {List<FileItem> list = servletFileUpload.parseRequest(request);for (FileItem item : list) {String name = item.getFieldName();InputStream is = item.getInputStream();if (name.contains("content")) {System.out.println(inputStream2String(is));} else if (name.contains("img")) {try {path = upload+"\\"+item.getName();inputStream2File(is, path);break;} catch (Exception e) {e.printStackTrace();}}}out.write(path); //这里我把服务端成功后,返回给客户端的是上传成功后路径} catch (FileUploadException e) {e.printStackTrace();System.out.println("failure");out.write("failure");}out.flush();out.close();}// 流转化成字符串public static String inputStream2String(InputStream is) throws IOException {ByteArrayOutputStream baos = new ByteArrayOutputStream();int i = -1;while ((i = is.read()) != -1) {baos.write(i);}return baos.toString();}// 流转化成文件public static void inputStream2File(InputStream is, String savePath) throws Exception {System.out.println("文件保存路径为:" + savePath);File file = new File(savePath);InputStream inputSteam = is;BufferedInputStream fis = new BufferedInputStream(inputSteam);FileOutputStream fos = new FileOutputStream(file);int f;while ((f = fis.read()) != -1) {fos.write(f);}fos.flush();fos.close();fis.close();inputSteam.close();}}
ok了,这样就大功告成了,多整理以后好用得着。
======================================================================================
Last week, I faced a problem to send an image to the server, I have tried a lot of ways, but seemed that nothing would work.
After some research, I found the HTTPClient API , this API helped me to do the dirty work, and it did pretty well. I will show you now, how to upload images and/or strings to the web server.
It’s pretty simple, actually. I gonna do in only one function!
- // create a bitmap variable before anything;
- private Bitmap bitmap;
- // variable to set a name to the image into SD card;
- // this variable, you have to put the path for the File, It's up to you;
- public static String exsistingFileName;
- // sendData is the function name, to call it, you can use something like sendData(null);
- // remember to wrap it into a try catch;
- public void sendData(String[] args) throws Exception {
- try {
- HttpClient httpClient = new DefaultHttpClient();
- HttpContext localContext = new BasicHttpContext();
- // here, change it to your php;
- HttpPost httpPost = new HttpPost("http://www.myURL.com/myPHP.php");
- MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
- bitmap = BitmapFactory.decodeFile(exsistingFileName);
- // you can change the format of you image compressed for what do you want;
- //now it is set up to 640 x 480;
- Bitmap bmpCompressed = Bitmap.createScaledBitmap(bitmap, 640, 480, true);
- ByteArrayOutputStream bos = new ByteArrayOutputStream();
- // CompressFormat set up to JPG, you can change to PNG or whatever you want;
- bmpCompressed.compress(CompressFormat.JPEG, 100, bos);
- byte[] data = bos.toByteArray();
- // sending a String param;
- entity.addPart("myParam", new StringBody("my value"));
- // sending a Image;
- // note here, that you can send more than one image, just add another param, same rule to the String;
- entity.addPart("myImage", new ByteArrayBody(data, "temp.jpg"));
- httpPost.setEntity(entity);
- HttpResponse response = httpClient.execute(httpPost, localContext);
- BufferedReader reader = new BufferedReader(new InputStreamReader( response.getEntity().getContent(), "UTF-8"));
- String sResponse = reader.readLine();
- } catch (Exception e) {
- Log.v("myApp", "Some error came up");
- }
- }
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