转 Android HttpClient post MultipartEntity - Android 上传文件
转自 http://blog.csdn.net/hellohaifei/article/details/9707089
在Android 中使用HttpClient,MultipartEntity
为了发送图片,文件等资源,现在采用开源的org.apache.http.entity.mime.MultipartEntity
一.去官网http://hc.apache.org/downloads.cgi 下载
可以只下载binary,如果可能需要修改源文件的话,可以直接下载source.
二.导入jar包
将下载下来的httpcomponents-client-4.2.5-bin.zip取其httpcomponents-client-4.2.5-bin.zip\httpcomponents-client-4.2.5\lib\httpmime-4.2.5.jar包
将httpmime-4.2.5.jar包,放到android工程的lib目录下。
三. 查看jar包,
我这里用的是源文件,因为我需要修改些东西
三.使用
- class MyAsyncTask extends AsyncTask<String, Integer, String> {
- String FORM_TABLE_NAME = "ask?action=Chatbottom-toSay-";// 自己需要配置的表单
- String filePath = "/mnt/sdcard/picture.jpg";// 测试写的文件路径,转换成自己的文件路径
- final String hostUrl = "http://www.myhost.com";// 写成自己要上传的地址
- @Override
- protected String doInBackground(String... params) {
- HttpClient httpclient = null;
- httpclient = new DefaultHttpClient();
- final HttpPost httppost = new HttpPost(hostUrl);
- final File imageFile = new File(filePath);
- final MultipartEntity multipartEntity = new MultipartEntity();
- if (false) {
- InputStream in = null;
- try {
- in = new FileInputStream(imageFile);
- } catch (FileNotFoundException e) {
- e.printStackTrace();
- }
- InputStreamBody inputStreamBody = new InputStreamBody(in,
- "android_inputstream.jpg");
- // FormBodyPart formBodyPart = new FormBodyPart(FORM_TABLE_NAME,
- // contentBody);
- multipartEntity.addPart(FORM_TABLE_NAME, inputStreamBody);
- }
- if (false) {
- ContentBody contentBody = new FileBody(imageFile);
- FormBodyPart formBodyPart = new FormBodyPart(FORM_TABLE_NAME,
- contentBody);
- multipartEntity.addPart(formBodyPart);
- }
- if (false) {
- // FileBody fileBody = new FileBody(imageFile, "image/jpeg",
- // "utf-8");
- FileBody fileBody = new FileBody(imageFile);
- multipartEntity.addPart(FORM_TABLE_NAME, fileBody);
- }
- if (true) {
- Bitmap photoBM = BitmapFactory.decodeFile(filePath);
- if (photoBM == null) {
- return null;
- }
- ByteArrayOutputStream photoBao = new ByteArrayOutputStream();
- boolean successCompress = photoBM.compress(CompressFormat.JPEG,
- 80, photoBao);
- if (!successCompress) {
- return null;
- }
- ByteArrayBody byteArrayBody = new ByteArrayBody(
- photoBao.toByteArray(), "android.jpg");
- photoBM.recycle();
- // InputStreamBody inbody = new InputStreamBody(new InputStream,
- // filename);
- multipartEntity.addPart(FORM_TABLE_NAME, byteArrayBody);
- }
- httppost.setEntity(multipartEntity);
- HttpResponse httpResponse;
- try {
- httpResponse = httpclient.execute(httppost);
- final int statusCode = httpResponse.getStatusLine()
- .getStatusCode();
- String response = EntityUtils.toString(
- httpResponse.getEntity(), HTTP.UTF_8);
- IWLog.d("got response:\n" + response);
- if (statusCode == HttpStatus.SC_OK) {
- return "success";
- }
- } catch (ClientProtocolException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- if (httpclient != null) {
- httpclient.getConnectionManager().shutdown();
- httpclient = null;
- }
- }
- return null;
- }
- @Override
- protected void onPostExecute(String result) {
- super.onPostExecute(result);
- if (result.equals("success")) {
- }
- }
- }
四.与HttpURLConnection比较
网上好多人都用的是HttpURLConnection来上传图片,文件。由于我在解决实际问题时HttpURLConnection并不能达到预期,老是死在urlConnection.getInputStream()永远回不来。所以不得以改用的上面的库。最终感觉MultipartEntity用起来比较简单。
附:
在解决实际问题中,我也不是一帆风顺,也遇到了各种抽象的问题。推荐给大家个工具wireshark工具,用于抓取网络协议用的。很有帮助
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