Android HttpClient post MultipartEntity

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.ziphttpcomponents-client-4.2.5libhttpmime-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:
" + 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

更多0

• 上一篇http Content-Type一览表
• 下一篇Android ImageView图片自适应

顶