Question

我正在尝试使用以下代码进行Android Multipart POST

   DefaultHttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(urlString);

        File file = new File(pic);

        Log.d(TAG, "UPLOAD: setting up multipart entity");

        MultipartEntity mpEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
        Log.d(TAG, "UPLOAD: file length = " + file.length());
        Log.d(TAG, "UPLOAD: file exist = " + file.exists());

        try {
            mpEntity.addPart("datafile", new FileBody(file, "application/octet"));
            mpEntity.addPart("id", new StringBody("1"));
        } catch (UnsupportedEncodingException e1) {
            Log.d(TAG, "UPLOAD: UnsupportedEncodingException");
            e1.printStackTrace();
        }

        httppost.setEntity(mpEntity);
        Log.d(TAG, "UPLOAD: executing request: " + httppost.getRequestLine());
        Log.d(TAG, "UPLOAD: request: " + httppost.getEntity().getContentType().toString());


        HttpResponse response;
        try {
            Log.d(TAG, "UPLOAD: about to execute");
            response = httpclient.execute(httppost);
            Log.d(TAG, "UPLOAD: executed");
            HttpEntity resEntity = response.getEntity();
            Log.d(TAG, "UPLOAD: respose code: " + response.getStatusLine().toString());
            if (resEntity != null) {
                Log.d(TAG, "UPLOAD: " + EntityUtils.toString(resEntity));
            }
            if (resEntity != null) {
                resEntity.consumeContent();
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

这与

中的“java.lang.noclassdeffounderror org.apache.http.entity.mime.multipartentity”崩溃

    MultipartEntity mpEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);

我的猜测这与我正在使用的外部罐子有关。我的项目中有一个Libs文件夹，我在项目构建路径中引用了以下文件。

httpclient-4.2.jar，httpcore-4.2.jar和httpmime-4.2.jar

这些是正确的版本吗？或者我需要更多JARS？

Answer 1

在Android项目中，在项目的根目录下创建一个名为libs的目录（在src /，res /等旁边）

找到要使用的库的JAR文件，并将其复制到libs /目录中。

Setting Up a Project to Use a Library:

More refer here:

Android Multipart POST需要哪些外部JARS？

1 个答案: