java - Android HttpClient 发布文件 MultipartEntity

Question

我正在尝试使用 HttpClient 和 MultipartEntity 将图像从 Adroid 应用程序上传到 php 网络服务器。

这是我的代码 fragment :

protected Void doInBackground(Void... params) {
    HttpClient client = new DefaultHttpClient();
    client.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);

    HttpPost post = new HttpPost( "http://URL/upload.php" );

    try {
        MultipartEntity entity = new MultipartEntity(  );
        entity.addPart("type", new StringBody("photo"));
        entity.addPart("data", new FileBody(new File (this.path)));         
        post.setEntity(entity);
        post.getParams().setBooleanParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, false);             
        post.addHeader( "Content-Type", "multipart/form-data; ");

        HttpResponse response = client.execute(post);
        HttpEntity resEntity = response.getEntity();

        System.out.println(response.getStatusLine());

        client.getConnectionManager().shutdown();
    } catch (UnsupportedEncodingException e) {          
        e.printStackTrace();
    } catch (ClientProtocolException e) {           
        e.printStackTrace();
    } catch (IOException e) {           
        e.printStackTrace();
    }

    return null;
}

在 php 文件中，我添加了 print_r($_FILE) 来查看数组的内容，它显示的是一个空数组。

LogCat 在执行 HttpClient 后显示如下

06-17 14:54:03.908: I/System.out(1256): HTTP/1.1 200 OK
06-17 14:54:03.998: D/111(1256): Array
06-17 14:54:03.998: D/111(1256): (
06-17 14:54:03.998: D/111(1256): )
06-17 14:54:04.068: D/dalvikvm(1256): GC_CONCURRENT freed 200K, 12% free 2559K/2900K, paused 96ms+5ms, total 161ms

谁能告诉我必须向 Android 代码中添加什么？

Answer 1

根据 blog post about using MultipartEntity to post data to a url ，您可能需要在项目中包含一些额外的 jar 文件。它们包括以下 apache 开源项目:apache-mime4j , httpclient, httpcore and httpmime .