android - 使用 Facebook Android SDK 3.0 上传照片时出现间歇性 SSL 错误

Question

我正在使用 Facebook Android SDK 3.0 将照片上传到我的相册。一切正常，但有时第一次上传会因某种意外的 SSL 错误而失败。

参见 Request.java 中的函数 toHttpConnection .

try {
        connection = createConnection(url);

        serializeToUrlConnection(requests, connection);
    } catch (IOException e) {
        // THIS IS WHERE THE ERROR ORIGINATES FROM!
        throw new FacebookException("could not construct request body", e);
    } catch (JSONException e) {
        throw new FacebookException("could not construct request body", e);
    }

在 Eclipse 中将鼠标悬停在 e 上会显示以下信息:

javax.net.ssl.SSLException:写入错误:ssl=0x4f033008:系统调用期间发生 I/O 错误，管道损坏javax.net.ssl.SSLException:写入错误:ssl=0x4f033008:系统调用期间出现 I/O 错误，管道损坏写入错误:ssl=0x4f033008:系统调用期间出现 I/O 错误，管道损坏[1277468208, 0, 1279934152, 48, 1280860304, 26, 1280860480, 58, 1280859576, 11, 1280859696, 4, 1277492792, 1, 1280859640, 7, 1280233152, 169, 1280233264, 36, 1280230744, 6, 1280236632, 0, 1280236576 , 0, 1280238568, 6, 1280238512, 2, 1278731744, 21, 1279835640, 23, 1278097880, 2, 1279841920, 28, 1279843376, 2, 1277300032, 6]无

这是 SDK 中的错误吗？还有其他人遇到过这个吗？更重要的是，我该如何修复它？

Answer 1

在我看到这篇文章之前，我几乎准备接受我之前的(删除的)答案:http://vikaskanani.wordpress.com/2011/01/11/android-upload-image-or-file-using-http-post-multi-part/

我决定试一试，它似乎奏效了!这是我的代码:

for (Bitmap b : bitmaps) {
    // id is just a string
    String response = executeUpload(b, id);

    // do something with the response
}

private String executeUpload(Bitmap b, String id) throws MalformedURLException, IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    b.compress(CompressFormat.PNG, 100, baos);
    byte[] data = baos.toByteArray();

    HttpPost postRequest = new HttpPost("https://graph.facebook.com/me/photos");
    HttpParams params = new BasicHttpParams();
    HttpConnectionParams.setConnectionTimeout(params, 3000);
    HttpClient httpClient = new DefaultHttpClient();
    httpClient.setHttpRequestRetryHandler(new DefaultHttpRequestRetryHandler(2, true));

    ByteArrayBody bab = new ByteArrayBody(data, id + ".png");
    MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
    reqEntity.addPart("access_token", new StringBody(activeFacebookAccessToken));
    reqEntity.addPart("message", new StringBody(""));
    reqEntity.addPart("picture", bab);
    postRequest.setEntity(reqEntity);
    HttpResponse response = httpClient.execute(postRequest);
    BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8"));
    String s;
    StringBuilder builder = new StringBuilder();
    while ((s = reader.readLine()) != null) {
        builder = builder.append(s);
    }

    return builder.toString();
}

如以上链接所述，您必须安装最新的 HttpClient(位于 http://hc.apache.org/downloads.cgi )。

另一个需要注意的重要事项是 Facebook 在任一维度上支持的最大图像尺寸为 720 像素。在我的代码中，我在上传之前将位图缩放到该大小限制内，这大大提高了性能。