Couchdb 通过 Httpclient 上传图片答案

【问题标题】：Couchdb Upload Image via HttpclientCouchdb 通过 Httpclient 上传图片
【发布时间】：2014-03-11 14:40:10
【问题描述】：

我使用couchdb 构建了一个Android 应用程序，我尝试使用此功能将图像上传到couchdb 文档：

    public JSONObject uploadPicture(PutAttachment putAttachment) {
    JSONObject obj = null;
    try {
        HttpClient httpclient = new DefaultHttpClient();
        HttpPut httpPut = new HttpPut(baseUrl() + putAttachment.getDbName() + "/" + putAttachment.getDocName() + "/attachment?rev=" + putAttachment.getRev());

        ByteArrayEntity img = new ByteArrayEntity(putAttachment.getByteImg());
        httpPut.setEntity(img);

        httpPut.setHeader("Content-Length", "" + (int) img.getContentLength());
        httpPut.setHeader("Content-type", "image/png");
        httpPut.setHeader(authenticate());
        HttpResponse response;

        response = httpclient.execute(httpPut);

        HttpEntity entity = response.getEntity();

        if (entity != null) {

            InputStream instream = entity.getContent();
            obj = new JSONObject(convertStreamToString(instream));
            instream.close();
        }
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (JSONException e) {
        e.printStackTrace();
    }

    return obj;

}

我不知道为什么，但每次我收到ClientProtocolException

之后

httpclient.execute(httpPut).

有人知道

【问题讨论】：

标签： java android apache curl couchdb

【解决方案1】：

我今天为此苦苦挣扎。研究后：How to put image attachment to CouchDB in Android?

我最后得到了这样的东西：

public static HttpResponse makeUpdateRequest(String uri, Bitmap bmp) {
    try {
        HttpPut httpPut = new HttpPut(uri);
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bmp.compress(Bitmap.CompressFormat.PNG, 0, stream);
        ByteArrayEntity entity = new ByteArrayEntity(stream.toByteArray());
        entity.setContentType("image/png");
        entity.setChunked(true);
        httpPut.setEntity(entity);
        return new DefaultHttpClient().execute(httpPut);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

并以流畅的方式调用它：

    HttpResponse updateResponse = makeUpdateRequest(
            AppConfig.WEB_SERVER_DB_URI + uuid + 
            "/attachment?rev=" + revId, bmp);

这是一个很好的阅读： http://wiki.apache.org/couchdb/HTTP_Document_API#Inline_Attachments

【讨论】：