使用httpclient发布到twitpic时未找到图像异常

Question

我正在使用commons-httpclient-3.1 jar文件将多部分文件发布到twitpic，我发现图像未找到异常 这是我的代码  HttpClient client = new HttpClient（）;                 client.getHttpConnectionManager（）getParams（）方法setConnectionTimeout（100000）。;

            PostMethod method = new PostMethod("http://twitpic.com/api/uploadAndPost");
            FilePart photo = new FilePart("photo", new ByteArrayPartSource("photo", b));


            photo.setContentType("image/jpeg");
            photo.setCharSet(null); 
            Part[] parts = { new StringPart("service", "Android mobile"),
                    new StringPart("username", "xxxxxx"),
                    new StringPart("password", "xxxxxx"),
                    new StringPart("message", "Test message"),

                     photo }; 



            try {
 method.setRequestEntity(new MultipartRequestEntity(parts, method.getParams())); 
 client.executeMethod(method);
 responseString = method.getResponseBodyAsString();

 method.releaseConnection();
} catch (HttpException e) {
 Log.v("e",e.toString());
 e.printStackTrace();
} catch (IOException e) {
 Log.v("e2",e.toString());
 e.printStackTrace();
} 

finally {
                method.releaseConnection();
        } 

 Log.v( "Response status: " , responseString);

任何建议，为什么我收到此错误以及为什么我无法发布图片？ 谢谢ganesh