Question

我试图让应用程序拍照，然后将照片上传到java中的服务器，但我无法摆脱这个错误

public void makeHTTPCall() {
    prgDialog.setMessage("Invoking JSP");
    AsyncHttpClient client = new AsyncHttpClient();

这是错误：

＆＃34; Class＆＃39;从asynchttpresponsehandler派生的匿名类必须要么被宣布为抽象，要么实现抽象方法 onFailure（int，Header []，byte []，Throwable）in AsyncHttpResponseHandler＆＃34;

    client.post("http://192.168.2.5:9999/ImageUploadWebApp/uploadimg.jsp", params, new AsyncHttpResponseHandler() {

在以下两种方法中，它还表示他们不会超越超类

                @Override
                public void onSuccess(String response) {
                    // Hide Progress Dialog
                    prgDialog.hide();
                    Toast.makeText(getApplicationContext(), response, Toast.LENGTH_LONG).show();
                }

                @Override
                public void onFailure(int statusCode, Throwable error, String content) {
                    // Hide Progress Dialog
                    prgDialog.hide();
                    // When Http response code is '404'
                    if (statusCode == 404) {
                        Toast.makeText(getApplicationContext(), "Requested resource not found", Toast.LENGTH_LONG).show();
                    }
                    // When Http response code is '500'
                    else if (statusCode == 500) {
                        Toast.makeText(getApplicationContext(),
                                "Something went wrong at server end",
                                Toast.LENGTH_LONG).show();
                    }
                    // When Http response code other than 404, 500
                    else {
                        Toast.makeText(
                                getApplicationContext(),
                                "Error Occured \n Most Common Error: \n1. Device not connected to Internet\n2. Web App is not deployed in App server\n3. App server is not running\n HTTP Status code : "
                                        + statusCode, Toast.LENGTH_LONG)
                                .show();
                    }
                }
            });
}

我遵循本教程Tutorial

Answer 1

只需使用以下方法通过json请求发送多个文件...

mImagePath是图像路径的arraylist

// Method for sending files using multiparting......
public static String sendJsonWithFile(Activity mActivity, ArrayList<String> mImagePaths, String jsonString, String URL)
{
    Log.e("json", jsonString);
    String res = "";
    try
    {
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost("http://192.168.2.5:9999/ImageUploadWebApp/uploadimg.jsp");
        String boundary = "*****" + Long.toString(System.currentTimeMillis()) + "*****";
        boundary = "--" + boundary;
        httppost.addHeader("Content-Type", "multipart/form-data; boundary=" + boundary);
        MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);

    StringBody stringBody = new StringBody(jsonString);

    reqEntity.addPart("formstring", stringBody);

    for (int i = 0; i < mImagePaths.size(); i++)
    {
        String imagePath = mImagePaths.get(i);
        if (mImagePaths != null && mImagePaths.size() > 0)
        {

            byte[] filebytes = FileUtils.readFileToByteArray(new File(imagePath));

            ByteArrayBody filebodyImage = new ByteArrayBody(filebytes, "image");
            Log.e("file path=", filebodyImage.toString());

            reqEntity.addPart("image", filebodyImage);

        }

    }

    httppost.setEntity(reqEntity);
    HttpResponse response = httpclient.execute(httppost);
    HttpEntity resEntity = response.getEntity();
    if (resEntity != null)
    {
        res = EntityUtils.toString(resEntity);
        System.out.println(res);
    }

    if (resEntity != null)
    {
        resEntity.consumeContent();
    }
    httpclient.getConnectionManager().shutdown();
}
catch (UnsupportedEncodingException e)
{
    res = "UnsupportedEncodingException";
    e.printStackTrace();
}
catch (ClientProtocolException e)
{
    res = "ClientProtocolException";
    e.printStackTrace();
}
catch (FileNotFoundException e)
{
    res = "FileNotFoundException";
    e.printStackTrace();
}
catch (IOException e)
{
    res = "IOException";
    e.printStackTrace();
}
catch (Exception e)
{
    res = "Exception";
    e.printStackTrace();
}
return res;

}

尝试将图像从Android上传到服务器时出错

1 个答案: