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    如何上传Android的多部分表单数据和图像服务器？表单、图像、上传、部分

    2023-09-06 13:44:14 作者：流浪者

    状态code 500在上传多部分实体的图像在android的code服务器

    HTML表单： （可以添加成功图像服务器）

     ＆LT;形式方法=邮报行动=HTTP：// XYZ / upload_pictureENCTYPE =的multipart / form-data的＆GT;

      样品图片上传表单提交

      ＆LT; BR /＆GT;＆LT; BR /＆GT;

      API密钥：＆LT;输入类型=文本名称=键值=ABC＆GT;＆LT; BR /＆GT;＆LT; BR /＆GT;
      登录：LT;输入类型=文本名称=登陆值=文本＆GT;＆LT; BR /＆GT;
      密码：＆LT;输入类型=密码NAME =密码值=文本＆GT;＆LT; BR /＆GT;＆LT; BR /＆GT;

      物业编号：LT;输入类型=文本名称=property_id值=111＆GT;＆LT; BR /＆GT;
      图片文件：其中;输入类型=文件NAME =图片＆GT;＆LT; BR /＆GT;＆LT; BR /＆GT;

      ＆LT; BR /＆GT;＆LT; BR /＆GT;
      ＆LT;输入类型=提交名称=值=上传图片＆GT;＆LT; BR /＆GT;

    ＆LT; /形式GT;

    的Andr​​oid code： （给状态code 500）

      HttpClient的HttpClient的=新DefaultHttpClient（）;
            HttpPost httppost =新HttpPost（
                    HTTP：// XYZ / upload_picture）;

            尝试 {
                MultipartEntity实体=新MultipartEntity（）;

                entity.addPart（钥匙，新StringBody（ABC））;
                entity.addPart（登陆，新StringBody（ABC））;
                entity.addPart（密码，新StringBody（测试））;
                entity.addPart（property_id，新StringBody（111））;


                档案文件=新的文件（Environment.getExternalStoragePublicDirectory（
                        Environment.DIRECTORY_DCIM）的ToString（）
                        +/Camera/Test.jpg）;
                entity.addPart（图片报，新FileBody（文件））;

                httppost.setEntity（实体）;
                HTT presponse响应= httpclient.execute（httppost）;

                Log.e（测试，SC+ response.getStatusLine（）的getStatus code（））;

                HttpEntity resEntity = response.getEntity（）;

                的BufferedReader读卡器=新的BufferedReader（新的InputStreamReader（
                        。response.getEntity（）的getContent（），UTF-8））;
                字符串sResponse;
                StringBuilder的S =新的StringBuilder（）;

                而（（sResponse = reader.readLine（））！= NULL）{
                    S = s.append（sResponse）;
                }
                Log.e（测试，回应：+ S）;
}赶上（ClientProtocolException E）{
        }赶上（IOException异常E）{
        }

    解决方案 如何使用表单上传图片文件

    如果你像我一样是用多部分上传挣扎。下面是使用95％的code从这个的Andr​​oid的代码片段的解决方案。 

     公共字符串multipartRequest（字符串urlTo，地图＆LT;字符串，字符串＆GT; parmas，文件路径字符串，字符串的FileField，字符串fileMimeType）抛出CustomException {
        HttpURLConnection的连接= NULL;
        DataOutputStream类的OutputStream = NULL;
        的InputStream的InputStream = NULL;

        串twoHyphens = - ;
        字符串边界=*****+ Long.toString（System.currentTimeMillis的（））+*****;
        字符串lineEnd =\ r \ N的;

        字符串结果=;

        INT读取动作，方bytesAvailable，缓冲区大小;
        byte []的缓冲区;
        INT maxBufferSize = 1 * 1024 * 1024;

        的String [] Q = filepath.split（/）;
        INT IDX = q.length  -  1;

        尝试 {
            档案文件=新的文件（文件路径）;
            的FileInputStream的FileInputStream =新的FileInputStream（文件）;

            网址URL =新的URL（urlTo）;
            连接=（HttpURLConnection类）url.openConnection（）;

            connection.setDoInput（真正的）;
            connection.setDoOutput（真正的）;
            connection.setUseCaches（假）;

            connection.setRequestMethod（POST）;
            connection.setRequestProperty（连接，保持活动）;
            connection.setRequestProperty（用户代理，Android的多部分HTTP客户端1.0）;
            connection.setRequestProperty（内容类型，多部分/格式数据;边界=+界）;

            的OutputStream =新DataOutputStream类（connection.getOutputStream（））;
            outputStream.writeBytes（twoHyphens +边界+ lineEnd）;
            outputStream.writeBytes（内容处置：表格数据;名称= \+的FileField +\;文件名= \+ Q [IDX] +\+ lineEnd）;
            outputStream.writeBytes（内容类型：+ fileMimeType + lineEnd）;
            outputStream.writeBytes（内容传输编码：二进制+ lineEnd）;

            outputStream.writeBytes（lineEnd）;

            方bytesAvailable = fileInputStream.available（）;
            BUFFERSIZE = Math.min（方bytesAvailable，maxBufferSize）;
            缓冲区=新的字节[BUFFERSIZE]

            读取动作= fileInputStream.read（缓冲液，0，BUFFERSIZE）;
            而（读取动作大于0）{
                outputStream.write（缓冲液，0，BUFFERSIZE）;
                方bytesAvailable = fileInputStream.available（）;
                BUFFERSIZE = Math.min（方bytesAvailable，maxBufferSize）;
                读取动作= fileInputStream.read（缓冲液，0，BUFFERSIZE）;
            }

            outputStream.writeBytes（lineEnd）;

            //上传POST数据
            迭代器＆LT;字符串＆GT; 。键= parmas.keySet（）迭代（）;
            而（keys.hasNext（））{
                字符串键= keys.next（）;
                字符串值= parmas.get（密钥）;

                outputStream.writeBytes（twoHyphens +边界+ lineEnd）;
                outputStream.writeBytes（内容处置：表格数据;名称= \+按键+\+ lineEnd）;
                outputStream.writeBytes（内容类型：text / plain的+ lineEnd）;
                outputStream.writeBytes（lineEnd）;
                outputStream.writeBytes（值）;
                outputStream.writeBytes（lineEnd）;
            }

            outputStream.writeBytes（twoHyphens +边界+ twoHyphens + lineEnd）;


            如果（200！= connection.getResponse code（））{
                抛出新CustomException（无法上传code：+ connection.getResponse code（）++ connection.getResponseMessage（））;
            }

            的InputStream = connection.getInputStream（）;

            结果= this.convertStreamToString（InputStream的）;

            fileInputStream.close（）;
            inputStream.close（）;
            outputStream.flush（）;
            outputStream.close（）;

            返回结果;
        }赶上（例外五）{
            logger.error（E）;
            抛出新CustomException（E）;
        }

    }

    私人字符串convertStreamToString（InputStream的是）{
        的BufferedReader读卡器=新的BufferedReader（新InputStreamReader的（是））;
        StringBuilder的SB =新的StringBuilder（）;

        串线= NULL;
        尝试 {
            而（（行= reader.readLine（））！= NULL）{
                sb.append（线）;
            }
        }赶上（IOException异常E）{
            e.printStackTrace（）;
        } 最后 {
            尝试 {
                is.close（）;
            }赶上（IOException异常E）{
                e.printStackTrace（）;
            }
        }
        返回sb.toString（）;
    }

    调用code：

      //设置PARAMS
地图＆LT;字符串，字符串＆GT; PARAMS =新的HashMap＆LT;字符串，字符串＆GT;（2）;
        params.put（富，散列）;
        params.put（酒吧，标题）;

字符串结果= multipartRequest（URL_UPLOAD_VIDEO，参数，可以pathToVideoFile，视频，视频/ MP4）;
//下一个解析结果字符串

    Status code 500 during upload multipart entity image to server in android code

    Html form: (can add successfully image to server)

     <form method="post" action="http://xyz/upload_picture" enctype="multipart/form-data">

      Sample Picture Upload Form Submit

      <br/><br/>

      API key: <input type="text" name="key" value="abc"><br/><br/>
      Login: <input type="text" name="login" value="text"><br/>
      Password: <input type="password" name="password" value="text"><br/><br/>

      Property ID:<input type="text" name="property_id" value="111"><br/>
      Picture File:<input type="file" name="picture"><br/><br/>

      <br/><br/>
      <input type="submit" name="" value="Upload Picture"><br/>

    </form>

    Android code : (gives status code 500)

       HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost(
                    "http://xyz/upload_picture");

            try {
                MultipartEntity entity = new MultipartEntity();

                entity.addPart("key", new StringBody("abc"));
                entity.addPart("login", new StringBody("abc"));
                entity.addPart("password", new StringBody("test"));
                entity.addPart("property_id", new StringBody("111"));


                File file = new File(Environment.getExternalStoragePublicDirectory(
                        Environment.DIRECTORY_DCIM).toString()
                        + "/Camera/Test.jpg");
                entity.addPart("picture", new FileBody(file));

                httppost.setEntity(entity);
                HttpResponse response = httpclient.execute(httppost);

                Log.e("test", "SC:" + response.getStatusLine().getStatusCode());

                HttpEntity resEntity = response.getEntity();

                BufferedReader reader = new BufferedReader(new InputStreamReader(
                        response.getEntity().getContent(), "UTF-8"));
                String sResponse;
                StringBuilder s = new StringBuilder();

                while ((sResponse = reader.readLine()) != null) {
                    s = s.append(sResponse);
                }
                Log.e("test", "Response: " + s);
} catch (ClientProtocolException e) {
        } catch (IOException e) {
        }

    解决方案

    If like me you were struggling with multipart upload. Here's a solution using 95% of code from this Android snippet. 

    public String multipartRequest(String urlTo, Map<String, String> parmas, String filepath, String filefield, String fileMimeType) throws CustomException {
        HttpURLConnection connection = null;
        DataOutputStream outputStream = null;
        InputStream inputStream = null;

        String twoHyphens = "--";
        String boundary = "*****" + Long.toString(System.currentTimeMillis()) + "*****";
        String lineEnd = "\r\n";

        String result = "";

        int bytesRead, bytesAvailable, bufferSize;
        byte[] buffer;
        int maxBufferSize = 1 * 1024 * 1024;

        String[] q = filepath.split("/");
        int idx = q.length - 1;

        try {
            File file = new File(filepath);
            FileInputStream fileInputStream = new FileInputStream(file);

            URL url = new URL(urlTo);
            connection = (HttpURLConnection) url.openConnection();

            connection.setDoInput(true);
            connection.setDoOutput(true);
            connection.setUseCaches(false);

            connection.setRequestMethod("POST");
            connection.setRequestProperty("Connection", "Keep-Alive");
            connection.setRequestProperty("User-Agent", "Android Multipart HTTP Client 1.0");
            connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);

            outputStream = new DataOutputStream(connection.getOutputStream());
            outputStream.writeBytes(twoHyphens + boundary + lineEnd);
            outputStream.writeBytes("Content-Disposition: form-data; name=\"" + filefield + "\"; filename=\"" + q[idx] + "\"" + lineEnd);
            outputStream.writeBytes("Content-Type: " + fileMimeType + lineEnd);
            outputStream.writeBytes("Content-Transfer-Encoding: binary" + lineEnd);

            outputStream.writeBytes(lineEnd);

            bytesAvailable = fileInputStream.available();
            bufferSize = Math.min(bytesAvailable, maxBufferSize);
            buffer = new byte[bufferSize];

            bytesRead = fileInputStream.read(buffer, 0, bufferSize);
            while (bytesRead > 0) {
                outputStream.write(buffer, 0, bufferSize);
                bytesAvailable = fileInputStream.available();
                bufferSize = Math.min(bytesAvailable, maxBufferSize);
                bytesRead = fileInputStream.read(buffer, 0, bufferSize);
            }

            outputStream.writeBytes(lineEnd);

            // Upload POST Data
            Iterator<String> keys = parmas.keySet().iterator();
            while (keys.hasNext()) {
                String key = keys.next();
                String value = parmas.get(key);

                outputStream.writeBytes(twoHyphens + boundary + lineEnd);
                outputStream.writeBytes("Content-Disposition: form-data; name=\"" + key + "\"" + lineEnd);
                outputStream.writeBytes("Content-Type: text/plain" + lineEnd);
                outputStream.writeBytes(lineEnd);
                outputStream.writeBytes(value);
                outputStream.writeBytes(lineEnd);
            }

            outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);


            if (200 != connection.getResponseCode()) {
                throw new CustomException("Failed to upload code:" + connection.getResponseCode() + " " + connection.getResponseMessage());
            }

            inputStream = connection.getInputStream();

            result = this.convertStreamToString(inputStream);

            fileInputStream.close();
            inputStream.close();
            outputStream.flush();
            outputStream.close();

            return result;
        } catch (Exception e) {
            logger.error(e);
            throw new CustomException(e);
        }

    }

    private String convertStreamToString(InputStream is) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }

    Calling code:

    //setup params
Map<String, String> params = new HashMap<String, String>(2);
        params.put("foo", hash);
        params.put("bar", caption);

String result = multipartRequest(URL_UPLOAD_VIDEO, params, pathToVideoFile, "video", "video/mp4");
//next parse result string

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