Java 如何使用POST请求发送InputStream_Java_Python_Android Studio_Flask

Java 如何使用POST请求发送InputStream

java python android-studio flask

Java 如何使用POST请求发送InputStream,java,python,android-studio,flask,Java,Python,Android Studio,Flask,我想使用POST请求将一个mp3文件从android studio发送到flask服务器。我已经从设备中读取了一个mp3文件，并存储在输入流对象中。flask服务器将请求标识为POST请求并创建mp3文件。但是当我播放mp3文件时，它不工作。所以连接部分没有任何问题。我想知道如何在POST请求中发送这个inputstream对象，并让它在服务器上成功播放mp3文件（Raspberry Pi）获取mp3文件并存储在inputstream中的部分： if(!DocumentsContract.is

我想使用POST请求将一个mp3文件从android studio发送到flask服务器。我已经从设备中读取了一个mp3文件，并存储在输入流对象中。flask服务器将请求标识为POST请求并创建mp3文件。但是当我播放mp3文件时，它不工作。所以连接部分没有任何问题。我想知道如何在POST请求中发送这个inputstream对象，并让它在服务器上成功播放mp3文件（Raspberry Pi）

获取mp3文件并存储在inputstream中的部分：

if(!DocumentsContract.isDocumentUri(this, data.getData()))
    throw new RuntimeException("Not a documentsContract document");

try {
    InputStream is = getContentResolver().openInputStream(data.getData());

    new Main4Activity.httpAsyncTask417().execute();
} catch (FileNotFoundException e1) {
    e1.printStackTrace();
} catch (IOException e1) {
    e1.printStackTrace();
}

    //if(!DocumentsContract.isDocumentUri(this, data.getData()))
                    //    throw new RuntimeException("Not a documentsContract document");

                    try {
                        is = getContentResolver().openInputStream(data.getData());
                        uri=data.getData();
                        file_name=getFileName(uri);
                        new Main4Activity.httpAsyncTask417().execute();
                    } catch (FileNotFoundException e1) {
                        e1.printStackTrace();
                    } catch (IOException e1) {
                        e1.printStackTrace();
                    }

发送POST请求的部分：

public class httpAsyncTask417 extends AsyncTask<String, Void, Void> {

    @Override
    protected Void doInBackground(String... strings) {

        try {
            String url="http://172.17.57.132/post_songs";
            URL obj=new URL(url);
            HttpURLConnection con = (HttpURLConnection) obj.openConnection();

            //add reuqest header
            con.setRequestMethod("POST");

            String urlParameters = "content=";

            // Send post request
            con.setDoOutput(true);
            DataOutputStream wr = new DataOutputStream(con.getOutputStream());
            wr.writeBytes(urlParameters);
            wr.flush();
            wr.close();

            int responseCode = con.getResponseCode();
            Log.v("HTTPDelete_Check3", "Get returned: " + responseCode);

            BufferedReader in = new BufferedReader(
                    new InputStreamReader(con.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            //print result

        }catch(java.io.IOException ex) {

        }

        return null;
    }

    @Override
    protected void onPostExecute(Void v) {

    }
}

    try {
            String url="http://172.17.59.97/post_songs?title="+file_name;
            URL obj=new URL(url);
            HttpURLConnection con = (HttpURLConnection) obj.openConnection();

            //add reuqest header
            con.setRequestMethod("POST");

            // Send post request
            con.setDoOutput(true);
            DataOutputStream wr = new DataOutputStream(con.getOutputStream());
            /*BufferedReader r = new BufferedReader(new InputStreamReader(is));
            String line;
            while ((line = r.readLine()) != null) {
                wr.writeBytes(line+'\n');
            }*/
            //wr.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + uri.toString() +"\"" + "\r\n");

            byte []buffer = new byte[4096];
            int read = 0;

            while ( (read = is.read(buffer)) != -1 ) {
                wr.write(buffer, 0, read);
            }
            wr.flush();
            wr.close();

            int responseCode = con.getResponseCode();
            Log.v("HTTPDelete_Check3", "Get returned: " + responseCode);

            BufferedReader in = new BufferedReader(
                    new InputStreamReader(con.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            //print result

        }catch(java.io.IOException ex) {

        }

公共类httpAsyncTask417扩展异步任务{
@凌驾
受保护的Void doInBackground（字符串…字符串）{
试一试{
字符串url=”http://172.17.57.132/post_songs";
URL obj=新URL（URL）；
HttpURLConnection con=（HttpURLConnection）obj.openConnection（）；
//添加reuqest标题
con.setRequestMethod（“POST”）；
字符串urlParameters=“content=”；
//发送邮寄请求
con.设置输出（真）；
DataOutputStream wr=新的DataOutputStream（con.getOutputStream（））；
writeBytes（URL参数）；
wr.flush（）；
wr.close（）；
int responseCode=con.getResponseCode（）；
Log.v（“HTTPDelete_Check3”，“Get returned:+responseCode”）；
BufferedReader in=新的BufferedReader(
新的InputStreamReader（con.getInputStream（））；
字符串输入线；
StringBuffer响应=新的StringBuffer（）；
而（（inputLine=in.readLine（））！=null）{
追加（inputLine）；
}
in.close（）；
//打印结果
}捕获（java.io.IOException-ex）{
}
返回null；
}
@凌驾
受保护的void onPostExecute（void v）{
}
}

我解决了这个问题。下面是解决方案

获取mp3文件并存储在inputstream中的部分：

if(!DocumentsContract.isDocumentUri(this, data.getData()))
    throw new RuntimeException("Not a documentsContract document");

try {
    InputStream is = getContentResolver().openInputStream(data.getData());

    new Main4Activity.httpAsyncTask417().execute();
} catch (FileNotFoundException e1) {
    e1.printStackTrace();
} catch (IOException e1) {
    e1.printStackTrace();
}

    //if(!DocumentsContract.isDocumentUri(this, data.getData()))
                    //    throw new RuntimeException("Not a documentsContract document");

                    try {
                        is = getContentResolver().openInputStream(data.getData());
                        uri=data.getData();
                        file_name=getFileName(uri);
                        new Main4Activity.httpAsyncTask417().execute();
                    } catch (FileNotFoundException e1) {
                        e1.printStackTrace();
                    } catch (IOException e1) {
                        e1.printStackTrace();
                    }

发送POST请求的部分：

public class httpAsyncTask417 extends AsyncTask<String, Void, Void> {

    @Override
    protected Void doInBackground(String... strings) {

        try {
            String url="http://172.17.57.132/post_songs";
            URL obj=new URL(url);
            HttpURLConnection con = (HttpURLConnection) obj.openConnection();

            //add reuqest header
            con.setRequestMethod("POST");

            String urlParameters = "content=";

            // Send post request
            con.setDoOutput(true);
            DataOutputStream wr = new DataOutputStream(con.getOutputStream());
            wr.writeBytes(urlParameters);
            wr.flush();
            wr.close();

            int responseCode = con.getResponseCode();
            Log.v("HTTPDelete_Check3", "Get returned: " + responseCode);

            BufferedReader in = new BufferedReader(
                    new InputStreamReader(con.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            //print result

        }catch(java.io.IOException ex) {

        }

        return null;
    }

    @Override
    protected void onPostExecute(Void v) {

    }
}

    try {
            String url="http://172.17.59.97/post_songs?title="+file_name;
            URL obj=new URL(url);
            HttpURLConnection con = (HttpURLConnection) obj.openConnection();

            //add reuqest header
            con.setRequestMethod("POST");

            // Send post request
            con.setDoOutput(true);
            DataOutputStream wr = new DataOutputStream(con.getOutputStream());
            /*BufferedReader r = new BufferedReader(new InputStreamReader(is));
            String line;
            while ((line = r.readLine()) != null) {
                wr.writeBytes(line+'\n');
            }*/
            //wr.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + uri.toString() +"\"" + "\r\n");

            byte []buffer = new byte[4096];
            int read = 0;

            while ( (read = is.read(buffer)) != -1 ) {
                wr.write(buffer, 0, read);
            }
            wr.flush();
            wr.close();

            int responseCode = con.getResponseCode();
            Log.v("HTTPDelete_Check3", "Get returned: " + responseCode);

            BufferedReader in = new BufferedReader(
                    new InputStreamReader(con.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            //print result

        }catch(java.io.IOException ex) {

        }