private EditText et;

    private TextView tv;

    HttpClient client;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        et=(EditText) findViewById(R.id.et);

        tv=(TextView) findViewById(R.id.tv);

        client=new DefaultHttpClient();

        findViewById(R.id.btn).setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {

                readNet("http://localhost:8080/get",et.getText()+"");

            }

        });

    }

    public void readNet(String url,String name){

        new AsyncTask<String, Void, String>() {

            @Override

            protected String doInBackground(String... params) {

                String urlString=params[0];

                HttpPost post=new HttpPost(urlString);

                try {

                    HttpResponse response=client.execute(post);

                    List<BasicNameValuePair> list=new ArrayList<BasicNameValuePair>();

                    list.add(new BasicNameValuePair("name", params[1]));

                    post.setEntity(new UrlEncodedFormEntity(list));

                    String v=EntityUtils.toString( response.getEntity());

                    return v;

                } catch (Exception e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

                return null;

            }

            @Override

            protected void onPostExecute(String result) {

                tv.setText(result);

            }

        }.execute(url,name);

    }