HttpClient的GET和POST请求

public class MainActivity extends AppCompatActivity {    private final String GETURL = "http://v.juhe.cn/toutiao/index?type=top&&key=22a108244dbb8d1f49967cd74a0c144d";    private String POSTURL = "http://v.juhe.cn/toutiao/index";    private String response_msg = "";    private List<Bean2> list;    private MyAdapter ma;    private ListView lv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        lv = (ListView) findViewById(R.id.lv);        list = new ArrayList<Bean2>();    }    public void get(View v) {        new Thread(new Runnable() {            @Override            public void run() {                String news = getNews();                Jiexi(news);            }        }).start();    }    public void post(View v) {        new Thread(new Runnable() {            @Override            public void run() {                postNews("top", "22a108244dbb8d1f49967cd74a0c144d");            }        }).start();    }    public String getNews() {        StringBuffer result = new StringBuffer();        //创建HttpClient对象 打开一个浏览器        HttpClient httpclient = new DefaultHttpClient();        //创建Http对象，get请求的对象， 传入url        HttpGet httpGet = new HttpGet(GETURL);        try {            HttpResponse httpResponse = httpclient.execute(httpGet);            //根据响应行，拿到响应码            int responseCode = httpResponse.getStatusLine().getStatusCode();            response_msg = httpResponse.getStatusLine().getReasonPhrase();            if (200 == responseCode) {                //得到返回的实体对象                HttpEntity entity = httpResponse.getEntity();                InputStream in = entity.getContent();                BufferedReader reader = new BufferedReader(new InputStreamReader(in));                String line = null;                while ((line = reader.readLine()) != null) {                    result.append(line);                }            }        } catch (Exception e) {            e.printStackTrace();        }        return result.toString();    }    /**     * post请求     */    public String postNews(String type, String key) {        String result = null;        HttpClient client = new DefaultHttpClient();        HttpPost httpPost = new HttpPost(POSTURL);        //封装传递参数的集合        List<NameValuePair> parameters = new ArrayList<>();        //添加要传递的参数        parameters.add(new BasicNameValuePair("type", type));        parameters.add(new BasicNameValuePair("key", key));        //封装为实体对象        try {            UrlEncodedFormEntity encodedFormEntity = new UrlEncodedFormEntity(parameters, "utf-8");            //把实体对象存入到HttpPost对象中            httpPost.setEntity(encodedFormEntity);            //调用第一步中创建好的实例execute方法来执行第二步中创建好的method实例            HttpResponse response = client.execute(httpPost);            //根据响应行， 拿到响应码            int responseCode = response.getStatusLine().getStatusCode();            response_msg = response.getStatusLine().getReasonPhrase();            if (200 == responseCode) {                HttpEntity entity = response.getEntity();                InputStream in = entity.getContent();                ByteArrayOutputStream byteOut = new ByteArrayOutputStream();                int length = 0;                byte[] buffer = new byte[1024];                while ((length = in.read(buffer)) != -1) {                    byteOut.write(buffer, 0, length);                }                result = byteOut.toString();            }        } catch (Exception e) {            e.printStackTrace();        }        return result;    }    private void Jiexi(String news) {        try {            JSONObject obj = new JSONObject(news);            JSONObject result = obj.getJSONObject("result");            JSONArray data = result.getJSONArray("data");            if(data!=null&&data.length()>0){                for (int i = 0; i < data.length(); i++) {                    JSONObject js = data.getJSONObject(i);                    Bean2 b = new Bean2() ;                    b.title = js.getString("title");                    b.date = js.getString("date");                    b.category = js.getString("category");                    b.author_name = js.getString("author_name");                    list.add(b);                }            }            if(list !=null){               runOnUiThread(new Runnable() {                   @Override                   public void run() {                       setDate();                   }               });            }        } catch (JSONException e) {            e.printStackTrace();        }    }    private void setDate() {       ma=new MyAdapter(MainActivity.this,list);        lv.setAdapter(ma);    }