Android Get,Post,AsyncHttpClient向服务器提交数据三种方式

上次我们研究了Android端怎样解析web端上传的网络数据，这次我们来一起研究研究Android网络数据之向服务器提交数据的三种方式（get+post+AsyncHttpClient），代码如下：

如下图这是主界面：

activaty_login.xml

LoginActivaty.Java

public class LoginActivity extends AppCompatActivity {

    private EditText et_main_uname;
    private EditText et_main_upass;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        et_main_uname = (EditText) findViewById(R.id.et_main_uname);
        et_main_upass = (EditText) findViewById(R.id.et_main_upass);
    }

    public void loginByGet(View view) {
        String uname = et_main_uname.getText().toString();
        String upass = et_main_upass.getText().toString();

        String path = "http://192.168.253.1:8090/front/getlogin.xhtml";
        //可变数组
        new MyTask().execute(uname, upass, path, "GET");
    }

    public void loginByPost(View view) {
        String uname = et_main_uname.getText().toString();
        String upass = et_main_upass.getText().toString();

        String path = "http://192.168.253.1:8090/front/getlogin.xhtml";
        //可变数组
        new MyTask().execute(uname, upass, path, "POST");
    }

    public void loginByAsyncHttpClient(View view) {
        String uname = et_main_uname.getText().toString();
        String upass = et_main_upass.getText().toString();

        String path = "http://192.168.253.1:8090/front/getlogin.xhtml";


        AsyncHttpClient asyncHttpClient=new AsyncHttpClient();
        RequestParams requestParams=new RequestParams();
        requestParams.put("uname",uname);
        requestParams.put("upwd",upass);
        asyncHttpClient.post(path,requestParams,new TextHttpResponseHandler(){

            @Override
            public void onSuccess(int statusCode, Header[] headers, String responseBody) {
                super.onSuccess(statusCode, headers, responseBody);
                Toast.makeText(LoginActivity.this, responseBody, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onFailure(int statusCode, Header[] headers, String responseBody, Throwable error) {
                super.onFailure(statusCode, headers, responseBody, error);
            }
        });

    }



    class MyTask extends AsyncTask {

        private HttpURLConnection connection;
        private URL url;

        @Override
        protected Object doInBackground(Object[] objects) {

            //获取参数的值
            String uname = objects[0].toString();
            String upass = objects[1].toString();
            String path = objects[2].toString();
            String type = objects[3].toString();

            String str = "uname=" + uname + "&upwd=" + upass;
            try {
                if ("GET".equals(type)) {
                    //用GET方式提交
                    path = path + "?" + str;
                    url = new URL(path);
                    connection = (HttpURLConnection) url.openConnection();
                    connection.setRequestMethod(type);
                } else if ("POST".equals(type)) {
                    //用POST方式提交
                    url = new URL(path);

                    connection = (HttpURLConnection) url.openConnection();
                    connection.setRequestMethod(type);
                    //设置contentType  contentLength
                    connection.setRequestProperty("Content-Length", str.length() + "");
                    connection.setRequestProperty("Content-Type", "text/plain;charset=UTF-8");
                    //设置允许对外输出数据
                    connection.setDoOutput(true);
                    //将用户名和密码提交到服务器
                    connection.getOutputStream().write(str.getBytes());
                }
                connection.setConnectTimeout(5000);
                if (connection.getResponseCode() == 200) {
                    InputStream is = connection.getInputStream();
                    BufferedReader br = new BufferedReader(new InputStreamReader(is));
                    String result = br.readLine();
                    return result;
                }
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(Object o) {
            super.onPostExecute(o);

            String s = (String) o;
            Toast.makeText(LoginActivity.this, s, Toast.LENGTH_SHORT).show();

        }
    }
}