Android(安卓)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();        }    }}

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