java - 如何在 AsyncTask 或 RequestHandler.java 中添加基本身份验证 java android？

Question

我的问题是如何添加基本身份验证Java Android AsyncTask？一些开发人员表示需要在 RequestHandler.java 或 doInBackground AsyncTask 函数中声明。下面是我的代码:

private void loginTask(String _username, String _password){
        final String username = _username;
        final String password = _password;

        class LoginTask extends AsyncTask<Void,Void,String> {
            ProgressDialog loading;
            @Override
            protected void onPreExecute() {
                super.onPreExecute();
                loading = ProgressDialog.show(LoginActivity.this,"Fetching...","Wait...",false,false);
            }

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                loading.dismiss();
            }

            @Override
            protected String doInBackground(Void... params) {
                RequestHandler rh = new RequestHandler();
                String s = rh.sendGetRequest(App.URL_AUTHENTICATION);
                Toast.makeText(LoginActivity.this, s.toString(), Toast.LENGTH_SHORT).show();
                return s;
            }
        }
        LoginTask gt = new LoginTask();
        gt.execute();
    }

RequestHandler类:https://github.com/IntellijSys/AndroidToDoList/blob/master/app/src/main/java/my/intellij/androidtodolist/RequestHandler.java

Answer 1

试试这个

 RequestHandler rh = new RequestHandler();
            // your basic auth username and password
            rh.setBasicAuth("username","password");
String s = rh.sendGetRequest(App.URL_AUTHENTICATION);

具有基本身份验证的RequestHandler类

import android.util.Base64;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

import javax.net.ssl.HttpsURLConnection;

/**
 * Created by ZERO on 16/08/2016.
 */
public class RequestHandler {

    private String username;
    private String password;

    //Method to send httpPostRequest
    //This method is taking two arguments
    //First argument is the URL of the script to which we will send the request
    //Other is an HashMap with name value pairs containing the data to be send with the request
    public String sendPostRequest(String requestURL,
                                  HashMap<String, String> postDataParams) {
        URL url;

        //StringBuilder object to store the message retrieved from the server
        StringBuilder sb = new StringBuilder();
        try {
            //Initializing Url
            url = new URL(requestURL);

            //Creating an httmlurl connection
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
//set Basic auth
            processBasicAuth(conn);

            //Configuring connection properties
            conn.setReadTimeout(15000);
            conn.setConnectTimeout(15000);
            conn.setRequestMethod("POST");
            conn.setDoInput(true);
            conn.setDoOutput(true);

            //Creating an output stream
            OutputStream os = conn.getOutputStream();

            //Writing parameters to the request
            //We are using a method getPostDataString which is defined below
            BufferedWriter writer = new BufferedWriter(
                    new OutputStreamWriter(os, "UTF-8"));
            writer.write(getPostDataString(postDataParams));

            writer.flush();
            writer.close();
            os.close();
            int responseCode = conn.getResponseCode();

            if (responseCode == HttpsURLConnection.HTTP_OK) {

                BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                sb = new StringBuilder();
                String response;
                //Reading server response
                while ((response = br.readLine()) != null) {
                    sb.append(response);
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return sb.toString();
    }

    private void processBasicAuth(HttpURLConnection conn) {
        if (username != null && password != null) {
            try {
                String userPassword = username + ":" + password;
                byte[] data = userPassword.getBytes("UTF-8");
                String base64 = Base64.encodeToString(data, Base64.DEFAULT);
                conn.setRequestProperty("Authorization", "Basic " + base64);
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
        }
    }

    public String sendGetRequest(String requestURL) {
        StringBuilder sb = new StringBuilder();
        try {
            URL url = new URL(requestURL);
            HttpURLConnection con = (HttpURLConnection) url.openConnection();
            //set Basic auth
            processBasicAuth(con);
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));

            String s;
            while ((s = bufferedReader.readLine()) != null) {
                sb.append(s + "\n");
            }
        } catch (Exception e) {
        }
        return sb.toString();
    }

    public String sendGetRequestParam(String requestURL, String id) {
        StringBuilder sb = new StringBuilder();
        try {
            URL url = new URL(requestURL + id);
            HttpURLConnection con = (HttpURLConnection) url.openConnection();
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));

            String s;
            while ((s = bufferedReader.readLine()) != null) {
                sb.append(s + "\n");
            }
        } catch (Exception e) {
        }
        return sb.toString();
    }

    private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException {
        StringBuilder result = new StringBuilder();
        boolean first = true;
        for (Map.Entry<String, String> entry : params.entrySet()) {
            if (first)
                first = false;
            else
                result.append("&");

            result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
            result.append("=");
            result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
        }

        return result.toString();
    }

    public void setBasicAuth(String username, String password) {
        this.username = username;
        this.password = password;
    }
}