Question

我正在使用Android Studio在Debian Jessie上构建一个Android应用程序。我希望能够实施电子邮件验证系统，当用户注册时，他们将自动收到包含链接的电子邮件。单击该链接会将数据库上的值从false更改为true，以便对用户进行身份验证。

我听说我可以使用JavaMail API来实现这一目标吗？但同时听说我需要在本地主机上运行一个电子邮件服务器来发送电子邮件？

我还没有找到明确的答案。任何帮助将不胜感激。谢谢。

Answer 1

May be I don't know the best answer to this. There are two ways one can do this.

Send verification mail using the Web Services. i.e. Suppose you are using PHP web services to register user. When the user details is successfully stored in the database... you can generate a random code.... send mail to registered email address ... get that code in the response... and store it in preferences to check for validity.. when user enters it.

When the registration is successful.... you can send verification code to user by triggering some dialog or any other way... This is my code. I am using volley for network call.

public class DialogRequestPassword extends Dialog implements android.view.View.OnClickListener {

public Activity c;
private PreferencesManager preferencesManager;
DatabaseHelper db;
private ProgressDialog progressDialog;
EditText request_password;

public DialogRequestPassword(Activity a) {
    super(a);
    this.c = a;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.dialog_request_password);
    setCancelable(false);

    preferencesManager = new PreferencesManager(c);
    db = new DatabaseHelper(c);

    progressDialog = new ProgressDialog(c);
    progressDialog.setCancelable(false);
    progressDialog.setMessage("Getting Information...");

    TextView connectButton = (TextView) findViewById(R.id.connectButton);
    connectButton.setOnClickListener(this);

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

    TextView dialog_text = (TextView) findViewById(R.id.dialog_text);
    dialog_text.setText("Enter your registered email and request the lost password. You will receive steps to recover your password.");

    TextView cancelButton = (TextView) findViewById(R.id.cancelButton);
    cancelButton.setOnClickListener(this);

}

@Override
public void onClick(View v) {

    switch (v.getId()) {
        case R.id.cancelButton:
            dismiss();
            break;

        case R.id.connectButton:
            dismiss();
            // Send mail
            if (request_password.getText().toString().equals("")) {
                request_password.setError("Enter registered Email");
            } else {
                //Redirect user to Login
                if (preferencesManager.getVerificationCode() == null) {
                    getUserData();
                }
            }
            break;

    }
}


/*******************************/
private class SendMailTask extends AsyncTask<String, Void, Void> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        progressDialog.show();
    }

    @Override
    protected void onPostExecute(Void aVoid) {
        super.onPostExecute(aVoid);
        progressDialog.dismiss();
    }

    @Override
    protected Void doInBackground(String... receipt) {
        try {
            GMailSender sender = new GMailSender("ro-reply@gmail.com", "password");
            sender.sendMail("Password Recovery for App title",
                    receipt[1],
                    "user@gmail.com",
                    receipt[0]);
        } catch (Exception e) {
            Log.d("SendMail", e.getMessage(), e);
        }
        return null;
    }
}


private void getUserData() {
    StringRequest jsonAuthenticate = new StringRequest(Request.Method.POST, Config.URL_REQUEST_PASSWORD,
            new Response.Listener<String>() {

                @Override
                public void onResponse(String response) {
                    if (Constants.DEBUG_MODE_ON)
                        Log.d(Constants.DEBUG_LOG, "Response for Request Paswword: " + response);

                    try {
                        JSONObject result = new JSONObject(response);
                        JSONArray jcode = result.getJSONArray("code");
                        JSONObject jCodeObj = jcode.getJSONObject(0);
                        int code = jCodeObj.getInt("code");

                        if (code == 1) {


                        } else {
                            progressDialog.dismiss();
                            Toast.makeText(c, "No such email is registered.", Toast.LENGTH_SHORT).show();
                        }

                    } catch (Exception e) {
                        progressDialog.dismiss();

                        Log.d(Constants.DEBUG_LOG, "Volley Exception: " + e.getCause() + " -> " + e.toString());

                        e.printStackTrace();
                    }
                }
            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            Toast.makeText(c, "Oh! Something went wrong. Please try again.", Toast.LENGTH_SHORT).show();
            progressDialog.dismiss();
            Log.d(Constants.DEBUG_LOG, "Error Response : " + error.toString() + " MESSAGE: " + error.getMessage() + " CAUSE:" + error.getCause());

        }
    }) {
        @Override
        protected Map<String, String> getParams() {
            Map<String, String> params = new HashMap<String, String>();

            params.put("email", request_password.getText().toString());
            return params;
        }
    };


    jsonAuthenticate.setRetryPolicy(new RetryPolicy() {
        @Override
        public int getCurrentTimeout() {
            return 10000;
        }

        @Override
        public int getCurrentRetryCount() {
            return 2;
        }

        @Override
        public void retry(VolleyError error) throws VolleyError {

        }
    });

    MyApplication.getInstance().addToReqQueue(jsonAuthenticate);
}

}

Note : You will have to use GmaiLSender for this...

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.Security;
import java.util.Properties;

public class GMailSender extends javax.mail.Authenticator {
private String mailhost = "smtp.gmail.com";
private String user;
private String password;
private Session session;

static {
Security.addProvider(new JSSEProvider());
}

public GMailSender(String user, String password) {
this.user = user;
this.password = password;

Properties props = new Properties();
props.setProperty("mail.transport.protocol", "smtp");
props.setProperty("mail.host", mailhost);
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
props.setProperty("mail.smtp.quitwait", "false");

session = Session.getDefaultInstance(props, this);
}

protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password);
}

public synchronized void sendMail(String subject, String body, String sender, String recipients) throws Exception {
try{
MimeMessage message = new MimeMessage(session);
DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain"));
message.setSender(new InternetAddress(sender));
message.setSubject(subject);
message.setDataHandler(handler);
if (recipients.indexOf(',') > 0)
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients));
else
message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients));
Transport.send(message);
}catch(Exception e){

}
}

public class ByteArrayDataSource implements DataSource {
private byte[] data;
private String type;

public ByteArrayDataSource(byte[] data, String type) {
super();
this.data = data;
this.type = type;
}

public ByteArrayDataSource(byte[] data) {
super();
this.data = data;
}

public void setType(String type) {
this.type = type;
}

public String getContentType() {
if (type == null)
return "application/octet-stream";
else
return type;
}

public InputStream getInputStream() throws IOException {
return new ByteArrayInputStream(data);
}

public String getName() {
return "ByteArrayDataSource";
}

public OutputStream getOutputStream() throws IOException {
throw new IOException("Not Supported");
}
}
}

注册Android应用程序后发送验证电子邮件

1 个答案: