Android – 使用JavaMail和OAuth2发送电子邮件

我正在开发一个基本的电子邮件发件人应用,只向Gmail发送电子邮件.过了一段时间,我想出了Google现在需要使用GoogleAuthUtil API中的getToken()方法进行身份验证的OAuth2的漏洞方案.

我在网上搜索了@L_624_5@mail代码,使用我从API检索的令牌发送电子邮件,我找到了以下我现在使用的代码：

package com.provider;

import java.io.byteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.outputStream;
import java.security.Provider;
import java.security.Security;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.Datasource;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.URLName;
import javax.mail.message;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.Mimemessage;
import javax.mail.util.byteArrayDatasource;

import android.util.Log;

import com.sun.mail.smtp.SMTPTransport;
import com.sun.mail.util.bASE64EncoderStream;

public class GMailOauthSender {
private Session session;

private String mailhost = "smtp.gmail.com";   
privatE int port = 587;
private String user;   
private String password;   



public SMTPTransport connectToSmtp(String host,int port,String userEmail,String oauthToken,Boolean debug) throws Exception {

    Properties props = new Properties();
    props.put("mail.smtp.starttls.enable","true");
    props.put("mail.smtp.starttls.required","true");
    props.put("mail.smtp.sasl.enable","true");
    props.put("mail.smtp.auth","true");
    props.put("mail.imap.auth.login.disable","true");
    props.put("mail.imap.auth.plain.disable","true");
    session = Session.geTinstance(props);
    session.setDebug(debug);


    final URLName unusedUrlName = null;
    SMTPTransport transport = new SMTPTransport(session,unusedUrlName);
    // If the password is non-null,SMTP tries to do AUTH LOGIN.
    final String emptypassword = null;
    transport.connect(host,port,userEmail,emptypassword);

            byte[] response = String.format("user=%s\1auth=Bearer %s\1\1",oauthToken).getBytes();
    response = BASE64EncoderStream.encode(responsE);

    transport.issueCommand("AUTH XOAUTH2 " + new String(responsE),235);

    return transport;
}

public synchronized void sendMail(String subject,String body,String user,String recipients) {
    try {

        SMTPTransport smtpTransport = connectToSmtp("smtp.gmail.com",587,user,oauthToken,truE);

        Mimemessage message = new Mimemessage(session);
        DataHandler handler = new DataHandler(new ByteArrayDatasource(body.getBytes(),"text/plain"));   
                message.setSender(new InternetAddress(user));   
                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));   
        smtpTransport.sendmessage(message,message.getAllRecipients());   


    } catch (Exception E) {
        //Log.d("test",e.getmessage());
    }

}

不幸的是,代码根本不起作用.到目前为止,我已经坚持了三个多星期.有什么建议？

GMailSender gMailSender = new GMailSender();
gMailSender.sendMail("hi","hi",authpreferences.getUser(),authpreferences.getToken(),"somemailid@gmail.com");

<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.USE_CREDENTIALS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />