我是android新手。我正在使用电子邮件发送选项开发新的应用程序。要发送邮件,我使用了gmail配置主机“smtp.gmail.com”,端口465,SSL为true。要发送电子邮件,我有apache commons API。 OnTouch
事件邮件发送方法将调用。每当触摸按钮显示以下错误时,
Error : Could not find class 'javax.naming.InitialContext', referenced from method org.apache.commons.mail.Email.setMailSessionFromJNDI Warning: VFY: unable to resolve new-instance 955 (Ljavax/naming/InitialContext;) in Lorg/apache/commons/mail/Email; Warning : org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.gmail.com:465
我在清单文件中添加了uses-permission android:name =“android.permission.INTERNET”。
我可以在android中使用所有java文件吗?
我的电子邮件代码作为独立的java程序正确执行。
答案 0 :(得分:0)
以下是我在应用中所做的一个示例。我有一个应用程序,它有自己的电子邮件帐户,当用户填写表单并按下提交按钮时,会向用户发送电子邮件。
重要的是确保您的应用中引用了 libSMTP.jar 文件。我正在使用此库来获取以下代码。以下是使用的代码,从中获取您想要的代码,希望这很有用:
需要进口:
import org.apache.commons.net.smtp.SMTPClient;
import org.apache.commons.net.smtp.SMTPReply;
import org.apache.commons.net.smtp.SimpleSMTPHeader;
提交按钮以发送电子邮件的请求
submit.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
//-- Submit saves data to sqlite db, but removed that portion for this demo...
//-- Executes an new task to send an automated email to user when they fill out a form...
new sendEmailTask().execute();
}
}
});
要在单独的主题上执行的电子邮件任务:
private class sendEmailTask extends AsyncTask<Void, Void, Void>
{
@Override
protected void onPostExecute(Void result)
{
}
@Override
protected void onPreExecute()
{
}
@SuppressLint("ParserError")
@Override
protected Void doInBackground(Void... params)
{
try {
//--Note the send format is as follows: send(from, to, subject line, body message)
send("myAppName@gmail.com", "emailToSendTo@gmail.com", "Form Submitted", "You submitted the form.");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
正在使用的发送功能:
public void send(String from, String to, String subject, String text) throws IOException
{
SMTPClient client = new SMTPClient("UTF-8");
client.setDefaultTimeout(60 * 1000);
client.setRequireStartTLS(true); // requires STARTTLS
//client.setUseStartTLS(true); // tries STARTTLS, but falls back if not supported
client.setUseAuth(true); // use SMTP AUTH
//client.setAuthMechanisms(authMechanisms); // sets AUTH mechanisms e.g. LOGIN
client.connect("smtp.gmail.com", 587);
checkReply(client);
//--Note the following format is as follows: client.login("localhost", (...your email account being used to send email from...), (...your email accounts password ...));
client.login("localhost", "myAppName@gmail.com", "...myAppName email account password...");
checkReply(client);
client.setSender(from);
checkReply(client);
client.addRecipient(to);
checkReply(client);
Writer writer = client.sendMessageData();
if (writer != null)
{
SimpleSMTPHeader header = new SimpleSMTPHeader(from, to, subject);
writer.write(header.toString());
writer.write(text);
writer.close();
client.completePendingCommand();
checkReply(client);
}
client.logout();
client.disconnect();
}
检查正在使用的回复功能:
private void checkReply(SMTPClient sc) throws IOException
{
if (SMTPReply.isNegativeTransient(sc.getReplyCode()))
{
sc.disconnect();
throw new IOException("Transient SMTP error " + sc.getReplyCode());
}
else if (SMTPReply.isNegativePermanent(sc.getReplyCode()))
{
sc.disconnect();
throw new IOException("Permanent SMTP error " + sc.getReplyCode());
}
}
答案 1 :(得分:0)
从Apache Commons Net 3.3,您可以将jar放入类路径并开始使用AuthenticationSMTPClient:http://blog.dahanne.net/2013/06/17/sending-a-mail-in-java-and-android-with-apache-commons-net/