在Android中使用JavaMail API发送电子邮件而不使用邮件应用程序
使用本教程，我将代码加载到一个示例android项目中，并导入了库。更改了行中的参数：在Android中使用JavaMail API发送电子邮件而不使用邮件应用程序,android,email,Android,Email,使用本教程，我将代码加载到一个示例android项目中，并导入了库。更改了行中的参数： send.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub try { GMailSender sender = new GMailSend
send.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
try {
GMailSender sender = new GMailSender("sender@gmail.com", "sender_password");
sender.sendMail("This is Subject", "This is Body", "sender@gmail.com", "recipient@gmail.com");
} catch (Exception e) {
Log.e("SendMail", e.getMessage(), e);
}
}
});
我还将INTERNET权限添加到清单中。如果您想改用mailgun，可以这样做：
public void sendEmailInBackground(final String subject, final String body, final String... toAddress) {
AsyncTask task = new AsyncTask() {
@Override
protected Object doInBackground(Object[] objects) {
String hostname = "smpt.mailgun.org";
int port = 25;
String login = "login";
String password = "password";
String from = "from@example.com";
AuthenticatingSMTPClient client = null;
try {
client = new AuthenticatingSMTPClient();
// optionally set a timeout to have a faster feedback on errors
client.setDefaultTimeout(10 * 1000);
// you connect to the SMTP server
client.connect(hostname, port);
// you say helo and you specify the host you are connecting from, could be anything
client.ehlo("localhost");
// if your host accepts STARTTLS, we're good everything will be encrypted, otherwise we're done here
if (client.execTLS()) {
client.auth(AuthenticatingSMTPClient.AUTH_METHOD.LOGIN, login, password);
checkReply(client);
client.setSender(from);
checkReply(client);
String address = "";
if (toAddress != null) {
for (String to : toAddress) {
if(to != null && to.length() > 0) {
client.addRecipient(to);
if (address.length() == 0) {
address += ",";
}
address += to;
}
}
}
if(address.length() == 0){
logger.warning("No address specified for mail message");
return null;
}
checkReply(client);
Writer writer = client.sendMessageData();
if (writer != null) {
SimpleSMTPHeader header = new SimpleSMTPHeader(from, address, subject);
writer.write(header.toString());
writer.write(body);
writer.close();
if (!client.completePendingCommand()) {// failure
throw new IOException("Failure to send the email " + client.getReply() + client.getReplyString());
}
} else {
throw new IOException("Failure to send the email " + client.getReply() + client.getReplyString());
}
} else {
throw new IOException("STARTTLS was not accepted " + client.getReply() + client.getReplyString());
}
} catch (IOException | NoSuchAlgorithmException | InvalidKeyException | InvalidKeySpecException e) {
logger.severe("Error sending email",e);
} finally {
if (client != null) {
try {
client.logout();
client.disconnect();
} catch (Exception e) {
logger.warning("Error closing email client: " + e.getMessage());
}
}
}
return null;
}
};
task.execute();
}
private static void checkReply(SMTPClient sc) throws IOException {
if (SMTPReply.isNegativeTransient(sc.getReplyCode())) {
throw new IOException("Transient SMTP error " + sc.getReplyString());
} else if (SMTPReply.isNegativePermanent(sc.getReplyCode())) {
throw new IOException("Permanent SMTP error " + sc.getReplyString());
}
}
如果你想改用邮枪，你可以这样做：
public void sendEmailInBackground(final String subject, final String body, final String... toAddress) {
AsyncTask task = new AsyncTask() {
@Override
protected Object doInBackground(Object[] objects) {
String hostname = "smpt.mailgun.org";
int port = 25;
String login = "login";
String password = "password";
String from = "from@example.com";
AuthenticatingSMTPClient client = null;
try {
client = new AuthenticatingSMTPClient();
// optionally set a timeout to have a faster feedback on errors
client.setDefaultTimeout(10 * 1000);
// you connect to the SMTP server
client.connect(hostname, port);
// you say helo and you specify the host you are connecting from, could be anything
client.ehlo("localhost");
// if your host accepts STARTTLS, we're good everything will be encrypted, otherwise we're done here
if (client.execTLS()) {
client.auth(AuthenticatingSMTPClient.AUTH_METHOD.LOGIN, login, password);
checkReply(client);
client.setSender(from);
checkReply(client);
String address = "";
if (toAddress != null) {
for (String to : toAddress) {
if(to != null && to.length() > 0) {
client.addRecipient(to);
if (address.length() == 0) {
address += ",";
}
address += to;
}
}
}
if(address.length() == 0){
logger.warning("No address specified for mail message");
return null;
}
checkReply(client);
Writer writer = client.sendMessageData();
if (writer != null) {
SimpleSMTPHeader header = new SimpleSMTPHeader(from, address, subject);
writer.write(header.toString());
writer.write(body);
writer.close();
if (!client.completePendingCommand()) {// failure
throw new IOException("Failure to send the email " + client.getReply() + client.getReplyString());
}
} else {
throw new IOException("Failure to send the email " + client.getReply() + client.getReplyString());
}
} else {
throw new IOException("STARTTLS was not accepted " + client.getReply() + client.getReplyString());
}
} catch (IOException | NoSuchAlgorithmException | InvalidKeyException | InvalidKeySpecException e) {
logger.severe("Error sending email",e);
} finally {
if (client != null) {
try {
client.logout();
client.disconnect();
} catch (Exception e) {
logger.warning("Error closing email client: " + e.getMessage());
}
}
}
return null;
}
};
task.execute();
}
private static void checkReply(SMTPClient sc) throws IOException {
if (SMTPReply.isNegativeTransient(sc.getReplyCode())) {
throw new IOException("Transient SMTP error " + sc.getReplyString());
} else if (SMTPReply.isNegativePermanent(sc.getReplyCode())) {
throw new IOException("Permanent SMTP error " + sc.getReplyString());
}
}
任何受过培训的人都可以从你的APK获得硬编码密码。我知道，我会及时处理。任何受过培训的人都可以从你的APK获得硬编码密码。我知道，我会及时处理。