我正在开发一个应用程序，我必须从应用程序发送邮件。邮件的正文和收件人不应是可编辑的。所以我使用这个link逐步配置了gmail。
现在应用程序的需要是，FROM 用户名和密码由用户给出。它可以是任何类型：
abc@gmail.com,
abc@rediffmail.com
abc@yahoomail.com
无论用户输入什么用户名和密码，都应该发送电子邮件。我搜索了一下，发现要从 yahoo id 应用程序发送邮件，应该在 yahoo smtp 服务器上配置。
但是如果用户输入其他邮件 ID 怎么办。是否有应用程序可以发送邮件的通用方法？为此，我必须执行哪些步骤。
【问题讨论】：
如果你有 gmail 这很有用 首先从here下载这3个库 （邮件/激活/附加） 将它们添加到您的项目（将它们复制到项目/右键单击/添加到构建路径）
JSSEProvider 类：
package com.emailsender;
import java.security.AccessController;
import java.security.Provider;
public final class JSSEProvider extends Provider {
public JSSEProvider() {
super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
AccessController
.doPrivileged(new java.security.PrivilegedAction<Void>() {
public Void run() {
put("SSLContext.TLS",
"org.apache.harmony.xnet.provider.jsse.SSLContextImpl");
put("Alg.Alias.SSLContext.TLSv1", "TLS");
put("KeyManagerFactory.X509",
"org.apache.harmony.xnet.provider.jsse.KeyManagerFactoryImpl");
put("TrustManagerFactory.X509",
"org.apache.harmony.xnet.provider.jsse.TrustManagerFactoryImpl");
return null;
}
});
}
}
GmailSender 类：
package com.emailsender;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
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;
private Multipart _multipart = new MimeMultipart();
static {
Security.addProvider(new shooreshi.fayyaz.ghariebartar.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(), "music"));
message.setSender(new InternetAddress(sender));
message.setSubject(subject);
message.setDataHandler(handler);
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setText(body);
_multipart.addBodyPart(messageBodyPart);
// Put parts in message
message.setContent(_multipart);
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 void addAttachment(String filename) throws Exception {
BodyPart messageBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName("music.mp3");
_multipart.addBodyPart(messageBodyPart);
}
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");
}
}
}
发送代码：
new Thread(new Runnable() {
public void run() {
try {
GMailSender sender = new GMailSender(
"yourgmail@gmail.com",
"yourpassword");
sender.addAttachment(Environment.getExternalStorageDirectory().getPath()+"/image.jpg");
sender.sendMail("your text",
"senderemail@gmail.com",
"recieveremail@gmail.com");
} catch (Exception e) {
Toast.makeText(getApplicationContext(),"Error",Toast.LENGTH_LONG).show();
}
}
}).start();
别忘了添加权限！
【讨论】：
这样试试，
address = (EditText) findViewById(R.id.address);
subject = (EditText) findViewById(R.id.subject);
emailbody = (EditText) findViewById(R.id.body);
send = (Button) findViewById(R.id.send);
send.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
sendEmail();
}
});
}
public void sendEmail(){
if(!address.getText().toString().trim().equalsIgnoreCase("")){
final Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.setType("plain/text");
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[]{ address.getText().toString()});
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, subject.getText());
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, emailbody.getText());
sendMailDemo.this.startActivity(Intent.createChooser(emailIntent, "Send mail..."));
}
else{
Toast.makeText(getApplicationContext(), "Please enter an email address..", Toast.LENGTH_LONG).show();
}
【讨论】：