Android编程 – 发送邮件

我在 Android中使用以下代码发送邮件：

Intent emailIntent = new Intent(Intent.ACTION_SEND);
 emailIntent.setType("text/html");
 emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,sendTo );
 
 emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,"test" );
 emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,"msg" );

当编译和运行代码时,它会询问我选择“GMail”,“BlueTooth”等应用程序的选项.但我希望在没有用户干预的情况下发送邮件.即使通过彩信发送也会对我有好处.有人可以建议我怎么做吗？

解决方法

您需要在项目中包含java邮件库和依赖项,然后编写一个类似下面的帮助程序类.

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 {
  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);
 }
 
 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");
  }
 }
}

JSSEProvider类

@SuppressWarnings("serial")
public final class JSSEProvider extends Provider {
 public JSSEProvider() {
  super("HarmonyJSSE",1.0,"Harmony JSSE Provider");
  AccessController.doPrivileged(new java.security.PrivilegedAction() {
   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;
   }
  });
 }
}

然后发送电子邮件就像这样简单

GMailSender sender = new GMailSender("username","password");
sender.sendMail("subject",body,"sender",recipients);

Android编程 – 发送邮件

解决方法

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