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);
