如何使用JavaMail API在Android中发送邮件?

时间:2013-05-07 14:33:06

标签: java android javamail

如何从Android发送邮件?相同的代码在Java项目中正常工作,但在Android中却没有。

1)GmailSender.java

       import javax.activation.DataHandler;
       import javax.activation.DataSource;
       import javax.mail.Message;
       import javax.mail.PasswordAuthentication;
       import javax.mail.Session;
       import javax.mail.Transport;
       import javax.mail.internet.InternetAddress;
       import javax.mail.internet.MimeMessage;
       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;

       static {
       Security.addProvider(new com.idocz.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");
       }
       }
       }

2)JSSEProvider.java

        import java.security.AccessController;
        import java.security.Provider;

        public final class JSSEProvider extends Provider {
    private static final long serialVersionUID = 1L;
    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 sender = new GMailSender("xxx@gmail.com", "xxxxxx");
     sender.sendMail("Test", "Test mail",  "xxx@gmail.com", "xxx@gmail.com");     

GMailSender类调用活动类,但是我收到了错误。

     05-07 19:59:42.729: E/dalvikvm(9567): Could not find class 'com.test.GMailSender', referenced from method com.test.sendmail$2.onClick

     05-07 19:59:43.739: E/AndroidRuntime(9567): FATAL EXCEPTION: main

    05-07 19:59:43.739: E/AndroidRuntime(9567): java.lang.NoClassDefFoundError: com.test.GMailSender

1 个答案:

答案 0 :(得分:0)

首先,您必须在libs文件夹 *中添加3个jar * 文件,这些文件位于

之下
  1. activation.jar
  2. additionnal.jar
  3. mail.jar
  4. 在您的应用程序中添加此代码后。

    其次,您必须在 AndroidManifest.xml 文件

    中添加权限
    <uses-permission android:name="android.permission.INTERNET"/>
    

    MainActivity.java

    package com.example.mailsenderactivity;
    
    import android.os.Bundle;
    import android.app.Activity;
    import android.util.Log;
    import android.view.Menu;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.Toast;
    
    public class MainActivity extends Activity {
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    
        final Button send = (Button) this.findViewById(R.id.send);
        send.setOnClickListener(new OnClickListener() {
    
            public void onClick(View v) {
                try {
                    GMailSender sender = new GMailSender("<U R GMAIL ADDRESS>",
                            "<GMAIL PASSWORD>");
                    sender.sendMail("This is Subject", "This is Body",
                            "<U R GMAIL (SENDER)>", "<RECIPIENT(RECEIVER) EMAIL ADDRESS>");
                    Toast.makeText(MainActivity.this, "Mail Send Successfully.....", Toast.LENGTH_LONG).show();
                } catch (Exception e) {
                    Log.e("SendMail", e.getMessage(), e);
                }
    
            }
        });
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
    }
    

    GMailSender.java

    package com.example.mailsenderactivity;
    
    import javax.activation.DataHandler;   
    import javax.activation.DataSource;   
    import javax.mail.Message;   
    import javax.mail.PasswordAuthentication;   
    import javax.mail.Session;   
    import javax.mail.Transport;   
    import javax.mail.internet.InternetAddress;   
    import javax.mail.internet.MimeMessage;   
    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;   
    
    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 {   
        try{
        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);   
        }catch(Exception e){
            e.printStackTrace();
        }
    }   
    
    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.java

    package com.example.mailsenderactivity;
    
    import java.security.AccessController;
    import java.security.Provider;
    
    public class JSSEProvider extends Provider {
    
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    
    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;
            }
        });
      }
    }