我有2个类邮件和mainactivity以及1个包含按钮的xml文件，我想要的是当我点击该按钮时，应用程序会自动发送电子邮件到我在我的代码中写的电子邮件地址，我试过这段代码：
邮件类：
package com.example.emailtest;
import java.util.Date;
import java.util.Properties;
import javax.activation.CommandMap;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.activation.MailcapCommandMap;
import javax.mail.BodyPart;
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;
public class Mail extends javax.mail.Authenticator {
private String _user;
private String _pass;
private String[] _to ;
private String _from;
private String _port;
private String _sport;
private String _host;
private String _subject;
private String _body;
private boolean _auth;
private boolean _debuggable;
private Multipart _multipart;
public Mail() {
_host = "smtp.gmail.com"; // default smtp server
_port = "465"; // default smtp port
_sport = "465"; // default socketfactory port
_user = "lama chan"; // username
_pass = **********"; // password
_from = "lamachanz@gmail.com"; // email sent from
_to = new String[] {"lamachanz@gmail.com"};
_subject = "hi"; // email subject
_body = "test"; // email body
_debuggable = false; // debug mode on or off - default off
_auth = true; // smtp authentication - default on
_multipart = new MimeMultipart();
// There is something wrong with MailCap, javamail can not find a handler for the multipart/mixed part, so this bit needs to be added.
MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");
mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
CommandMap.setDefaultCommandMap(mc);
}
public Mail(String user, String pass) {
_user = user;
_pass = pass;
}
public boolean send() throws Exception {
Properties props = _setProperties();
if(!_user.equals("") && !_pass.equals("") && _to.length > 0 && !_from.equals("") && !_subject.equals("") && !_body.equals("")) {
Session session = Session.getInstance(props, this);
MimeMessage msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(_from));
InternetAddress[] addressTo = new InternetAddress[_to.length];
for (int i = 0; i < _to.length; i++) {
addressTo[i] = new InternetAddress(_to[i]);
}
msg.setRecipients(MimeMessage.RecipientType.TO, addressTo);
msg.setSubject(_subject);
msg.setSentDate(new Date());
// setup message body
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setText(_body);
_multipart.addBodyPart(messageBodyPart);
// adding attachment
addAttachment("filename");//replace with file name u need
// Put parts in message
msg.setContent(_multipart);
// send email
Transport transport = session.getTransport("smtps");
transport.connect(_host, 465,_user, _pass);
Transport.send(msg);
return true;
} else {
return false;
}
}
public void addAttachment(String filename) throws Exception {
BodyPart messageBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(filename);
_multipart.addBodyPart(messageBodyPart);
}
@Override
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(_user, _pass);
}
private Properties _setProperties() {
Properties props = new Properties();
props.put("mail.smtp.host", _host);
if(_debuggable) {
props.put("mail.debug", "true");
}
if(_auth) {
props.put("mail.smtp.auth", "true");
}
props.put("mail.smtp.port", _port);
props.put("mail.smtp.socketFactory.port", _sport);
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
props.put("mail.smtp.starttls.enable", "true");
return props;
}
// the getters and setters
public String getBody() {
return _body;
}
public void setBody(String _body) {
this._body = _body;
}
// more of the getters and setters É..
}
我的主要活动类是：
package com.example.emailtest;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity{
public Button bsend;
public Mail m;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bsend=(Button) findViewById(R.id.button1);
bsend.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Mail mail = new Mail();
try {
mail.send();
} catch (Exception e) {
e.printStackTrace();
}}
});
}
@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;
}
}
但它不起作用！当我点击按钮时它会崩溃！
这是我在logcat中得到的：
12-13 06:59:49.961: W/dalvikvm(3207): Unable to resolve superclass of Lcom/example/emailtest/Mail; (823)
12-13 06:59:49.961: W/dalvikvm(3207): Link of class 'Lcom/example/emailtest/Mail;' failed
12-13 06:59:49.961: E/dalvikvm(3207): Could not find class 'com.example.emailtest.Mail', referenced from method com.example.emailtest.MainActivity$1.onClick
12-13 06:59:49.971: W/dalvikvm(3207): VFY: unable to resolve new-instance 711 (Lcom/example/emailtest/Mail;) in Lcom/example/emailtest/MainActivity$1;
12-13 06:59:49.971: D/dalvikvm(3207): VFY: replacing opcode 0x22 at 0x0000
12-13 06:59:49.981: W/dalvikvm(3207): Unable to resolve superclass of Lcom/example/emailtest/Mail; (823)
12-13 06:59:49.981: W/dalvikvm(3207): Link of class 'Lcom/example/emailtest/Mail;' failed
12-13 06:59:49.981: D/dalvikvm(3207): DexOpt: unable to opt direct call 0x13b3 at 0x02 in Lcom/example/emailtest/MainActivity$1;.onClick
12-13 06:59:50.421: D/gralloc_goldfish(3207): Emulator without GPU emulation detected.
12-13 07:01:37.911: D/AndroidRuntime(3207): Shutting down VM
12-13 07:01:37.911: W/dalvikvm(3207): threadid=1: thread exiting with uncaught exception (group=0xb4acab90)
12-13 07:01:37.951: E/AndroidRuntime(3207): FATAL EXCEPTION: main
12-13 07:01:37.951: E/AndroidRuntime(3207): Process: com.example.emailtest, PID: 3207
12-13 07:01:37.951: E/AndroidRuntime(3207): java.lang.NoClassDefFoundError: com.example.emailtest.Mail
12-13 07:01:37.951: E/AndroidRuntime(3207): at com.example.emailtest.MainActivity$1.onClick(MainActivity.java:24)
12-13 07:01:37.951: E/AndroidRuntime(3207): at android.view.View.performClick(View.java:4424)
12-13 07:01:37.951: E/AndroidRuntime(3207): at android.view.View$PerformClick.run(View.java:18383)
12-13 07:01:37.951: E/AndroidRuntime(3207): at android.os.Handler.handleCallback(Handler.java:733)
12-13 07:01:37.951: E/AndroidRuntime(3207): at android.os.Handler.dispatchMessage(Handler.java:95)
12-13 07:01:37.951: E/AndroidRuntime(3207): at android.os.Looper.loop(Looper.java:137)
12-13 07:01:37.951: E/AndroidRuntime(3207): at android.app.ActivityThread.main(ActivityThread.java:4998)
12-13 07:01:37.951: E/AndroidRuntime(3207): at java.lang.reflect.Method.invokeNative(Native Method)
12-13 07:01:37.951: E/AndroidRuntime(3207): at java.lang.reflect.Method.invoke(Method.java:515)
12-13 07:01:37.951: E/AndroidRuntime(3207): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
12-13 07:01:37.951: E/AndroidRuntime(3207): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
12-13 07:01:37.951: E/AndroidRuntime(3207): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
此类javax.mail.Authenticator属于java SE。
可能有一些超级类，android不支持或缺少。
首先验证。
检查此答案