Java邮件API在Android中无法工作 [英] Java mail API not working in android
本文介绍了Java邮件API在Android中无法工作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
包;
import java.util.Date;
import android.content.Intent;
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;
私人字符串to1，to2，to3，to4，to5; //这里我把我的收件人名称
private String [] _to = {to1，to2，to3，to4，to5};
private String _from;
private String _port;
private String _sport;
private String _host;
private String _subject =HELLO;
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
_debuggable = false; // debug mode on or off - default off
_auth = true; // smtp authentication - $ on
_multipart = new MimeMultipart（）;
// MailCap有问题，javamail无法找到多部分/混合部分的处理程序，因此需要添加该位。
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）{
this（）;
_user = user;
_pass = pass;
}
public boolean send（）throws异常{
属性props = _setProperties（）;
if（！_ user.equals（）&！_pass.equals（）& _to.length> 0& ）&！_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]; （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（））;
//设置消息体
BodyPart messageBodyPart = new MimeBodyPart（）;
messageBodyPart.setText（_body）;
_multipart.addBodyPart（messageBodyPart）;
//将消息放在消息中
msg.setContent（_multipart）;
//发送电子邮件
Transport.send（msg）;
返回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（）{
返回新的PasswordAuthentication（_user，_pass）;
}
私有属性_setProperties（）{
属性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）;
返回道具;
}
// getter和setter
public String getBody（）{
return _body;
}
public void setBody（String _body）{
this._body = _body;
}
//更多的getter和setter ... ..
}
解决方案
您应该发布调用此类的代码（可能是您的活动）。有一些常见的问题可能导致此问题，例如 NetworkOnMainThreadException 。
我根据相同的 javax.mail 代码编写了一些工作的Android邮件代码，它的工作正常。以下是代码：
submitButton.setOnClickListener（new OnClickListener（）
{
@Override
public void onClick（View v）{
/ *
*在后台线程中发送电子邮件
* /
线程t =新线程（new Runnable（） {
@Override
public void run（）{
//从首选项检索配置值
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences（theActivity）;
String destinationAddress = preferences.getString（email_destination_address，theActivity.getString（R.string.default_email_destination_address））;
String senderAddress = preferences.getString（email_from，theActivity.getString（R.string.default_email_sender_address）） ;
String senderPassword = preferences.getStrin g（email_password，theActivity.getString（R.string.default_email_sender_password））;
String smtpServer = preferences.getString（email_server，theActivity.getString（R.string.default_smtp_server））;
邮件m = new Mail（senderAddress，senderPassword）;
String [] toArr = {destinationAddress};
m.setHost（smtpServer）;
m.setTo（toArr）;
m.setFrom（EMAIL_USERNAME）;
m.setSubject（getString（R.string.email_subject，barcode））;
m.setBody（getString（R.string.email_body））;
try {
ArrayList< String> filesToSend = theAdapter.getFilenames（）;
（String file：filesToSend）
{
m.addAttachment（file）;
}
if（m.send（））{
Log.d（TAG，EMAIL SENT SUCCESSFULLY）;
} else {
Log.w（TAG，EMAIL NOT SENT）;
}
} catch（异常e）{
Log.e（TAG，无法发送电子邮件，e）;
}
}
}）;
t.start（）;
Toast.makeText（getApplicationContext（），getString（R.string.email_sending），Toast.LENGTH_LONG）.show（）;
theActivity.onBackPressed（）;
}
}）;
注意：如果我今天写这个代码，我可能会使用一个 AsyncTask 而不是线程，但是被认为是有效的。
I added the three jar files to java build path,added Internet uses permission all setted good to go.! I putted a button in my main page, whenever i click on this button an intent to this java mail class to work, and the email have to send to the corresponding users. But when i click on the button It suddenly shows up that Appplication stopped working..!! One thing is that i didnt used any layout for this java mail class. that you will understand when you see the below code. it cause i want to send the message automatically.!! what to do.?? help me guys.?? Thank You.!!
package;
import java.util.Date;
import android.content.Intent;
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 to1,to2,to3,to4,to5; // here i putted my recepients name
private String[] _to = {to1,to2,to3,to4,to5};
private String _from;
private String _port;
private String _sport;
private String _host;
private String _subject = "HELLO";
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
_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) {
this();
_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);
// Put parts in message
msg.setContent(_multipart);
// send email
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");
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 …..
}
解决方案
You should post the code that calls this class (likely your Activity). There are some common problems that could cause this, like the NetworkOnMainThreadException.
I wrote some working Android mail code based on the same javax.mail code, and it works correctly. Here's the code:
submitButton.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
/*
* Send email in a background thread
*/
Thread t = new Thread(new Runnable() {
@Override
public void run() {
// retrieve the configuration values from preferences
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(theActivity);
String destinationAddress = preferences.getString("email_destination_address", theActivity.getString(R.string.default_email_destination_address));
String senderAddress = preferences.getString("email_from", theActivity.getString(R.string.default_email_sender_address));
String senderPassword = preferences.getString("email_password", theActivity.getString(R.string.default_email_sender_password));
String smtpServer = preferences.getString("email_server", theActivity.getString(R.string.default_smtp_server));
Mail m = new Mail(senderAddress, senderPassword);
String[] toArr = { destinationAddress };
m.setHost(smtpServer);
m.setTo(toArr);
m.setFrom(EMAIL_USERNAME);
m.setSubject(getString(R.string.email_subject, barcode));
m.setBody(getString(R.string.email_body));
try {
ArrayList<String> filesToSend = theAdapter.getFilenames();
for (String file : filesToSend)
{
m.addAttachment(file);
}
if (m.send()) {
Log.d(TAG, "EMAIL SENT SUCCESSFULLY");
} else {
Log.w(TAG, "EMAIL NOT SENT");
}
} catch (Exception e) {
Log.e(TAG, "Could not send email", e);
}
}
});
t.start();
Toast.makeText(getApplicationContext(), getString(R.string.email_sending), Toast.LENGTH_LONG).show();
theActivity.onBackPressed();
}
});
Note: if I were writing this code today I might use an AsyncTask instead of a Thread, but either are considered valid.
这篇关于Java邮件API在Android中无法工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
