java无法在安卓应用程序中使用javax发送电子邮件
我正在使用以下代码发送电子邮件:
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");
Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("sender@gmail.com","123456");
}
});
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress("sender@gmail.com"));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse("reciever@gmail.com"));
message.setSubject("Testing Subject");
message.setText("Dear Mail Crawler," +
"\n\n No spam to my email, please!");
Transport.send(message);
System.out.println("Done");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
我的安卓项目已经需要.jar
。没有例外,但我没有收到任何电子邮件
安卓的Logcat
04-16 23:40:08.972 18170-18170/com.coderwall.executer W/System.err﹕ 安卓.os.NetworkOnMainThreadException
04-16 23:40:08.972 18170-18170/com.coderwall.executer W/System.err﹕ at 安卓.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1126)
04-16 23:40:08.972 18170-18170/com.coderwall.executer W/System.err﹕ at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
04-16 23:40:08.972 18170-18170/com.coderwall.executer W/System.err﹕ at java.net.InetAddress.getLocalHost(InetAddress.java:365)
04-16 23:40:08.972 18170-18170/com.coderwall.executer W/System.err﹕ at javax.mail.internet.InternetAddress.getLocalHostName(InternetAddress.java:563)
04-16 23:40:08.972 18170-18170/com.coderwall.executer W/System.err﹕ at javax.mail.internet.InternetAddress._getLocalAddress(InternetAddress.java:542)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at javax.mail.internet.InternetAddress.getLocalAddress(InternetAddress.java:513)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at javax.mail.internet.UniqueValue.getUniqueMessageIDValue(UniqueValue.java:99)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at javax.mail.internet.MimeMessage.updateMessageID(MimeMessage.java:2152)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2181)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2141)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at javax.mail.Transport.send(Transport.java:123)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at com.coderwall.executer.MainActivity.getComputation(MainActivity.java:275)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at com.coderwall.executer.MainActivity$1$1$2.run(MainActivity.java:90)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at com.coderwall.executer.MainActivity$1$1.onPostExecute(MainActivity.java:109)
04-16 23:40:08.982 18170-18170/com.coderwall.executer W/System.err﹕ at c com.coderwall.executer.MainActivity$1$1.onPostExecute(MainActivity.java:61)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at 安卓.os.AsyncTask.finish(AsyncTask.java:631)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at 安卓.os.AsyncTask.access$600(AsyncTask.java:177)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at 安卓.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at 安卓.os.Handler.dispatchMessage(Handler.java:99)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at 安卓.os.Looper.loop(Looper.java:137)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at 安卓.app.ActivityThread.main(ActivityThread.java:4744)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at java.lang.reflect.Method.invokeNative(Native Method)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:511)
04-16 23:40:08.992 18170-18170/com.coderwall.executer W/System.err﹕ at com.安卓.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
04-16 23:40:09.002 18170-18170/com.coderwall.executer W/System.err﹕ at com.安卓.internal.os.ZygoteInit.main(ZygoteInit.java:553)
04-16 23:40:09.002 18170-18170/com.coderwall.executer W/System.err﹕ at dalvik.system.NativeStart.main(Native Method)
我错过了什么
我已经在我的AndroidManifest.xml
中添加了以下行:
<intent-filter>
<action 安卓:name="安卓.intent.action.MAIN" />
<uses-permission 安卓:name="安卓.permission.INTERNET"/>
<category 安卓:name="安卓.intent.category.LAUNCHER" />
</intent-filter>
# 1 楼答案
无法在主线程中发出网络请求。在单独的线程内执行此操作:
或者使用AsyncTask:http://developer.android.com/reference/android/os/AsyncTask.html